JBR Series – High Power & Precision Components for Modern Electronics

Video Showcase: JBR Series – High Power & Precision for Modern Electronics

In industrial design and automation systems, resistors and potentiometers play a decisive role in power regulation, load balancing, and precise signal adjustment. The jb JBR Series combines high power wirewound technology with precision trimming control, delivering reliability under demanding thermal and electrical environments. Whether you’re building motor drives, power inverters, or measurement instruments, JBR ensures stability, repeatability, and long-term endurance.

Bridging high-power dissipation with precision control — jb JBR Series for industrial applications.

This video highlights how the JBR Series integrates high load capacity and precision adjustability to achieve better thermal balance, current stability, and fine-tuned resistance — essential for engineers designing efficient and stable power systems.

Within the series, JBR-BT, JBR-BS, and JBR-BQ models handle high surge and continuous dissipation for load banks and inverter systems, while JBR-BH and JBR-BJ provide fine resistance trimming for test equipment and control boards. For interface applications, JBR-BM, JBR-BN, and JBR-BP feature smooth rotational torque and digital knob operation, ideal for control consoles and instrument panels.

Related Videos

Video Title	Focus Area
JBR High Power Wirewound Overview	Thermal management, surge endurance, inverter test systems
Precision Potentiometers & Digital Knobs	Signal calibration, analog control, panel adjustment

High-reliability trimming potentiometers and wirewound resistors from JBR Series – built for engineering precision.

Explore Full JBR Series → Contact jb Capacitors

Learn more about jb’s JBR Series components designed for precision control, load management, and industrial stability.

jb® SMD Capacitors – Compact Design, Reliable Performance

jb® Home › SMD Aluminum Electrolytic Capacitors

SMD Aluminum Electrolytic | Low ESR | SMPS | DC/DC

Switch-mode power supplies and compact electronics require low ESR, optimized impedance, and long endurance in limited PCB space. jb® SMD Aluminum Electrolytic Capacitors are engineered for DC/DC converters, SMPS rails, LED drivers, and telecom equipment, delivering stable ripple suppression and robust power integrity with competitive total cost of ownership.

At a glance. Compared with standard radial capacitors, SMD types enable automated SMT assembly, support high-density layouts, and improve vibration tolerance and mechanical stability. These advantages translate into cleaner transients, lower self-heating, and more reliable operation across consumer, industrial, and networking platforms.

Why SMD Aluminum Electrolytic Capacitors Improve Power Integrity

In switching power architectures, ripple current flowing through the capacitor’s ESR converts to heat and shortens lifetime. Selecting low-ESR SMD capacitors reduces AC loss and temperature rise, which improves efficiency and minimizes undershoot/overshoot during load transients. Designers typically start from an allowable ripple target and derive an ESR budget using ESRmax ≈ ΔVripple / Iripple, then validate across frequency and temperature on the bench.

High-reliability SMD electrolytics support low impedance across the SMPS switching band.

Series Overview and Typical Use Cases

Series	Temp	Load Life	Target Features	Main Applications
JCS	85°C	2000h	Standard ESR	Home electronics, cost-sensitive SMPS
JCK	105°C	1000–2000h	Low ESR	DC/DC, chargers, TV power boards
JCD	105°C	2000h	Low impedance	Telecom, PoE, networking gear
JCF	105°C	2000–5000h	Ultra-low impedance	LED drivers, industrial SMPS

Production Line Preview

See how jb® ensures consistent manufacturing quality and process control for SMD electrolytics.

Cross-Reference and Sourcing Continuity

jb® maintains a broad SMD lineup that maps to leading brands, enabling drop-in or spec-matched replacements to reduce supply chain risk. Request our cross-reference to accelerate qualification and secure stable production.

Browse SMD Series Request a Quote Ask for Cross-Reference

Always validate product selection with the official datasheet during design qualification. For high-temperature ambient above 60 °C, consider voltage derating.

Low Leakage & Long Life Super Capacitors for Energy Retention

jb® Super Capacitors are designed to deliver both ultra-low leakage current and long cycle life for applications in smart meters, IoT sensor nodes, memory backup systems, and industrial controls. They combine low ESR, stable voltage, and robust aging performance to ensure energy retention over extended periods.

Fundamentals of Low Leakage & Self-Discharge

Supercapacitors inherently exhibit self-discharge (leakage) due to ion migration, charge redistribution, and faradaic side reactions. Industry white papers report that leakage current typically decays with time (hours–days) and is temperature-dependent [1]. Modeling leakage with a parallel resistance in the RC network yields more realistic behavior predictions [2].

Recent studies analyze suppression mechanisms—Ohmic, Faradaic, and redistribution—and propose mitigation strategies [3]. Analytical, leakage-aware formulas further improve prediction of voltage–time curves under load [2].

Materials, Electrolytes & ESR Tradeoffs

Electrode, electrolyte, and separator choices impact both ESR and leakage. Reviews highlight that high ionic conductivity reduces ESR but impurities or side reactions can raise leakage [4]. Novel electrolyte systems and purification techniques aim to balance conductivity, stability, and leakage suppression [5].

Aging mechanisms matter: over time, capacitance may decrease while ESR rises. Elevated voltage or temperature accelerates degradation—binder breakdown, contact resistance growth, and electrolyte decomposition [6]. Long-life studies survey failure modes and durability pathways in supercapacitors [7].

Modeling & Lifetime Prediction

For design confidence, lifetime estimation is essential. Data-driven and physics-based models are used to forecast remaining useful life (RUL) [8]. Incorporating a leakage branch (parallel resistance) improves accuracy under partial states of charge and non-ideal conditions [2].

In practice, some standards and handbooks consider end-of-life when capacitance falls to ~70–80% of rated value or ESR doubles [9]. Robust designs aim to minimize leakage, maintain structural stability, and control internal heating across duty cycles.

Applications & Real-World Use Cases

• Smart Meters / Grid — months-long retention without voltage drop.
• IoT / Sensor Nodes — minimal self-discharge extends duty cycles and harvest intervals.
• Memory & RTC Backup — preserve data during outages and cold starts.
• Industrial / Automation — bridge transient loads and absorb regenerative pulses.

Hybrid battery–supercapacitor systems let the SC supply high-power spikes, reducing battery stress and extending battery life—common in EV and power electronics literature [10].

Demo Video

Transient load performance and ESR behavior during pulse discharge.

Open on YouTube

Hero Image

Overview: low leakage & long life supercapacitor architecture.

Series Gallery

Datasheets & Support for Design Engineers

Consult datasheets for ESR vs frequency, leakage current curves, lifetime modeling, and thermal behavior. Validate with system-level simulation to ensure leakage over months remains within thresholds. Our team can help you choose among coin, combined, and module types by voltage, temperature, and retention needs.

Explore Product Line Contact Engineering

References

1. Vishay. How to Manage Leakage Current and Self-Discharge of EDLC Capacitors. 2025. PDF — supercapacitor self-discharge & leakage current control (Vishay)
2. Ali, Z. M.; Calasan, M.; Aleem, S. H. E. A.; Hasanien, H. M. (2023). On the Exact Analytical Formulas of Leakage-Current-Based Supercapacitor Model Operating in Industrial Applications. Energies 16(4):1903 (MDPI). leakage-aware supercapacitor modeling (MDPI)
3. Shang, W. et al. (2023). Insight into the Self-Discharge Suppression of Supercapacitors. review — mechanisms & suppression strategies (ScienceDirect)
4. Dissanayake, K. et al. (2024). A Review of Supercapacitors: Materials, Technology, Challenges, and Applications. materials, ESR & leakage trade-offs (ScienceDirect)
5. Mendhe, A. et al. (2023). A Review on Electrolytes for Supercapacitor Device. Springer. electrolytes & purification for low ESR / low leakage (Springer)
6. Chen, X. et al. (2023). Aging and Degradation of Supercapacitors: Causes, Mechanisms and Prevention. open-access review — ageing under high V/T (PMC)
7. Pameté, W. et al. (2023). The Many Deaths of Supercapacitors: Degradation, Aging, and Performance Fading. Advanced Energy Materials. PDF mirror — failure modes & durability (AEM)
8. Yi, Z. et al. (2022). Prediction of the Remaining Useful Life of Supercapacitors: A Review. Hindawi. RUL models — data-driven & physics-based (open PDF)
9. Wikipedia contributors. (updated). Supercapacitor — overview & typical EOL criteria (capacitance drop / ESR rise). supercapacitor fundamentals & end-of-life (Wikipedia)
10. Vishay. Power Management Solution: Constant Voltage (CV) Pulse Charging of Hybrid Capacitors. Application Note, 2018. hybrid battery–supercapacitor systems & lifetime (Vishay)

JBR-BA ~ JBR-BG Wirewound Potentiometer Explained – From Single to Multi-Turn Precision

Ever turned a potentiometer and wondered why some keep spinning while others stop after one twist?
That’s exactly the difference between single-turn and multi-turn wirewound types. The jb® JBR-BA ~ JBR-BG Series provides precise, stable adjustment across all applications—from quick manual tuning to fine industrial calibration.

Why Choose Wirewound Potentiometers?

Wirewound potentiometers use a coiled resistance wire instead of a carbon film. This construction ensures high accuracy, excellent heat stability, and minimal drift—ideal for measurement systems, audio tuning, and control panels that demand reliability.

Meet the JBR Series Family

The JBR-BA ~ JBR-BG family includes models from compact single-turn to precision 10-turn types. Below is a quick comparison for easier model selection:

Series	Turns	Power	Resistance Range	Recommended Application
JBR-BC	1 Turn (Trimming)	1 W	50 Ω – 2 MΩ	PCB trimming, fine tuning
JBR-BD	1 Turn	1 W	50 Ω – 10 kΩ	Quick panel adjustment
JBR-BE	5 Turns	1 W	100 Ω – 47 kΩ	Compact control modules
JBR-BA / BB / BF / BG	10 Turns	2 W	100 Ω – 100 kΩ	Industrial calibration & automation

Video Demonstration

Explore JBR Series Request Free Samples

Frequently Asked Questions

Wirewound types are more stable, accurate, and durable under temperature and mechanical stress, ensuring consistent performance over years.

Yes, as long as your circuit accommodates more turns. The JBR-BG offers finer control for sensitive calibration points.

Yes. The JBR family offers multiple mounting and shaft options suitable for both front and rear panel installations.

You can contact us here — our team will respond within 24 hours.

Why Audio Engineers Choose JPX/JSX/JFX Capacitors

Watch the JPX / JSX / JFX series introduction and learn why engineers choose these capacitors.

Reliable Alternatives Without Overspending

Engineers and DIY audio builders often face the same problem: high costs and strict order quantities when sourcing capacitors from well-known brands like Mundorf, Jantzen, or Auricap. The jb® JPX, JSX, and JFX series of axial polypropylene film capacitors solve this challenge by offering professional-grade audio performance with lower minimum order quantities and more accessible pricing.

Official jb® product photo of JPX, JSX, JFX axial polypropylene film capacitors.

Technical Highlights

JPX Supreme stands out with detailed midrange, fast transient response, and stable low frequencies. JSX Superior offers a compact form factor with clean highs and strong mids, making it a favorite among DIY users. JFX Premium is designed as a cost-effective workhorse, combining reliability with low ESR and DF.

Practical DIY Applications

In real projects, one hobbyist reported a noticeable improvement after replacing crossover capacitors with JSX Superior 630V, describing a wider soundstage and clearer vocals. Another builder tested JPX Supreme in the signal path of a DIY headphone amplifier, noting enhanced bass control and a warmer midrange. These cases show how small-batch orders make it possible to experiment and refine designs without financial risk.

Ready to Experience Better Sound?

Test JPX / JSX / JFX in your next DIY or professional audio project. Order a free sample or start with a small batch today.

Free Sample Order Now

All information is based on jb® datasheets and field feedback.

How to Get Capacitor Quotes Online – jb Enhanced Quote List

Learn how to get capacitor quotes online in just 3 steps. Discover how jb Capacitors’ enhanced system helps engineers and global buyers get fast capacitor quotes from a trusted capacitor supplier.

FAQ: Getting Capacitor Quotes Online

Why use an online capacitor quote system?

Instead of sending multiple emails and waiting for replies, an online capacitor quote tool gives you faster, clearer results. With jb’s platform you can search, add to a Quote List, and submit in minutes.

Is this for engineers or procurement teams?

Both. Engineers can use precise filters to find the right part for BOM design, while procurement teams can consolidate multiple capacitor inquiries and track them in one place. It saves time and improves accuracy.

Does it support global sourcing?

Yes. jb is a global capacitor supplier, making the online quote system efficient for overseas buyers, distributors, and design engineers.

3 Easy Steps

1) Search Products Use filters like capacitance, voltage, ESR, or package in the capacitor search bar.

2) Add to Quote List Combine multiple items or alternatives in one radial capacitor inquiry form.

3) Get Fast Quotes Receive accurate capacitor quotes tailored to your BOM and sourcing needs.

Visit jb Website to Start Your Quote › Explore jb Capacitors ›

JNE, JNJ, JNK Snap-in Capacitors Datasheet & Applications

Accessing the right snap-in capacitor datasheet at the right time is critical for engineers. Delays in documentation often cause design interruptions and push back project timelines. To address this, jb® provides centralized resources for jb JNE capacitor, jb JNJ capacitor, and jb JNK capacitor – all with direct downloads and practical application examples.

▶ Watch Factory Process

Factory Video: See how reliability is built into every snap-in capacitor.

Centralized Datasheets for Engineers

Engineers no longer need to search across multiple sources for snap-in capacitor datasheets. All three jb® series are available in one place:

• jb JNE capacitor – cost-effective, compact design, high ripple performance.
• jb JNJ capacitor – extended lifetime, stable ESR, ideal for industrial power supply designs.
• jb JNK capacitor – premium, long-life solution with excellent capacitor reliability.

Applications & Alternatives

The jb JNE, JNJ, and JNK series deliver reliable performance for SMPS, automation systems, EV chargers, and frequency converters. For engineers looking for second-source options, jb JNE is often compared as a Nichicon GL replacement or Yageo LG alternative, while jb JNK is used where high ripple capacitors and long service life are mandatory.

Why This Matters

Missing or outdated datasheets can cause costly delays in the design cycle. By providing immediate access to updated snap-in capacitor datasheets alongside real-world applications, jb® helps engineers streamline development, improve capacitor reliability, and reduce sourcing risks.

Download Datasheets & Contact

Download the latest datasheets and explore application examples for JNE, JNJ, and JNK series directly:

See Full Specs › Contact Us ›

Application Overview & Series Comparison

Trimming Potentiometers vs. Leading Brands (PIHER / VISHAY / BOURNS)

Engineers comparing trimming potentiometers vs PIHER / VISHAY / BOURNS often need a clear, specification-first method to validate alternatives. This article focuses on what can be verified from datasheets—resistance range and tolerance, electrical travel, rated power and maximum operating voltage, mechanical life, and temperature performance—so you can make confident, documentation-backed decisions.

How to Compare — A Practical, Datasheet-First Method

Start by mapping your target model’s resistance value and tolerance to an equivalent option. Verify electrical travel and rotation angle to ensure comparable adjustment granularity; then confirm rated power and maximum operating voltage to maintain safety margins. Review mechanical life for expected cycling durability and check operating temperature range for reliability under your environmental conditions. Finally, match mounting/packaging (SMD vs. THT) and key mechanical dimensions for PCB layout fit.

Application Highlights

• Wirewound Resistors — widely used in EV braking systems, energy storage modules, and industrial testing equipment due to their high power handling and reliability.
• Digital Knobs — ideal for medical devices and precision instruments, providing clear mechanical display and accurate multi-turn adjustment.
• Conductive Plastic Potentiometers — preferred in aerospace, medical electronics, and high-end industrial control where long life and high resolution are essential.
• Carbon Film Potentiometers — cost-effective choice for audio equipment and household appliances, supporting the mass-market segment with stable performance.

In-House Manufacturing & Quality Control

This video is not just a showcase — it demonstrates jb’s in-house manufacturing capability and strict quality control. By showing real production and adjustment processes, we give engineers confidence that every trimming potentiometer is built with consistent standards, from material handling to final testing.

This factory video highlights trimming potentiometer manufacturing and quality control testing. It shows how jb ensures stable performance, reliable adjustment, and consistent standards from production to final inspection.

From Evaluation to Action

If your spec-by-spec comparison aligns, proceed to sample testing and request a formal quotation. This ensures the final decision is grounded in both documentation and bench validation.

Explore Trimming Potentiometer Series › Request Samples / Get Price Quote ›

Conclusion

A datasheet-first approach keeps the comparison objective. Match resistance/tolerance, electrical travel and angle, power and voltage limits, mechanical life, temperature range, and packaging/fit. Validate on the bench, then move forward with samples and quotation.

JFQP – Reliable DC Link MKP Film Capacitors with Short Lead Time

In time-sensitive production environments, extended lead times for essential components can create significant challenges. For engineers and procurement teams, partnering with a dc link MKP capacitor supplier that can deliver within short cycles is often critical to keeping projects on track and reducing operational risk.

The JFQP series from jb Capacitors is designed with both performance and availability in mind. These capacitors provide dependable solar inverter capacitor solutions for renewable energy systems, as well as robust industrial DC link capacitor options for demanding motor drives and precision power supplies — all while being ready to ship within shorter timeframes.

The video above outlines the core features and practical use cases, showing how this high voltage MKP capacitor range can integrate into various power electronics designs. From improving DC bus stability in inverters to reducing ripple in industrial drives, the JFQP series meets technical requirements while maintaining availability.

👉 Explore JFQP Specifications
📩 Contact Our Team

jb JFG Series: Cycloidal & Flat Oval Designs for High Voltage Demands

In high voltage designs, structure matters. The way a film capacitor is built — whether in a cycloidal body or a flat oval form — directly affects not only how it fits your board layout, but also how it handles thermal expansion, electrical stress, and long-term reliability.

The jb JFG Series offers both options: JFGA / JFGC (Cycloidal) and JFGB / JFGD (Flat Oval). These designs are paired with polyester (PET) or polypropylene (PP) dielectric films, and come in ratings up to 1250VDC — making them ideal for energy-dense, mission-critical circuits.

So, which structure is right for your project?

If your layout needs a component with more height tolerance and compact footprint, the cycloidal version may be your best fit. On the other hand, if you’re working with space-limited vertical profiles or dense modules, the flat oval design will provide easier stacking and tighter spacing.

Both options offer excellent self-healing properties, low dissipation factor, and consistent dielectric performance across temperature and frequency ranges.

Compare Full Specs, Models & Drawings Online

Instead of guessing which model suits your voltage level or layout restrictions, we’ve made it easy for you to compare all JFG series models — including detailed dimensions, capacitance range, and lead types.

🔍 Compare all JFG models → Contact us for details

📐 Need to check fit and footprint? Full mechanical drawings and datasheets are available — request via our Contact Page.

📧 Questions? Contact our team here.

JKA Series: Rare SMD Ceramic Trimmer Capacitors with Immediate Availability

In high-frequency design, precision and reliability are non-negotiable. From RF filters to impedance matching circuits, a capacitor that drifts under thermal stress or vibration isn’t just inconvenient — it’s a design flaw waiting to happen.

That’s why engineers increasingly choose the JKA Series SMD Ceramic Trimmer Capacitors from jb Capacitors. These aren’t your average variable capacitors. They’re crafted for high stability, high Q performance, and robust SMT compatibility, making them ideal for demanding designs across RF, telecom, IoT, and wearable applications.

What Makes the JKA Series Different?

Unlike traditional through-hole trimmers, the JKA Series features a miniature 3mm surface mount form factor — just 3.2 × 4.5 × 1.5 mm — that supports layout optimization in space-constrained PCBs.

Each model offers a tightly defined capacitance range from 1.5 pF to 28.5 pF, and supports multiple temperature coefficients: NPO, N750, and N1300. This gives engineers the flexibility to fine-tune circuits without compromising reliability.

Reliable in the Field, Not Just on the Bench

The JKA Series is built for real-world durability. Its sealed housing prevents flux and dust contamination, while its high-temperature liquid crystal polymer body ensures minimal dielectric loss and solid mechanical strength.

The adjustable torque (15–72 gf.cm) allows precise calibration that stays fixed. Whether in portable radios, wireless modules, or automotive subsystems, JKA capacitors hold their performance across challenging environments.

When to Choose the JKA Series

If your application requires stable tuning across temperature and time, especially in the 1 MHz to 100 MHz range, the JKA Series is the go-to solution.

Consider it for designs like:

• Narrow-band RF amplifiers with fine impedance control
• IoT sensors requiring compact layouts and clean signals
• Filters needing stable response over thermal cycling

This is where high Q, low ESR, and minimal drift truly matter — and where jb’s JKA Series stands out.

Ready to Integrate?

Engineers worldwide rely on the JKA Series for high-precision analog and RF projects. Backed by a detailed datasheet and in-stock availability, it’s easy to spec into your next design.

Download datasheet and check availability → Click here

📧 Questions? Contact us here.

JBR Series: High-Precision Trimming Potentiometers

Trimming potentiometers play a critical role in analog circuit design—especially where fine voltage or resistance tuning is essential. Whether you’re calibrating a sensor, adjusting gain in an amplifier, or managing offsets in a comparator circuit, a high-precision variable resistor ensures your system stays stable and predictable.

The JBR Series offers a refined solution for those looking to integrate wirewound trimming potentiometers into tight PCB spaces. Designed for durability, smooth rotation, and low temperature drift, these components are ideal for both prototyping and long-term deployment.

Why Trimming Potentiometers Still Matter

Despite the rise of digital tuning systems, analog adjustment remains indispensable in many applications. A trimming potentiometer—also called a preset resistor or PCB tuning component—offers unmatched immediacy and cost-effectiveness when:

• Fine-tuning analog voltage dividers or bias networks
• Calibrating sensor thresholds or analog filters
• Making post-production adjustments in manufacturing lines
• Providing re-tuning capabilities without firmware changes

The JBR Series features single-turn and multi-turn potentiometer options with mechanical angles up to 3600°, tight linearity tolerance, and high resistance range—from 50 Ω up to 2 MΩ, depending on the variant.

Technical Highlights That Make the Difference

Engineered with wirewound construction, these potentiometers deliver consistent resistance behavior under thermal and mechanical stress. Designers will appreciate:

• Stable linearity for repeatable adjustment results (±0.25%–±0.5%)
• High insulation resistance (up to 1GΩ) and voltage handling
• Low rotational noise and consistent contact resistance
• Long life cycles—tested up to 10,000 adjustments

For engineers designing industrial control systems, sensor modules, or analog calibration interfaces, the JBR Series provides confidence in both initial setup and field reliability.

Applications You’ll Recognize

You’ll find these trimming potentiometers in everything from power supply feedback loops to automotive sensor calibration circuits. They’re especially well-suited for environments where analog signal integrity, EMI sensitivity, or thermal variation must be tightly controlled.

Still unsure if a mechanical tuning component is right for your project? Watch the video above to explore real-world implementations and mechanical behaviors of the JBR Series.

For detailed specifications and CAD drawings, visit: jbcapacitors.com

Contact Us

Email: info@jbcapacitors.com
Website: www.jbcapacitors.com

jb JFQF Series: Reliable Polypropylene Film Capacitors

When it comes to reliable AC filtering, not all capacitors are created equal. The jb® JFQF series stands out with its high stability, low ESR, and strong EMI suppression capability—making it an excellent choice for engineers working on UPS systems, solar inverters, and other AC power applications.

This series uses metallized polypropylene film, a material known for durability and self-healing behavior, and offers wide voltage options, including 250VAC, 275VAC, and up to 480VAC.

Whether you're designing a compact power converter or upgrading your AC output filter, JFQF capacitors can deliver the long-term performance and thermal reliability your design demands.

Designed with Practical Use in Mind

Feature	Benefit
Self-healing polypropylene film	Improved lifespan under voltage stress
Low ESR and high ripple capability	Reliable performance in high-frequency switching
Compact, epoxy-filled casing	Space-saving design with thermal protection

Download datasheet and review specs →
View JFQF Product Page

Contact Us

Email: info@jbcapacitors.com
Website: www.jbcapacitors.com

How to Solve EMI Noise in AC Circuits with a Compact X1 Capacitor?

EMI noise is a common issue in AC-powered electronic devices. Whether you're designing a switching power supply, a motor driver, or a smart plug, electromagnetic interference can cause instability, reduce performance, or even lead to failure in sensitive circuits.

So, how can engineers effectively suppress EMI in AC circuits without compromising on space or safety?

Use a Certified X1 Film Capacitor – Like jb’s JFT Series

X1 capacitors are safety-certified components designed for EMI suppression between the AC line and neutral. They are tested to withstand impulse voltages up to 4kV, making them ideal for industrial and commercial applications where reliability matters.

The jb JFT series is a compact, high-performance solution designed to meet these exact needs. Built with metallized polypropylene film, the JFT capacitor offers self-healing properties, low dissipation factor, and compliance with IEC 60384-14 (Class X1).

Key Benefits of Using the JFT X1 Capacitor

✔ Compact size — starting at just 13 × 11 × 5 mm, ideal for space-constrained designs
✔ Rated for 300VAC and 440VAC
✔ Capacitance range from 0.0022μF to 4.7μF
✔ Operating temperature from -55°C to +105°C
✔ Insulation resistance ≥ 15,000 MΩ (for C ≤ 0.33μF)
✔ Self-healing construction for long-term reliability

Where to Use It?

The JFT series is commonly used in:

• AC EMI input filters
• Switched-mode power supplies (SMPS)
• LED drivers and ballasts
• HVAC controllers
• Industrial automation equipment
• Chargers, adapters, and smart home devices

Why Not Just Use a Ceramic Capacitor?

While ceramic capacitors are compact, they usually lack safety certification and cannot withstand high surge voltages. The JFT X1 capacitor, in contrast, offers:

Feature	JFT X1 Capacitor	Ceramic Capacitor
EMI Suppression	Excellent	Moderate
Surge Handling	Up to 4kV	Limited
Safety Certification	Yes (Class X1)	No
Fail-Safe Design	Self-healing	Risk of short circuit
Long-Term Reliability	High	Medium

Learn More

Want to see this capacitor in action? Check out our video demonstration above or download the official datasheet below:

• View Product Page
• Download Datasheet (PDF)

Final Thoughts

If you're looking for a space-saving, safety-certified solution to suppress EMI in your AC applications, the jb JFT X1 film capacitor is an excellent choice. Its proven performance and compact size make it ideal for both new designs and replacements in existing systems.

Contact Us

Email: info@jbcapacitors.com
Website: www.jbcapacitors.com

Explore CBB60, CBB61 & MPP Capacitors for AC Applications

When designing AC-powered systems, selecting the right capacitor ensures efficiency, durability, and consistent performance. In this article, we’ll explore the differences between jb’s CBB60, CBB61, and MPP capacitors—and how each fits specific AC applications.

CBB60, CBB61, and MPP: What's the Difference?

All three types are designed for AC operation, but with distinct strengths. Here's a quick comparison:

Model	Application	Case Type	Capacitance	Voltage
CBB60	Motor run (pumps, washing machines)	Round plastic	1–100μF	250/450VAC
CBB61	Fan motors, compact appliances	Square plastic	1–20μF	250/450VAC
MPP	AC filtering, PFC circuits	Film (metallized polypropylene)	Customizable	250–630VAC

Why Use jb’s MPP Capacitors in AC Circuits?

jb’s MPP capacitors are built for low loss, high insulation resistance, and long life in high-frequency AC circuits. These are commonly used in:

• Ballasts and lighting systems
• Power factor correction (PFC)
• Industrial filtering units

With excellent self-healing properties and stable electrical behavior, they’re a trusted choice for demanding applications.

Designers Trust jb for AC Capacitor Solutions

• 100% electrical testing on all units
• Stable dielectric performance under thermal stress
• Flexible mounting and wiring options
• Globally recognized manufacturing quality

Download Technical Datasheets

Click below to access detailed product specifications and mechanical drawings:

• CBB60 Datasheet
• CBB61 Datasheet
• MPP Product Page

Need Help Selecting the Right Capacitor?

We’re here to help. jb offers expert advice, global support, and a full product lineup for every AC capacitor need. Discover our solutions now:

jb AC Capacitors Overview

Contact Us

Email: info@jbcapacitors.com
Website: www.jbcapacitors.com

Inside jb Capacitors: A Visual Tour of Our Headquarters – Celebrating 45 Years of Excellence

Curious about where your capacitors come from? This visual walkthrough gives you an inside look at the jb Capacitors headquarters — where precision engineering meets seamless teamwork. 2025 marks our 45th anniversary — over four decades of innovation, reliability, and service in the passive components industry. For years, jb has supported thousands of global B2B partners with trusted aluminum electrolytic capacitors, film capacitors, and trimming potentiometers.

A Workplace Built for Excellence

Behind every stable capacitor is a disciplined process and a dedicated team. From organized product shelves to quiet workspaces, our office is designed to keep operations efficient and quality consistent. With 45 years of proven expertise, we believe people and processes together create the foundation for lasting reliability.

• Clean, professional office environment
• Strong cross-department coordination
• Clear communication and accountability

Our workspace reflects our core values: consistency, transparency, and customer focus — the three pillars that shape jb’s global reputation.

Why This Tour Matters

Selecting a capacitor partner goes beyond datasheets. This video provides procurement managers and design engineers the confidence to know who we are, how we work, and why we’re trusted worldwide. Celebrate 45 years of excellence with jb Capacitors and see how our culture drives quality and innovation.

▶️ Watch now and discover why companies across Europe, North America, and Asia continue to rely on jb Capacitors as their preferred partner.

Learn More

Explore our full product lines or request free samples here:
www.jbcapacitors.com

📧 Email: info@jbcapacitors.com

Compact and Stable: JBR Series Trimmers for Circuit Tuning

Modern electronics demand components that are both compact and reliable. As PCBs get smaller and applications more complex, trimming potentiometers have become essential for ensuring accurate and stable circuit tuning.

The JBR Series from jb Capacitors is designed to meet this challenge, combining miniature size with stable electrical performance.

1. Compact Designs for Space-Constrained Applications

For handheld devices, communication modules, or IoT hardware, board space is always limited. The JBR-065 model solves this by offering a miniature footprint with top-adjust design — making precise tuning possible even in tight layouts.

Common applications:

• Wireless transmitters and receivers
• Medical devices with limited enclosure space
• Compact consumer electronics requiring fine tuning

2. Stable Electrical Performance Over Time

Size alone is not enough — stability matters. The JBR-3309, a sealed general-purpose trimmer, maintains consistent resistance values even after repeated adjustments. Its sealed design resists moisture and dust, making it ideal for high-humidity or field applications.

Key features across the series:

• Tight resistance tolerance
• Low rotational torque for smooth adjustment
• Excellent aging characteristics

3. Built for Real-World Engineering Needs

The JBR series is developed with practical engineering requirements in mind:

• Resistance range from 10Ω to 2MΩ
• Through-hole mounting for robust mechanical reliability
• Top or side adjustment options for flexible layouts
• Up to 200 mechanical adjustment cycles

These trimmers are widely used for offset voltage tuning, gain control, and other fine adjustments in analog and mixed-signal circuits.

Need the Specs?

Compare the full JBR lineup and download detailed datasheets here:

• JBR-065 Datasheet (PDF)
• JBR-3309 Datasheet (PDF)
• JBR-3540 Datasheet (PDF)

Conclusion

From compact footprints to long-term stability, the JBR Series trimming potentiometers provide an ideal solution for today’s demanding electronics. Their performance and flexibility make them the right choice for both design engineers and production teams.

Want to learn more? Explore the full JBR Series here →
👉 jbcapacitors.com/product-category/trimming-potentiometers/