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 (metalized 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 offers a unique perspective on the jb Capacitors headquarters — where precision engineering meets efficient teamwork. In 2025, we’re proud to celebrate our 45th anniversary, marking over four decades of innovation and reliability in the passive components industry. jb Capacitors has supported thousands of global B2B clients with high-quality aluminum electrolytic capacitors, film capacitors, and trimming potentiometers.

A Place Where Process Meets People

Take a closer look at how our daily office operations contribute to product stability and service excellence. From organized product shelves to quiet work zones, every part of our workplace is designed to support long-term relationships with engineers and procurement teams worldwide. Powered by 45 years of proven expertise, our culture is the foundation of consistent quality.

• Clean, professional office layout
• Hands-on coordination across departments
• Strong communication culture and team accountability

Our space reflects our values: consistency, transparency, and customer focus — three pillars that define our reputation as a capacitor supplier.

Why This Tour Matters

Choosing a capacitor partner isn't just about datasheets. This video helps procurement specialists and design engineers gain confidence in who we are and how we work — beyond the specs. Celebrate 45 years of excellence with us.

▶️ Watch now to see how we work — and why companies across Europe, North America, and Asia continue to trust jb Capacitors.

Visit Our Official Site

To explore our full product lines or request samples, visit:
www.jbcapacitors.com

Email: info@jbcapacitors.com

Compact and Stable: JBR Series Trimmers for Circuit Tuning

 

Modern electronics demand components that are both space-saving and dependable. As circuit boards become more compact and applications more demanding, the need for reliable trimming potentiometers is greater than ever.

The JBR Series from jb Capacitors addresses this challenge by offering trimmers that are both physically compact and electrically stable.

1. Compact Designs for Space-Constrained Applications

Whether you're working with handheld devices, communication modules, or IoT hardware, board space is always at a premium. The JBR-065 model, in particular, is designed with this challenge in mind. With a miniature footprint and top-adjust design, it fits easily into tight layouts while still delivering precise tuning performance.

Common applications include:

• Wireless transmitters and receivers

• Medical devices with limited enclosure space

• Consumer gadgets that require fine tuning

2. Stable Electrical Performance Over Time

Stability is just as important as size. The JBR-3309, a sealed trimmer with a solid general-purpose design, offers consistent resistance values even after repeated adjustments and long-term use. It resists moisture and dust, making it a dependable choice for high-humidity environments and field-deployed electronics.

Key features across the series:

• Tight resistance tolerance

• Low rotational torque for easier adjustment

• Excellent aging characteristics

3. Built for Real-World Engineering Needs

The JBR series is designed with actual engineering challenges in mind:

• Available in multiple resistance values (from 10Ω to 2MΩ)

• Through-hole mounting for mechanical reliability

• Top and side adjustment options depending on layout needs

• Up to 200 cycles of mechanical adjustment life

These trimmers help engineers fine-tune everything from offset voltages in analog circuits to gain controls in signal processing modules.

Need the Specs?

We’ve made it easy to compare the full JBR series and access datasheets for each model:

• JBR-065 Datasheet (PDF)

• JBR-3309 Datasheet (PDF)

• JBR-3540 Datasheet (PDF)

Conclusion

From compact size to long-term stability, the JBR series trimmer potentiometers offer an ideal solution for modern circuit tuning. Their performance and flexibility make them an excellent choice for both design engineers and production teams alike.

Want to explore more? Visit the full series here →
👉 jbcapacitors.com/product-category/trimming-potentiometers/

Compact and Stable: JSU Capacitors for Camera Flash Use

If you're working on compact photo equipment, the last thing you want is a bulky or unstable capacitor. That’s where the JSU Lug Aluminum Electrolytic Capacitor from jb Capacitors comes in — offering the perfect balance between small size and reliable flash output.

Designed for Space-Limited Applications

Whether you're developing digital cameras, portable flash modules, or DIY photography rigs, space-saving components are essential. The JSU capacitor features a slim lug design and compact body that easily fits tight layouts without sacrificing performance.

Why It’s a Great Fit for Camera Projects:

• Compact form factor for tight enclosures
• Stable voltage response under fast charge/discharge
• Consistent flash timing with minimal delay
• Easy to mount and connect via lug terminals

Perfect for Flash-Intensive Use

The JSU capacitor is not just small — it’s tough. It maintains stable output even after hundreds of flash cycles, making it ideal for use in photo flash triggers, backup lights, and studio accessories.

Ideal Use Cases

• Compact digital and film camera flash modules
• On-camera lighting attachments
• Battery-powered flash accessories
• Custom DIY photography projects

Need a Tiny Capacitor That Still Packs a Punch?

The JSU capacitor proves you don’t need to go big to get dependable results. With its small footprint and strong specs, it’s an easy pick for camera and handheld flash systems.

More Info

Email: info@jbcapacitors.com

Website: www.jbcapacitors.com

Product Page: JSU Series Overview

Datasheet: Download the PDF

Why 45 Years Matter: jb Capacitors' Legacy of Quality

What defines a truly trusted brand in the electronics industry? For jb Capacitors, the answer lies in 45 years of consistent quality, integrity, and global trust. Since 1980, we've committed not just to building capacitors — but to establishing a legacy that engineers can depend on.

A Legacy of Quality That Speaks for Itself

Our capacitors are more than components — they’re the product of refined processes, rigorous testing, and a company-wide culture of quality. At every stage, from raw materials to final inspection, our quality assurance protocols ensure reliability that lasts.

Global Manufacturer, Local Dedication

With manufacturing rooted in precision and export to over 100 countries, jb Capacitors stands as a global manufacturer with a local commitment to support and service. From industrial power solutions to custom OEM applications, our reach is wide — but our service always remains personal.

Why 45 Years Matter

Reaching 45 years is not about age — it's about impact. It reflects our ability to adapt to technology trends, respond to market needs, and continue delivering quality capacitors that meet the standards of today’s engineers.

Innovation Drives the Next Chapter

Looking forward, we remain focused on advancing capacitor performance and energy efficiency through innovation. Our R&D team continues to explore new materials and designs to meet tomorrow’s electronic demands.

Join Us in Celebrating 45 Years of Capacitor Excellence!

Discover why jb Capacitors is more than just a supplier — we are a legacy partner in quality. Celebrate with us, explore our product series, and experience the difference of a capacitor built with 45 years of expertise.

Get in Touch

Email: info@jbcapacitors.com

Website: www.jbcapacitors.com

How Engineers Choose SMD Electrolytic Capacitors – A Guide to Size, Stability, and Life Rating

  Choosing the right SMD aluminum electrolytic capacitor may seem straightforward at first glance—but experienced engineers know that it’s anything but simple.

Between ripple current demands, size constraints, expected product lifespan, and operating temperature range, capacitor selection has become a critical factor in ensuring long-term reliability for power circuits and embedded systems.

It Starts with the Right Questions

Before any footprint is locked or BOM finalized, smart design teams ask themselves:

• What ripple current will this circuit generate at full load?
• What’s the thermal profile of the surrounding components?
• Can this capacitor maintain performance after thousands of hours at 105°C?
• Does a smaller capacitor compromise reflow survivability or ESR stability?

These aren’t just spec sheet curiosities—they’re real selection criteria that impact reliability, cost, and even warranty planning.

Size Is a Factor—But Not the Only One

With PCB space at a premium, it's easy to assume the smallest capacitor is always the best choice. But here’s the reality:

Choosing the right spec is not the same as choosing the smallest part.

A compact form factor is helpful—but only when paired with proper ripple handling, lifespan durability, and thermal stability. Otherwise, the part may pass early testing but fail in long-term use, costing time and revenue downstream.

A Quick Breakdown of the Specs That Matter

Here’s what many engineers prioritize when evaluating aluminum SMD capacitors:

Spec Parameter	Why It Matters
Rated Ripple Current	Impacts power stability, especially in DC-DC or PWM circuits
Endurance @ 105°C	Indicates expected lifespan under high-temp continuous load
Operating Temperature	Wider range = better suitability for outdoor or harsh systems
ESR / Impedance	Affects heat generation and voltage regulation
Size / Height	Important for layout, but shouldn’t override functional needs

How jb Capacitors Simplifies Selection

At jb capacitors, we’ve developed the JCG, JCX, and JCY series of SMD aluminum electrolytic capacitors to address real-world engineering concerns—not just marketing specs:

• JCG – Up to 7000H @ 105°C, ideal for long-life requirements
• JCX / JCY – Rated for -55°C to +105°C, enabling broader deployment
• JCY – Supports high ripple current, optimized for switching regulators
• All models are SMT-ready and compatible with modern reflow processes

Explore the Full Spec, Not Just the Size

When selecting your next jb SMD aluminum electrolytic capacitor, go beyond just physical dimensions. Focus on actual performance under stress, ripple demands, and thermal tolerance.

🔗 View jb Small Size Series Now »

📩 Need support? Contact our team for spec sheets, samples, and cross-referencing help:
📧 info@jbcapacitors.com