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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.

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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)

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

Understanding JTD SMD Conductive Polymer Chip Tantalum Capacitors: Performance and Applications

  The JTD SMD Conductive Polymer Chip Tantalum Capacitors by jb Capacitors represent a significant advancement in capacitor technology. These capacitors are designed to deliver exceptional performance, stability, and reliability, making them an ideal choice for a wide range of applications.

Performance Features

1. High Reliability and Stability: JTD SMD capacitors are renowned for their high reliability and stability under various operating conditions. They offer excellent performance even in demanding environments, ensuring consistent functionality and longevity.
2. Low ESR: These capacitors are available in a wide range of capacitance values and voltage ratings, making them versatile components suitable for numerous applications. Whether you need high capacitance for energy storage or specific voltage ratings for various circuits, JTD SMD capacitors can meet those needs.
3. High Capacitance and Voltage Range: UL 94 V-0 plastic case filled with thermosetting resin provides robust protection against environmental hazards.
4. Temperature Stability: JTD SMD capacitors maintain their performance across a broad temperature range, ensuring reliable operation in both high and low-temperature environments.
    

Applications
The versatility and superior performance of JTD SMD Conductive Polymer Chip Tantalum Capacitors make them ideal for a variety of applications:

1. Consumer Electronics:
These capacitors are commonly used in smartphones, tablets, and other portable devices. Their compact size and high reliability make them perfect for modern, high-performance electronics.

2. Automotive Electronics:
In the automotive industry, JTD SMD capacitors are used in electronic control units, infotainment systems, and various sensors. Their ability to withstand harsh conditions and maintain performance is crucial for automotive applications.

3. Industrial Equipment:
Industrial machinery and equipment benefit from the robustness and reliability of JTD SMD capacitors. They are used in power supplies, motor drives, and other critical components.

4. Telecommunications
The low ESR and high capacitance of these capacitors make them suitable for use in telecommunications equipment, where efficient power management and signal integrity are essential.

5. Medical Devices:
In the medical field, the reliability and stability of JTD SMD capacitors are vital for the operation of life-saving equipment. They are used in devices such as defibrillators, diagnostic machines, and monitoring equipment.
 

Datasheet
For detailed specifications and performance parameters, you can refer to the JTD SMD Conductive Polymer Chip Tantalum Capacitors Datasheet.
 

Conclusion
The JTD SMD Conductive Polymer Chip Tantalum Capacitors by jb Capacitors offer a combination of high performance, reliability, and versatility, making them an excellent choice for a wide range of applications. Whether you are designing consumer electronics, automotive systems, industrial equipment, telecommunications devices, or medical equipment, these capacitors can meet your needs.

For more information on JTD SMD Conductive Polymer Chip Tantalum Capacitors, visit jb Capacitors.
 

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Feel free to share your thoughts and applications of JTD SMD capacitors in the comments below! If you have any questions, our sales team is here to assist you.

 jb JCP SMD Polymer Aluminum Solid Electrolytic Capacitors

jb Capacitors manufactures and markets SMD Polymer Aluminum Solid Electrolytic Capacitors with Large permissible ripple current and Low ESR.
Our JCP - SMD Polymer Aluminum Solid Electrolytic Capacitors is very popular in current market.

Category Temperature Range -55C~ +105C
Voltage Range (V): 2.5V ~ 100V.DC
Capacitance Tolerance (+20C, 120Hz): +/-20%

Features:
Low ESR Series
High Ripple Current, miniaturized
SMD, lead free reflow soldering condition at 250℃ peak correspondence

Application:
Applicable to DC/DC converters and AC/DC converters, communication power supply, set-top boxes, router, TV, voltage regulator, mobile phone adapter (mobile phone charger), computer motherboard, graphics card, power supplies, CPU’s, Decoupling circuits and LCD Monitors.

If you use this capacitor in your application, please contact our sales asap, thank you.
#jb #Capacitors #Polymer #JCP #SMD

jb share you the construction of a ceramic capacitor and the benefits for using multilayer ceramic capacitor

A ceramic capacitor is a fixed-value capacitor where the ceramic material acts as the dielectric. It is constructed of two or more alternating layers of ceramic and a metal layer acting as the electrodes.

The composition of the ceramic material defines the electrical behavior and therefore applications.

What are the benefits for using multilayer ceramic capacitor? One of the advantages is that multilayer ceramic capacitors have excellent frequency characteristics, thanks to their low equivalent series resistance (ESR). The term “ESR” refers to the resistance component of a capacitor’s internal electrodes, etc.

jb Capacitors Company High Voltage Ceramic Radial Type Disc Capacitors—JYC series

 JYC series is designed with Compact size with low dissipation factor, Low voltage coefficient, Epoxy encapsulated, Up to 15KV DC working voltage.

They are qualified for high voltage applications, such as DC-DC converters, Voltage multipliers, Radio and TV receiver, Modems, Interfaces, HV power supplies, Electrostatic cleaning power supplies, Ion generator power sources, Baggage scanner, and Industrial laser etc.

JYC series can be customized according to special requirements, take internal parallel or series design to achieve high voltage, large capacity, high operating frequency, high withstand impulse voltage, ultra-low partial discharge requirements and other requirements can meet the different needs of customers.

jb-The Comparison of Aluminum Electrolytic Capacitor and Conductive Polymer Aluminum Solid Capacitor

 Below Table  shows the comparison of Aluminum Electrolytic Capacitor and Conductive Polymer Aluminum Solid Capacitor. Aluminum Electrolytic Capacitor is widely used in the rectifier circuits due to the huge capacity and lower price.

Conductive Polymer Aluminum Solid Capacitors which is one of the high-end capacitors besides tantalum electrolytic capacitor, consisting of high conductive polymer, electrolyte powders. Conductive Polymer Aluminum Solid Capacitor plays a role in rectifying the peak and noise of current, enhancing the stability of power circuit.

	Aluminum Electrolytic Capacitor	Conductive Polymer Aluminum Solid Capacitors
Dielectric material	Electrolyte	PEDT
Appearance	Aluminum shell with plastic cover, and vent open, shown as fig.1.	Aluminum shell with Spec. marked on the top, without vent open, shown as figure 2.
Temp. Feature	Low Temp: Frozen electrolyte	High stability
	High Temp: Swelled or exploded
Cost	Low	High
Size	Big	Small
Resistance	High	Low
Working Frequency	Low	High
Application	Consumer electronics, industrial application, IT & communication and automobile electronics..etc	Circuit Breaker Power Meter, MDL Power Logger, camera, LED signboard, PC, server, IPC, CPU motherboard and Graph card… etc.

jb Popular Radial Type Aluminum Electrolytic Capacitors

 jb Capacitors Company is professional manufacturer for Aluminum Electrolytic Capacitors. We have around 40 years manufacturing experience of Electrolytic Capacitors. The Radial Type series are popular on the markets.

jb can support wide product range of Radial E Caps, including different load life, and can make low Impedance features. We could also check some customized special specification which is not in the datasheet.
Radial E cap can be used on application such as power supplies, audio products, consumer electronics, automotive power, industrial LED lighting, telecom infrastructure etc.
Welcome to contact us if you are interested!

Radial Aluminum Electrolytic Capacitors list
JRA - 2000H at 85°C, Miniature Series 
JRB - 2000H at 105°C, Miniature and Large Capacity 
JRC - 2000H at 105°C, High Frequency and Low Impedance
JRD - 5000H at 105°C, Low Impedance, Long Life
JRG - Long Life at 105°C, Extremely Low Impedance
JRJ - 1000H at 85°C, 7mm Height
JRK - 2000H at 105°C, 7mm Height
JRW - 2000H at 105°C, Extra Lower Impedance
JRQ - 1000H at 105°C, Bi-Polarized

jb Capacitors Company-Radial Polymer Aluminum Solid Electrolytic Capacitors

 jb Capacitor Company has expanded product line time by time. PSS and PSR are kind of our new series. Please noted that we can offer fast lead time and high quality as well. To increase our market share, we release these series. Also, we hope that they can meet the demands of customers. Polymer capacitors can offer high capacitance in small size, long life, high reliability. Below is their features.For more information about polymer’s price, please contact our sales team.

PSS - 2000H at 105°C Standard Low ESR Radial Polymer Aluminum Solid Electrolytic Capacitors Features:
Standard Series. Load life of 2000 hours at 105°C.
Large permissible ripple current
Low ESR at high frequency range
Comply with the RoHS directive.

PSR - 2000H at 105°C Super Low ESR Radial Polymer Aluminum Solid Electrolytic Capacitors Features:
Low ESR Series. Load life of 2000 hours at 105°C.
Large permissible ripple current
Super Low ESR at high frequency range
Comply with the RoHS directive

jb Capacitors Company Offer Small Size SMD Capacitors

 To meet the demands of the market, we launched two series of SMD capacitors. One is JCT, the other one is JCX. Both series can be used on general application.

It can be used on the board with space economic. If you have demands in small size SMD Aluminum Electrolytic capacitors, you can try this for your electronic board.

Also, they have different load life range. JCX has wider load life range from 2000H to 5000H. JCT has 2000H to 3000H. Both series has almost the same features, the biggest difference is their load life.

JCT - 2000H to 3000H at 105°C, Small Size SMD Aluminum Electrolytic Capacitor
JCX - 2000H to 5000H at 105°C, Small Size SMD Aluminum Electrolytic Capacitor

Operating Temperature	-55°C~ +105°C
Voltage Range	6.3V ~ 50V.DC
Capacitance Range	10 ~ 2200μF
Capacitance Tolerance	±20% at 120Hz, 20°C
Leakage Current	The greater value of either 0.01CV or 3μAr μA/after 2minutes (max)

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jb High Power Super Capacitors JGZ series - Radial, Snap-in, Screw Type

Super Capacitors are extraordinarily well suited to any application that expects frequent charge and discharge cycles, extreme operating temperatures, or rapid discharge of high amounts of energy. They are charge much faster than batteries; store more energy than electrolytic capacitors and they are rated in farads (F).

JGZ – Radial, Snap-in, and Screw Type Super Capacitors Features:
High energy and high power.
Low ESR.
Pb-free and RoHS compliant.

JGZ – Radial, Snap-in, and Screw Type Super Capacitors Some applications;
1) Voltage stabilization in start/stop systems
2) Electronic door locks in the event of power failures
3) Regenerative braking systems.

jb Polymer Aluminum Solid Electrolytic Capacitors

Polymer Aluminum Solid Electrolytic Capacitors
PSS - 2000H at 105°C Standard Low ESR Radial Polymer Aluminum Solid Electrolytic Capacitors
PSR - 2000H at 105°C Super Low ESR Radial Polymer Aluminum Solid Electrolytic Capacitors
JCP - SMD Polymer Aluminum Solid Electrolytic Capacitors

jb PSS and PSR is an aluminum solid capacitor with high conductive polymer, which acquires low Equivalent Series Resistance (ESR), excellent noise reduction capability and frequency characteristics.
They are widely used in various applications, which applicable to DC/DC converters and AC/DC converters, communication power supply, set-top boxes, router, TV, voltage regulator, mobile phone adapter (mobile phone charger), computer motherboard, graphics card, power supplies, CPU’s, Decoupling circuits and LCD Monitors.

If you need these kind of capacitors, please feel free to let me know it.
We will be glad to assist and find the most competitive products for you.

jb Polymer Aluminum Solid Capacitors with Competitive Price and Short Lead Time

Due to different characteristics, Polymer Aluminum Solid Electrolytic Capacitors can be divided to Standard, Ultra-low ESR, Higher Capacitance, Long Life Assurance, High Voltage/Long Life Assurance, High Voltage/High Reliability series.

We provide three types of Polymer Aluminum Solid Electrolytic Capacitors.

You know that jb always have products with really competitive price. Also, the quality is still great and the lead time is even only 4 weeks.

PSS - 2000H at 105°C Standard Low ESR Radial Polymer Aluminum Solid Electrolytic Capacitors

PSR - 2000H at 105°C Super Low ESR Radial Polymer Aluminum Solid Electrolytic Capacitors

JCP - SMD Polymer Aluminum Solid Electrolytic Capacitors

Do you have these demand? Would you like to send me your inquiry and let me check our best price for you?

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