Kingtronics International Company — Inspired by Innovation 

For engineers and buyers seeking robust and compact solutions for high-temperature environments, Kingtronics® GKT-EA and GKT-EB series SMD Multilayer Solid Capacitors offer a proven and reliable choice. Both series are rated for 105°C endurance with a lifetime of 2,000 hours, ensuring stable operation under sustained thermal stress.

Designed for Demanding Power Conditions

GKT-EA and GKT-EB are built to perform in power circuits where temperature, space, and reliability are critical factors. Both series are RoHS compliant and lead-free, making them suitable for global applications.

Key Specifications

  • Operating Temperature Range: -55°C to +105°C
  • Rated Voltage Range: 2 ~ 25V DC
  • Capacitance Range:
    • GKT-EA: 2.2µF ~ 470µF
    • GKT-EB: 6.8µF ~ 680µF
  • Endurance Test: 2,000 hours at 105°C
  • Low ESR: As low as 4.5mΩ (100kHz, 20°C)
  • Ripple Current: Up to 4,800mArms (GKT-EB)

Compact Case Sizes for Flexible Layouts

  • GKT-EA Dimensions: 7.3 × 4.3 × 1.9 mm
  • GKT-EB Dimensions: 7.3 × 4.3 × 2.8 mm

The shared footprint simplifies layout design, while different heights accommodate varying capacitance needs without compromising board space.

Stable Electrical Characteristics at High and Low Temperatures

Both series demonstrate outstanding temperature impedance stability:

  • Z(+105°C)/Z(+20°C) ≤ 1.25
  • Z(–55°C)/Z(+20°C) ≤ 1.25

This ensures minimal performance deviation across a wide thermal range — a key requirement for mission-critical systems.

Passed Environmental Tests

Each capacitor series complies with strict environmental reliability testing:

  • Humidity Resistance: 500 hrs at 60°C, 90–95% RH (no voltage)
  • Surge Test: 1,000 cycles with voltage surge through protective resistor
  • Post-test Stability:
    • Capacitance change ≤ ±20%
    • ESR and leakage current ≤ 150% of initial value

Applications (as specified in datasheet)

  • System Board
  • Display Card
  • Small Charger
  • Smart TV

These are ideal platforms where heat resistance, ESR control, and form factor matter.

Learn More & Access Datasheets

  Kingtronics International Company — Inspired by Innovation 

Kingtronics Super Capacitor Banner

In modern electronics, where stability and energy efficiency are essential, super capacitors stand out as a powerful and reliable energy storage solution. Based on the specifications of Kingtronics' DKT series — DKT-DX, DKT-DY, and DKT-DM — each product line meets specific energy storage demands with precision.

Wide Voltage Range & Flexible Capacitance Options

Kingtronics offers a range of super capacitors supporting various voltage ratings:

  • DKT-DX: 2.5V ~ 3.8V
  • DKT-DY: 5.0V / 7.5V
  • DKT-DM: 5.5V / 7.5V

Capacitance values range from 0.1F up to 1400F depending on the model, making them suitable for both compact devices and high-capacity applications.

Stable Performance Across Temperature & Load

Each series is rigorously tested under different conditions to ensure long-term reliability:

  • DKT-DX: Cycle life of 250,000 times at room temperature. Withstands +65°C under rated voltage and +85°C at 3.5V for 1000 hours, with ≤30% capacitance change and ESR ≤2x.
  • DKT-DY / DM: Withstand 1 million cycles at 25°C between VR and ½VR. After 1000 hours at max rated temperature, capacitance drop remains ≤30%, ESR ≤4x.

Extended Operating Temperature Range

  • DKT-DX: -20°C to +70°C
  • DKT-DY: -25°C to +70°C
  • DKT-DM: -40°C to +70°C (best for cold-weather industrial applications)

Designed for Specific Energy Needs

Each model meets different design priorities:

Series Features Recommended Applications
DKT-DX Compact radial type with high capacity (up to 1400F) Smart meters, IoT, UPS, energy backup
DKT-DY Standard energy type with low leakage current Communication equipment, standby power
DKT-DM Low ESR for high pulse current applications Industrial equipment, motor startup

Various Package Dimensions Available

From radial cylindrical types (DKT-DX) to box-shaped combined types (DKT-DY/DM), the series supports multiple sizes, including:

  • Smallest: 5×12 mm / 0.1F
  • Largest: 18×60 mm / 1400F (DKT-DX)

Conclusion

Whether you need compact backup energy for smart devices or robust low-ESR support for industrial startup loads, Kingtronics DKT series Super Capacitors deliver performance backed by reliable testing and consistent design parameters.

Learn More

  Kingtronics International Company — Inspired by Innovation 

In today’s fast-paced electronics market, engineers and sourcing teams need more than just parts—they need reliable electronic components from a supplier they can count on. Kingtronics® has earned that trust worldwide, providing consistent quality, fast response, and global service for decades.

Built for Reliability. Trusted by Professionals.

As a dedicated capacitor supplier, Kingtronics offers a wide range of components including capacitorsdiodes, and trimming potentiometers. All products are manufactured under ISO-certified standards to meet the high demands of industrial and commercial applications.

  • ISO-certified production with strict quality control
  • Long operating life and stable performance under stress
  • Fast lead time and international logistics capability

Global Reach. Local Support.

From North America to Europe and Asia, Kingtronics offers responsive multilingual support. Our dedicated service team ensures that procurement managers and engineers always have the technical backing they need. With Kingtronics, you're not just buying parts—you’re building lasting reliability into your design.

Why Global Clients Trust Kingtronics

  • Over 30 years of manufacturing expertise in passive components
  • Stable supply chain with competitive global pricing
  • Trusted by OEMs and EMS companies worldwide
  • Strong presence in trade shows and B2B sourcing platforms

Whether you are designing for consumer electronics, industrial control, or automotive systems, Kingtronics ensures that your components deliver performance you can count on.

Learn More

  Kingtronics International Company — Inspired by Innovation 

When building reliable and high-performance power circuits, selecting the right film capacitor is a critical decision. Kingtronics® FKT series capacitors—FKT-AA, FKT-AB, and FKT-AC—are engineered to provide excellent electrical performance, stability, and long-term reliability. Each variant addresses specific technical needs, making the FKT series a comprehensive solution for engineers.

FKT Film Capacitors by Kingtronics for Power Circuits

Precision Engineered for Demanding Power Applications

  • Flame-retardant encapsulation (plastic and epoxy resin)
  • High reliability and long lifespan
  • Self-healing property
  • RoHS compliant

FKT-AA: Balanced Performance for Standard Designs

  • Dielectric: Metallized polyester film
  • Operating temperature: –40°C to +105°C
  • Capacitance range: 0.033μF to 68μF
  • Rated voltage: 100VDC, 250VDC, 400VDC, 630VDC
  • Dissipation factor:
    • C < 1μF: ≤ 0.013 @ 10kHz
    • 1μF < C ≤ 10μF: ≤ 0.008 @ 1kHz
    • C > 10μF: ≤ 0.010 @ 1kHz

Use case: General-purpose AC/DC circuits, household appliances, and audio circuits
Advantage: Broad voltage and capacitance support for universal applications

Download FKT-AA Datasheet (PDF)

FKT-AB: Compact and Space-Efficient Design

  • Dielectric: Metallized polyester film
  • Shape: Flat oval axial construction
  • Operating temperature: –40°C to +105°C
  • Capacitance range: 0.01μF to 68μF
  • Rated voltage: 100VDC, 250VDC, 400VDC, 630VDC
  • Dissipation factor:
    • C ≤ 1μF: ≤ 0.013 @ 10kHz
    • 1μF < C ≤ 10μF: ≤ 0.008 @ 1kHz
    • C > 10μF: ≤ 0.010 @ 1kHz

Use case: Equipment requiring compact layout, such as audio systems and dense PCB designs
Advantage: High reliability in a space-saving format

Download FKT-AB Datasheet (PDF)

FKT-AC: High Voltage and Ultra-Low Loss

  • Dielectric: Metallized polypropylene film
  • Operating temperature: –55°C to +100°C
  • Capacitance range: 0.047μF to 56μF
  • Rated voltage: 250VDC, 400VDC, 630VDC, 1000VDC, 1250VDC
  • Dissipation factor:
    • C < 0.1μF: ≤ 0.0015 @ 10kHz
    • 0.1μF < C ≤ 1μF: ≤ 0.0020 @ 10kHz
    • 1μF < C ≤ 4.7μF: ≤ 0.0030 @ 10kHz
    • C > 4.7μF: ≤ 0.0015 @ 1kHz

Use case: High-frequency or high-voltage applications such as industrial power modules, inverter circuits, and power supplies
Advantage: Exceptional low loss performance and voltage endurance

Download FKT-AC Datasheet (PDF)

FKT Film Capacitor Series Specification Summary

FKT-AA

  • Dielectric: Polyester film
  • Capacitance Range: 0.033μF – 68μF
  • Voltage Range (DC): 100V – 630V
  • Dissipation Factor (Typical): ≤ 0.008 – 0.013
  • Best Fit Applications: General AC/DC circuits, appliances, audio systems
  • Key Benefit: Versatile choice for standard designs with broad voltage and capacitance support

FKT-AB

  • Dielectric: Polyester film (compact design)
  • Capacitance Range: 0.01μF – 68μF
  • Voltage Range (DC): 100V – 630V
  • Dissipation Factor (Typical): ≤ 0.008 – 0.013
  • Best Fit Applications: Space-limited circuits, compact PCB layouts, audio circuits
  • Key Benefit: Space-efficient form factor with stable electrical performance

FKT-AC

  • Dielectric: Polypropylene film
  • Capacitance Range: 0.047μF – 56μF
  • Voltage Range (DC): 250V – 1250V
  • Dissipation Factor (Typical): ≤ 0.0015 – 0.0030
  • Best Fit Applications: High-frequency and high-voltage applications (inverters, power modules, etc.)
  • Key Benefit: Ultra-low loss and high voltage endurance for precision power circuits

Conclusion: Film Capacitors That Deliver Results

Each model in the FKT film capacitor family is built for reliability and precision. Whether you're designing power filters, coupling circuits, or frequency-sensitive modules, the FKT-AA, FKT-AB, and FKT-AC capacitors deliver dependable performance under demanding conditions.

Learn More

      Kingtronics International Company — Inspired by Innovation 

Kingtronics WhatsApp Support

In fast-paced industries like electronics manufacturing and sourcing, speed matters. Whether you're dealing with urgent procurement deadlines or need quick clarification on product specs, waiting days for email responses is not ideal.

To better support our global clients, Kingtronics now offers real-time assistance via WhatsApp.

What you can do on WhatsApp

  • Quotations on capacitors, resistors, bridge rectifiers, trimmers, and more
  • Sample requests and delivery information
  • Stock availability and lead times
  • Technical comparisons or model selection support
  • Datasheets, RoHS/REACH declarations, test reports

Our team responds quickly during business hours and can follow up with detailed documents as needed.


Why WhatsApp

  • Fast, direct communication with our sales and support team
  • Convenient platform many clients already use
  • Efficient exchange of product codes, specs, photos, and files
  • Better collaboration between purchasing, R&D, and vendors

WhatsApp is not just for casual chat. For many of our partners, it’s become the most efficient channel for technical and commercial support.

How to reach us

You can contact Kingtronics on WhatsApp in two ways:

  • Scan the QR code below
  • Click the button to start chatting directly

WhatsApp QR Code

Start the conversation

If you're looking for a faster way to request information, compare models, or confirm availability, WhatsApp offers the convenience and immediacy today's sourcing requires.

Contact Kingtronics via WhatsApp today and experience a more efficient way to work with us.

      Kingtronics International Company — Inspired by Innovation 

Why Choose RKT Trimming Potentiometers for Circuit Calibration

 

Trimming potentiometers play a crucial role in fine-tuning analog circuits, ensuring long-term stability and performance. Kingtronics® RKT series includes seven models (RKT-WA to RKT-WG) tailored for diverse calibration needs.

Precise Calibration in a Compact Footprint

  • High adjustment accuracy for fine resistance tuning
  • Stable electrical performance across temperature and time
  • Robust construction for enhanced durability
  • Multiple configurations to suit various PCB layouts

With resistance values from 100Ω to 2MΩ and power ratings up to 0.5W, RKT potentiometers are ideal for voltage dividers, amplifiers, oscillators, and sensor tuning.

Meet the 7 RKT Models

Model Adjustment Style Key Feature
RKT-WA Top adjust Round Vertical board compatibility
RKT-WB Side adjust Round Suited for horizontal layouts
RKT-WC Top adjust Square Space-saving design
RKT-WD Top adjust Square Reinforced mechanical stability
RKT-WE Side adjust Square Precision side-entry tuning
RKT-WF Top adjust Square sealed Dust-resistant for harsh environments
RKT-WG Side adjust Square sealed Moisture-proof and rugged

Need layout flexibility? Top or side adjust, round or square – there's an RKT option for every application.

Common Applications

  • Manual analog circuit calibration
  • Voltage reference adjustments
  • Sensor signal tuning
  • Amplifier gain setting
  • Industrial control systems
  • Telecommunication equipment
  • Consumer electronic devices

Why Engineers Prefer RKT

  • Reliable contact design to avoid signal dropouts
  • RoHS compliance and international standard adherence
  • Competitive cost with consistent availability
  • Custom resistance values available upon request

 

 

 

              Kingtronics International Company — Inspired by Innovation 

One Force, Multiple Footprints – Smarter Tact Switch Selection Starts Here

For engineers working on space-constrained PCB layouts, selecting a tact switch is rarely about just one factor. Between mounting footprint, actuation feel, and electrical specs, finding a switch that fits without adding complexity can be a challenge.

That’s where the Kingtronics SMD Tact Switch series offers a practical solution: three compact surface-mount switches, one unified spec — so you can design smarter without sacrificing consistency.

One Standard Actuation Force – 1.6 ± 0.5N

All three models in the Kingtronics series feature a consistent 1.6N actuation force, giving your design a uniform tactile experience across your product lineup.

Unified Electrical Specs Across All Models

  • Rating: 50mA / 12V DC
  • Withstand Voltage: 250V AC
  • Insulation Resistance: ≥100MΩ
  • Contact Resistance: ≤50mΩ

Multiple Footprints – Layout Flexibility Without Re-Evaluation

Model Dimensions Datasheet Link
WKTS1020040D 2.0 × 4.0 mm Download PDF
WKTS1035060D 3.5 × 6.0 mm Download PDF
WKTS2035060D 3.5 × 6.0 mm (Alt pin layout) Download PDF

Designed for SMT – Ready for Automation

All models in this series are built for surface-mount (SMD) reflow processes, making them ideal for modern, automated assembly lines.

Final Thought – One Spec, Less Work

If you're tired of juggling different specs for every footprint, it’s time to simplify.
One force. One spec. Three smart options.

Explore More

Learn more from our product specs:

Kingtronics SMD Tact Switch Series – Unified Specs, Flexible Fit

Visit our website for more details:

www.kingtronics.com

Contact us directly:
info@kingtronics.com

              Kingtronics International Company — Inspired by Innovation 

Contact Kingtronics via Microsoft Teams

Kingtronics is now on Microsoft Teams — because getting answers shouldn’t take days.

If you've ever waited two days for a simple reply — “Is this part in stock?” or “Can I get a quick quote?” — you know the cost:

  • 💡 Design delays
  • 💡 Sourcing headaches
  • 💡 Decision fatigue

We’re cutting the delay.
Now you can message us directly on Teams — no tickets, no forms, no guessing who to contact.
Just real-time answers, from real people, exactly when you need them.


What can you do via Teams?

  • Ask about stock, pricing, or lead times
  • Share drawings, BOMs, or test specs
  • Get matched to the right person — instantly
  • Skip the email loop and get straight to the point

It’s not just faster — it’s built around how modern global teams actually make decisions.


We’re not replacing email — but if you prefer talking to people instead of threads, this is for you.

📩 Contact us at info@kingtronics.com
🌐 Visit our website: www.kingtronics.com

One message. One connection. Faster answers.

              Kingtronics International Company — Inspired by Innovation 

Explore key design factors and discover reliable options for long-term performance.

When stability matters, plastic film capacitors remain one of the most trusted passive components for engineers. From power supplies and automation systems to lighting controls and industrial inverters, their low loss and consistent performance make them indispensable in modern circuit design.

But how do you choose the right one—especially when reliability and layout flexibility are critical?

1. Low Dissipation = High Efficiency

In high-performance applications, energy loss can’t be ignored. A low dissipation factor (DF) prevents overheating and extends capacitor life.
✅ Kingtronics FKT-MM offers an ultra-low DF of 0.1%, helping maintain circuit stability even under prolonged operation.

2. Choose the Right Structure for Your Layout

Whether you're designing a compact power module or an industrial control board, capacitor form factors matter.
The FKT series offers multiple structures — Mini Box, Stacked, and Box Type — with various pitch and lead options to simplify PCB layout without compromise.

3. Built for Reliability Under Real Conditions

More than just capacitance and voltage, the internal construction and film quality determine how a capacitor performs over time.
The Kingtronics FKT-MS / MT / MM series is known for consistent thermal stability and endurance under switching stress, ensuring long-term reliability in demanding environments.

4. Global-Ready & RoHS Compliant

For projects that cross borders or industries, compliance matters.
The entire FKT series is RoHS-compliant, and widely used in industrial electronics, energy systems, and control modules.

💡 Looking for Reliable Plastic Film Capacitors?

Whether you're upgrading an industrial system or building from scratch, the Kingtronics FKT Series gives you the performance, flexibility, and reliability you need — without compromise.

🔍 Learn more from our product specs:
www.kingtronics.com/Film-Capacitors/index.html

🌐 Visit our website for more details:
www.kingtronics.com

✉️ Contact us directly:
info@kingtronics.com

Kingtronics FKT Series Film Capacitors

              Kingtronics International Company — Inspired by Innovation 

Power loss might only last a few milliseconds—but that’s all it takes to corrupt memory, crash modules, or reset real-time clocks (RTC). In critical applications like smart meters, embedded memory modules, or compact UPS control boards, even a short interruption can cause data errors, configuration loss, or system downtime.

While traditional battery backups and large capacitors have long been used, they often come with trade-offs: bulky form factors, limited lifespans, or slow response times.

That’s where Kingtronics DKT-DA Super Capacitor steps in.

Reliable Backup for RAM, RTC & Embedded Modules

The DKT-DA series is designed to deliver rapid-response energy storage in a compact footprint, tailored for:

  • RAM retention during brief outages
  • RTC stability even in fluctuating voltage environments
  • Smart meter protection, enabling seamless data logging and time tracking

With 5.5V rated voltage and up to 1.5F capacitance, this coin-type super capacitor supports flexible mounting orientations (C/V/H), making it ideal for modern, space-constrained designs.

More than just backup power, it’s design assurance—helping prevent unexpected failures and ensuring long-term system integrity.

Long Lifecycle, Minimal Maintenance

The DKT-DA boasts up to 500,000 charge/discharge cycles, eliminating many of the reliability concerns that come with batteries. It’s maintenance-free, stable across operating temperatures, and ready for harsh environments.

Whether you’re upgrading a smart grid solution or refining your embedded system architecture, reliable power backup isn’t a luxury—it’s a necessity.

Power Stability Starts Here

We’re here to help you optimize your systems and designs.

Learn more from our product specs:
https://www.kingtronics.com/Super-Capacitors/index.html

Visit our website for more details:
www.kingtronics.com

Contact us directly:
info@kingtronics.com

when-backup-matters-most-designing-power-stability-for-smart-meters-and-data-modules

Contact us

Tel: (86) 769 8118 8110
Tel: (852) 8106 7033
Fax: (852) 8106 7099
E-mail: info@kingtronics.com
Microsoft Teams: Kingtronics.sales via Teams
WhatsApp: Chat with us on WhatsApp
Web: www.Kingtronics.com
YouTube: www.youtube.com/c/Kingtronicskt

About

Kingtronics International Company was established in 1995 located in Dongguan City of China to handle all sales & marketing for factories located in Chengdu, Sichuan and Zhaoqing, Guangdong, China. In 1990, we established the first factory to produce trimming potentiometer and in 1999 we built up new factory in Zhao Qing, Guangdong. Now with around 850 workers, Kingtronics produce trimming potentiometers, dipped tantalum capacitors, multilayer ceramic capacitors, and diode & bridge rectifier. We sell good quality under our brand Kingtronics, and Kt, King, Kingtronics are our three trademarks. All our products are RoHS compliant, and our bridge rectifier have UL approval. Please visit our Products page, you could please download all our PDF datasheet and find cross reference for our Trimming Potentiometer and capacitors.

Tantalum and Ceramic Capacitors Cross Reference ↓ Download
Diodes & Rectifiers List(PDF: 97KB) ↓ Download
Trimming Potentiometer Cross Reference ↓Download

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