Compact & Durable: FKT Capacitors for Demanding Applications

  Kingtronics International Company — Inspired by Innovation 

Choosing the right capacitor can make or break your circuit—especially when you're working with limited space or dealing with unstable power. Many engineers have shared stories of failed prototypes simply due to the wrong capacitor type. That’s why Kingtronics® FKT Series has become a favorite: it’s compact, reliable, and made to last under pressure.

What Makes FKT Capacitors Stand Out?

• Flame-retardant encapsulation (plastic + epoxy resin)
• Self-healing properties for higher durability
• RoHS-compliant and long operational life

Which Series Is Right for You?

• FKT-AA: Best for standard AC/DC circuits, household appliances, and audio systems. Range: 0.033μF–68μF, 100–630VDC.
• FKT-AB: Compact oval axial design for tight PCB spaces. Same electrical performance in smaller form.
• FKT-AC: Ideal for high-frequency, high-voltage circuits like inverters and industrial power modules. Rated up to 1250VDC with ultra-low loss.

Common Questions We Get

“Can I just replace any capacitor with an FKT?” Not always. Be sure to match the capacitance, rated voltage, and form factor to your layout. If you're not sure, we’re happy to help you compare.

Explore Real-World Applications

Whether you're working on LED drivers, power filters, or energy-saving appliances, FKT capacitors deliver solid performance. See how they’ve been used in actual designs.

👉 Explore the full FKT Series

Contact: info@kingtronics.com

How to Get Fast Capacitor Quotes Online? Try Kingtronics WhatsApp Support

      Kingtronics International Company — Inspired by Innovation 

If you're working in electronics procurement or design, you know that getting fast and reliable information from suppliers can be a challenge. Waiting for email replies can slow down your project timelines — especially when time-sensitive decisions are involved.

That’s why many professionals are switching to instant messaging platforms like WhatsApp to communicate with component suppliers. It’s direct, fast, and easy to track.

Why WhatsApp is Useful for Electronics Sourcing

• Skip the long email chains and get responses within minutes
• Attach part numbers, drawings, or photos instantly
• Check stock availability and delivery time in real time
• Build long-term communication channels with vendors

What You Can Request from Kingtronics

Kingtronics provides professional support via WhatsApp to help you with:

• Capacitor quotations (film, aluminum electrolytic, SMD types, and more)
• Sample requests for new design validation
• Availability checks and production lead times
• Technical support or cross-reference for discontinued parts

All inquiries are handled by experienced sales staff, not chatbots.

How to Contact Kingtronics via WhatsApp

You don’t need to fill out any forms. Just click the button below or scan the QR code:

Message Kingtronics on WhatsApp

Final Tip

If you’re frequently sourcing components or submitting RFQs, setting up a WhatsApp contact with your supplier can save time and simplify future communication.

Kingtronics has years of experience in capacitor manufacturing and provides responsive international support. Give it a try and streamline your sourcing process.

Compact Trimming Resistors for Accurate PCB Adjustment – RKT Series

      Kingtronics International Company — Inspired by Innovation 

When designing high-performance electronic circuits, engineers often face the challenge of achieving precision without compromising on space. That’s where Kingtronics® RKT Trimming Resistors come in — offering compact, durable, and flexible solutions for board-level calibration.

Small Footprint, Big Accuracy

The RKT series is engineered with space-constrained applications in mind. Whether it’s a consumer gadget, a sensor module, or an industrial PCB, these trimming resistors deliver:

• Compact size: Fits dense circuit layouts
• Stable resistance values: Ensures long-term accuracy
• Top and side adjustment options: Matches your assembly flow
• Various shapes: Round, square, sealed — for mechanical fit and protection

Each model in the RKT series supports resistance values from 100Ω to 2MΩ, enabling fine-tuning for both analog and digital systems.

Mechanical Versatility for Modern PCBs

From vertical boards to low-profile builds, the RKT line includes multiple mounting styles:

Model	Adjust Type	Form	Ideal For
RKT-WA	Top	Round	Compact vertical placement
RKT-WB	Side	Round	Slim horizontal applications
RKT-WC~WD	Top	Square	Tight layout or double-sided PCBs
RKT-WE	Side	Square	Easy reach during rework
RKT-WF~WG	Sealed	Square	Harsh or dusty environments

Their small mechanical footprint helps maintain clearance in sensitive areas — a major plus for compact product design.

Targeted Applications

While general trimmers aim for versatility, RKT excels in on-board fine-tuning where space, stability, and control are critical. Common use cases include:

• Sensor calibration modules
• Medical and lab electronics
• IoT device tuning
• Power supply feedback trimming
• Audio preamp balancing

Why Choose RKT Over Standard Trimmers?

• Lower profile: Saves valuable PCB real estate
• Sealed options: Ideal for rugged environments
• Stable adjustment: Reliable under varying loads and temperatures
• RoHS compliant: Environmentally safe and globally sourced

Explore the Series

RKT trimming resistors are stocked and ready to ship. Learn more on our official site:

→ www.kingtronics.com

→ Datasheets

Contact: info@kingtronics.com

Three Switches, One Less Headache – Simplify Your Next Layout

              Kingtronics International Company — Inspired by Innovation 

 

If you're designing PCBs for consumer electronics, IoT devices, or compact industrial controls, you’ve likely asked yourself this before:

“Which tactile switch model fits best—and do I need to test each one from scratch?”

The truth is, tact switch selection can be surprisingly time-consuming. With dozens of options that vary by footprint, actuation force, and electrical specs, a small component often ends up creating a big bottleneck in your layout process.

That’s why the Kingtronics SMD Tact Switch Series offers a smarter approach:
Three footprint options. One unified spec. Zero layout friction.

 Same Electrical Performance – No Revalidation Needed

All three switches in the series share the exact same core parameters:

• Operating rating: 50mA / 12V DC

• Withstand voltage: 250V AC

• Insulation resistance: ≥100MΩ

• Contact resistance: ≤50mΩ

• Actuation force: 1.6 ± 0.5N

So whether you’re using a 2.0×4.0mm layout or a 3.5×6.0mm form, you can skip the revalidation and move forward with confidence.

Multiple Footprints – Built for Flexible PCB Designs

Here’s what you’re working with:

• WKTS1020040D – 2.0 × 4.0 mm
  Download PDF

• WKTS1035060D – 3.5 × 6.0 mm
  Download PDF

• WKTS2035060D – 3.5 × 6.0 mm (alternate pin layout)
  Download PDF

Choose the one that fits your mechanical design best—no electrical tradeoffs, no need to adjust tactile response, and no spec surprises during testing.

SMT-Ready for Modern Production

Every model is surface-mount compatible and reflow-process friendly. That means you can integrate them directly into your automated line without extra tooling or through-hole complexity.

Final Word: Keep It Simple

Why complicate your layout with mismatched specs and varied part behaviors?

With Kingtronics’ unified-spec SMD tact switch series, you only need to validate once—then choose the right footprint for every design.

🔗 Explore More on Our Website

Or reach out to us directly at info@kingtronics.com

Talk Less. Wait Less. Work Smarter – Connect with Kingtronics on Teams

              Kingtronics International Company — Inspired by Innovation 

In a fast-moving supply chain, speed isn't just about shipping — it’s about answers.

Every engineer and sourcing manager has been there:
A quote takes two days.
Stock status needs a follow-up.
You’re juggling specs, deadlines, and emails... and still waiting.

We’ve simplified that.

📢 Kingtronics is now directly available via Microsoft Teams.

Just open a chat, drop your question, and get the information you need — in real time.

 What can you do on Teams?

• Get instant quotes and stock updates

• Ask technical questions and share BOMs or drawings

• Skip email loops and get connected to the right contact

• Communicate the way your team already works — efficiently

We're not saying goodbye to email.
But when time matters, Teams is your faster line to Kingtronics.

📩 Prefer email? We’re still at info@kingtronics.com

Designing with Stability in Mind: Key Capacitor Traits Engineers Shouldn’t Overlook

              Kingtronics International Company — Inspired by Innovation 

Learn the critical capacitor traits that impact system performance – and how to choose them wisely.

Why Capacitor Selection Defines System Stability

In power electronics, industrial automation, and control applications, circuit stability is not negotiable. One faulty component — especially a capacitor — can undermine years of development and validation.

Among passive components, film capacitors are often favored for their balance of insulation strength, low energy loss, and mechanical robustness. But not all film capacitors offer the same performance under stress.

Dissipation Factor: A Hidden Efficiency Metric

The dissipation factor (DF) indicates how much power is lost as heat inside the capacitor. A lower DF translates to lower self-heating, better efficiency, and longer operational lifespan.

For most switching and filtering applications, a DF under 0.5% is acceptable. However, when long-term reliability is required, ultra-low DF products provide an extra layer of safety.

The Kingtronics FKT-MM series offers a DF as low as 0.1%, making it suitable for heat-sensitive or power-critical environments.

Thermal Stability and Electrical Integrity

Real-world conditions — such as elevated ambient temperatures or repeated switching stress — cause internal drift in many capacitor types. Parameters like capacitance, ESR, and insulation resistance can degrade over time.

The FKT-MS / MT / MM series is manufactured with high-grade film and controlled processes to ensure minimal electrical drift even under extended operating conditions.

This consistency helps avoid performance degradation in mission-critical systems.

Flexible Packaging for Design Integration

Designers are increasingly constrained by space and layout limitations. A single capacitor model with rigid form factors can create routing problems or force unnecessary PCB redesigns.

The FKT series is available in Mini Box, Stacked, and Box Type formats, with multiple pitch and lead length options. This flexibility enables easier mechanical integration without sacrificing performance.

Global Compliance and Application Readiness

Compliance with RoHS and related safety standards is critical for global deployment. All FKT series capacitors are RoHS-compliant and widely used in industrial, energy, and power control sectors.

These components are pre-qualified for international OEMs, reducing barriers for export and certification.

Ready to Specify Film Capacitors That Support Real-World Performance?

The Kingtronics FKT-MS / MT / MM series combines technical consistency with mechanical versatility, offering engineers a reliable choice for modern high-performance designs.

Learn More

Product Series Overview:
www.kingtronics.com/Film-Capacitors/index.html

Official Website:
www.kingtronics.com

Contact:
info@kingtronics.com

Solving the Hidden Power Problem in RTC and RAM Designs

In embedded systems, the real risk often hides in the milliseconds — when a sudden voltage dip silently erases memory or resets the real-time clock (RTC), leading to data corruption, time desynchronization, or even system crashes.

Designers often overlook this vulnerability during prototyping, only to discover its impact during field testing or customer complaints.

So, how do you protect volatile memory and timing circuits from power interruptions—without overcomplicating your design?

Meet the Kingtronics DKT-DA Series:
A compact 5.5V coin-type super capacitor specifically engineered for fast-response backup in RTC and RAM applications.

Why Power Gaps Break Your RTC & RAM Systems

• RTC modules lose track of time if power supply flickers
• RAM loses temporarily stored data if not flushed before a drop
• Traditional capacitors often charge too slowly or discharge too quickly
• Batteries offer capacity but degrade fast and require maintenance

These problems are invisible in stable lab conditions—but in real-world smart meters, industrial controllers, or portable electronics, they're common failure points.

DKT-DA Super Capacitor: Spec’d to Solve These Issues

Feature	Specification
Rated Voltage	5.5V
Surge Voltage	5.8V
Capacitance Range	0.1F to 1.5F
Operating Temp	-25°C to +70°C
Cycle Life	500,000 cycles at 25°C
Configurations	C / H / V mounting types
Applications	RTC, SRAM, smart meters, UPS modules

Thanks to its ultra-low ESR, quick response time, and maintenance-free design, DKT-DA ensures your system has enough energy to bridge micro-outages, letting microcontrollers properly shut down or store critical state.

Fit Your Design, Not the Other Way Around

With various mounting options and compact footprints (as small as Ø11.5mm × 6.4mm), you can choose a model that fits snugly into your PCB without redesigning your layout.

Examples:

• DKT-DA5R5C104 – 0.1F, 5.5V, Ø13.0 × 6.5mm, 5mm pin
• DKT-DA5R5H105 – 1.0F, 5.5V, Ø18.7 × 6mm, 20mm pin
• DKT-DA5R5V155 – 1.5F, 5.5V, Ø18.7 × 20.2mm, 5mm pin

Applications You Can Trust It In

• Smart meters (timestamping & memory logging)
• RTC modules (timekeeping during micro-cuts)
• SRAM buffers (volatile data protection)
• UPS controller boards
• Automotive electronics & industrial sensors

Wherever data integrity matters and power isn't always stable — this is your solution.

No Maintenance, Long Life, RoHS Compliant

No batteries to replace. No special charging circuit. Just robust energy buffering when you need it most — up to 500,000 cycles of reliable operation.

Ready to Fix That Power Gap?

Full specifications here:
View DKT-DA Super Capacitor Datasheet

Explore more solutions:
www.kingtronics.com

Talk to us directly:
info@kingtronics.com