Kingtronics International Company — Inspired by Innovation

OEM/EMS procurement teams often face three major pain points: high capacitor prices, long lead times, and stock shortages. These challenges raise BOM cost and create project delays.

Kingtronics addresses these challenges with DA Coin Type Super Capacitors (5.5V) and DM Combined Type Super Capacitors (5.5V / 7.5V). Both are RoHS-compliant, affordable super capacitors designed for memory backup, RTC modules, UPS, lighting, industrial control, and consumer electronics.

Cost Down Without Compromise

Compared with Nichicon, VINATECH, KEMET, KAMCAP, Eaton, and Korchip, Kingtronics delivers affordable super capacitors that cut BOM cost by up to 30% while ensuring compliance and performance.

Reliable Lead Time & Supply

With stable sourcing and production capacity, DA + DM super capacitors help OEM/EMS companies avoid allocation risks and keep projects on schedule.

Versatile Applications

  • DKT-DA Series – Compact coin type for RTC backup capacitor, smart meter capacitor, digital camera capacitor.
  • DKT-DM Series – Low ESR, long cycle life for industrial super capacitors, UPS modules, medical backup.

Key Product Advantages

DA Series (Coin Type 5.5V)

  • Compact size with large capacity
  • Cycle life: 500,000 cycles at 25°C
  • Applications: RAM, smart meter, digital camera, clock circuit

DM Series (Combined Type 5.5V / 7.5V)

  • Low internal resistance (low ESR)
  • Cycle life: 1,000,000 cycles at 25°C
  • Applications: UPS, lighting, industrial modules, medical equipment

Ready to Optimize Your BOM?

Kingtronics DA + DM Super Capacitors are the affordable, reliable, fast-delivery solution trusted by OEM/EMS worldwide.

▶ Watch How DA + DM Super Capacitors Cut BOM Cost

Kingtronics International Company — Inspired by Innovation

Kingtronics RF tuning capacitor solution: SMD ceramic trimmer (KKT), high Q MLCC RF filter (BKT), quartz crystal oscillator (QKT) for wireless module components

RF tuning capacitor SMD ceramic trimmer high Q MLCC RF filter quartz crystal oscillator wireless module components

For wireless devices (Bluetooth, RFID, IoT sensors, security systems), designs typically require an RF tuning capacitor, an RF filter capacitor, and a frequency reference. Sourcing these from multiple vendors can add process variation and coordination overhead. Below lists the commonly used component types with industry aliases for clarity.

One-Stop RF Components (with industry terminology)


KKT — SMD ceramic trimmer (also called: tuning capacitor / variable capacitor / trimmer cap): used for fine adjustment in high-frequency sections to correct drift and maintain link stability.
BKT — high Q MLCC for RF filtering (also: RF bypass/decoupling capacitor, matching capacitor; typical dielectric: C0G/NP0): low ESR/low loss to improve RF transmission efficiency and filter cleanliness.
QKT — quartz crystal / oscillator (also: crystal unit / quartz resonator / XO): provides precise frequency reference for timing and synchronization.

These three wireless module components are frequently used together. Consolidated sourcing helps align specifications, reduce qualification effort, and simplify logistics.

Selection considerations


  • Trimmer (tuning/variable): adjustment range, Q at operating frequency, temperature stability.
  • High-Q MLCC: dielectric (C0G/NP0), ESR/Q vs. frequency, tolerance, self-resonant behavior.
  • Quartz: frequency/tolerance, load capacitance, ESR, aging, package (through-hole/SMD).

Reference: KKT product details. For part matching, samples, or lead-time information on high Q MLCC / quartz, please see: contact page.

Product details (KKT) Request info / Samples

 

Kingtronics International Company — Inspired by Innovation

Motor capacitor comparison made simple. Find the best motor capacitor for refrigerator, capacitor for air conditioner motor, and a reliable compressor capacitor.

When it comes to motor capacitor comparison, engineers and procurement teams often ask: CBB60 vs CBB61 vs CBB65 – which motor capacitor fits my application? This guide breaks down the differences, shares sales insights, and provides a quick FAQ to help you decide.

Why Motor Capacitor Selection Matters

Choosing the right capacitor affects efficiency, reliability, and cost. Whether you need the best motor capacitor for refrigerator, a capacitor for air conditioner motor, or a compressor capacitor for industrial use, matching the series to the job ensures stable performance.

CBB60 vs CBB61 vs CBB65 – Quick Specification Overview Comparison

Model Capacitance Range Rated Voltage Main Applications Key Features
CBB61 1–20 µF 250V / 450V AC Small household appliances (fans, washing machines) Compact size, low dissipation factor, high insulation resistance
CBB60 1–100 µF 250V / 450V AC Refrigerators, air conditioners, general motors Good self-healing, strong surge resistance, versatile range
CBB65 2–100 µF 370V / 450V AC Compressors, industrial motors High safety, strong over-current capacity, heavy-duty design

FAQ – CBB60 vs CBB61 vs CBB65

Q1: What is the best motor capacitor for refrigerator?
CBB60 is widely used in refrigerators thanks to its durability and broad 1–100 µF range.

Q2: Which capacitor is ideal for air conditioner motors?
CBB60 fits well, offering higher capacitance and voltage stability as a capacitor for air conditioner motor.

Q3: Which one should I choose for compressors or industrial motors?
CBB65 is designed for heavy-duty applications, making it a reliable compressor capacitor.

Q4: Why would I choose CBB61?
→ For small appliances like ceiling fans or washing machines, CBB61 is compact and cost-effective.

Market Insights

  • Household Trend (CBB61, CBB60): Growing demand for energy-efficient appliances.
  • Industrial Trend (CBB65): Automation and compressor-driven equipment require high-voltage reliability.
  • Sales Feedback: Retailers place quick orders but re-orders can be slower — keep multiple models ready for small-batch needs.

How to Choose – Simplified Guide

  • Small household appliances → CBB61
  • Refrigerators & air conditioners → CBB60
  • Compressors & industrial motors → CBB65

This motor capacitor comparison helps engineers and purchasing managers quickly identify the right capacitor for their application.

Conclusion & Call to Action

Still unsure which motor capacitor fits your design? Download the full datasheet and explore detailed specifications.

Kingtronics motor capacitor comparison – CBB60 vs CBB61 vs CBB65
CBB60 / CBB61 / CBB65 quick view

 

Kingtronics International Company — Inspired by Innovation

When engineers search for high voltage film capacitors, EV DC link capacitors, or renewable energy capacitors, they expect components with long-term stability, low dissipation factor, and reliable insulation resistance. As a professional manufacturer, Kingtronics provides the FKT-AC and FKT-AD axial polypropylene (PP) film capacitors, designed for EV charging stations, solar inverters, and industrial control systems.

Watch our factory in action — manufacturing capability & quality control for film capacitors.

Why Polypropylene (PP) Film Capacitors for EV & Renewable Systems?

  • High Voltage Range: suitable for DC link & inverter nodes in EV chargers and renewable systems.
  • Low Dissipation Factor: enables higher efficiency under switching frequencies.
  • Wide Operating Temperature: reliable performance in harsh environments.
  • Self-healing Property: enhances long-term stability and safety.
  • Flexible Options: axial construction (cylindrical / oval), broad capacitance selections.

Axial Film Capacitors — Series at a Glance (PP vs PET)

Series Dielectric Typical Applications Voltage / DF / Temp* Notes
FKT-AC / FKT-AD Polypropylene (PP) EV charging DC link, solar/wind inverters, industrial control High voltage capability; low dissipation factor; wide operating temperature. Engineer-centric; reliability-focused.
FKT-AA / FKT-AB Polyester (PET) Audio crossovers, DIY/consumer, household electronics Broad capacitance options; compact size; stable for signal/AC coupling in audio. Community-oriented; case-based content.

* For exact ratings (voltage range, dissipation factor by frequency, operating temperature, dimensions), please refer to each series datasheet on the product page.

Applications

  • EV Charging Stations — DC link & filtering in fast chargers (high voltage film capacitor / EV film capacitor).
  • Solar & Wind Inverters — renewable energy capacitor for long-term stability and efficiency.
  • Industrial Power Control — drives, UPS, automation (reliable axial film capacitors / DC link capacitors).

By partnering directly with a film capacitor manufacturer, you gain consistent quality, reliable lead times, and flexible supply for your EV, renewable, and industrial projects.

Keywords: high voltage film capacitor, EV film capacitor, DC link capacitor, renewable energy capacitor, axial film capacitor, polypropylene film capacitor, industrial control capacitor, solar inverter capacitor, manufacturer.

Axial polypropylene film capacitors for EV charging DC link and renewable energy inverters

Kingtronics International Company — Inspired by Innovation

Engineers often waste hours searching for electronic components online, verifying datasheets, and comparing parts across multiple sites. Our smarter platform centralizes component searchdatasheet downloads, and BOM search, helping you make sourcing decisions faster and with confidence.

🎥 Watch how engineers worldwide use our website for faster datasheet access and smarter sourcing decisions.

Our new website is designed to deliver:

  • Save Time → Find capacitors, diodes, resistors in seconds with quick search
  • Ensure Accuracy → Get instant datasheet downloads without delay
  • Decide Smarter → Compare parts and run BOM search to cut procurement workload
  • Build Trust → Source from a global trusted supplier of electronic components

With our platform, engineers can run quick component sourcing, access reliable datasheets instantly, and manage their BOM search with fewer errors. This makes sourcing faster, easier, and more reliable for global buyers and design teams.

👉 Explore the new website

Kingtronics New Website

 

Kingtronics International Company — Inspired by Innovation

Introduction: Why Diode Selection Matters

For many engineers, selecting the right diode or rectifier is not as simple as checking a datasheet. The challenge lies in balancing multiple parameters—voltage, current, recovery time, and package type— while ensuring long-term reliability. This diode selection guide simplifies the process into clear rectifier selection steps that reduce design risks and improve efficiency.

1. Types of Diodes You Should Know

Before diving into how to choose diode for your design, let’s review the key categories:

  • Schottky Diodes – Low forward voltage drop, fast switching, ideal for power supplies and high-frequency circuits.
  • Fast Recovery Diodes – Optimized for reduced reverse recovery time, commonly used in lighting drivers, motor control, and industrial automation.
  • TVS (Transient Voltage Suppression) Diodes – Protect sensitive circuits from ESD, surges, and transient spikes. Essential in automotive, communication, and industrial environments.
  • General Rectifiers – Reliable, high-voltage devices used for AC/DC rectification and industrial power systems.

Diode & Rectifier Selection Guide Table

Type Key Features Typical Applications Explore Products
Schottky Diode Low VF (0.2–0.4V), very fast switching, low power loss Power supply rectification, DC-DC converters, RF circuits View Schottky Series
Fast Recovery Diode Short reverse recovery time, moderate VF, high efficiency LED drivers, motor control, industrial automation, SMPS View Fast Recovery Series
TVS Diode Transient voltage suppression, protects against ESD & surges Circuit protection, automotive, communication, consumer electronics View TVS Series
General Rectifier High voltage rating, high surge current capability, reliable AC/DC rectification, power adapters, industrial power supply View Rectifier Series

Engineers can simplify component sourcing by choosing from manufacturers who provide full series coverage. Kingtronics offers a complete range of Schottky, Fast Recovery, TVS, and General Rectifiers — all with international certifications and competitive lead times.

2. Key Selection Criteria (Rectifier Selection Steps)

When working through rectifier selection steps, always evaluate these critical factors:

  • Voltage Rating (VR, VRRM): Select a diode rated at least 20–30% above the circuit’s peak operating voltage.
  • Current Rating (IF, IFSM): Ensure the device can handle both steady load current and surge currents during startup or transients.
  • Forward Voltage Drop (VF): Lower VF improves efficiency and reduces heat loss, especially in power supply designs.
  • Reverse Recovery Time (trr): Critical in high-speed switching applications such as SMPS or motor drives.
  • Package Type (SMA, SMC, DO-214, etc.): Choose based on board space, thermal dissipation, and assembly method.

3. Common Mistakes & How to Avoid Them

Even experienced engineers can misstep when selecting diodes:

  • Choosing voltage too close to operating margin
    → Always add safety headroom.
  • Ignoring surge current (IFSM)
    → Verify startup/inrush tolerance, not just average current.
  • Overlooking thermal considerations
    → Small SMD packages may fail under sustained load.
  • Confusing diode functions
    → A Schottky diode cannot replace a TVS in surge protection.

4. Application Examples

Practical use cases of how to choose diode effectively:

  • Power Supply Circuits – Schottky diodes improve efficiency and reduce power loss.
  • Lighting Systems – Fast recovery diodes provide stable performance in LED drivers.
  • Industrial Control – High-surge rectifiers enhance reliability in automation systems.
  • Circuit Protection – TVS diodes safeguard ICs from unexpected voltage spikes.

5. Simplifying the Selection Process

Pain Point: Engineers often face complex datasheets and ambiguous specs.
Highlight: A structured diode selection guide reduces guesswork and minimizes design errors.

Simple process flow:

  1. Define application requirements (voltage, current, switching speed).
  2. Identify the correct diode category (Schottky, Fast Recovery, TVS).
  3. Match package type and thermal performance.
  4. Validate surge and recovery specifications.

6. Extended Learning: Video Resource

▶ Watch this video for a visual introduction to diodes and rectifiers:

Diode & Rectifier selection guide video

The video not only explains diode categories but also takes you inside Kingtronics’ factory, showing how strict quality processes ensure product reliability and performance.

Conclusion & Next Steps

Selecting the right diode or rectifier doesn’t have to be overwhelming. By following these rectifier selection steps, you’ll simplify the process, reduce design risks, and ensure better performance for your circuit.

Whether you are designing a new power supply, upgrading industrial control systems, or protecting sensitive circuits, Kingtronics provides not only a comprehensive diode portfolio, but also engineering support to guide you through the selection process.

👉 Explore our full range of Diodes & Rectifiers
👉 Need help with your design? Contact our technical team

Diode & Rectifier selection guide illustration

Electronics Website Tools that cut your search steps in half. Compare specs, download datasheets, and send inquiries instantly — all in one place.

Quick Intro — See How It Works

Curious how many clicks you’ll save?

What happens if you only know a partial part number? Click to reveal

 

Can you compare series without opening dozens of tabs?

 

Feature 1 — Quick Search

Search by part number, series name, or keyword. The smart interface finds the right component in seconds on desktop or mobile.

  • Fewer clicks to the right product
  • Flexible matching for incomplete model numbers
  • Mobile-friendly for fast lookups

Feature 2 — Clear Categories & Navigation

Filter by voltage, package, capacitance and more — no more juggling tabs. It streamlines BOM verification and speeds shortlisting.

Feature 3 — One-Click Datasheets & Instant Inquiry

Each product page offers one-click datasheet downloads and a simplified inquiry form for quotes or technical questions.

  • Always-up-to-date specifications
  • Side-by-side series comparison
  • Direct support from the Kingtronics team

Real-world example: A power-electronics team used Quick Search and one-click downloads to finalize a BOM, cutting sourcing time by 40% before sending an inquiry the same day.

Replicate This Flow

Start in Just 3 Simple Steps

Stop switching between tabs. With Kingtronics Electronics Website Tools, you can search, compare, and inquire in one smooth flow.

Electronics Website Tools — 3 features that make your component search easier: faster sourcing, smarter tools

Kingtronics International Company — Inspired by Innovation

Watch our quick introduction video and discover the features engineers are already loving:

1. Smart Interface – Designed for Efficiency

Whether searching for capacitors, trimmer potentiometers, or passive components, the new Kingtronics website delivers a smoother experience from the very first click. With a cleaner layout and mobile-optimized design, engineers and buyers can easily navigate on any device.

Explore Now

2. Faster Product Search – All in One Place

Our new navigation structure is built for speed. With fewer clicks, clearer categories, and optimized performance, it’s now much easier to find datasheets, compare product series, and explore options.

From trimmer potentiometers to aluminum electrolytic capacitors, our platform makes technical decision-making faster and easier.

Try the New Search

3. Easy Access to Quotes and Technical Documentation

No more jumping between pages — every product page now offers direct access to downloadable datasheets and simplified inquiry forms. Whether you need a quote or technical support, help is just one click away.

Contact Us

Kingtronics International Company — Inspired by Innovation

When signal drift, component failure, or inconsistent load behavior interrupts your design, the root cause often lies in resistor performance.

Kingtronics KTR Series provides a practical solution for engineers and sourcing teams facing instability in high-density or high-reliability circuits—whether in consumer electronics or automotive control modules.

The Problem: Precision Matters More Than Ever

Modern electronics demand:

  • Stable signal filtering

  • High power handling in compact layouts

  • Resistance to heat, humidity, and overload

  • Long-term performance without component degradation

If your current resistor supplier falls short on any of these, it risks costly delays or product failures.

The Solution: KTR-RC, KTR-RP & KTR-RQ

KTR-RC solves the need for reliable, general-purpose resistors in consumer electronics, PCBs, and standard circuitry.

KTR-RP meets high power design requirements in constrained spaces, ideal for switching power supplies or lighting drivers.

KTR-RQ addresses automotive reliability challenges with AEC-Q200 qualification, sulfur resistance, and CCD visual inspection.

Across the board, the KTR series features:

  • Resistance from 1Ω to 22MΩ

  • Dielectric strength up to 500V

  • Stable performance under thermal and mechanical stress

  • Compatibility with standard reflow and wave soldering

For Engineers and Buyers Alike

If you’re evaluating vendors and not yet familiar with Kingtronics, this series offers a low-risk entry point:

  • Full documentation and spec sheets available

  • Stable lead times and consistent quality

  • Components trusted by global OEMs

More importantly, KTR helps you solve specific electrical design problems—not just fill a BOM.

Download Specs, Watch Demo

Whether you’re resolving noise in a PCB layout or sourcing automotive-grade resistors, the KTR Series gives you clear options.

Why Choose Kingtronics KTR Resistors for Precision Applications.

In today’s demanding electronic design landscape, where reliability, consistency, and space efficiency are critical, choosing the right capacitor can significantly impact performance and longevity. The Kingtronics® FKT Series Film Capacitors are engineered for stable operation across a range of high-performance applications, including EMI suppression, power filtering, and industrial electronics.

1. Multiple Series, One Unified Standard

The FKT series features a full spectrum of film capacitors designed for diverse circuit environments:

  • FKT-MB – Box type: Consistent dimensions for compact PCB designs
  • FKT-AD / FKT-AC – Axial types: Easy to integrate in lighting, audio, and power circuits
  • FKT-MQ – Subminiature design: Optimized for high-density layouts
  • FKT-MP – Designed for automatic insertion: Lightweight and assembly-friendly

2. Excellent Electrical Performance

  • Capacitance Range: 0.001μF to 47μF
  • Voltage Ratings: Up to 1250VDC
  • Dissipation Factor: As low as ≤0.0015 @ 1kHz
  • Tolerance Options: ±5%, ±10%, ±20%
  • Dielectric Strength: Withstands up to 1.7×UR

3. Built to Last in Harsh Conditions

All models in the FKT series are encapsulated with epoxy resin for superior resistance to:

  • High temperature
  • Humidity and moisture
  • Solvents and environmental contaminants

These properties make the FKT series ideal for industrial automationpower supply systems, and HVAC applications.

4. Applications Across Industries

Whether you're developing switch mode power supplies (SMPS)LED lighting circuitsaudio systems, or inverter modules, the FKT film capacitors offer the reliability and flexibility your projects demand.

  • Filtering and snubbing in power supplies
  • EMI suppression circuits
  • DC-link energy storage
  • Audio signal filtering

Explore FKT Series Film Capacitors

Looking for a specific voltage, form factor, or pitch size? Our product selector makes it easy to compare models and download datasheets.

View Full Product Series →

Visit our homepage: www.kingtronics.com
Contact us: info@kingtronics.com

Kingtronics FKT Series Film Capacitors – Full Range for EMI Suppression and Industrial Use

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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