Kingtronics International Company — Inspired by Innovation

In the electronics industry, reliability is often discussed in terms of specifications, certifications, and supply chain performance. But behind every stable delivery schedule and consistent product quality, there is a less visible foundation: people.
At Kingtronics, long-term reliability does not begin on the production line. It begins with how teams communicate, collaborate, and support one another in everyday work.
While technical expertise is essential, smooth collaboration across departments plays an equally important role. Regular internal gatherings and team activities give engineers, logistics specialists, quality teams, and sales colleagues the opportunity to exchange perspectives beyond formal meetings.
These moments help break down silos and create shared understanding, which ultimately translates into faster coordination, clearer communication, and fewer disruptions for customers.

Corporate responsibility is often associated with large initiatives and formal policies. At Kingtronics, it also takes shape through simple, human actions.
Participation in community initiatives, such as blood donation activities, reflects a mindset of shared responsibility. These activities remind teams that the work they do every day is connected to a broader social environment.

Celebrating milestones together, whether seasonal events or team achievements, contributes to a sense of continuity and trust within the organization. This stability matters.
For customers and partners, it means working with teams that stay consistent over time, understand long-term requirements, and approach collaboration with responsibility rather than short-term thinking.

Behind-the-scenes culture may not appear on datasheets or certificates, but its impact is tangible. A team that communicates openly and feels accountable to one another is better equipped to handle challenges, adapt to changes, and maintain reliable operations.
At Kingtronics, we believe that reliability is not only engineered. It is cultivated, day by day, through people, culture, and shared values.

As the electronics industry continues to evolve, technical excellence will always be essential. But sustainable partnerships are built on more than components alone.
They are built on people.
To learn more about Kingtronics’ long-term commitments and responsible practices, please visit our official ESG overview page .
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Kingtronics International Company — Inspired by Innovation
Axial Film Capacitors remain a preferred solution for engineers who require stable performance, long operating life, and dependable characteristics across consumer, industrial, and power-related applications. Kingtronics FKT-AA, FKT-AB, FKT-AC, and FKT-AD series represent a complete axial lead film capacitor lineup optimized for filtering, coupling, pulse circuits, and precision signal conditioning. Built with high-grade dielectric materials and metallized film design, these capacitors offer excellent electrical stability and robust mechanical endurance for both modern and legacy circuit architectures.
Select a voltage rating that accounts for steady-state voltage, surge tolerance, and AC ripple. Polypropylene (PP): higher dielectric strength → ideal for pulse and switching circuits. Polyester (PET): cost-efficient for coupling, timing, and general filtering.
Evaluate tolerance, temperature drift, and frequency behavior. Axial film capacitors maintain consistent capacitance thanks to uniform dielectric layering — ideal for audio crossovers, signal conditioning, and precision analog designs.
| Feature / Property | Axial Film Capacitors | Metallized Polyester (PET) | Metallized Polypropylene (PP) |
|---|---|---|---|
| Dielectric Loss | Low | Medium | Very Low |
| Temperature Stability | Good | Moderate | Excellent |
| Pulse Handling | Good | Limited | Very Strong |
| Typical Applications | Filtering, coupling, signal control | Consumer electronics, DC blocking | High voltage, snubber, precision circuits |
| Cost | Moderate | Low | Moderate–High |
This comparison highlights why polypropylene axial capacitors are preferred for high-voltage, high-stress circuits, while polyester types provide economical benefits for consumer-grade electronics.
Looking for stable, low-loss axial film capacitors for power supplies, lighting, industrial control or signal circuits? Browse our FKT-AA ~ FKT-AD series below or contact our engineering/sales team for detailed specs & quotations.
The Kingtronics FKT-AA~FKT-AD Axial Film Capacitor series delivers a balanced combination of low ESR, stable capacitance, strong pulse endurance, and mechanical durability. The axial lead structure ensures predictable impedance characteristics, supporting both modern compact designs and long-life industrial systems. For engineers requiring reliability under thermal cycling, vibration, and dynamic load stress, the FKT axial series provides an excellent solution.
Use this video together with the portfolio overview above to map theoretical concepts directly to Kingtronics FKT-AA~FKT-AD Axial Film Capacitor series part numbers from Kingtronics.
Ideal for AC/DC filters, input EMI suppression, smoothing circuits, telecom power modules, and compact PSU designs.
FKT-AC and FKT-AD offer strong pulse endurance, self-healing behavior, and high dV/dt capability — ideal for snubber networks, motor drives, ignition circuits, and industrial switching systems.
Excellent compensation, thermal stability, and long service life reduce flicker and drift in CFL and LED power stages.
Low dielectric absorption ensures clean signal transmission with minimal distortion, ideal for crossover networks and precision analog circuitry.
Resin-sealed axial structure withstands vibration, making the series suitable for HVAC controllers, automation modules, ignition timing and rugged industrial equipment.
Kingtronics FKT-AA~FKT-AD Axial Film Capacitors suit diverse circuit environments where stability, long service life, and mechanical robustness are essential. Their metallized film construction with axial lead geometry delivers predictable electrical behavior across both low- and high-frequency sections.
Kingtronics International Company — Inspired by Innovation
When power systems and industrial equipment face sudden voltage spikes, the entire circuit can be put at risk. That’s why TVS (Transient Voltage Suppressor) diodes play such a critical role — they clamp dangerous surges within nanoseconds, protecting sensitive ICs, MOSFETs and controllers.
This article is written for design and maintenance engineers who work with power supplies, industrial equipment, automation and high-reliability systems. It explains why TVS diodes have become a standard protection element and how Kingtronics TVS series can help you build stable, cost-effective designs.
Power supply stages sit at the front line of the system. They see switching noise from converters, disturbances from the AC line and, in some regions, lightning-related surges. Without proper surge protection, these events can damage rectifiers, controllers or downstream loads.
A correctly selected TVS diode clamps the surge to a defined level, absorbs the pulse energy and allows the supply to recover, instead of letting the transient propagate into the rest of the circuit.
Based on industry applications and Kingtronics internal data, TVS diodes are commonly used in power-related designs such as:
• AC/DC converters and power adapters
• General switching power supplies for industrial and IT equipment
• High-power SMPS in servers, automation and charging systems
• SMPS output regulation lines (3.3V / 5V / 12V) for logic and control rails
• Lightning suppression boards and surge protection modules
• Dedicated transient suppression circuits at supply input or critical nodes
• SMBJ Series – Compact SMD protection for SMPS output and converter boards where PCB area is limited
• SMCJ Series – Higher surge capability SMC package for high-power PSUs and industrial converters
• P6KE Series – Versatile axial solution for switching power supply and general transient protection
• 1.5KE Series – High-surge axial TVS for heavy-duty SMPS and robust industrial power units
• 5KP Series – Designed for lightning and high-energy suppression in harsh line and surge environments
For full technical data and the complete list of available TVS ratings, browse the Kingtronics TVS diode selection page and explore detailed surge protection options.
Explore Kingtronics TVS Diode Series →
To request quotations, cross-reference support or discuss design-in requirements with our engineers:
Industrial and transportation electronics often operate in electrically harsh environments. Motors, long cable runs, inductive loads and external interfaces can all inject noise and surges into control and monitoring circuitry.
According to Kingtronics application data, TVS diodes are widely used to protect critical industrial and safety-related systems, including:
• Aircraft engine controllers and onboard electronics
• Elevator control systems and building automation panels
• Fire alarm systems and emergency signaling devices
• Gas detectors and safety monitoring equipment
• Industrial control boards for machinery and process control
• Voltage regulator modules and power distribution boards
• Power MOSFET protection in switching and motor control stages
• Black box recorders and data logging systems
• Image inspection and vision systems in production lines
In these high-reliability scenarios, both surge energy and response time matter. Kingtronics offers options across SMAJ / SMBJ / SMCJ / 1.5KE / P6KE / P4KE / SA Series, so designers can choose the package, power rating and voltage range that match their environment and qualification level.
When you move from concept to implementation, it helps to compare package, surge rating and use cases at a glance. The table below summarizes key Kingtronics TVS families and links directly to product pages or datasheets for further design work.
| Series | Package | Peak Pulse Power | Typical Applications | Product / Datasheet |
|---|---|---|---|---|
| SMAJ | SMA | 400 W | Compact SMPS, telecom, adapter boards | View SMAJ product page |
| SMBJ | SMB | 600 W | SMPS output lines, industrial control | Explore SMBJ product page |
| SMCJ | SMC | 1500 W | High-power PSU, automation systems | Discover SMCJ product page |
| P4KE | Axial | 400 W | General purpose transient suppression | Download P4KE datasheet |
| P6KE | Axial | 600 W | Switching PSU protection, industrial boards | Download P6KE datasheet |
| 1.5KE | Axial | 1500 W | Heavy-duty SMPS, industrial PSU | Download 1.5KE datasheet |
| SA5.0A | Axial | 500 W | Low-voltage lines, signal protection | Download SA5.0A datasheet |
For cross-reference or engineering support, or if you are qualifying multiple protection levels across different lines, our team can help you match the proper TVS series to your operating environment and surge profile.
For engineers who prefer visual explanations, the following reference video gives a clear overview of TVS operation and surge behavior:
TVS Diode Basics & Surge Protection Explained
This video pairs well with this article — readers can quickly connect theory, waveforms and real-world protection circuits.
Power supplies and industrial equipment require reliable surge protection. TVS diodes remain one of the simplest and most effective ways to improve system robustness and extend field lifetime.
With a full range covering SMAJ to 5KP high-energy series, Kingtronics provides robust and cost-optimized TVS solutions for OEMs, EMS and industrial manufacturers. Whether you are designing a new platform or updating an existing board, selecting the right TVS diode can significantly reduce field failures and service costs.
If you need help selecting the right TVS diode for your design, our team is ready to assist.
Tel: (86) 769 8118 8110
Tel: (852) 8106 7033
Fax: (852) 8106 7099
E-mail: info@kingtronics.com
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Web: www.Kingtronics.com
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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