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When designing EMI filters or power supplies, choosing the right X2 film capacitor directly affects safety and long-term reliability. Certified X2 devices prevent insulation breakdown, reduce electromagnetic interference, and help meet global compliance.
Why Certification Matters
A qualified X2 capacitor must endure repetitive AC stress and transients. Kingtronics FKT-MX, rated at 310 VAC, carries VDE, ENEC, and UL approvals in accordance with IEC 60384-14. It is designed for across-the-line EMI suppression in power supplies, LED drivers, and industrial control systems where high stability and low loss are essential.
Key Specs (Design Reference)
- Rated voltage
- 310 VAC
- Capacitance range
- 0.0047 µF – 10 µF
- Operating temperature
- −40 °C ~ +110 °C
- Dissipation factor
- ≤ 0.3 % (capacity-dependent)
- Safety approvals
- VDE / ENEC / UL
Use certified X2 components only in AC line positions. Verify lead pitch, body size, creepage, and clearance for your PCB.
Key Search Terms
Common Challenges in EMI Filter Design
- Excessive noise or leakage due to low-grade dielectric materials.
- Compliance failures when uncertified components are used.
- Capacitance drift and heating in polyester-based X2 parts.
- Uncertain availability or long lead times from legacy brands.
How FKT-MX helps
- Polypropylene dielectric for superior temperature and voltage stability (−40 °C ~ +110 °C).
- Low dissipation factor ≤ 0.3%.
- Wide capacitance range 0.0047 µF – 10 µF for flexible design.
- Predictable lead time with stable production capacity.
Comparison with Global Alternatives
| Kingtronics Model | Kemet | EPCOS | Pilkor | Evox Rifa | Vishay | Wima | Iskra | Panasonic |
|---|---|---|---|---|---|---|---|---|
| FKT-MX (310 VAC) | R46 | B81130 / B32921–B32924 | PCX2 337 / PCX2 339 | PHE 840M / PHE 840E | MKP 3382 / MKP 3392 | MP3 X2 / MKP X2 | KNB 153X / KNB 156X | ECQU |
FKT-MX offers equivalent safety approvals with cost-effective structure and dependable delivery. It serves as a practical replacement for well-known X2 families in EMI suppression applications.
Watch the Product in Action
Learn More
See full specifications, datasheet, and available sizes on the official website:
FAQ
What is an X2 film capacitor?
It is a safety-rated capacitor intended for across-the-line connection on AC mains to suppress EMI.
What certifications does FKT-MX have?
VDE, ENEC, and UL approvals according to IEC 60384-14.
What operating range should I consider?
310 VAC rating, 0.0047 µF – 10 µF capacitance, and −40 °C to +110 °C operating temperature.
Is it a suitable alternative to EPCOS/Kemet X2 parts?
Yes. FKT-MX is a practical replacement in EMI suppression filters, with cross-references listed above.
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