Understanding X1 Class Film Capacitors: Why jb’s JFT Series Is a Reliable EMI Filter Choice
In AC applications where EMI suppression, safety compliance, and compact design are essential, choosing the right Class X1 film capacitor is critical to ensure product stability and regulatory compatibility. The jb JFT series is purpose-built for these demands—delivering consistent electrical performance, compact dimensions, and complete X1-class certification.
What is a Class X1 Capacitor?
X1 capacitors are safety-certified components designed for use across the line (L-N) to suppress differential-mode interference in AC circuits. As defined in IEC 60384-14:
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They withstand impulses up to 4kV, making them suitable for industrial or commercial-grade environments.
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Built with fail-safe, self-healing construction, they maintain stability under harsh electrical stress.
If your application involves switching power supplies, motor drives, HVAC controls, or AC line filtering, an X1-rated capacitor like the JFT is not optional—it’s essential.
Key Features of jb JFT X1 Film Capacitors
| Specification | Details |
|---|---|
| Capacitor Class | X1 (Interference Suppression) |
| Rated Voltage | 300VAC / 440VAC |
| Capacitance Range | 0.0022μF to 4.7μF |
| Capacitance Tolerance | ±10% |
| Operating Temperature | -55°C to +105°C |
| Dissipation Factor (1kHz) | Max. 0.001 |
| Insulation Resistance | ≥15,000 MΩ (C ≤ 0.33μF) |
| Package Size | As small as 13 × 11 × 5 mm |
Typical Applications
The JFT X1 series is ideal for:
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AC input EMI filters
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Switched-mode power supplies (SMPS)
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LED driver circuits
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HVAC control systems
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Industrial automation devices
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Smart sockets, adapters, and AC-powered appliances
These capacitors are engineered for long-term stability under fluctuating AC voltage, making them ideal for mission-critical applications.
Why Engineers Prefer the JFT Series
| Feature | JFT X1 Capacitor | Standard Ceramic Capacitor |
|---|---|---|
| EMI Suppression | Excellent | Moderate |
| Safety Certification (X1) | Yes | No |
| Surge Voltage Handling | Up to 4kV | Limited |
| Fail-Safe Mechanism | Self-healing | Short-circuit risk |
| Long-Term Reliability | High | Medium |
With excellent electrical properties, compact design, and international compliance, the JFT series is a preferred choice for engineers building high-performance, safety-compliant AC products.
Contact Us
Email: info@jbcapacitors.com
Website: www.jbcapacitors.com
