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JFQQ – DC-Link Aluminum Case Dry-Type DC Support Capacitors
The JFQQ Series by jb Capacitors is a high-reliability DC-Link and IGBT Snubber Capacitor for industrial inverters, power converters, and renewable energy systems.
Built with metallized polypropylene film and non-inductive winding, it ensures low ESR, low ESL, and excellent high-frequency stability under high voltage stress.
The aluminum case with resin sealing provides flame-retardant protection (UL94V-0) and reliable heat dissipation for long-term use.
Rated 500–1200VDC (customizable up to 4000VDC) and 24–5600μF, the JFQQ offers high ripple current capability and 100,000-hour lifetime—ideal for wind and solar inverters, EV/HEV drives, and motor control systems.
Description
Specifications
Specifications
| Item | Characteristics |
|---|---|
| Reference Standards | GB/T 17702, IEC 61071 |
| Capacitance Range | 24µF – 5600µF |
| Rated Voltage | 500V.DC – 1200V.DC (customized version up to 4000V.DC available) |
| Capacitance Tolerance | ±5%, ±10% |
| Dissipation Factor (tan δ) | ≤ 20 × 10⁻⁴ (at 25°C ±5°C, 100 Hz) |
| Insulation Resistance | C·R ≥ 5000 s (at 100 V.DC, 25°C ±5°C, 60 s) |
| Operating Temperature Range | −40°C ～ +85°C |
| Test Voltage (between terminals) | 1.5 × Un (10 s, 25°C ±5°C) |
| Test Voltage (between terminals & case) | Un < 1500 V.DC → 3000 V.AC (10 s, 50/60 Hz, 25°C ±5°C) Un ≥ 1500 V.DC → (2 × Un + 1000) V.AC (10 s, 50/60 Hz, 25°C ±5°C) |
| Over-Voltage Capability | 1.1 Un for 30% of service time 1.15 Un for 30 min/day 1.2 Un for 5 min/day 1.3 Un for 1 min/day 1.5 Un for 100 ms (no more than 1000 times) |
| Maximum Altitude | 2000 m |
| Expected Lifetime | 100,000 hours @ Un, θhs = 70°C |
| Failure Rate | 100 FIT |