EPCOS / TDK J404 Inrush Current Limiter
TDK J404 Inrush Current Limiter is designed for DC voltages of up to 500V and AC voltages of up to 350V. This current limiter self-protects in case of an internal short circuit of the capacitor or malfunction of the short-circuit relay. The J404 current limiter can switch off a defect (short circuit) up to 100 times and up to 100,000 cycles when charging and discharging capacitors. This current limiter features 500Ω rated resistance, 500VDC maximum link voltage, 1J/K typical heat capacity, and ±30% resistance tolerance. The J404 current limiter operates from -40°C to +125°C temperature range and at 350VAC maximum voltage.
The J404 current limiter complies with RoHS and JEDEC J-STD-020D standards. This current limiter is used to replace high-power fixed resistors for capacitor charging and discharging.
Features
- Self-protecting in case of malfunction of short-circuit relay or internal short circuit of capacitor
- Encased with clamp contacts for high reliability
- Designed for high pulse currents and a high number of operating cycles
- Inrush current limiters are not damaged when directly connected to Vmax even without additional current limitation
- Reflow solderable according to JEDEC J-STD-020D
- Flame-retardant plastic case, case material UL-listed
- Surface mountable (reflow solderable)
- Sn-plated lead-free solder pads
- RoHS compatible
- AEC-Q200 qualified
Specifications
- 500Ω rated resistance
- 500VDC maximum link voltage
- 1J/K typical heat capacity
- ±30% resistance tolerance
- -40°C to 125°C operating temperature range
- 350VAC operating maximum voltage
- 100s typical thermal time constant
Applications
- Inrush current limiter (charging and discharging resistor) for smoothing and DC link capacitors
- Replace high-power fixed resistors for capacitor charging and discharging
- Discharge resistor for DC link capacitors
- Variable speed drives
- Traction inverters for xEV
Additional Resource
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Published: 2023-10-30
| Updated: 2024-10-30