IPW65R041CFD 650V TO-247 MOSFET for ASIC Miner PSU Repair
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IPW65R041CFD 650V Super-Junction MOSFET | TO-247 Power Transistor for ASIC PSU Repair
The IPW65R041CFD is a 650V N-Channel super-junction (SJ) power MOSFET in the TO-247 through-hole package — the primary-side switching transistor on many ASIC miner PSU designs. The "CFD" suffix indicates the fast-body-diode variant, optimized for resonant / phase-shifted switching topologies where the body diode participates in the conduction cycle.
Headline specs: VDS 650V, ID 68.5A continuous, RDS(on) typical 41mΩ, ultra-fast body diode, low FOM (RDS(on) × Qg) and Eoss. Combined: high commutation robustness, low switching losses, durable under sustained mining-PSU duty.
When to Replace the IPW65R041CFD
- PSU fails to start — no DC output, primary switching dead.
- Hiccup mode — PSU pulses on/off without latching.
- Visible damage — burnt or cracked TO-247 package on the primary heatsink.
- Multimeter shows shorted drain-source across the MOSFET.
IPW65R041CFD Specifications
| Parameter | Specification |
|---|---|
| Type | N-Channel Super-Junction (SJ) Power MOSFET |
| Variant | CFD — fast body diode |
| VDS (Drain-Source Voltage) | 650V |
| ID (Continuous Drain Current) | 68.5A |
| RDS(on) | ~41mΩ typical |
| Body Diode | Ultra-fast (CFD variant) |
| Switching Losses | Low — resonant-switching optimized |
| FOM (RDS(on) × Qg) | Low |
| Package | TO-247 (through-hole) |
| Application | ASIC PSU primary switching, resonant converters |
FAQ — IPW65R041CFD MOSFET
Q: CFD vs non-CFD variants — what's the difference?
A: "CFD" = Cool Fast Diode. The CFD variant has an integrated ultra-fast body diode optimized for resonant / soft-switching topologies. Non-CFD variants have a slower body diode and are intended for hard-switching applications. Match the original part suffix exactly.
Q: Can I substitute another 650V/68A super-junction MOSFET?
A: Verify three things: (1) RDS(on) rating matches; (2) gate charge (Qg) similar to avoid retuning the gate drive; (3) body-diode recovery time matches if the PSU topology uses resonant switching. Mismatched parts can pass current but increase switching loss and trip thermal protection.
Q: Rework profile?
A: Through-hole TO-247 — desolder 3 leads with vacuum pump, lift the part, install fresh device with correct pin orientation (gate / drain / source per silk), apply fresh thermal compound, torque to heatsink.
Q: Bulk pricing?
A: Yes — email contact@lys-sz.com for tray-quantity pricing.
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PSU repair benches stocking IPW65R041CFD MOSFETs in volume? Email contact@lys-sz.com for bulk pricing. Worldwide shipping from our Shenzhen warehouse.
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