STW48N60DM2 MOSFET TO-247 for Avalon PSU Repair
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STW48N60DM2 600V TO-247 N-Channel MOSFET | High-Efficiency Replacement for Avalon PSU & Whatsminer P21 PSU Repair
The STW48N60DM2 is a 600V N-channel power MOSFET in a TO-247 package for demanding power-conversion systems and PSU repair environments. Used in Avalon PSU units and Whatsminer P21 power supplies for reliable switching performance with low conduction losses across the primary stage.
Designed for high-efficiency converter stages, bridge topologies, and ZVS phase-shift applications. Fast-recovery body diode, low RDS(on), very low gate charge and input capacitance, high dv/dt ruggedness, Zener protection, and 100% avalanche tested for durability — exactly the characteristics needed for sustained 24/7 mining PSU duty.
When to Replace the STW48N60DM2
- PSU no output — primary-side switching MOSFET open or shorted.
- Blown mains fuse — shorted MOSFET took out the input fuse on power-up.
- Repeating over-current protection trip — degraded MOSFET causing controller to retry-and-fault.
- Visible cracking on the TO-247 body — overheat damage from cooling-fan failure or sustained over-temperature.
- Adjacent gate driver also failed — voltage spike from a shorting MOSFET often kills the driver in the same event.
STW48N60DM2 Specifications
| Parameter | Specification |
|---|---|
| Part Number | STW48N60DM2 |
| Package Type | TO-247 |
| Drain-Source Voltage (VDS) | 600V |
| Channel Type | N-Channel |
| Body Diode | Fast Recovery |
| Gate Charge | Very low |
| RDS(on) | Low |
| dv/dt Ruggedness | High |
| Protection | Zener-protected |
| Testing | 100% Avalanche tested |
| Applications | Bridge topologies, ZVS converters, PSU primary switching |
| Compatible PSU | Avalon power supplies, Whatsminer P21 |
FAQ — STW48N60DM2 MOSFET
Q: Replace in pairs on the Avalon / P21 PSU bridge stage?
A: Yes — when the PSU uses a bridge or half-bridge topology, replace in matched pairs to keep switching characteristics balanced. A single new MOSFET paired with an aged partner mismatches Qg and RDS(on), stressing both devices unevenly.
Q: Always check the gate driver IC when this MOSFET dies?
A: Strongly recommended. Voltage spikes from a shorting MOSFET often take out the driver in the same event. Skipping the driver replacement is a common cause of repeat failure within hours.
Q: TO-247 mounting torque?
A: Use the heat-sink manufacturer's torque spec. Overtightening cracks the package, undertightening lets junction temps climb. Re-paste the isolated mounting pad carefully before each install.
Q: Bulk pricing for Avalon / Whatsminer P21 PSU repair benches?
A: Yes — email contact@lys-sz.com for volume pricing and matched gate-driver kits.
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Avalon / Whatsminer P21 PSU repair benches stocking STW48N60DM2 in tape-and-reel volume? Email contact@lys-sz.com for bulk pricing. Worldwide shipping from our Shenzhen warehouse.
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