NTMFS5C604NLT1G 5C604L MOS Chip for Antminer S19 Hydro HHB28601 Hashboard

NTMFS5C604NLT1G 5C604L N-Channel MOSFET | 60V / 287A Ultra-Low-Rds(on) Power Transistor in DFN-5 Package for Antminer S19 Hydro HHB28601 Hashboard Repair

The NTMFS5C604NLT1G (silkscreen marking 5C604L) is the N-channel power MOSFET used on the Antminer S19 Hydro HHB28601 hashboard for ASIC core voltage switching. Drop-in replacement when the original MOSFET fails: restores the core voltage rail and clears the chain-scan failures, hashboard recognition errors, and dead-rail symptoms that come from a degraded power-stage MOSFET on a S19 Hydro board.

Rated for 60V drain-source breakdown voltage (Vds) and 287A continuous drain current. The 1.2mΩ on-resistance (Rds(on)) minimises conduction loss at the high currents typical of S19 Hydro hashboard core duty — important because hydro miners run sustained loads that punish marginal MOSFETs. Compact DFN-5 surface-mount package matches the OEM pad layout on the HHB28601 hashboard production line.

When to Replace the NTMFS5C604NL

• Hashboard reports as missing in the miner dashboard — power stage MOSFET failed, board not receiving its regulated core rail.
• Chain scan failure on a S19 Hydro hashboard — degraded MOSFET delivering marginal rail voltage to the BM1398BB ASIC chain.
• Excessive heating at the MOSFET location — degraded Rds(on), conduction loss rising above the safe envelope.
• Visible burn or thermal damage on the DFN-5 package — direct replacement, swap any paralleled MOSFETs on the same phase.
• Post-cascade-failure rework — S19 Hydro hashboards exhibit a known cascade failure pattern where overheating triggers MOSFET damage; replace alongside the upstream U4/U5 supervisor pair.

NTMFS5C604NLT1G Specifications

FAQ — NTMFS5C604NL MOSFET

Q: Why does the 1.2mΩ Rds(on) matter on S19 Hydro?
A: S19 Hydro hashboards run sustained core current (typical 200-280A per phase). At 287A, each milliohm of Rds(on) dissipates ~82W per part (I²R). The 1.2mΩ rating gives ~99W per part vs ~165W+ for a 2mΩ alternative. Lower heat = longer service life + better hashboard efficiency.

Q: How do I diagnose a failed NTMFS5C604NL in-circuit?
A: Diode-test drain-source with the gate grounded — a healthy N-channel reads infinite drain-source resistance. Short across drain-source confirms a dead part. Visual inspection catches the obvious burn cases. For deeper analysis, lift one pin and measure Rds(on) on a current-limited bench supply.

Q: Should I replace all paralleled MOSFETs on the same phase?
A: For S19 Hydro hashboards, yes — paralleled MOSFETs share current. If one failed, the survivors absorbed thermal stress and have shortened service life. Replace as a phase group for production-grade reliability.

Q: Bulk pricing for repair shops?
A: Yes — email contact@lys-sz.com with your monthly volume. Reel and tape quantities are stocked.

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Repair shops stocking NTMFS5C604NL MOSFETs by the reel? Email contact@lys-sz.com for bulk pricing. Worldwide shipping from our Shenzhen warehouse.