TPHR9003NL Transistor MOSFET N-CH Si 30V SOP for Antminer Hashboard

TPHR9003NL N-Channel MOSFET | 30V / 220A Ultra-Low-Rds(on) Power Transistor for Antminer Hashboard Voltage Regulation Repair

The TPHR9003NL is a high-performance N-channel MOSFET designed for Antminer hashboard voltage regulation. Sits at the heart of the hashboard's local power stage, regulating the rail that feeds the ASIC chain. When this device fails, the hashboard either reports as missing in the dashboard, shows abnormal behaviour during testing, or runs with degraded performance — replacing the faulty MOSFET is a key step in restoring full hashboard functionality.

Built using U-MOS VIII-H process technology for ultra-low Rds(on) (0.9mΩ at Vgs = 10V) — minimal conduction loss even at the 220A continuous current rating, which keeps the hashboard cooler and more efficient under sustained mining duty. Fast switching with low rise and fall times maintains efficiency at the high switching frequencies modern hashboards use. 30V drain-source voltage matches the typical hashboard rail envelope; compact SOP-8 surface-mount package matches the standard pad layout on Antminer hashboard production.

When to Replace the TPHR9003NL

• Hashboard reports as missing in the miner dashboard — power stage MOSFET failed, board not receiving its regulated rail.
• Abnormal behaviour during hashboard test — partial chip-chain failure, marginal rail voltage from a degrading MOSFET.
• Excessive heating at the MOSFET location — degraded Rds(on), conduction loss rising above safe envelope.
• Visible burn or thermal damage on the SOP-8 package — direct replacement, swap parallel parts on the same phase if any.
• Post-chip-replacement reassembly — refresh the power stage MOSFETs alongside the chip work to prevent recurring failures.

TPHR9003NL MOSFET Specifications

FAQ — TPHR9003NL MOSFET

Q: Why is the 0.9mΩ Rds(on) significant?
A: At 220A continuous, each milliohm of Rds(on) dissipates ~48W per part (I²R = 220² × 1mΩ). The 0.9mΩ rating means only ~44W per part vs ~100W+ for a 2mΩ alternative. Lower heat = longer service life and higher hashboard efficiency.

Q: How do I diagnose a failed TPHR9003NL in-circuit?
A: Diode-test drain-source with the gate grounded — a healthy N-channel reads infinite. 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 best long-term reliability replace all paralleled MOSFETs on the affected phase — the surviving parts have absorbed thermal stress from the failure event and have shortened service life.

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

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Repair shops stocking TPHR9003NL MOSFETs by the reel? Email contact@lys-sz.com for bulk pricing. Worldwide shipping from our Shenzhen warehouse.