TPMP1470GJ S42B Genuine 18V 2A SOT23-6 DC-DC Chip for Whatsminer Voltage Domain
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TPMP1470GJ S42B 18V 2A DC-DC Chip for Whatsminer Voltage Domain
The TPMP1470GJ (silk-marked S42B) is a 18 V / 2 A DC-DC chip in SOT23-6 package, used in the Whatsminer voltage domain for stable on-board power conversion. Compact footprint and tight regulation deliver the efficient power delivery the hashboard needs for sustained hashrate.
The chip's advanced topology supports stable voltage regulation under continuous-duty mining loads — replacing failed S42B parts restores the per-domain rail and gets the board back to nominal hashrate.
Typical Failure Modes Solved
- Domain power loss — failed S42B leaves the voltage rail at zero.
- Unstable hashrate — degraded regulation under load.
- Hashboard "missing chip" errors — chips downstream of S42B fail to enumerate.
- Production refurbishment — bulk inventory for Whatsminer rebuild lines.
TPMP1470GJ Specifications
| Feature | Description |
|---|---|
| Part Number | TPMP1470GJ |
| Silkscreen | S42B |
| Function | DC-DC voltage regulator |
| Input Voltage | Up to 18 V |
| Output Current | 2 A |
| Package | SOT23-6 |
| Compatibility | Whatsminer voltage domain |
| Condition | Brand New |
FAQ — TPMP1470GJ S42B
Q: How to diagnose a failed S42B?
A: Probe the output rail near the chip — if the rail is at 0 V or oscillating, the S42B is likely dead. Confirm input voltage is present before swapping.
Q: Substitute with another SOT23-6 DC-DC?
A: For OEM-spec Whatsminer repair, stick with TPMP1470GJ. Pin-compatible substitutes exist but require matching electrical envelope verification.
Q: Bulk pricing?
A: Yes — email contact@lys-sz.com.
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Whatsminer repair shops stocking TPMP1470GJ? Email contact@lys-sz.com for bulk pricing. Worldwide shipping from our Shenzhen warehouses.
Buying in bulk for a mining farm or repair shop?
Get dedicated B2B pricing on this part and across our full catalog — quote response within 24 hours, payment by T/T USD bank wire, and DDP delivery available for US & EU customers (and other lanes on request).
