LM75A Temperature Sensor for Antminer & Whatsminer Hashboard
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LM75A Digital Temperature Sensor for Antminer + Whatsminer Hashboards
The LM75A is a high-precision digital temperature sensor IC designed for Antminer S19, S19 Pro+ Hydro, L9 and Whatsminer hashboards. The reliable I²C 2-wire interface delivers 9-bit digital temperature readings — vital input for the miner's thermal management loop and hashboard throttling logic.
Wide operating range from -55 °C to +125 °C covers the full mining thermal envelope. Up to 8 devices on a single 2-wire bus via I²C address selection — scalable for multi-hashboard chassis with distributed temperature monitoring.
Typical Failure Modes Solved
- Bogus temperature readings — miner logs report 0 °C or 125 °C constantly.
- Thermal-throttle stuck on — control board derates hashboard incorrectly.
- Sensor not ACK on I²C bus — chip dead after a thermal event.
- Production refurbishment — bulk sensor stock for hashboard rework lines.
LM75A Specifications
| Feature | Specification |
|---|---|
| Sensor Type | Digital temperature sensor (LM75A) |
| Resolution | 9-bit |
| Communication Interface | I²C (2-wire) |
| Operating Range | -55 °C to +125 °C |
| Devices per Bus | Up to 8 (I²C address selectable) |
| Compatible Miners | Antminer S19, S19 Pro+ Hydro, L9, Whatsminer hashboards |
| Condition | Brand New |
FAQ — LM75A Temperature Sensor
Q: LM75 vs LM75A — interchangeable?
A: Functionally similar; LM75A has tighter accuracy + wider supply range. For OEM-spec repair, match the silk marking exactly.
Q: 9-bit resolution enough for hashboard?
A: 9-bit gives 0.5 °C resolution — plenty for thermal-throttle decisions. Higher-resolution sensors (12-bit TMP102 etc.) exist when finer measurement is needed.
Q: Bulk pricing?
A: Yes — email contact@lys-sz.com.
Related products
- TMP102 CBZ 12-bit Temp Sensor – Goldshell KD6
- SGM452TS8 Digital Temp Sensor – Hashboard
- NCT218 Temperature Sensor – Antminer S17 / L7
- Antminer S19 / S21 Temperature IC Replacement Module
Antminer / Whatsminer repair shops stocking LM75A? 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).
