TMP451AIDQFR Temperature Sensor IC (T451) for Antminer Hashboard Repair

TMP451AIDQFR T451 Digital Temperature Sensor – Antminer Hashboard

The TMP451AIDQFR (silk-marked T451) is a high-precision digital temperature sensor IC widely used on Antminer hashboards for accurate thermal monitoring and protection. 12-bit resolution with ±1 °C accuracy ensures reliable temperature control — critical input for the throttling and shutdown logic that protects the ASIC chain from thermal damage.

Communication via standard I²C / SMBus interface integrates seamlessly into the hashboard control system. Wide supply voltage range 1.7 V – 3.6 V supports multiple logic levels (1.8 V / 2.5 V / 3.3 V) — flexible across the various Antminer housekeeping rail architectures.

Typical Failure Modes Solved

• Bogus temperature readings — miner logs 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 rework lines.

TMP451AIDQFR Specifications

FAQ — TMP451AIDQFR Sensor

Q: TMP451 vs TMP75 — interchangeable?
A: Same I²C interface family. TMP451 adds a remote-diode sensor channel (measures ASIC die temperature directly). For OEM-spec Antminer repair, match the silk marking.

Q: Remote-diode wiring on Antminer hashboards?
A: TMP451's remote-diode pair connects to the ASIC chip's thermal-diode pad. Verify the trace integrity before swapping — broken remote-diode lines cause false-high readings.

Q: Bulk pricing?
A: Yes — email contact@lys-sz.com.

Related products

• LM75A Digital Temp Sensor – Antminer / Whatsminer
• TMP75AIDR Digital Temp Sensor – Antminer / Iceriver
• TMP102 CBZ 12-bit Temp Sensor – Goldshell KD6
• NCT218 Temp Sensor – Antminer S17 / L7

Antminer repair shops stocking TMP451AIDQFR? Email contact@lys-sz.com for bulk pricing. Worldwide shipping from our Shenzhen warehouses.