TMP75

Description

TMP75 (TMP75AIDR) Temperature Sensor Chip for ASIC Miner Hashboards

This Tmp75 temperature sensor asic miner hashboard is a direct replacement part for your ASIC miner.

The TMP75 is a digital temperature sensor IC widely used on ASIC miner hashboards for accurate, real-time thermal monitoring. Manufactured in an SOP-8 package with the marking TMP75AIDR, this chip communicates temperature data to the miner control board via SMBus/I2C interface, enabling automated fan speed control and thermal protection. A failed TMP75 can cause your miner to report temperature errors, throttle performance, or shut down hashboards entirely.

Key Specifications

• Part Number: TMP75AIDR (marking: TMP75)
• Package: SOP-8 (SOIC-8)
• Interface: SMBus / I2C compatible
• Supply Voltage: 2.7V to 5.5V
• Temperature Range: -40 C to +125 C
• Resolution: 9 to 12 bits (configurable)
• Accuracy: +/- 1 C typical over operating range

Compatible Mining Hardware

The TMP75 temperature sensor is used across a wide range of ASIC miners, including:

• Bitmain Antminer: S9, S9se, T9+, S11, S15, S17, S19, S19j Pro, S19+, S19 Pro, S21, S21 Hydro, T17+, D7, L7, K7, KA3, KS3
• Iceriver: KS3L, KS3M, KS5L
• MicroBT Whatsminer: Select models

Important: Different production batches of the same miner model may use different temperature sensor types (TMP75, T451, NCT218, S75, or LM75A). Always verify the marking on your existing sensor chip before ordering a replacement.

When You Need This Part

The TMP75 is a critical safety component. When it fails, the hashboard cannot report its operating temperature to the control board. The miner may respond by:

• Displaying temperature values of 0 C or erratic readings in the dashboard
• Shutting down the affected hashboard as a thermal safety precaution
• Failing to regulate fan speeds properly, potentially overheating other components
• Throwing temperature sensor error codes during diagnostics

Replacement Procedure

Replacing the TMP75 requires surface-mount rework skills:

1. Apply no-clean flux around the pins of the failed chip
2. Heat with a hot air rework station at approximately 400 C with medium airflow, positioned about 5 cm above the chip
3. When solder melts, gently lift the chip with fine-tip tweezers
4. Clean the pads, align the new TMP75, apply flux, and reflow with hot air

This is one of the most common ASIC repair components. Keeping a supply on hand significantly reduces hashboard repair turnaround time.