Is there a pin-compatible replacement for TMP102AIDRLR?

The TMP112 series is cited by Texas Instruments as a pin-compatible upgrade to the TMP102. The UMW TMP112AIDRLR shares the same package and pin count, making it a strong candidate, but you must verify the pinout from the datasheet before design-in.

What risks should I check before replacing TMP102AIDRLR?

Before replacing TMP102AIDRLR, you should verify three main things: 1) Confirm the pinout of the replacement matches exactly. 2) Check the I2C device address to ensure it's compatible with your system's configuration. 3) Perform functional testing in your application.

TMP102AIDRLR Alternatives, Datasheet & Cross Reference | Texas Instruments

The TMP102AIDRLR is a popular low-power digital temperature sensor from Texas Instruments. Strong alternatives exist, such as the UMW TMP112 series, which offers an upgrade path with wider operating ranges in the same SOT-563 package.

AI replacement insight

Electrical risklow

Candidate electrical specs meet or exceed the target.

Package riskmedium

Package matches, but pinout requires verification to confirm it's a true drop-in.

Firmware risklow

I2C interface is the same, but address should be confirmed. No other firmware changes expected.

Can it be replaced directly?

A direct drop-in replacement is not guaranteed without verification. However, the UMW TMP112 series is a strong candidate for pin-to-pin compatibility.

Best replacement path

The UMW TMP112AIDRLR is the most promising alternative, cited as an upgrade path with superior voltage and temperature specifications.

Main risk

The primary risk is ensuring the pinout and I2C address of the UMW TMP112 parts are identical to the TI TMP102. This must be verified from the datasheet.

Recommended alternatives

A potential upgrade with wider voltage and temperature ranges in the same package.

View details

Alternative comparison matrix

Feature / factor	TMP102AIDRLR	TMP112AIDRLR(UMW)	TMP112BIDRLR(UMW)	Compatibility / risk
Package	SOT-563	SOT-563	SOT-563	SOT-563 — Package matches, increasing likelihood of pin compatibility.; TMP112BIDRLR(UMW): Package matches, increasing likelihood of pin compatibility.
Voltage	1.4V ~ 3.6V	1.4V ~ 5.5V	1.4V ~ 5.5V	1.4V ~ 5.5V — Candidate has a wider supply voltage range.; TMP112BIDRLR(UMW): Candidate has a wider supply voltage range.
Temperature	-40°C ~ 125°C	-55°C ~ +150°C	-55°C ~ +150°C	-55°C ~ +150°C — Candidate has a wider operating temperature range.; TMP112BIDRLR(UMW): Candidate has a wider operating temperature range.
Interface	I2C/SMBus	I2C/SMBus	I2C, SMBus	I2C/SMBus / I2C, SMBus — Digital interface protocol matches.; TMP112BIDRLR(UMW): Digital interface protocol matches.
Accuracy	±0.5°C (typ)	±0.5°C	-	±0.5°C — Accuracy matches the typical value of the target.

Application & sourcing insights

Questions & answers

The best alternative identified is the TMP112AIDRLR from UMW. It offers wider supply voltage (1.4V-5.5V) and operating temperature (-55°C to 150°C) ranges in the same SOT-563 package.