Is there a pin-compatible replacement for DS18B20U(UMW)?

Yes, parts like DS18B20Z(UMW) and the original DS18B20 are expected to be pin-compatible as they share the same TO-92 package and function. However, always verify the pinout (GND, DQ, VDD) from the datasheet before soldering.

What risks should I check before replacing DS18B20U(UMW)?

Verify the package and pinout are identical. Check the operating temperature range and accuracy meet your requirements. Since it's a digital part, ensure the 1-Wire timing and protocol are fully compatible, though this is usually standard for DS18B20 clones.

DS18B20U(UMW) Alternatives, Datasheet & Cross Reference | UMW

DS18B20U(UMW) is a popular 1-Wire digital temperature sensor in a TO-92 package. Alternatives exist from the original manufacturer and other clone vendors, but require careful verification of package and pinout.

AI replacement insight

Package riskmedium

Different suffixes may indicate different packages or lead forms.

Firmware risklow

All DS18B20 clones should follow the same 1-Wire protocol.

Sourcing risklow

Many manufacturers produce DS18B20 clones.

Can it be replaced directly?

Yes, other parts in the DS18B20 family, like DS18B20Z(UMW), are likely direct replacements, but require datasheet verification for the exact package and pinout.

Best replacement path

Use another DS18B20 clone like DS18B20Z(UMW) after verifying the package, or consider the original DS18B20 from Analog Devices if stock is available.

Main risk

The primary risk is package incompatibility. While functionally identical, different suffixes can indicate different lead forms or packages.

Recommended alternatives

The original part from Analog Devices, functionally identical but obsolete.

View details

Alternative comparison matrix

Feature / factor	DS18B20U(UMW)	DS18B20	DS18B20Z(UMW)	Compatibility / risk
Lifecycle	Active	Obsolete	-	Obsolete — Candidate is obsolete and not for new designs.
Interface	1-Wire	1-Wire	1-Wire	1-Wire — Interface protocol matches.; DS18B20Z(UMW): Interface protocol matches.
Package	TO-92	TO-92-3	SOJ8, TO-92	TO-92-3 / SOJ8, TO-92 — Package matches.; DS18B20Z(UMW): TO-92 is an option but data is ambiguous. Verification needed.
Voltage	2.5V to 5.5V	2.5V to 5.5V	2.5V to 5.5V	2.5V to 5.5V — Supply voltage range matches.; DS18B20Z(UMW): Supply voltage range matches.
Temperature	-55°C to +125°C	-	-55°C to +125°C	-55°C to +125°C — Operating temperature range matches.
Pinout	3	-	null	null — Pin count data is missing for candidate.

Application & sourcing insights

Questions & answers

The DS18B20Z(UMW) from the same manufacturer is a strong candidate, likely a packaging variant. The original DS18B20 from Analog Devices is also a functional match but is obsolete.