Is there a pin-compatible replacement for LM321DTR(XBLW)?

TP2261-TR is available in the same SOT-23-5 package and likely shares the standard pinout, but this must be verified by comparing datasheets. It is not a drop-in replacement due to a 10x increase in quiescent current.

What risks should I check before replacing LM321DTR(XBLW)?

The main risks are electrical. Verify the substitute's supply voltage range (3-32V), quiescent current (power budget), bandwidth, and slew rate. A faster amplifier may cause instability in a circuit designed for a slower one.

LM321DTR(XBLW) Alternatives, Datasheet & Cross Reference | XBLW

The LM321DTR(XBLW) is a general-purpose high-voltage op-amp. Substitutes must match its wide 3V to 32V supply range, a key feature not found in many common low-voltage op-amps.

AI replacement insight

Electrical riskhigh

Most alternatives have incompatible voltage or current ratings.

Package risklow

SOT-23-5 is a common package with standard pinouts.

Firmware risklow

Op-amps typically do not involve firmware.

Can it be replaced directly?

No direct drop-in replacement was found. All viable options have significant parametric differences, primarily in quiescent current.

Best replacement path

Reviewing high-voltage op-amps from major manufacturers that match the 3-32V supply range and SOT-23-5 package.

Main risk

The primary risk is selecting a common low-voltage op-amp that cannot handle the target's up to 32V supply, leading to device failure.

Recommended alternatives

A functional alternative in the same package, but with significantly higher power consumption and speed.

View details

Alternative comparison matrix

Feature / factor	LM321DTR(XBLW)	TP2261-TR	Compatibility / risk
Package	SOT-23-5	SOT-23-5	SOT-23-5 — Package matches.
Voltage	3V to 32V	3V to 36V	3V to 36V — Candidate's supply range fully covers the target's.
Current	100µA	1mA	1mA — Quiescent current is 10x higher, a major risk for power-sensitive designs.
Bandwidth	1.0 MHz	3.5 MHz	3.5 MHz — Higher bandwidth may require circuit stability review.
Slew Rate	0.4 V/µs	15 V/µs	15 V/µs — Significantly faster slew rate.
Temperature	-40°C to 85°C	-40°C to 125°C	-40°C to 125°C — Wider operating temperature range.

Application & sourcing insights

Questions & answers

Finding a direct, drop-in replacement is challenging. TP2261-TR is a functional alternative in the same package but has 10x higher power consumption, requiring careful review of the application's power budget.