Is there a pin-compatible replacement for RS3007-3.3ASYF5?

Yes, parts like TPMIC5219-3.3YM5 and SSP7603P33M5R are pin-compatible in the same SOT23-5 package. However, they are not electrically equivalent due to a much lower input voltage rating and must not be used without verifying system voltage.

What risks should I check before replacing RS3007-3.3ASYF5?

The primary risk is electrical overstress. The RS3007-3.3ASYF5 is rated for 45V input, while most potential alternatives are rated for 20V or less. Using a lower-voltage part in a high-voltage circuit will cause permanent damage.

RS3007-3.3ASYF5 Alternatives, Datasheet & Cross Reference | NI

Finding a substitute for the RS3007-3.3ASYF5, a 3.3V LDO, requires careful attention to its 45V maximum input voltage. While pin-compatible options exist, they often have much lower voltage ratings, posing a significant risk if not properly vetted for your application.

AI replacement insight

Electrical riskhigh

Candidates have Vin_max of 15-20V vs target's 45V. Risk of immediate failure if used in a high-voltage application.

Package risklow

Candidates share the same SOT23-5 package and pinout, ensuring physical compatibility.

Can it be replaced directly?

No direct, risk-free replacement was found. All reviewed candidates have a significantly lower maximum input voltage (15-20V) compared to the target's 45V.

Best replacement path

parametric_relaxed

Main risk

Electrical overstress due to lower input voltage rating.

Recommended alternatives

Pin-compatible LDO with higher current, but a significantly lower max input voltage. Requires careful design review.

View details

Alternative comparison matrix

Feature / factor	RS3007-3.3ASYF5	TPMIC5219-3.3YM5	SSP7603P33M5R	Compatibility / risk
Voltage	Up to 45V	2V to 20V	Up to 15V	2V to 20V / Up to 15V — Candidate has significantly lower max input voltage.; SSP7603P33M5R: Candidate has significantly lower max input voltage.
Current	300mA	500mA	500mA	500mA — Candidate offers higher output current.; SSP7603P33M5R: Candidate offers higher output current.
Quiescent Current	3µA	1.5µA	1.5uA	1.5µA / 1.5uA — Lower quiescent current is beneficial for battery life.; SSP7603P33M5R: Lower quiescent current is beneficial.
Package	SOT23-5	SOT-23-5	SOT23-5	SOT-23-5 / SOT23-5 — Package is physically compatible.; SSP7603P33M5R: Package is physically compatible.
Pinout	IN, GND, EN, NC, OUT	Verified from datasheet	Verified from datasheet	Verified from datasheet — Pin functions match target (IN, GND, EN, NC, OUT).; SSP7603P33M5R: Pin functions match target (VIN, GND, EN, NC, VOUT).

Application & sourcing insights

Questions & answers

No direct drop-in replacement has been identified. Alternatives like TPMIC5219-3.3YM5 exist but have a much lower max input voltage (20V vs 45V) and require careful engineering review.