Is there a pin-compatible replacement for RT9193-3.3?

ETA5055V330DS2F (SOT23-5) and ETA5060V330S8F (SOT89-5) have matching packages and pin counts, making them potential pin-compatible replacements. Pin-for-pin compatibility must be verified by comparing datasheets before use.

What risks should I check before replacing RT9193-3.3?

The primary risks are electrical and mechanical. Verify the candidate's maximum input voltage meets your circuit's needs (some alternatives are 5.5V max vs. the original's 7V). Always confirm the pinout is identical to avoid board damage.

RT9193-3.3 Alternatives, Datasheet & Cross Reference | TDSEMIC

Finding a replacement for the RT9193-3.3 LDO involves checking key electrical parameters. While several modern LDOs offer better performance, careful attention must be paid to the maximum input voltage and pinout configuration.

AI replacement insight

Electrical riskhigh

Candidate max input voltage is lower (5.5V vs 7V). Exceeding this will damage the part.

Package riskmedium

While packages match, pinout must be verified from datasheets to ensure compatibility.

Can it be replaced directly?

There are no confirmed direct drop-in replacements. However, ETA5055V330DS2F and ETA5060V330S8F are strong functional alternatives that require verification.

Best replacement path

ETA5055V330DS2F or ETA5060V330S8F are strong candidates if the application's input voltage does not exceed 5.5V.

Main risk

The primary risk is the lower maximum input voltage (5.5V) of the best alternatives compared to the target's 7V.

Recommended alternatives

A potential alternative in a matching SOT23-5 package with higher current, but a lower maximum input voltage.

View details

Alternative comparison matrix

Feature / factor	RT9193-3.3	ETA5055V330DS2F	ETA5060V330S8F	Compatibility / risk
Package	SOT23-5, SOT89-5	SOT23-5	SOT89-5	SOT23-5 / SOT89-5 — Package matches one of the target's variants.; ETA5060V330S8F: Package matches one of the target's variants.
Voltage	1.8 V to 7 V	1.8 V to 5.5 V	1.8 V to 5.5 V	1.8 V to 5.5 V — Maximum input voltage is lower.; ETA5060V330S8F: Maximum input voltage is lower.
Current	300 mA	500 mA	1 A	500 mA / 1 A — Higher output current capability.; ETA5060V330S8F: Significantly higher output current capability.
Temperature	-20 °C to +60 °C	-40°C to 85°C	-	-40°C to 85°C — Wider operating temperature range.
Quiescent Current	25 µA	-	20 µA	20 µA — Lower quiescent current.

Application & sourcing insights

Questions & answers

ETA5055V330DS2F and ETA5060V330S8F are strong functional alternatives with higher output current. However, they have a lower maximum input voltage of 5.5V, which must be checked against your application's requirements.