ProjectsPricingInsights

Best Alternatives to 78L05S

Package: SOT-23fuxinsemiVoltage Regulators - LinearRegulator type: Fixed linear voltage regulatorOutput voltage: 5 VRated output current: 100 mAMaximum input voltage: 35 VTypical dropout voltage: 1.7 V at 40 mA

78L05S is a 5V 100mA SOT-23 regulator. The candidates found are functional alternatives, but none is a verified pin-compatible replacement.

AI replacement insight

Electrical riskmedium

Vin, dropout and stability caps vary.

Package riskhigh

Kept candidates use SOT-89, SOT-223 or DPAK.

Firmware risklow

Analog regulator; no firmware.

Sourcing riskmedium

Some lifecycle or product URLs are incomplete.

Can it be replaced directly?

No verified pin-compatible replacement is proven from the provided evidence.

Best replacement path

First search a SOT-23 78L05S or 78L05 variant with matching pinout; use larger packages only with board redesign.

Main risk

Package and pinout are not verified for direct replacement.

Recommended alternatives

6
L78M05ABDT-TR package
L78M05ABDT-TR

STMicroelectronics

Needs validationmedium risk

L78M05ABDT-TR is a robust 5V alternative for boards that can change footprint.

View details

Alternative comparison matrix

Feature / factor78L05SL78M05ABDT-TR78L05L78M05CDT-TRCompatibility / risk
PackageSOT-23DPAK TO-252--DPAK TO-252 — layout change
Pinout3-pin3-pin--3-pin — not mapped
Voltage7.5-20V35V max--30V max — rating margin
Current100mA500mA--100mA — same nominal
Temperature-20 to 120C-40 to 125C--missing — verify range

Application & sourcing insights

Questions & answers

From this set, L78M05ABDT-TR has strong electrical margin but needs a DPAK layout change.