Is there a pin-compatible replacement for BAV74?

Yes, BAV74LT1G is a pin-compatible replacement for the BAV74. MMBD4148CC is also pin-compatible and serves as an electrical upgrade.

What risks should I check before replacing BAV74?

First, confirm the replacement has a 'Common Cathode' configuration. Second, ensure its voltage, current, and power ratings are equal to or greater than the BAV74. Finally, check the reverse recovery time (trr) for your application.

BAV74 Alternatives, Datasheet & Cross Reference | onsemi

The onsemi BAV74 is an obsolete common cathode switching diode array in a SOT-23 package. Active, pin-compatible replacements like the BAV74LT1G and upgraded alternatives are readily available.

AI replacement insight

Electrical riskhigh

Using a diode with a series or common anode configuration will cause circuit failure.

Package risklow

SOT-23 is a standard package, but pinout must be confirmed as common cathode.

Can it be replaced directly?

Yes, BAV74LT1G from onsemi is a direct, active replacement for the obsolete BAV74, sharing the same package and electrical ratings.

Best replacement path

BAV74LT1G is the most direct replacement. For an upgrade with higher electrical margins, consider MMBD4148CC.

Main risk

The primary risk is selecting a part with the wrong internal diode configuration, such as 'series' instead of 'common cathode'.

Recommended alternatives

Active, pin-compatible replacement from onsemi with identical key electrical ratings.

View details

Alternative comparison matrix

Feature / factor	BAV74	BAV74LT1G	MMBD4148CC	LBAV74LT1G	Compatibility / risk
Package	SOT-23	SOT-23 (TO-236)	SOT-23	SOT-23	SOT-23 (TO-236) — Package is form-factor compatible.; MMBD4148CC: Package is form-factor compatible.; LBAV74LT1G: Package is form-factor compatible.
Pinout	1 Pair Common Cathode	Dual Common Cathode	1 Pair Common Cathode	Unknown	Dual Common Cathode / 1 Pair Common Cathode / Unknown — Pin configuration matches target.; MMBD4148CC: Pin configuration matches target.; LBAV74LT1G: Configuration is missing, but part number implies a match. Datasheet check required.
Voltage	50.0V	50.0V	100.0V	50.0V	50.0V / 100.0V — Voltage rating is identical.; MMBD4148CC: Higher voltage rating provides more margin.; LBAV74LT1G: Voltage rating is identical.
Current	0.2A	0.2A	-	-	0.2A — Current rating is identical.
Lifecycle	Obsolete	Active	-	-	Active — Candidate is active, target is obsolete.
Power	0.225W	-	0.35W	Missing	0.35W / Missing — Higher power rating provides more margin.; LBAV74LT1G: Power rating must be verified from datasheet.

Application & sourcing insights

Questions & answers

The best alternative is BAV74LT1G from onsemi, which is an active, pin-compatible part with identical specifications. For a more robust option, MMBD4148CC offers higher voltage and power ratings.