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Best Alternatives to BAS40-04LT1G

Package: TO-236-3, SC-59, SOT-23-3onsemiDiodes - Rectifiers - ArraysPackage: Tape & Reel (TR); Cut Tape (CT); Digi-Reel®Voltage - DC Reverse (Vr) (Max): 40 VCurrent - Average Rectified (Io) (per Diode): 120mA (DC)Voltage - Forward (Vf) (Max) @ If: 1 V @ 40 mACurrent - Reverse Leakage @ Vr: 1 µA @ 25 V

Finding a replacement for the BAS40-04LT1G dual series Schottky diode involves matching the SOT-23 package and series configuration. Several options offer upgraded performance and are widely available.

AI replacement insight

Electrical risklow

Candidates offer superior voltage and current ratings.

Package riskmedium

Package is compatible, but pinout must be verified from the datasheet.

Can it be replaced directly?

Direct replacement for BAS40-04LT1G should use only Datasheet verified or Strong match candidates; many approved options still require engineering review.

Best replacement path

Upgrade to BAV99LT1G for a direct manufacturer alternative with improved electrical ratings.

Main risk

Pinout mismatch is the primary risk, as SOT-23 pin assignments can vary. Datasheet verification is essential.

Recommended alternatives

3
BAV99LT1G package
BAV99LT1G

onsemi

Needs validationlow risk

A potential pin-compatible substitute from the same manufacturer with higher voltage and current ratings.

View details

Alternative comparison matrix

Feature / factorBAS40-04LT1GBAV99LT1GBAV99,215MMBD4148SECompatibility / risk
PackageSOT-23 (TO-236)SOT-23--SOT-23 — Package is form-factor compatible.
Polarity Or Type1 Pair Series Connection1 Pair Series Connection--1 Pair Series — Internal diode configuration matches.
Voltage40V100V--100V — Higher voltage rating provides more margin.
Current120mA215mA--200mA — Higher current rating is an upgrade.

Application & sourcing insights

Questions & answers

Verified drop-in options for BAS40-04LT1G are limited in the current batch. Review candidates marked Strong match or Datasheet verified, and validate package, pinout, and electrical limits before committing a BOM change.