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Best Alternatives to BAT54SLT1G

Package: TO-236-3, SC-59, SOT-23-3onsemiDiodes - Rectifiers - ArraysPackage: Tape & Reel (TR); Cut Tape (CT); Digi-Reel®Voltage - DC Reverse (Vr) (Max): 30 VCurrent - Average Rectified (Io) (per Diode): 200mA (DC)Voltage - Forward (Vf) (Max) @ If: 800 mV @ 100 mACurrent - Reverse Leakage @ Vr: 2 µA @ 25 V

Finding a substitute for the BAT54SLT1G, a dual series Schottky diode in a SOT-23 package, requires careful matching of its low forward voltage. While several parts share the package, electrical differences are common and require review.

AI replacement insight

Electrical riskhigh

Higher forward voltage can impact signal levels, power efficiency, and thermal performance.

Package risklow

Candidates share the common SOT-23 package and series configuration.

Can it be replaced directly?

No direct, drop-in replacement is confirmed. The closest candidates are functional alternates like the BAV99 series, which require circuit validation because they are standard diodes, not low-Vf Schottky diodes.

Best replacement path

Use a functional alternate like the BAV99 series, but you must verify the impact of its higher forward voltage in your circuit.

Main risk

The primary risk is the significantly higher forward voltage (Vf) of alternate parts, as the target is a low-Vf Schottky diode.

Recommended alternatives

2
BAV99,215 package
BAV99,215

Nexperia USA Inc.

Needs validationhigh risk

Cross-vendor functional alternate in SOT-23 package. Requires review due to higher forward voltage.

View details

Alternative comparison matrix

Feature / factorBAT54SLT1GBAV99,215BAV99LT1GAlt 3Compatibility / risk
PackageSOT-23SOT23 (TO-236AB)-SOT-23 — Package matches.
Configuration1 Pair Series Connection1 Pair Series Connection-1 Pair Series Connection — Diode configuration matches.
Voltage30V100V-100V — Higher voltage rating provides more margin.
Trr5ns4ns-4ns — Faster reverse recovery time is an improvement.
Forward Voltage~0.35V~0.7V-1V-~0.7V — Significantly higher Vf (standard diode vs. target's Schottky).
Current200mA-215mA215mA — Slightly higher current rating.

Application & sourcing insights

Questions & answers

The BAV99 series (e.g., BAV99LT1G, BAV99,215) are functional alternatives in the same package, but they are not Schottky diodes and have a higher forward voltage. Careful circuit analysis is required before substitution.