Is there a pin-compatible replacement for BAT54TW?

No pin-compatible replacement can be guaranteed without a datasheet confirming the BAT54TW's internal diode arrangement. Suffixes like 'TW' often denote a dual-series configuration, but this must be verified against your schematic and layout.

What risks should I check before replacing BAT54TW?

The primary risk is the diode configuration and pinout. You must confirm if you need a dual-series, single-series, or other configuration. Also verify voltage (Vr), current (If), and forward voltage (Vf) to ensure they meet your circuit's requirements.

BAT54TW Alternatives, Datasheet & Cross Reference | Slkor(SLKORMICRO Elec.)

Finding a substitute for the BAT54TW SOT-363 Schottky diode array requires careful verification of the internal diode configuration. While several parts share the same package and basic electrical ratings, differences in pinout and the number of diodes present significant risks.

AI replacement insight

Package riskhigh

While the SOT-363 package matches, the internal pin functions are likely different, requiring PCB redesign.

Electrical riskmedium

Some candidates are not Schottky diodes or have lower ratings, requiring validation of Vf and current handling.

Sourcing risklow

Most candidates are actively manufactured by major suppliers.

Can it be replaced directly?

No direct drop-in replacement for BAT54TW is confirmed due to ambiguity in its internal diode configuration. All candidates require careful engineering review.

Best replacement path

functional_alternate

Main risk

The primary risk is a mismatch in the internal diode configuration and pinout, which could lead to circuit failure.

Recommended alternatives

Shares identical electrical specs and manufacturer, but may be a downgrade with only a single diode pair.

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Alternative comparison matrix

Feature / factor	BAT54TW	BAT54BRW	BAT54XY,115	Compatibility / risk
Package	SOT-363	SOT-363	SOT-363 (SC-88)	SOT-363 / SOT-363 (SC-88) — Package matches.; BAT54XY,115: Package is form-factor compatible.
Configuration	Unknown (Assumed 2 Pair Series)	1 Pair Series Connection	4 Independent (Dual Series)	1 Pair Series Connection / 4 Independent (Dual Series) — Candidate has one diode pair; target likely has two. This is a functional downgrade.; BAT54XY,115: Target is likely dual-series; candidate has a different, more complex configuration.
Voltage	30V	30V	30V	30V — Voltage rating matches.; BAT54XY,115: Voltage rating matches, no safety margin.
Current	200mA	200mA	200mA	200mA — Current rating matches.; BAT54XY,115: Current rating matches.
Forward Voltage	1.0V @ 100mA	1.0V @ 100mA	-	1.0V @ 100mA — Forward voltage matches.
Diode Type	Schottky	-	Schottky	Schottky — Both are Schottky diodes.

Application & sourcing insights

Questions & answers

There is no confirmed direct drop-in replacement for BAT54TW without verifying its exact pinout. Candidates like Nexperia's BAT54XY,115 offer similar electrical performance but have a different internal configuration requiring board layout changes.