What risks should I check before replacing MBRA2H100T3G?

Before replacing, verify three key parameters: 1) Diode Type: Ensure the replacement is a Schottky, not a standard or ultrafast diode. 2) Forward Voltage (Vf): A higher Vf will increase power loss and heat. 3) Max Temperature: Ensure the replacement's temperature rating (ideally 175°C) meets your application's requirements.

MBRA2H100T3G Alternatives, Datasheet & Cross Reference | onsemi

Finding a substitute for the onsemi MBRA2H100T3G, a 100V 2A Schottky rectifier, involves matching its low forward voltage, high temperature rating, and SMA package. Several strong alternatives exist from other manufacturers.

AI replacement insight

Electrical riskhigh

Using a non-Schottky diode will significantly increase forward voltage drop and alter switching behavior.

Electrical riskmedium

Using a part with a lower temperature rating (e.g., 125°C or 150°C) is risky in high-temperature applications.

Package risklow

The SMA/DO-214AC package is standardized, making physical replacement straightforward.

Can it be replaced directly?

Direct replacement for MBRA2H100T3G should use only Datasheet verified or Strong match candidates; many approved options still require engineering review.

Best replacement path

STPS2H100A from STMicroelectronics is the best-matched alternative, offering the same package, ratings, and diode technology.

Main risk

The main risks are substituting a non-Schottky diode (e.g., Ultrafast), which would increase power loss, or choosing a part with a lower maximum operating temperature.

Recommended alternatives

A strong pin-compatible Schottky rectifier from STMicroelectronics with matching voltage, current, and package.

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Alternative comparison matrix

Feature / factor	MBRA2H100T3G	STPS2H100A	STPS2150A	SS310	Compatibility / risk
Package	SMA (DO-214AC)	SMA	SMA (DO-214AC)	SMA (DO-214AC)	SMA / SMA (DO-214AC) — Package is form-factor compatible.; STPS2150A: Package is form-factor compatible.; SS310: Package is form-factor compatible.
Diode Type	Schottky	Schottky	Schottky	Schottky	Schottky — Both are Schottky rectifiers.; STPS2150A: Both are Schottky rectifiers.; SS310: Both are Schottky rectifiers.
Voltage	100V	100V	150V	100V	100V / 150V — Reverse voltage matches.; STPS2150A: Higher voltage rating provides more margin.; SS310: Reverse voltage matches.
Current	2.0A	2.0A	2.0A	3.0A	2.0A / 3.0A — Forward current matches.; STPS2150A: Forward current matches.; SS310: Higher current rating provides more margin.
Forward Voltage	0.79V @ 2A	≤0.79V @ 2A	≤0.85V @ 2A	-	≤0.79V @ 2A / ≤0.85V @ 2A — Forward voltage is comparable or better.; STPS2150A: Forward voltage is slightly higher but acceptable.
Temperature	-65°C to +175°C	-65°C to +175°C	-65°C to +175°C	-55°C to +150°C	-65°C to +175°C / -55°C to +150°C — Operating temperature range matches.; STPS2150A: Operating temperature range matches.; SS310: Reduced max operating temperature.

Application & sourcing insights

Questions & answers

Verified drop-in options for MBRA2H100T3G 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.