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Best Alternatives to B772

Package: SOT-89Slkor(SLKORMICRO Elec.)TransistorsTransistor Type: PNPCollector-Emitter Voltage (VCEO): -30 VCollector-Base Voltage (VCBO): -40 VEmitter-Base Voltage (VEBO): -6 VCollector Current (IC): -3 A

B772 is a PNP SOT-89 power transistor. Listed alternatives are derated options, not verified drop-in replacements.

AI replacement insight

Electrical riskhigh

kept options are below 3A

Package riskmedium

SOT-89 matches, pinout missing

Firmware risklow

discrete BJT only

Sourcing riskmedium

lifecycle data limited

Can it be replaced directly?

No verified pin-compatible B772 replacement is proven from the provided data.

Best replacement path

Start with 2SA1020G-Y-AB3-R for derated loads; verify pinout and SOA.

Main risk

Pinout is missing and current ratings are lower than B772.

Recommended alternatives

1
2SA1020G-Y-AB3-R package
2SA1020G-Y-AB3-R

UTC(Unisonic Tech)

Needs validationmedium risk

2SA1020G-Y-AB3-R is a PNP SOT-89 option for derated B772 applications.

View details

Alternative comparison matrix

Feature / factorB7722SA1020G-Y-AB3-RBCX51-16Alt 3Compatibility / risk
PackageSOT-89SOT-89SOT-89SOT-89 — same package name; BCX51-16: same package name
Pinoutunknownunknownunknownunknown — not verified; BCX51-16: not verified
Voltage-30V VCEO-50V VCEO-45V VCEO-50V VCEO / -45V VCEO — higher rating; BCX51-16: higher rating
Current-3A-2A-1A-2A / -1A — lower IC; BCX51-16: derating needed
Power500mW500mW1W500mW / 1W — same PD; BCX51-16: higher PD

Application & sourcing insights

Questions & answers

From the provided data, 2SA1020G-Y-AB3-R is the closest kept option, but it is a lower-current substitute.