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ROHM Semiconductor 2SA1037AKT146R — Memory (DRAM / SRAM / Flash / EEPROM)

2SA1037AKT146R PNP Transistor, 50V 150mA SOT-23-3, Active

MPN2SA1037AKT146R
End of Life

ROHM 2SA1037AKT146R, PNP small-signal transistor, 50 V collector-emitter breakdown, 150 mA collector current, 140 MHz transition frequency, 200 mW max power, SOT-23-3 surface-mount package, ROHS3 compliant, active lifecycle.

$0.29Ref. price · indicative, final on quote
ROHM Semiconductor 2SA1037AKT146R datasheet (PDF)
PackagingTO-236-3, SC-59, SOT-23-3
RoHSROHS3 Compliant
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

2SA1037AKT146R specifications
ParameterValue
MountingSurface Mount
FET typePNP
Voltage - collector emitter breakdown50 V
Current - collector (Ic)150 mA
Current - collector cutoff100nA (ICBO)
DC current gain (hFE) (Min) @ ic, vce180 @ 1mA, 6V
Power - max200 mW
Frequency140MHz
Operating temperature150°C (TJ)
PackageTape & Reel (TR); Cut Tape (CT)
CaseTO-236-3, SC-59, SOT-23-3
Vce saturation (Max) @ ib, ic500mV @ 5mA, 50mA

Product details

PNP small-signal transistor for general-purpose switching and amplification

The ROHM 2SA1037AKT146R is a PNP epitaxial planar transistor in a three-lead SOT-23-3 surface-mount package, designed for general-purpose switching and amplifier applications. The 140 MHz transition frequency keeps switching edges clean for moderate-speed digital or analog stages, though it is not intended for RF power or high-current regulation.

The SOT-23-3 footprint (TO-236-3 / SC-59) is a compact three-lead SMD that reflows well with standard profiles. The small thermal mass means it heats up fast under a hot-air station; use a fine nozzle at 300 °C and lift the part, not the pad. No exposed pad, so no via-stitch requirement. The 200 mW power limit is the package ceiling — derate above 25 °C ambient per the datasheet curve if dissipating near the max.

Frequently asked questions

What is the equivalent of 2SA1037AKT146R?

The closest functional equivalent is the 2SA1037AKT146Q, which uses the same PNP die and shares identical ratings (50 V Vce, 150 mA Ic, 140 MHz fT, 200 mW power, SOT-23-3 package). For a direct drop-in, the 2SA1037AKT146Q is the best match.