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ROHM Semiconductor 2SA1037AKT146Q — Memory (DRAM / SRAM / Flash / EEPROM)

2SA1037AKT146Q PNP Transistor, 50V 150mA SOT-23-3, Active

MPN2SA1037AKT146Q
End of Life

Rohm Semiconductor 2SA1037AKT146Q, PNP transistor, 50 V collector-emitter breakdown, 150 mA collector current, 140 MHz transition frequency, SOT-23-3 surface-mount package, 200 mW power dissipation, ROHS3 compliant.

$0.29Ref. price · indicative, final on quote
ROHM Semiconductor 2SA1037AKT146Q 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

2SA1037AKT146Q 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, vce120 @ 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 transistor for signal switching and amplification

The 2SA1037AKT146Q from Rohm Semiconductor is a general-purpose PNP transistor in a SOT-23-3 surface-mount package.

ROHS3 compliant.

SOT-23-3 footprint and field-swap considerations

The part comes in a TO-236-3 / SC-59 / SOT-23-3 package (supplier device package SMT3). The SOT-23-3 footprint is one of the most common for small-signal transistors, so board layout is standard. No lab bench needed for a swap; just basic ESD precautions and a fine-tip iron.

Power dissipation and thermal limits

Maximum power dissipation is 200 mW, and the junction temperature rating goes to 150 °C. In a typical signal-level switching or preamp stage, this is plenty of headroom — but if you are pushing near the 150 mA collector current limit continuously, derate for ambient temperature. The SOT-23-3 package has modest thermal mass, so keep the trace copper area reasonable if the part runs warm.

Frequently asked questions

Is 2SA1037AKT146Q a direct replacement for 2SA1037AK?

The 2SA1037AKT146Q is a specific tape-and-reel variant of the 2SA1037AK series. The 'T146Q' suffix indicates the packaging and reel quantity — electrically it is the same PNP transistor as other 2SA1037AK variants. For a direct drop-in, verify the package code (SMT3 / SOT-23-3) matches your board footprint.