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2SA1774TLR

Public Made by Adom

by adom

ROHM Semicon Bipolar Transistors - BJT, SOT-416. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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2SA1774TLR

ROHM Semicon · Bipolar Transistors - BJT · SOT-416

2SA1774TLR from ROHM Semicon, in a SOT-416. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 E passive Emitter of the PNP transistor; Emitter-base voltage rating VEBO is -6 V.
2 B passive Base of the PNP transistor; hFE is 120 to 560 at VCE = -6 V, IC = -1 mA.
3 C passive Collector of the PNP transistor; VCEO is -50 V and continuous collector current IC is -150 mA.

Key specifications

Parameter Value
Manufacturer ROHM Semicon
Package SOT-416
Category Transistors
Pins 3

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter Symbol Min Typ Max Unit Conditions Page
Collector-base breakdown voltage BVCBO -60 V IC = -50μA 2
Collector-emitter breakdown voltage BVCEO -50 V IC = -1mA 2
Emitter-base breakdown voltage BVEBO -6 V IE = -50μA 2
Collector cut-off current ICBO -100 nA VCB = -60V 2
Emitter cut-off current IEBO -100 nA VEB = -6V 2
Collector-emitter saturation voltage VCE(sat) -500 mV IC = -50mA, IB = -5mA 2
DC current gain hFE 120 560 VCE = -6V, IC = -1mA 2
Output capacitance Cob 4 5 pF VCB = -12V, IE = 0A, f = 1MHz 2
Collector-base voltage VCBO -60 V Ta = 25°C 2
Collector-emitter voltage VCEO -50 V Ta = 25°C 2
Emitter-base voltage VEBO -6 V Ta = 25°C 2
Collector current IC -150 mA Ta = 25°C 2
Collector current (pulse) ICP -200 mA Pw=1ms Single Pulse 2
Power dissipation PD 150 mW 2SA1774; each terminal mounted on a reference footprint 2
Junction temperature Tj 150 ℃ 2
Range of storage temperature Tstg -55 150 ℃ 2
Transition frequency fT 140 MHz VCE = -12V, IE = 2mA, f = 100MHz 2

CAD (KiCad official)

  • Symbol: 2SA1774TLR
  • Footprint: Package_TO_SOT_SMD:SOT-416
  • 3D model: SOT-416, generated from the KiCad footprint (body from the F.Fab outline, terminals on the pads, 0.8 mm nominal SOT-523 height). Neither the vendor nor KiCad ships a 3D model for this package, so the dimensions are nominal, not the manufacturer's CAD (STEP)
  • 3D model files: 2sa1774tlr-etched.step / 2sa1774tlr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); 2sa1774tlr.step / 2sa1774tlr.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: ROHM Semicon datasheet (15 pp, sha256 694c9fa4b298276a, retrieved 2026-10-22, tier: manufacturer)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-5-5 (text+vision), consensus claude-opus-5-5 (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF