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2SA812-G

Foshan Blue Rocket Elec · Bipolar (BJT) · SOT-23

2SA812-G from Foshan Blue Rocket Elec, in a SOT-23. 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 Base passive Base terminal of the silicon PNP transistor; the datasheet gives the emitter-to-base voltage limit VEBO as -5.0 V and the base current used in the VCE(sat) test as IB=-10 mA at IC=-100 mA.
2 E passive Emitter terminal of the silicon PNP transistor; the emitter-to-base voltage is rated at VEBO = -5.0 V maximum.
3 Collector passive Collector terminal of the silicon PNP transistor; the datasheet limits the collector current to IC = -100 mA and collector-to-base voltage to VCBO = -60 V, with collector-to-emitter voltage VCEO = -50 V.

Key specifications

Parameter Value
Manufacturer Foshan Blue Rocket Elec
Package SOT-23
Category Transistors/Thyristors
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
DC Current Gain (G grade, hFE range) hFE 200 400 1
DC Current Gain hFE 90 200 600 VCE=-6.0V IC=-1.0mA 2
Collector to Base Voltage VBE -0.58 -0.62 -0.68 V VCE=-6.0V IC=-1.0mA 2
Collector Cut-Off Current ICBO -0.1 μA VCB=-60V IE=0 2
Emitter Base Cut-Off Current IEBO -0.1 μA VEB=-5.0V IC=0 2
Collector to Base Voltage VCBO -60 V 2
Collector to Emitter Voltage VCEO -50 V 2
Emitter to Base Voltage VEBO -5 V 2
Collector Current IC -100 mA 2
Collector Power Dissipation PC 200 mW 2
Junction Temperature Tj 150 ℃ 2
Storage Temperature Range Tstg -55 150 ℃ 2
Collector to Emitter Saturation Voltage VCE(sat) -0.18 -0.3 V IC=-100mA IB=-10mA 2
Transition Frequency fT 180 MHz VCE=-6.0V IC=-10mA 2
Collector Output Capacitance Cob 4.5 pF VCB=-10V IE=0 f=1.0MHz 2

CAD (KiCad official)

  • Symbol: 2SA812-G
  • Footprint: Package_TO_SOT_SMD:SOT-23
  • 3D model: SOT-23 (KiCad packages3D, STEP)
  • 3D model files: 2sa812-g-etched.step / 2sa812-g-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); 2sa812-g.step / 2sa812-g.glb are the bare package body.

Provenance

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

  • Datasheet: Foshan Blue Rocket Elec datasheet (6 pp, sha256 e11cc31e77f0ba25, retrieved 2026-10-19, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-5-5 (text), consensus claude-sonnet-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