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2SB776

Public Made by Adom

by adom

Changjing Bipolar Transistors - BJT, TO-126. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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2SB776

Changjing · Bipolar Transistors - BJT · TO-126

2SB776 from Changjing, in a TO-126. 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 EMITTER passive Emitter of the PNP transistor; the datasheet gives no emitter-specific limit, and the emitter-base voltage VEBO is -5 V with collector current IC -3 A continuous.
2 COLLECTOR passive Collector of the PNP transistor; the maximum ratings give VCBO -50 V, VCEO -50 V and collector current IC -3 A continuous.
3 BASE passive Base of the PNP transistor; the datasheet gives no base-specific limit, and saturation is tested at IC -2 A with IB -200 mA.

Key specifications

Parameter Value
Manufacturer Changjing
Package TO-126
Category Triode/MOS Tube/Transistor
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 Voltage VCBO -50 V 1
Collector-Emitter Voltage VCEO -50 V 1
Emitter-Base Voltage VEBO -5 V 1
Collector Current Continuous IC -3 A 1
Collector Power Dissipation PC 1 W 1
Operation Junction and Storage Temperature Range TJ,Tstg -55 150 ℃ 1
Collector-base breakdown voltage V(BR)CBO -50 V IC=-100µA,IE=0 2
Collector-emitter breakdown voltage V(BR)CEO -50 V IC=-5mA,IB=0 2
Emitter-base breakdown voltage V(BR)EBO -5 V IE=-100µA,IC=0 2
Collector cut-off current ICBO -1 µA VCB=-50V,IE=0 2
Emitter cut-off current IEBO -1 µA VEB=-3V,IC=0 2
DC current gain hFE(1) hFE(1) 100 VCE=-2V,IC=-20mA 2
DC current gain hFE(2) hFE(2) 100 400 VCE=-2V,IC=-1A 2
Collector-emitter saturation voltage VCE(sat) -0.5 V IC=-2A,IB=-200mA 2
Base-emitter saturation voltage VBE(sat) -2 V IC=-2A,IB=-200mA 2
Transition frequency fT 80 MHz VCE=-5V,IC=-100mA 2
Collector output capacitance Cob 45 pF VCB=-10V,IE=0,f=1MHz 2

CAD (KiCad official)

  • Symbol: 2SB776
  • Footprint: Package_TO_SOT_THT:TO-126-3_Vertical
  • 3D model: TO-126 (KiCad packages3D, STEP)
  • 3D model files: 2sb776-etched.step / 2sb776-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); 2sb776.step / 2sb776.glb are the bare package body.

Provenance

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

  • Datasheet: Changjing datasheet (3 pp, sha256 87c01f0d45602954, retrieved 2026-10-27, 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