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CJ818B

Public Made by Adom

by adom

Changjing Bipolar (BJT), SOT-23-6L. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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3D Model

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Symbol & Footprint

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Datasheet

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Contents

README

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CJ818B

Changjing · Bipolar (BJT) · SOT-23-6L

CJ818B from Changjing, in a SOT-23-6L. 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 C passive Collector, tied internally to pins 2, 5 and 6; Vceo -30 V, Ic -3 A continuous.
2 C passive Collector, tied internally to pins 1, 5 and 6; Vceo -30 V, Ic -3 A continuous.
3 B passive Base; Vebo -5 V maximum emitter-base voltage.
4 E passive Emitter of the PNP transistor; Vebo -5 V.
5 C passive Collector, tied internally to pins 1, 2 and 6; Vcbo -30 V.
6 C passive Collector, tied internally to pins 1, 2 and 5; Vcbo -30 V.

Key specifications

Parameter Value
Manufacturer Changjing
Package SOT-23-6L
Category Transistors/Thyristors
Pins 6

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 V(BR)CBO -30 V IC=-100μA,IE=0 2
Collector-emitter breakdown voltage V(BR)CEO -30 V IC=-10mA,IB=0 2
Emitter-base breakdown voltage V(BR)EBO -5 V IE=-100μA,IC=0 2
Collector cut-off current ICBO -0.1 μA VCB=-30V,IE=0 2
Emitter cut-off current IEBO -0.1 μA VEB=-5V,IC=0 2
DC current gain hFE 100 VCE=-1V, IC=-0.5A 2
Collector-emitter saturation voltage VCE(sat) -0.15 V IC=-0.5A,IB=-5mA 2
Collector-emitter saturation voltage VCE(sat) -0.45 V IC=-1.2A,IB=-12mA 2
Collector-emitter saturation voltage VCE(sat) -0.8 V IC=-2A,IB=-20mA 2
Base-emitter saturation voltage VBE(sat) -1.1 V IC=-0.5A,IB=-5mA 2
Base-emitter saturation voltage VBE(sat) -1.2 V IC=-2A,IB=-20mA 2
Base-emitter on voltage VBE(on) -1.1 V IC=-0.5A, VCE=-2V 2
Collector-base voltage (maximum rating) VCBO -30 V 1
Collector-emitter voltage (maximum rating) VCEO -30 V 1
Emitter-base voltage (maximum rating) VEBO -5 V 1
Collector current, continuous IC -3 A Continuous 1
Collector dissipation PC 0.35 W 1
Total dissipation Ptot 1.2 W TC = 25℃ 1
Operation junction and storage temperature range TJ,Tstg -55 150 ℃ 1
Thermal resistance, junction to ambient RθJA 357 ℃/W 1
Thermal resistance, junction to case RθJC 104.2 ℃/W Package mounted on FR4 pcb 25mm x 25mm (note 1) 1

CAD (KiCad official)

  • Symbol: CJ818B
  • Footprint: Package_TO_SOT_SMD:SOT-23-6
  • 3D model: SOT-23-6L (KiCad packages3D, STEP)
  • 3D model files: cj818b-etched.step / cj818b-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); cj818b.step / cj818b.glb are the bare package body.

Provenance

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

  • Datasheet: Changjing datasheet (5 pp, sha256 ddb191db125b5795, retrieved 2026-10-17, tier: lcsc)
  • 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