component

CJ2045

Public Made by Adom

by adom

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

componenttriode-mos tube-transistorcj2045factory-2.0.0extractor-text
Overview Files Discover Packages Releases Dependencies Issues Breadcrumbs Pull Requests Activity
main
Download ZIP Propose a change
Generated by kicad-footprint-generator · KiCad file format 20260206
Name Last commit message Last updated
docs Publish 0.1.0 · Ray 13d ago
viewers cj2045: viewers · Ray 13d ago
cj2045-etched.glb Publish 0.1.0 · Ray 13d ago
cj2045-etched.step cj2045: factory component page (tier=lcsc) · Ray 13d ago
cj2045-hero.glb cj2045: hero GLB from the etched model (keeps the MPN mark) · Ray 13d ago
cj2045-hero.overlay.json Publish 0.1.0 · Ray 13d ago
cj2045.glb Publish 0.1.0 · Ray 13d ago
cj2045.kicad_mod Publish 0.1.0 · Ray 13d ago
cj2045.kicad_sym Publish 0.1.0 · Ray 13d ago
cj2045.lbr Publish 0.1.0 · Ray 13d ago
cj2045.step Publish 0.1.0 · Ray 13d ago
package.json Publish 0.1.0 · Ray 13d ago
page.json Set visibility: public · Ray 13d ago
README.md Publish 0.1.0 · Ray 13d ago

CJ2045

Changjing · Bipolar Transistors - BJT · SOT-23-6L

CJ2045 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 C1 passive Tr1 NPN collector, rated 40V VCBO, 30V VCEO and 1.5A continuous (5A peak).
2 B1 passive Tr1 NPN base, with emitter-base voltage limited to 7V.
3 C2 passive Tr2 PNP collector, rated -40V VCBO, -30V VCEO and -1.5A continuous (-5A peak).
4 E2 passive Tr2 PNP emitter, with emitter-base voltage limited to -7V.
5 B2 passive Tr2 PNP base, with emitter-base voltage limited to -7V.
6 E1 passive Tr1 NPN emitter, with emitter-base voltage limited to 7V.

Key specifications

Parameter Value
Manufacturer Changjing
Package SOT-23-6L
Category Triode/MOS Tube/Transistor
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 voltage (NPN Tr1) VCBO 40 V Ta=25℃ 1
Collector-base voltage (PNP Tr2) VCBO -40 V Ta=25℃ 1
Collector-emitter voltage (NPN Tr1) VCEX 40 V Ta=25℃ 1
Collector-emitter voltage (PNP Tr2) VCEX -40 V Ta=25℃ 1
Collector-emitter voltage (NPN Tr1) VCEO 30 V Ta=25℃ 1
Collector-emitter voltage (PNP Tr2) VCEO -30 V Ta=25℃ 1
Emitter-base voltage (NPN Tr1) VEBO 7 V Ta=25℃ 1
Emitter-base voltage (PNP Tr2) VEBO -7 V Ta=25℃ 1
Collector current continuous (NPN Tr1) IC 1.5 A Ta=25℃ 1
Collector current continuous (PNP Tr2) IC -1.5 A Ta=25℃ 1
Collector current peak (NPN Tr1) ICM 5 A Ta=25℃ 1
Collector current peak (PNP Tr2) ICM -5 A Ta=25℃ 1
Collector power dissipation (NPN Tr1) PC 350 mW Ta=25℃ 1
Collector power dissipation (PNP Tr2) PC 350 mW Ta=25℃ 1
Operating junction and storage temperature range TJ,Tstg -55 150 ℃ 1
Thermal resistance junction to ambient (NPN Tr1) RθJA 357 ℃/W Ta=25℃ 1
Thermal resistance junction to ambient (PNP Tr2) RθJA 357 ℃/W Ta=25℃ 1
Collector-base breakdown voltage (NPN Tr1) V(BR)CBO 40 V IC=100μA, IE=0 2
Collector-emitter breakdown voltage (NPN Tr1) V(BR)CEO 30 V IC=10mA, IB=0; pulse width≤300µs, duty cycle≤2% 2
Collector-emitter breakdown voltage (NPN Tr1) V(BR)CEX 40 V IC=1μA, VBE(off)=-0.5V 2
Emitter-base breakdown voltage (NPN Tr1) V(BR)EBO 7 V IE=100μA, IC=0 2
Collector cut-off current (NPN Tr1) ICBO 20 nA VCB=32V, IE=0 2
Collector cut-off current ICER (NPN Tr1) ICER 20 nA VCE=16V, R≤1kΩ 2
Emitter cut-off current (NPN Tr1) IEBO 20 nA VEB=6V, IC=0 2
DC current gain (NPN Tr1) hFE 180 500 VCE=2V, IC=100mA; pulse width≤300µs, duty cycle≤2% 2
Collector-emitter saturation voltage (NPN Tr1) VCE(sat) 0.375 V 2
Base-emitter saturation voltage (NPN Tr1) VBE(sat) 1.2 V IC=750mA, IB=15mA; pulse width≤300µs, duty cycle≤2% 2
Collector-base breakdown voltage (PNP Tr2) V(BR)CBO -40 V IC=-100μA, IE=0 2
Collector-emitter breakdown voltage (PNP Tr2) V(BR)CEO -30 V IC=-10mA, IB=0; pulse width≤300µs, duty cycle≤2% 2
Collector-emitter breakdown voltage (PNP Tr2) V(BR)CEX -40 V IC=-1μA, VBE(off)=0.5V 2
Emitter-base breakdown voltage (PNP Tr2) V(BR)EBO -7 V IE=-100μA, IC=0 2
Collector cut-off current (PNP Tr2) ICBO -20 nA VCB=-32V, IE=0 2
Collector cut-off current ICER (PNP Tr2) ICER -20 nA VCE=-16V, R≤1kΩ 2
Emitter cut-off current (PNP Tr2) IEBO -20 nA VEB=-6V, IC=0 2
DC current gain (PNP Tr2) hFE 180 500 VCE=-2V, IC=-100mA; pulse width≤300µs, duty cycle≤2% 2
Collector-emitter saturation voltage (PNP Tr2) VCE(sat) -0.375 V 2
Base-emitter saturation voltage (PNP Tr2) VBE(sat) -1.2 V IC=-750mA, IB=-15mA; pulse width≤300µs, duty cycle≤2% 2

CAD (KiCad official)

  • Symbol: CJ2045
  • Footprint: Package_TO_SOT_SMD:SOT-23-6
  • 3D model: SOT-23-6L (KiCad packages3D, STEP)
  • 3D model files: cj2045-etched.step / cj2045-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); cj2045.step / cj2045.glb are the bare package body.

Provenance

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

  • Datasheet: Changjing datasheet (6 pp, sha256 942cf8152e0fbb84, retrieved 2026-10-21, 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