component

KTC4377

Public Made by Adom

by adom

Changjing Bipolar Transistors - BJT, SOT-89-3L. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

componenttriode-mos tube-transistorktc4377factory-2.0.0extractor-text
Overview Files Discover Packages Releases Dependencies Issues Breadcrumbs Pull Requests Activity
main
Download ZIP Propose a change
Made with KiCad 10.0 · needs KiCad 10.0 or later to open · KiCad file format 20260206
Name Last commit message Last updated
docs Publish 0.1.0 · Ray 1d ago
viewers ktc4377: viewers · Ray 1d ago
ktc4377-etched.glb Publish 0.1.0 · Ray 1d ago
ktc4377-etched.step ktc4377: factory component page (tier=lcsc) · Ray 1d ago
ktc4377-hero.glb ktc4377: hero GLB from the etched model (keeps the MPN mark) · Ray 1d ago
ktc4377-hero.overlay.json Publish 0.1.0 · Ray 1d ago
ktc4377.glb Publish 0.1.0 · Ray 1d ago
ktc4377.kicad_mod Publish 0.1.0 · Ray 1d ago
ktc4377.kicad_sym Publish 0.1.0 · Ray 1d ago
ktc4377.lbr Publish 0.1.0 · Ray 1d ago
ktc4377.step Publish 0.1.0 · Ray 1d ago
package.json Publish 0.1.0 · Ray 1d ago
page.json Set visibility: public · Ray 1d ago
README.md Publish 0.1.0 · Ray 1d ago

KTC4377

Changjing · Bipolar Transistors - BJT · SOT-89-3L

KTC4377 from Changjing, in a SOT-89-3L. 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 input Base terminal of the NPN transistor; the datasheet gives a 6 V emitter-base voltage rating (VEBO) and a 6 V minimum emitter-base breakdown voltage at IE=1mA.
2 COLLECTOR passive Collector terminal; the datasheet gives a 30 V collector-base voltage rating (VCBO) and a 2 A maximum continuous collector current (IC).
3 EMITTER passive Emitter terminal; the datasheet gives a 10 V collector-emitter voltage rating (VCEO) and a 0.5 W collector power dissipation (PC) for the device.

Key specifications

Parameter Value
Manufacturer Changjing
Package SOT-89-3L
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 breakdown voltage V(BR)CBO 30 V IC=1mA,IE=0 1
Collector-emitter breakdown voltage V(BR)CEO 10 V IC=10mA,IB=0 1
Emitter-base breakdown voltage V(BR)EBO 6 V IE=1mA,IC=0 1
Collector cut-off current ICBO 0.1 μA VCB=30V,IE=0 1
Emitter cut-off current IEBO 0.1 μA VEB=6V,IC=0 1
DC current gain (rank range, classification hFE(1)) hFE(1) 140 600 VCE=1V,IC=0.5A 1
DC current gain hFE(2) 70 VCE=1V,IC=2A 1
Collector-emitter saturation voltage VCE(sat) 0.5 V IC=2A,IB=50mA 1
Base-emitter voltage VBE 1.5 V VCE=1V,IC=2A 1
Transition frequency fT 150 MHz VCE=1V,IC=0.5A 1
Collector output capacitance Cob 27 pF VCB=10V,IE=0,f=1MHz 1
Collector-base voltage VCBO 30 V Ta=25℃ 1
Collector-emitter voltage VCEO 10 V Ta=25℃ 1
Emitter-base voltage VEBO 6 V Ta=25℃ 1
Collector current, continuous IC 2 A Ta=25℃ 1
Collector power dissipation PC 0.5 W Ta=25℃ 1
Operation junction and storage temperature range TJ,Tstg -55 150 ℃ 1

CAD (KiCad official)

  • Symbol: KTC4377
  • Footprint: Package_TO_SOT_SMD:SOT-89-3
  • 3D model: SOT-89-3L (KiCad packages3D, STEP)
  • 3D model files: ktc4377-etched.step / ktc4377-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ktc4377.step / ktc4377.glb are the bare package body.

Provenance

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

  • Datasheet: Changjing datasheet (4 pp, sha256 1b5e693de68ad8bf, retrieved 2026-11-05, 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