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KTC3198-TA

Public Made by Adom

by adom

Changjing Bipolar (BJT), TO-92. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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KTC3198-TA

Changjing · Bipolar (BJT) · TO-92

KTC3198-TA from Changjing, in a TO-92. 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 NPN emitter terminal; the datasheet gives emitter-base breakdown V(BR)EBO of 5 V minimum and an emitter-base voltage rating of 5 V.
2 COLLECTOR passive NPN collector terminal; rated for 50 V collector-emitter voltage, 60 V collector-base voltage, 0.15 A continuous collector current, and 625 mW collector power dissipation.
3 BASE passive NPN base terminal; the datasheet's saturation test uses IB = 10 mA at IC = 100 mA, with VBE(sat) of 1 V maximum.

Key specifications

Parameter Value
Manufacturer Changjing
Package TO-92
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
Collector-base breakdown voltage V(BR)CBO 60 V IC= 0.1mA, 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=0.1mA, IC=0 2
Collector cut-off current ICBO 0.1 A VCB=60V, IE=0 2
Emitter cut-off current IEBO 0.1 A VEB=5V, IC=0 2
DC current gain hFE(1) hFE(1) 70 700 VCE=6V, IC=2mA 2
DC current gain hFE(2) hFE(2) 25 VCE=6V, IC=150mA 2
Collector-emitter saturation voltage VCE(sat) 0.25 V IC=100mA, IB=10mA 2
Base-emitter saturation voltage VBE(sat) 1 V IC=100mA, IB=10mA 2
Transition frequency fT 80 MHz VCE=10V, IC=1mA 2
Collector output capacitance Cob 3.5 pF VCB=10V, IE=0, f=1MHz 2
Collector-base voltage 60 V 1
Collector-emitter voltage 50 V 1
Emitter-base voltage 5 V 1
Collector current, continuous 0.15 A 1
Collector power dissipation 625 mW 1
Operation junction and storage temperature range TJ, Tstg -55 1
Thermal resistance from junction to ambient 200 /W 1

CAD (KiCad official)

  • Symbol: KTC3198-TA
  • Footprint: Package_TO_SOT_THT:TO-92_Inline
  • 3D model: TO-92 (KiCad packages3D, STEP)
  • 3D model files: ktc3198-ta-etched.step / ktc3198-ta-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ktc3198-ta.step / ktc3198-ta.glb are the bare package body.

Provenance

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

  • Datasheet: Changjing datasheet (5 pp, sha256 1ee2521aa48af614, retrieved 2026-10-18, 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