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2SD1899

Public Made by Adom

by adom

Changjing Bipolar (BJT), TO-252-2L. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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2SD1899

Changjing · Bipolar (BJT) · TO-252-2L

2SD1899 from Changjing, in a TO-252-2L. 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; emitter-base breakdown voltage V(BR)EBO is 7 V minimum and VEBO is rated at 7 V.
2 COLLECTOR passive Collector terminal of the NPN transistor, rated for VCBO 60 V, VCEO 60 V, IC 3 A and PC 1 W.
3 EMITTER passive Emitter terminal of the NPN transistor, with VEBO rated at 7 V.

Key specifications

Parameter Value
Manufacturer Changjing
Package TO-252-2L
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=100µA,IE=0 1
Collector-emitter breakdown voltage V(BR)CEO 60 V IC=1mA,IB=0 1
Emitter-base breakdown voltage V(BR)EBO 7 V IE=100µA,IC=0 1
Collector cut-off current ICBO 10 μA VCB=60V,IE=0 1
Emitter cut-off current IEBO 10 μA VEB=7V,IC=0 1
DC current gain hFE(1) 60 VCE=2V, IC=0.2A 1
DC current gain hFE(2) 100 400 VCE=2V, IC=0.6A 1
DC current gain hFE(3) 50 VCE=2V, IC=2A 1
Collector-emitter saturation voltage VCE(sat) 0.25 V IC=1.5A,IB=0.15A 1
Base-emitter saturation voltage VBE(sat) 1.2 V IC=1.5A,IB=0.15A 1
Collector output capacitance Cob 30 pF VCB=10V,IE=0, f=1MHz 1
Transition frequency fT 120 MHz VCE=5V,IC=1.5A 1
Collector-base voltage VCBO 60 V Ta=25℃ unless otherwise noted 1
Collector-emitter voltage VCEO 60 V Ta=25℃ unless otherwise noted 1
Emitter-base voltage VEBO 7 V Ta=25℃ unless otherwise noted 1
Collector current IC 3 A Ta=25℃ unless otherwise noted 1
Collector power dissipation PC 1 W Ta=25℃ unless otherwise noted 1
Junction temperature Tj 150 ℃ 1
Storage temperature Tstg -55 150 ℃ 1
Thermal resistance from junction to ambient RθJA 125 ℃/W 1

CAD (KiCad official)

  • Symbol: 2SD1899
  • Footprint: Package_TO_SOT_SMD:TO-252-2
  • 3D model: TO-252-2L (KiCad packages3D, STEP)
  • 3D model files: 2sd1899-etched.step / 2sd1899-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); 2sd1899.step / 2sd1899.glb are the bare package body.

Provenance

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

  • Datasheet: Changjing datasheet (4 pp, sha256 9fb91e52d3df10f4, 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