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BCX53-16-2AF

FOSAN · Bipolar (BJT) · SOT-89-3L

BCX53-16-2AF from FOSAN, 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 B input Base; emitter-base voltage VEBO max -5 V.
2 C passive Collector (also the SOT-89 tab); VCBO -100 V, VCEO -80 V for BCX53, continuous collector current IC -1000 mA.
3 E passive Emitter of the PNP transistor; power dissipation 500 mW at Ta=25℃.

Key specifications

Parameter Value
Manufacturer FOSAN
Package SOT-89-3L
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 Voltage VCBO -100 V BCX53 column 1
Collector-Emitter Voltage VCEO -80 V BCX53 column 1
Emitter-Base Voltage VEBO -5 V 1
Collector Current IC -1000 mA 1
Power dissipation PC 500 mW Ta=25℃ 1
Thermal Resistance Junction-Ambient RΘJA 250 ℃/W 1
Junction and Storage Temperature TJ,Tstg -55 150 ℃ 1
Collector-Base Breakdown Voltage BVCBO -100 V IC= -100uA, IE=0; BCX53 column 2
Collector-Emitter Breakdown Voltage BVCEO -80 V IC= -10mA, IB=0; BCX53 column 2
Emitter-Base Breakdown Voltage BVEBO -5 V IE= -100uA, IC=0 2
Collector-Base Leakage Current ICBO -100 nA VCB= -80V, IE=0; BCX53 column 2
Emitter-Base Leakage Current IEBO -100 nA VEB= -5V, IC=0 2
DC Current Gain HFE(1) 63 VCE= -2V, IC= -5mA 2
DC Current Gain HFE(2) 100 250 VCE= -2V, IC= -0.15A; BCX53-16-2AF column 2
DC Current Gain HFE(3) 40 VCE= -2V, IC= -0.5A 2
Collector-Emitter Saturation Voltage VCE(sat) -0.5 V IC= -0.5A, IB= -50mA 2
Base-Emitter Saturation Voltage VBE(sat) -1 V IC= -500mA, IB= -50mA 2
Base-Emitter On Voltage VBE(on) -1 V VCE= -2V, IC= -0.5A 2

CAD (KiCad official)

  • Symbol: BCX53-16-2AF
  • Footprint: Package_TO_SOT_SMD:SOT-89-3
  • 3D model: SOT-89-3L (KiCad packages3D, STEP)
  • 3D model files: bcx53-16-2af-etched.step / bcx53-16-2af-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); bcx53-16-2af.step / bcx53-16-2af.glb are the bare package body.

Provenance

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

  • Datasheet: FOSAN datasheet (4 pp, sha256 fad52eeecdac6b1d, retrieved 2026-10-21, tier: lcsc)
  • Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
  • 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