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BCX53-16U

Public Made by Adom

by adom

ST Semtech Schottky Diodes, SOT-89. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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BCX53-16U

ST Semtech · Schottky Diodes · SOT-89

BCX53-16U from ST Semtech, in a SOT-89. 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; limits are -VEBO 5 V max and -VCBO 100 V max, with hFE of 100 min to 250 max for the BCX53-16U at -VCE = 2 V, -IC = 150 mA.
2 C passive Collector (also the SOT-89 tab); -VCEO 80 V max, -IC 1 A continuous and -ICM 2 A peak, with -VCE(sat) 0.5 V max at -IC = 500 mA, -IB = 50 mA.
3 E passive Emitter of the PNP transistor; -VEBO is 5 V max relative to the base.

Key specifications

Parameter Value
Manufacturer ST Semtech
Package SOT-89
Category Diodes
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
DC current gain (5 mA) hFE 63 at -VCE = 2 V, -IC = 5 mA (BCX53-16U) 2
DC current gain (150 mA) hFE 100 250 at -VCE = 2 V, -IC = 150 mA (BCX53-16U) 2
DC current gain (500 mA) hFE 25 at -VCE = 2 V, -IC = 500 mA 2
Collector Base Cutoff Current -ICBO 100 nA at -VCB = 64 V 2
Emitter Base Cutoff Current -IEBO 100 nA at -VEB = 5 V 2
Collector Base Breakdown Voltage -V(BR)CBO 100 V at -IC = 100 µA 2
Collector Emitter Breakdown Voltage -V(BR)CEO 80 V at -IC = 1 mA 2
Emitter Base Breakdown Voltage -V(BR)EBO 5 V at -IE = 100 µA 2
Collector Emitter Saturation Voltage VCE(sat) 0.5 V at -IC = 500 mA, -IB = 50 mA 2
Base Emitter Voltage VBE 1 V at -VCE = 2 V, -IC = 500 mA 2
Collector Cutoff Current -ICEO 1 µA at -VCE = 64 V, IB = 0, Ta = 65℃, 90%RH 2
Total Power Dissipation (note 1) Ptot 0.5 W Ta = 25℃; FR4 PCB, single-sided copper, tin-plated, standard footprint 1
Total Power Dissipation (note 2) Ptot 1.3 W Ta = 25℃; FR4 PCB, single-sided copper, tin-plated, mounting pad for collector 6 cm2 1
Peak Collector Current -ICM 2 A Ta = 25℃ 1
Collector Current -IC 1 A Ta = 25℃ 1
Collector Base Voltage -VCBO 100 V Ta = 25℃ 1
Collector Emitter Voltage -VCEO 80 V Ta = 25℃ 1
Emitter Base Voltage -VEBO 5 V Ta = 25℃ 1
Junction Temperature Tj 150 ℃ 1
Storage Temperature Range Tstg -65 150 ℃ 1

CAD (KiCad official)

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

Provenance

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

  • Datasheet: ST Semtech datasheet (4 pp, sha256 611faa92ba5aac2b, retrieved 2026-10-19, 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