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BCX53-16U
Public Made by Adomby adom
ST Semtech Schottky Diodes, SOT-89. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownBCX53-16U
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.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);bcx53-16u.step/bcx53-16u.glbare 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, primaryclaude-sonnet-5-5(text+vision), consensusclaude-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).