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BCX56TA

Public Made by Adom

by adom

Diodes Incorporated Bipolar (BJT), SOT-89. Pinout reviewed by a person against the datasheet, KiCad symbol/footprint/3D.

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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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Contents

README

markdown

BCX56TA

Diodes Incorporated · Bipolar (BJT) · SOT-89

BCX56TA from Diodes Incorporated, 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 of the NPN transistor; drive terminal, with IB max 100mA continuous and 200mA peak, VEBO 6V.
2 C passive Collector, also connected to the exposed tab; BCX56 VCEO 80V, VCBO 100V, IC 1A continuous and 2A peak.
3 E passive Emitter of the NPN transistor; VEBO max 6V.

Key specifications

Parameter Value
Manufacturer Diodes Incorporated
Package SOT-89
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 BCX56 column 2
Collector-Emitter Voltage VCEO 80 V BCX56 column 2
Emitter-Base Voltage VEBO 6 V 2
Continuous Collector Current IC 1 A 2
Peak Pulse Collector Current ICM 2 A 2
Continuous Base Current IB 100 mA 2
Peak Pulse Base Current IBM 200 mA 2
Operating and Storage Temperature Range TJ, TSTG -55 150 °C 2
Electrostatic Discharge - Human Body Model ESD HBM 4000 V JEDEC class 3A; printed as 4,000 V 2
Electrostatic Discharge - Machine Model ESD MM 400 V JEDEC class C 2
Power Dissipation PD 0.55 W Note 5: minimum recommended pad layout, 1oz Cu, single-sided 1.6mm FR4, still air 2
Power Dissipation PD 1 W Note 6: exposed collector pad on 15mm x 15mm 1oz Cu, still air 2
Power Dissipation PD 1.5 W Note 7: 25mm x 25mm 1oz Cu, still air 2
Power Dissipation PD 2 W Note 8: 50mm x 50mm 1oz Cu, still air 2
Thermal Resistance, Junction to Ambient Air RθJA 225 °C/W Note 5: minimum recommended pad layout, 1oz Cu 2
Thermal Resistance, Junction to Ambient Air RθJA 125 °C/W Note 6: 15mm x 15mm 1oz Cu 2
Thermal Resistance, Junction to Ambient Air RθJA 83 °C/W Note 7: 25mm x 25mm 1oz Cu 2
Thermal Resistance, Junction to Ambient Air RθJA 60 °C/W Note 8: 50mm x 50mm 1oz Cu 2
Thermal Resistance, Junction to Lead RθJL 13 °C/W Note 9: junction to solder-point on exposed collector pad 2
Thermal Resistance, Junction to Case RθJC 39 °C/W Notes 5 & 10 2
Thermal Resistance, Junction to Case RθJC 27 °C/W Note 10: junction to top of case 2
Collector-Base Breakdown Voltage BVCBO 100 V BCX56; IC = 100µA 4
Collector-Emitter Breakdown Voltage BVCEO 80 V BCX56; IC = 10mA (Note 12) 4
Emitter-Base Breakdown Voltage BVEBO 6 V IE = 100µA 4
Collector Cutoff Current ICBO 0.1 µA VCB = 30V 4
Collector Cutoff Current ICBO 20 µA VCB = 30V, TA = +150°C 4
Emitter Cutoff Current IEBO 20 nA VEB = 5V 4
Static Forward Current Transfer Ratio (All versions) hFE 25 IC = 5mA, VCE = 2V (Note 12) 4
Static Forward Current Transfer Ratio (All versions) hFE 40 IC = 150mA, VCE = 2V (Note 12) 4
Collector-Emitter Saturation Voltage VCE(sat) 0.5 V IC = 500mA, IB = 50mA (Note 12) 4
Base-Emitter Turn-On Voltage VBE(on) 1 V IC = 500mA, VCE = 2V (Note 12) 4
Transition Frequency fT 150 MHz IC = 50mA, VCE = 10V, f = 100MHz 4
Output Capacitance Cobo 25 pF VCB = 10V, f = 1MHz 4

Materials and finish

As the datasheet states them (page.json metadata.appearance; the 3D model's colours follow it).

Part Material Colour / plating Datasheet says Page
contacts tin • Terminals: Matte Tin Finish Leads. Solderable per MIL-STD-202 Method 208 1

CAD (KiCad official)

  • Symbol: BCX56TA
  • Footprint: Package_TO_SOT_SMD:SOT-89-3
  • 3D model: SOT-89 (KiCad packages3D, STEP)
  • 3D model files: bcx56ta-etched.step / bcx56ta-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); bcx56ta.step / bcx56ta.glb are the bare package body.

Provenance

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

  • Datasheet: Diodes Incorporated datasheet (7 pp, sha256 f1fb713b16b386bf, retrieved 2026-10-21, tier: lcsc)
  • Extractor: ds2sf (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF