component

FCX493TA

Public Made by Adom

by adom

Diodes Incorporated Bipolar (BJT), SOT-89. Pinout cross-checked by two models 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

FCX493TA

Diodes Incorporated · Bipolar (BJT) · SOT-89

FCX493TA 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; the top-view pin-out shows it as the bottom pin on the lead side opposite the collector tab.
2 C passive Collector (middle lead, electrically common with the collector tab); VCEO 100V, IC 1A continuous, 2A peak.
3 E passive Emitter of the NPN transistor; VEBO rating is 7V.

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 Breakdown Voltage BVCBO 120 V IC = 100µA 3
Collector-Emitter Breakdown Voltage BVCEO 100 V IC = 1mA 3
Emitter-Base Breakdown Voltage BVEBO 7 V IE = 100µA 3
Collector Cutoff Current ICBO 100 nA VCB = 100V 3
Emitter Cutoff Current IEBO 100 nA VEB = 5V 3
DC Current Transfer Static Ratio hFE 100 IC = 1mA, VCE = 10V 3
DC Current Transfer Static Ratio hFE 60 IC = 500mA, VCE = 10V 3
DC Current Transfer Static Ratio hFE 20 IC = 1A, VCE = 10V 3
Collector-Emitter Saturation Voltage VCE(sat) 0.3 V IC = 500mA, IB = 50mA 3
Collector-Emitter Saturation Voltage VCE(sat) 0.6 V IC = 1A, IB = 100mA 3
Base-Emitter Saturation Voltage VBE(sat) 1.15 V IC = 1A, IB = 100mA 3
Base-Emitter Turn-On Voltage VBE(on) 1 V IC = 1A, VCE = 10V 3
Transitional Frequency fT 150 MHz IC = 50mA, VCE = 10V, f = 100MHz 3
Output Capacitance Cobo 10 pF VCB = 10V, f = 1MHz 3
Collector-Base Voltage VCBO 120 V 2
Collector-Emitter Voltage VCEO 100 V 2
Emitter-Base Voltage VEBO 7 V 2
Continuous Collector Current IC 1 A 2
Peak Pulse Current ICM 2 A 2
Continuous Base Current IB 200 mA 2
Collector Power Dissipation PD 1 W Note 5: device mounted on 15mm x 15mm x 1.6mm FR4 PCB, high coverage single sided 1oz copper, still air 2
Operating and Storage Temperature Range TJ, TSTG -65 150 C 2
Thermal Resistance, Junction to Ambient Air RθJA 125 C/W Note 5: device mounted on 15mm x 15mm x 1.6mm FR4 PCB, high coverage single sided 1oz copper, still air 2
Thermal Resistance, Junction to Case RθJC 16 C/W Note 6: junction to the top of the case 2
Thermal Resistance, Junction to Leads RθJL 10.01 C/W Note 7: junction to solder-point (on the exposed collector pad) 2

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, Solderable per MIL-STD-202, Method 208 1

CAD (KiCad official)

  • Symbol: FCX493TA
  • Footprint: Package_TO_SOT_SMD:SOT-89-3
  • 3D model: SOT-89 (KiCad packages3D, STEP)
  • 3D model files: fcx493ta-etched.step / fcx493ta-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); fcx493ta.step / fcx493ta.glb are the bare package body.

Provenance

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

  • Datasheet: Diodes Incorporated datasheet (6 pp, sha256 f0d62818ea460f16, 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