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AMMBT4403-HF

Public Made by Adom

by adom

Comchip Bipolar Transistors - BJT, SOT-23. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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AMMBT4403-HF

Comchip · Bipolar Transistors - BJT · SOT-23

AMMBT4403-HF from Comchip, in a SOT-23. 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 Base input Base of the PNP transistor; VEBO max is -5 V and the base-emitter saturation voltage is -0.95 V (typ. limit at IC=-150 mA) to -1.3 V max at IC=-500 mA.
2 Emitter passive Emitter of the PNP transistor; emitter-base voltage rating is -5 V.
3 Collector passive Collector of the PNP transistor; VCBO and VCEO are -40 V and continuous collector current is -600 mA.

Key specifications

Parameter Value
Manufacturer Comchip
Package SOT-23
Category Triode/MOS Tube/Transistor
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 -40 V Ta=25°C 1
Collector-emitter voltage VCEO -40 V Ta=25°C 1
Emitter-base voltage VEBO -5 V Ta=25°C 1
Collector current-continuous IC -600 mA Ta=25°C 1
Total device dissipation PD 300 mW Ta=25°C 1
Junction temperature range TJ -55 150 °C 1
Storage temperature range TSTG -55 150 °C 1
Thermal resistance junction to ambient RθJA 417 K/W 1
Collector-base breakdown voltage V(BR)CBO -40 V IC = -100μA, IE = 0 2
Collector-emitter breakdown voltage V(BR)CEO -40 V IC = -1mA, IB = 0 2
Emitter-base breakdown voltage V(BR)EBO -5 V IE = -100μA, IC = 0 2
Collector cut-off current ICEO -100 nA VCE = -35V, IB = 0 2
Base cut-off current IEBO -100 nA VCE = -4V, IC = 0 2
DC current gain hFE 100 300 VCE = -2V, IC = -150mA 2
Collector-emitter saturation voltage VCE(sat) -0.4 V IC = -150mA, IB = -15mA 2
Collector-emitter saturation voltage VCE(sat) -0.75 V IC = -500mA, IB = -50mA 2
Base-emitter saturation voltage VBE(sat) -0.95 V IC = -150mA, IB = -15mA 2
Base-emitter saturation voltage VBE(sat) -1.3 V IC = -500mA, IB = -50mA 2
Transition frequency fT 200 MHz VCE = -10V, IC = -20mA, f = 100MHZ 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: Tin plated leads, solderable per J-STD-002 and JESD22-B102. 1

CAD (KiCad official)

  • Symbol: AMMBT4403-HF
  • Footprint: Package_TO_SOT_SMD:SOT-23
  • 3D model: SOT-23 (KiCad packages3D, STEP)
  • 3D model files: ammbt4403-hf-etched.step / ammbt4403-hf-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ammbt4403-hf.step / ammbt4403-hf.glb are the bare package body.

Provenance

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

  • Datasheet: Comchip datasheet (5 pp, sha256 dac7fd345f7063bc, retrieved 2026-10-26, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-5-5 (text), consensus claude-sonnet-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