component
AMMBT4403-HF
Public Made by Adomby adom
Comchip Bipolar Transistors - BJT, SOT-23. 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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Contents
README
markdownAMMBT4403-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.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ammbt4403-hf.step/ammbt4403-hf.glbare 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, primaryclaude-sonnet-5-5(text), consensusclaude-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).