component
MMBTA55-JSM
Public Made by Adomby adom
JSMSEMI Bipolar (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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README
markdownMMBTA55-JSM
JSMSEMI · Bipolar (BJT) · SOT-23
MMBTA55-JSM from JSMSEMI, 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; V(BR)EBO is -4.0 V min and VEBO max is -4.0 V. |
| 2 | EMITTER | passive | Emitter of the PNP transistor, shown with the arrow pointing into the device in the symbol. |
| 3 | COLLECTOR | passive | Collector of the PNP transistor; VCEO is -60 V for MMBTA55 and IC max is -500 mA. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | JSMSEMI |
| Package | SOT-23 |
| Category | Transistors/Thyristors |
| Pins | 3 |
CAD (KiCad official)
- Symbol:
MMBTA55-JSM - Footprint:
Package_TO_SOT_SMD:SOT-23 - 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files:
mmbta55-jsm-etched.step/mmbta55-jsm-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);mmbta55-jsm.step/mmbta55-jsm.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: JSMSEMI datasheet (3 pp, sha256
98402a7763111b22, retrieved 2026-10-19, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-5-5(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).