component
2SA2018
Public Made by Adomby adom
Changjing Bipolar (BJT), SOT-523. 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
markdown2SA2018
Changjing · Bipolar (BJT) · SOT-523
2SA2018 from Changjing, in a SOT-523. 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 | passive | Base terminal of the 2SA2018 PNP transistor, with emitter-base breakdown of -6 V (min) at IE = -10 µA and VEBO rated at -6 V. |
| 2 | EMITTER | passive | Emitter terminal of the 2SA2018 PNP transistor, rated with VEBO of -6 V and IC continuous of -0.5 A for the device. |
| 3 | COLLECTOR | passive | Collector terminal of the 2SA2018 PNP transistor, rated with VCBO of -15 V, VCEO of -12 V and IC continuous of -0.5 A for the device. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Changjing |
| Package | SOT-523 |
| Category | Transistors/Thyristors |
| Pins | 3 |
CAD (KiCad official)
- Symbol:
2SA2018 - Footprint:
Package_TO_SOT_SMD:SOT-523 - 3D model: SOT-523, generated from the KiCad footprint (body from the F.Fab outline, terminals on the pads, 0.8 mm nominal SOT-523 height). Neither the vendor nor KiCad ships a 3D model for this package, so the dimensions are nominal, not the manufacturer's CAD (STEP)
- 3D model files:
2sa2018-etched.step/2sa2018-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);2sa2018.step/2sa2018.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Changjing datasheet (4 pp, sha256
b81c8fdf4b5e81ce, retrieved 2026-10-09, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-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).