component
PESD0402MS18
Public Made by Adomby adom
TWGMC ESD And Surge Protection (TVS/ESD), 0402. 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
markdownPESD0402MS18
TWGMC · ESD And Surge Protection (TVS/ESD) · 0402
PESD0402MS18 from TWGMC, in a 0402. 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 | A | passive | One terminal of the bi-directional ESD suppressor, connected to the protected line; rated for 18 V maximum continuous operating voltage and ±8 kV contact / ±15 kV air ESD per IEC 61000-4-2. |
| 2 | B | passive | Second terminal of the bi-directional ESD suppressor, connected to ground or the return reference; the device is symmetric, with 0.05 pF typical capacitance and less than 100 nA leakage. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | TWGMC |
| Package | 0402 |
| Category | Circuit Protection |
| Pins | 2 |
CAD (KiCad official)
- Symbol:
PESD0402MS18 - Footprint:
Diode_SMD:D_0402_1005Metric - 3D model: 0402, generated from the KiCad footprint (body from the F.Fab outline, terminals on the pads, 0.4 mm nominal 0402 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:
pesd0402ms18-etched.step/pesd0402ms18-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);pesd0402ms18.step/pesd0402ms18.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: TWGMC datasheet (3 pp, sha256
d6084d19b1d32d5a, retrieved 2026-10-09, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-5-5(text+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).