component
PESD3V3S1BA
Public Made by Adomby adom
TDSEMIC ESD And Surge Protection (TVS/ESD), 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
markdownPESD3V3S1BA
TDSEMIC · ESD And Surge Protection (TVS/ESD) · SOT-523
PESD3V3S1BA from TDSEMIC, 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 | 1 | passive | Bidirectional ESD protection diode terminal 1 (leaded, protects one signal line); reverse working voltage 3.3V max, breakdown 5.6V to 7.8V at IT=1mA. |
| 2 | 2 | passive | Bidirectional ESD protection diode terminal 2 (leaded, protects one signal line); reverse working voltage 3.3V max, clamping voltage 11.0V max at IPP=4A, 8/20µs. |
| 3 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | TDSEMIC |
| Package | SOT-523 |
| Category | Circuit Protection |
| Pins | 3 |
CAD (KiCad official)
- Symbol:
PESD3V3S1BA - 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:
pesd3v3s1ba-etched.step/pesd3v3s1ba-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);pesd3v3s1ba.step/pesd3v3s1ba.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: TDSEMIC datasheet (4 pp, sha256
621657ec8863f569, retrieved 2026-10-09, tier: lcsc) - Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- 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).