component
ESDA37WY
Public Made by Adomby adom
STMicroelectronics ESD And Surge Protection (TVS/ESD), SOT-323-3. 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
markdownESDA37WY
STMicroelectronics · ESD And Surge Protection (TVS/ESD) · SOT-323-3
ESDA37WY from STMicroelectronics, in a SOT-323-3. 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 | I/O1 | passive | ESD protection cathode 1 of the dual-line unidirectional TVS; for ESDA37WY the minimum breakdown voltage VBR is 36 V and the maximum leakage IRM is 0.1 µA. |
| 2 | I/O2 | passive | ESD protection cathode 2 of the dual-line unidirectional TVS; for ESDA37WY the minimum breakdown voltage VBR is 36 V and the maximum leakage IRM is 0.1 µA. |
| 3 | GND | power_in | Common anode of both protection diodes, to be connected to ground; forward conduction runs from GND to the I/O pins. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | STMicroelectronics |
| Package | SOT-323-3 |
| Category | Circuit Protection |
| Pins | 3 |
CAD (KiCad official)
- Symbol:
ESDA37WY - Footprint:
Package_TO_SOT_SMD:SOT-323_SC-70 - 3D model: SOT-323-3 (KiCad packages3D, STEP)
- 3D model files:
esda37wy-etched.step/esda37wy-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);esda37wy.step/esda37wy.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: STMicroelectronics datasheet (18 pp, sha256
5a58bc16bd84527f, retrieved 2026-10-13, tier: manufacturer) - 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).