component
ESDA25LY
Public Made by Adomby adom
STMicroelectronics ESD And Surge Protection (TVS/ESD), SOT-23-3. 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
markdownESDA25LY
STMicroelectronics · ESD And Surge Protection (TVS/ESD) · SOT-23-3
ESDA25LY from STMicroelectronics, in a SOT-23-3. 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 | IO1 | passive | Anode of unidirectional TVS diode 1; ESD-protected signal line with VBR 25-30 V, IRM max 1 µA at VRM = 24 V, Cline 50 pF typ at 0 V bias, Ipp max 7 A (8/20 µs); when only pins 1 and 2 are used device acts as bidirectional suppressor. |
| 2 | IO2 | passive | Anode of unidirectional TVS diode 2; second ESD-protected signal line sharing identical electrical characteristics (VBR 25-30 V, Cline 50 pF typ, Ipp max 7 A at 8/20 µs); cathode tied to pin 3. |
| 3 | GND | power_in | Common cathode of both TVS diodes; connects to the ground reference plane; peak pulse power into this node 300 W (8/20 µs), operating junction temperature -40 to +150 °C. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | STMicroelectronics |
| Package | SOT-23-3 |
| Category | Circuit Protection |
| Pins | 3 |
CAD (KiCad official)
- Symbol:
ESDA25LY - Footprint:
Package_TO_SOT_SMD:SOT-23-3 - 3D model: SOT-23-3 (KiCad packages3D, STEP)
- 3D model files:
esda25ly-etched.step/esda25ly-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);esda25ly.step/esda25ly.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: STMicroelectronics datasheet (12 pp, sha256
f99725629ff69da5, retrieved 2026-10-01, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.2, primaryclaude-sonnet-4-6(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).