component
ESDA37W
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.
Generated by kicad-footprint-generator · KiCad file format 20260206
| Name | Last updated |
|---|---|
| docs | 17d ago |
| viewers | 17d ago |
| esda37w-etched.glb | 17d ago |
| esda37w-etched.step | 17d ago |
| esda37w-hero.glb | 17d ago |
| esda37w-hero.overlay.json | 17d ago |
| esda37w.glb | 17d ago |
| esda37w.kicad_mod | 17d ago |
| esda37w.kicad_sym | 17d ago |
| esda37w.lbr | 17d ago |
| esda37w.step | 17d ago |
| package.json | 17d ago |
| page.json | 17d ago |
| README.md | 17d ago |
ESDA37W
STMicroelectronics · ESD And Surge Protection (TVS/ESD) · SOT-323-3
ESDA37W 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 | Protected line 1 connected to the cathode of the first unidirectional Transil diode, with 36 V stand-off voltage (VRM) and 37 V min breakdown voltage; it can be used with pin 2 as a bidirectional suppressor. |
| 2 | I/O2 | passive | Protected line 2 connected to the cathode of the second unidirectional Transil diode, with 36 V stand-off voltage (VRM) and 37 V min breakdown voltage; it can be used with pin 1 as a bidirectional suppressor. |
| 3 | COMMON | passive | Common anode of both Transil diodes, normally connected to ground (the functional diagram shows no pin name). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | STMicroelectronics |
| Package | SOT-323-3 |
| Category | Circuit Protection |
| Pins | 3 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Operating junction temperature range | Tj | -40 | 150 | °C | 2 | ||
| Storage junction temperature range | Tstg | -65 | 150 | °C | 2 | ||
| Peak pulse voltage (IEC 61000-4-2 contact discharge) | Vpp | 30 | kV | IEC 61000-4-2 contact discharge | 2 | ||
| Peak pulse voltage (IEC 61000-4-2 air discharge) | Vpp | 30 | kV | IEC 61000-4-2 air discharge | 2 | ||
| Peak pulse power | Ppp | 300 | W | 8/20 µs | 2 | ||
| Peak pulse current (ESDA37W) | Ipp | 6.3 | A | 8/20 µs | 2 | ||
| Maximum lead temperature for soldering | TL | 260 | °C | during 10 s at 5 mm from case | 2 | ||
| Breakdown voltage (min) | VBR | 37 | V | IR = 1 mA, Tamb = 25 °C | 2 | ||
| Breakdown voltage (max) | VBR | 43.3 | V | IR = 1 mA, Tamb = 25 °C | 2 | ||
| Leakage current | IRM | 1 | µA | VRM = 36 V, Tamb = 25 °C | 2 | ||
| Dynamic impedance | Rd | 2400 | mΩ | Square pulse Ipp = 15 A, tp = 2.5 µs | 2 | ||
| Forward voltage drop | VF | 0.9 | V | IF = 10 mA, Tamb = 25 °C | 2 | ||
| Voltage temperature coefficient | αT | 11 | 10-4/°C | 2 | |||
| Line capacitance | Cline | 48 | pF | at 0 V bias, Tamb = 25 °C | 2 |
CAD (KiCad official)
- Symbol:
ESDA37W - Footprint:
Package_TO_SOT_SMD:SOT-323_SC-70 - 3D model: SOT-323-3 (KiCad packages3D, STEP)
- 3D model files:
esda37w-etched.step/esda37w-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);esda37w.step/esda37w.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: STMicroelectronics datasheet (10 pp, sha256
c5901c48288c0431, retrieved 2026-10-16, 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).