component
ESDA041-2W3Y
Public Made by Adomby adom
STMicroelectronics ESD Protection Devices, 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
markdownESDA041-2W3Y
STMicroelectronics · ESD Protection Devices · SOT-323-3
ESDA041-2W3Y 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 | K1 | passive | Cathode of the first unidirectional TVS diode (line 1 to be protected), with VRM 3.6 V, VBR 6.2 V min at 1 mA and VCL max 9 V at IPP 7 A (8/20 µs). |
| 2 | A2 | passive | Anode of the second TVS diode, the lower connection of the two-cell stack, with the same 3.6 V stand-off and 6.2 V min breakdown ratings. |
| 3 | A1/K2 | passive | Common node joining the anode of the first TVS diode and the cathode of the second, on the single-lead side of the package. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | STMicroelectronics |
| Package | SOT-323-3 |
| Category | TVS/Fuse/Board Level 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 |
|---|---|---|---|---|---|---|---|
| Reverse leakage current at VR, 25 °C | IRM | 0.05 | µA | VR = 3.6 V, Tamb = 25 °C | 2 | ||
| Reverse leakage current at VR, 85 °C | IRM | 0.1 | µA | VR = 3.6 V, Tamb = 85 °C | 2 | ||
| Reverse leakage current at VRM, 25 °C | IRM | 0.1 | µA | VRM = 4 V, Tamb = 25 °C | 2 | ||
| Reverse leakage current at VRM, 85 °C | IRM | 0.2 | µA | VRM = 4 V, Tamb = 85 °C | 2 | ||
| Breakdown voltage | VBR | 6.2 | 6.5 | 6.8 | V | at 1 mA | 2 |
| Forward voltage | VF | 0.78 | 0.9 | V | at 10 mA | 2 | |
| Clamping voltage | VCL | 9 | V | 8/20 µs, IPP = 7 A | 2 | ||
| Peak pulse current (test) | IPP | 7 | A | 8/20 µs | 2 | ||
| Dynamic resistance | RD | 0.3 | Ω | 8/20 µs | 2 | ||
| Capacitance | C | 190 | pF | 0 V | 2 | ||
| Peak pulse current | IPP | 20 | A | 8/20 µs | 2 | ||
| Peak pulse voltage, contact discharge | VPP | 30 | kV | ISO10605 / IEC 61000-4-2 (C = 150 pF, R = 330 Ω) | 2 | ||
| Peak pulse voltage, air discharge | VPP | 30 | kV | ISO10605 / IEC 61000-4-2 (C = 150 pF, R = 330 Ω) | 2 | ||
| Peak pulse voltage | VPP | 30 | kV | ISO 10605 - C = 330 pF, R = 2 kΩ | 2 | ||
| Operating junction temperature range | Tj | -55 | 150 | °C | 2 | ||
| Storage temperature range | Tstg | -55 | 150 | °C | 2 | ||
| Maximum lead temperature for soldering | TL | 260 | °C | during 10 s | 2 |
CAD (KiCad official)
- Symbol:
ESDA041-2W3Y - Footprint:
Package_TO_SOT_SMD:SOT-323_SC-70 - 3D model: SOT-323-3 (KiCad packages3D, STEP)
- 3D model files:
esda041-2w3y-etched.step/esda041-2w3y-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);esda041-2w3y.step/esda041-2w3y.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: STMicroelectronics datasheet (14 pp, sha256
2ab0f060dc1522e0, retrieved 2026-10-23, tier: manufacturer) - 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).