component
ESD3V3U1UT-MS
Public Made by Adomby adom
MSKSEMI ESD And Surge Protection (TVS/ESD), SOT-23. Pinout reviewed by a person 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
markdownESD3V3U1UT-MS
MSKSEMI · ESD And Surge Protection (TVS/ESD) · SOT-23
ESD3V3U1UT-MS from MSKSEMI, in a SOT-23. 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 (diode to common pin 3); VRWM 3.3V max, VB 4V min at 1mA, IR 40µA max, CT 1.5pF max. |
| 2 | I/O2 | passive | Protected line 2 (diode to common pin 3); VRWM 3.3V max, VB 4V min at 1mA, IR 40µA max, CT 1.5pF max. |
| 3 | COMMON | passive | Common node of the two protection diodes shown on the pin diagram, shared by pins 1 and 2; 80W peak pulse power (8/20µs). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | MSKSEMI |
| Package | SOT-23 |
| 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 |
|---|---|---|---|---|---|---|---|
| Reverse working voltage | VRWM | 3.3 | V | 2 | |||
| Breakdown voltage | VB | 4 | V | IT = 1 mA | 2 | ||
| Clamping voltage at 1 A | VC@1A | 7 | V | @ 1 A | 2 | ||
| Clamping voltage | VC | 14 | V | @ 5 A | 2 | ||
| Reverse leakage current | IR | 40 | µA | 2 | |||
| Line capacitance | CT | 1.5 | pF | 2 | |||
| Peak pulse power | PPK | 80 | Watts | tp = 8/20μs | 2 | ||
| Lead soldering temperature | TL | 260 | ℃ | 10 sec | 2 | ||
| Operating temperature | TJ | -55 | 125 | ℃ | 2 | ||
| Storage temperature | TSTG | -55 | 150 | ℃ | 2 |
CAD (KiCad official)
- Symbol:
ESD3V3U1UT-MS - Footprint:
Package_TO_SOT_SMD:SOT-23 - 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files:
esd3v3u1ut-ms-etched.step/esd3v3u1ut-ms-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);esd3v3u1ut-ms.step/esd3v3u1ut-ms.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: MSKSEMI datasheet (5 pp, sha256
40f85f4f91f75ffb, retrieved 2026-10-21, tier: lcsc) - Extractor:
ds2sf(Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate. - CAD: KiCad official libraries (CC-BY-SA 4.0).