component
UCLAMP0504A
Public Made by Adomby adom
Leiditech ESD And Surge Protection (TVS/ESD), SOT-25. 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
markdownUCLAMP0504A
Leiditech · ESD And Surge Protection (TVS/ESD) · SOT-25
UCLAMP0504A from Leiditech, in a SOT-25. 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 | Protected line pin, lower-left diode of the array, tied through the diode to the common node at pin 2; 5V operating voltage (VRWM), ESD ±15kV air / ±8kV contact per IEC 61000-4-2. |
| 2 | GND | power_in | Common center node of the diode array that the diodes of pins 1, 3, 4 and 5 connect to; the datasheet pin drawing shows it without a printed name, so this is the reference/ground connection. |
| 3 | IO2 | passive | Protected line pin, lower-right diode of the array, tied through the diode to the common node at pin 2; 5V operating voltage (VRWM), ESD ±15kV air / ±8kV contact per IEC 61000-4-2. |
| 4 | IO3 | passive | Protected line pin, upper-right diode of the array, tied through the diode to the common node at pin 2; 5V operating voltage (VRWM), ESD ±15kV air / ±8kV contact per IEC 61000-4-2. |
| 5 | IO4 | passive | Protected line pin, upper-left diode of the array, tied through the diode to the common node at pin 2; 5V operating voltage (VRWM), ESD ±15kV air / ±8kV contact per IEC 61000-4-2. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Leiditech |
| Package | SOT-25 |
| Category | Circuit Protection |
| Pins | 5 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| ESD per IEC 61000-4-2 (Air) | VESD | -15 | 15 | Kv | IEC 61000-4-2 air discharge; printed as ±15 | 1 | |
| ESD per IEC 61000-4-2 (Contact) | VESD | -8 | 8 | Kv | IEC 61000-4-2 contact discharge; printed as ±8 | 1 | |
| Peak Pulse Power | Ppp | 100 | W | 8/20µs | 1 | ||
| Operating Temperature Range | TJ | -55 | 125 | ℃ | 1 | ||
| Storage Temperature Range | TSTJ | -55 | 150 | ℃ | 1 | ||
| Breakdown Voltage | VBR | 6.5 | V | IT = 1 mA | 2 | ||
| Reverse Working Voltage | VRWM | 5 | V | 2 | |||
| Clamping Voltage | VC | 9.8 | V | @1A | 2 | ||
| Clamping Voltage (Max column) | VC | 15 | V | 2 | |||
| Reverse Leakage Current (Max) | IR | 2.5 | μA | 2 | |||
| Capacitance (Typ.) | C | 1 | Pf | 2 | |||
| Capacitance (Max) | C | 20 | Pf | 2 |
CAD (KiCad official)
- Symbol:
UCLAMP0504A - Footprint:
Package_TO_SOT_SMD:SOT-23-5 - 3D model: SOT-25 (KiCad packages3D, STEP)
- 3D model files:
uclamp0504a-etched.step/uclamp0504a-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);uclamp0504a.step/uclamp0504a.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Leiditech datasheet (3 pp, sha256
bf4b39d62f1e7bc2, retrieved 2026-10-18, 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).