# RCLAMP0504F

**UMW** · Electrostatic And Surge Protection (TVS/ESD) · SOT-363

RCLAMP0504F from UMW, in a SOT-363. 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 | CH1 | bidirectional | Channel 1 I/O line of the ESD/surge protector, rated for a reverse working voltage of 5V with 0.3pF typical I/O-to-I/O capacitance. |
| 2 | GND | power_in | Ground reference pin that the I/O clamps are referenced to, with parasitic capacitance specified from each I/O pin to ground. |
| 3 | CH2 | bidirectional | Channel 2 I/O line of the ESD/surge protector, rated for a reverse working voltage of 5V with 0.3pF typical I/O-to-I/O capacitance. |
| 4 | CH3 | bidirectional | Channel 3 I/O line of the ESD/surge protector, rated for a reverse working voltage of 5V with 0.3pF typical I/O-to-I/O capacitance. |
| 5 | VDD | power_in | Power line pin of the device, which the datasheet states is protected as one power line within a 5V low operating voltage. |
| 6 | CH4 | bidirectional | Channel 4 I/O line of the ESD/surge protector, rated for a reverse working voltage of 5V with 0.3pF typical I/O-to-I/O capacitance. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | UMW |
| Package | SOT-363 |
| Category | TVS/Fuse/Board Level Protection |
| Pins | 6 |

## Electrical characteristics

Limits as printed in the datasheet (page.json `metadata.characteristics` carries them as data).

| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Peak Pulse Power | PPP |  |  | 100 | W | tp=8/20µs | 2 |
| Peak Pulse Current | IPP |  |  | 4 | A | tp=8/20µs | 2 |
| ESD per IEC 61000-4-2 (Air) | VESD | -30 |  | 30 | kV | Air discharge, IEC 61000-4-2 | 2 |
| ESD per IEC 61000-4-2 (Contact) | VESD | -25 |  | 25 | kV | Contact discharge, IEC 61000-4-2 | 2 |
| Junction Temperature Range | TJ | -55 |  | 125 | °C |  | 2 |
| Storage Temperature Range | TSTG | -55 |  | 150 | °C |  | 2 |
| Reverse Working Voltage | VRWM |  |  | 5 | V | Any I/O pin to ground | 2 |
| Breakdown Voltage | VBR | 6 |  |  | V | IT=1mA, any I/O pin to ground | 2 |
| Reverse Leakage Current | IR |  |  | 0.5 | µA | VRWM=5V, any I/O pin to ground | 2 |
| Clamping Voltage | VC |  | 15 |  | V | IPP=1A (8x20µs pulse), any I/O pin to ground | 2 |
| Clamping Voltage | VC |  | 20 |  | V | IPP=4A (8x20µs pulse), any I/O pin to ground | 2 |
| Parasitic Capacitance | CJ |  | 0.3 |  | pF | VR=0V, f=1MHz, between I/O pins | 2 |
| Parasitic Capacitance | CJ |  | 0.4 | 0.8 | pF | VR=0V, f=1MHz, any I/O pin to ground | 2 |

## CAD (KiCad official)

- Symbol: `RCLAMP0504F`
- Footprint: `Package_TO_SOT_SMD:SOT-363_SC-70-6`
- 3D model: SOT-363 (KiCad packages3D, STEP)

## Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

- **Datasheet:** [UMW datasheet](docs/rclamp0504f-datasheet.pdf) (6 pp, sha256 `bb102d7fbc3b382b`, retrieved 2026-11-04, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-5-5` (text), consensus `claude-sonnet-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).

[Datasheet PDF](docs/rclamp0504f-datasheet.pdf)