# RCLAMP0502BATCT-MS

**MSKSEMI** · ESD And Surge Protection (TVS/ESD) · SOT-523

RCLAMP0502BATCT-MS from MSKSEMI, in a SOT-523. 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 data line 1 (unidirectional TVS diode to common pin 3), reverse stand-off 5 V max working voltage, 0.7 pF typ. capacitance. |
| 2 | I/O2 | passive | Protected data line 2 (unidirectional TVS diode to common pin 3), reverse stand-off 5 V max working voltage, 0.7 pF typ. capacitance. |
| 3 | GND | power_in | Common anode of both TVS diodes, connected to ground as the return for ESD and surge current (3.5 A peak pulse, 8/20 μs). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | MSKSEMI |
| Package | SOT-523 |
| 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 |
|---|---|---|---|---|---|---|---|
| Junction Capacitance | Cj |  | 0.7 | 0.8 | pF | VR = 0V, f = 1MHz | 3 |
| Peak Pulse Power | PPP |  |  | 45 | Watts | tp = 8/20μs | 3 |
| Peak Pulse Current | Ipp |  |  | 3.5 | A | tp = 8/20μs (note1) | 3 |
| Lead Soldering Temperature | TL |  |  | 260 | ℃ | 10 seconds | 3 |
| Junction Temperature | TJ | -55 |  | 125 | ℃ |  | 3 |
| Storage Temperature | Tstg | -55 |  | 125 | ℃ |  | 3 |

## CAD (KiCad official)

- Symbol: `RCLAMP0502BATCT-MS`
- Footprint: `Package_TO_SOT_SMD:SOT-523`
- 3D model: SOT-523, generated from the KiCad footprint (body from the F.Fab outline, terminals on the pads, 0.8 mm nominal SOT-523 height). Neither the vendor nor KiCad ships a 3D model for this package, so the dimensions are nominal, not the manufacturer's CAD (STEP)
- 3D model files: `rclamp0502batct-ms-etched.step` / `rclamp0502batct-ms-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `rclamp0502batct-ms.step` / `rclamp0502batct-ms.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [MSKSEMI datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590229803166171136) (6 pp, sha256 `de0225a9bb3ea2d1`, retrieved 2026-10-18, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-5-5` (text+vision), consensus `claude-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).

[Datasheet PDF](docs/rclamp0502batct-ms-datasheet.pdf)