# TPSMC30CA

**Littelfuse** · TVS · DO-214AB

TPSMC30CA from Littelfuse, in a DO-214AB. 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 | A1 | passive | Bi-directional TVS terminal 1 (TPSMC30CA has no polarity, no cathode band; either terminal connects to the protected line, VR 25.6 V, VBR 28.5-31.5 V at 1 mA). |
| 2 | A2 | passive | Bi-directional TVS terminal 2 (TPSMC30CA has no polarity, no cathode band; either terminal connects to the protected line or return, max clamping 41.4 V at 36.7 A). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Littelfuse |
| Package | DO-214AB |
| Category | TVS/Fuse/Board Level Protection |
| Pins | 2 |

## 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 Stand-off Voltage | VR |  | 25.6 |  | V |  | 2 |
| Breakdown Voltage | VBR | 28.5 |  | 31.5 | V | @ IT = 1 mA | 2 |
| Maximum Clamping Voltage | VC |  |  | 41.4 | V | @ Ipp = 36.7 A | 2 |
| Maximum Peak Pulse Current | Ipp |  |  | 36.7 | A |  | 2 |
| Maximum Reverse Leakage | IR |  |  | 1 | µA | @ VR | 2 |
| Test Current | IT |  | 1 |  | mA |  | 2 |
| Peak Pulse Power Dissipation | PPPM |  |  | 1500 | W | 10/1000µs waveform, TA=25°C | 1 |
| Power Dissipation on Infinite Heat Sink | PM(AV) |  |  | 6.5 | W | TA=50°C | 1 |
| Operating Junction and Storage Temperature Range | TJ, TSTG | -65 |  | 150 | °C |  | 1 |
| Typical Thermal Resistance Junction to Lead | RuJL |  | 15 |  | °C/W |  | 1 |
| Typical Thermal Resistance Junction to Ambient | RuJA |  | 75 |  | °C/W |  | 1 |
| VBR Voltage Tolerance |  | -5 |  | 5 | % | 5% VBR voltage tolerance per part numbering system | 5 |

## Materials and finish

As the datasheet states them (page.json `metadata.appearance`; the 3D model's colours follow it).

| Part | Material | Colour / plating | Datasheet says | Page |
|---|---|---|---|---|
| contacts |  | tin | • Matte tin lead-free plated • Halogen free and RoHS | 1 |

## CAD (KiCad official)

- Symbol: `TPSMC30CA`
- Footprint: `Diode_SMD:D_SMC`
- 3D model: DO-214AB (KiCad packages3D, STEP)

## Provenance

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

- **Datasheet:** [Littelfuse datasheet](docs/tpsmc30ca-datasheet.pdf) (6 pp, sha256 `57f48c999c1a3dca`, retrieved 2026-10-30, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-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/tpsmc30ca-datasheet.pdf)