# TPSMB26CA-VR

**Littelfuse** · TVS · DO-214AA

TPSMB26CA-VR from Littelfuse, in a DO-214AA. 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 | Terminal 1 | passive | Bidirectional (CA) TVS terminal with no polarity; stand-off voltage VR 26.0 V, breakdown 28.90-31.90 V at 1 mA, max clamping 42.1 V at 14.3 A Ipp. |
| 2 | Terminal 2 | passive | Second bidirectional TVS terminal, interchangeable with terminal 1 because the part has no cathode band; 600 W peak pulse power at 10/1000µs. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Littelfuse |
| Package | DO-214AA |
| 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 |
|---|---|---|---|---|---|---|---|
| Breakdown voltage | VBR | 28.9 |  | 31.9 | V | @ IT, test current 1 mA | 2 |
| Maximum clamping voltage | VC |  |  | 42.1 | V | @ Ipp 14.3 A | 2 |
| Maximum peak pulse current | Ipp |  |  | 14.3 | A |  | 2 |
| Maximum reverse leakage current | IR |  |  | 1 | µA | @ VR 26 V | 2 |
| Maximum temperature coefficient of VBR | αT |  |  | 0.093 | %/C |  | 2 |
| Breakdown voltage tolerance (5% suffix CA) | VBR | -5 |  | 5 | % | Bidirectional CA suffix, per part numbering system | 6 |
| Operating junction temperature range | TJ | -65 |  | 175 | °C | VR≤78V | 1 |
| Peak pulse power dissipation | PPPM |  |  | 600 | W | 10/1000µs waveform (Fig.1) | 1 |
| Power dissipation on infinite heat sink | PM(AV) |  |  | 5 | W | TL=50°C | 1 |
| Storage temperature range | TSTG | -65 |  | 175 | °C |  | 1 |
| Reverse stand-off voltage | VR |  | 26 |  | V |  | 2 |
| Typical reverse leakage current at 150°C | IR |  | 8 |  | µA | @ 150°C | 2 |
| Typical thermal resistance junction to lead | RθJL |  | 20 |  | °C/W |  | 1 |
| Typical thermal resistance junction to ambient | RθJA |  | 100 |  | °C/W |  | 1 |

## 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: `TPSMB26CA-VR`
- Footprint: `Diode_SMD:D_SMB`
- 3D model: DO-214AA (KiCad packages3D, STEP)

## Provenance

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

- **Datasheet:** [Littelfuse datasheet](docs/tpsmb26ca-vr-datasheet.pdf) (6 pp, sha256 `ecc921caf390ee00`, retrieved 2026-11-07, 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/tpsmb26ca-vr-datasheet.pdf)