# P6SMB120CA

**Littelfuse** · TVS · DO-214AA(SMBJ)

P6SMB120CA from Littelfuse, in a DO-214AA(SMBJ). 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 | Bidirectional TVS terminal 1 (no cathode band on the CA version), with 102V reverse stand-off, 114-126V breakdown at 1mA and 165V max clamping at 3.7A Ipp. |
| 2 | A2 | passive | Bidirectional TVS terminal 2, interchangeable with terminal 1 (polarity-independent), protecting against 600W 10/1000µs transients. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Littelfuse |
| Package | DO-214AA(SMBJ) |
| Category | Circuit 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 |  | 102 |  | V |  | 2 |
| Breakdown Voltage | VBR | 114 |  | 126 | V | @ IT = 1 mA | 2 |
| Maximum Clamping Voltage | VC |  |  | 165 | V | @ Ipp = 3.7 A | 2 |
| Maximum Peak Pulse Current | Ipp |  |  | 3.7 | A |  | 2 |
| Maximum Reverse Leakage | IR |  |  | 1 | µA | @ VR | 2 |
| Maximum Temperature Coefficient of VBR | αT |  |  | 0.107 | %/C |  | 2 |
| Peak Pulse Power Dissipation | PPPM |  |  | 600 | W | 10/1000us waveform, single die parts | 1 |
| Power Dissipation on Infinite Heat Sink | PD |  |  | 5 | W | TL=50°C | 1 |
| Peak Forward Surge Current | IFSM |  |  | 100 | A | 8.3ms single half sine wave, unidirectional only | 1 |
| Operating Temperature Range | TJ | -65 |  | 150 | °C |  | 1 |
| Storage Temperature Range | TSTG | -65 |  | 175 | °C |  | 1 |
| Thermal Resistance Junction to Lead | RθJL |  | 20 |  | °C/W | Typical | 1 |
| Thermal Resistance Junction to Ambient | RθJA |  | 100 |  | °C/W | Typical | 1 |
| VBR Temperature Coefficient (typical) | αT |  | 0.1 |  | % | VBR @ TJ = VBR@25°C x (1+αT x (TJ - 25)) | 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: `P6SMB120CA`
- Footprint: `Diode_SMD:D_SMB`
- 3D model: DO-214AA(SMBJ) (KiCad packages3D, STEP)
- 3D model files: `p6smb120ca-etched.step` / `p6smb120ca-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `p6smb120ca.step` / `p6smb120ca.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Littelfuse datasheet](docs/p6smb120ca-datasheet.pdf) (6 pp, sha256 `2c321de35bbafba1`, retrieved 2026-10-22, 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/p6smb120ca-datasheet.pdf)