# 1KSMB16CA

**Littelfuse** · ESD And Surge Protection (TVS/ESD) · DO-214AA(SMBJ)

1KSMB16CA 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 | A | passive | Bidirectional TVS terminal with no polarity (no cathode band); VR 13.60V standoff, VBR 15.20V min to 16.80V max at 1mA, VC 22.5V max at Ipp 44.4A. |
| 2 | B | passive | Second bidirectional TVS terminal, interchangeable with the other; the part is rated for 1000W peak pulse power at 10/1000µs and has no cathode band. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Littelfuse |
| Package | DO-214AA(SMBJ) |
| Category | Circuit Protection |
| Pins | 2 |

## CAD (KiCad official)

- Symbol: `1KSMB16CA`
- Footprint: `Diode_SMD:D_SMB`
- 3D model: DO-214AA(SMBJ) (KiCad packages3D, STEP)
- 3D model files: `1ksmb16ca-etched.step` / `1ksmb16ca-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `1ksmb16ca.step` / `1ksmb16ca.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Littelfuse datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588943670007095296) (6 pp, sha256 `5456789e35da8ee5`, retrieved 2026-10-12, 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/1ksmb16ca-datasheet.pdf)