# SMBJ550CA

**ZHIDE** · ESD And Surge Protection (TVS/ESD) · DO-214AA(SMB)

SMBJ550CA from ZHIDE, in a DO-214AA(SMB). 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 | K | passive | Cathode: the banded/marked end per the datasheet; pad 1 of the KiCad diode footprint. |
| 2 | A | passive | Anode. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | ZHIDE |
| Package | DO-214AA(SMB) |
| 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 |
|---|---|---|---|---|---|---|---|
| Breakdown voltage (bidirectional, CA) | VBR | 615 |  | 680 | V | IT = 1 mA | 2 |
| Max. clamping voltage | VC |  |  | 860 | V | @ IPP = 0.7 A | 2 |
| Max. peak pulse current | IPP |  |  | 0.7 | A | 10/1000 us waveform | 2 |
| Max. reverse leakage current | IR |  |  | 1 | uA | @ VRWM = 550 V | 2 |
| Reverse stand-off voltage | VRWM |  |  | 550 | V | Printed as stand-off voltage in device table | 2 |
| Peak power dissipation | PPP |  |  | 600 | W | 10/1000 us waveform (note 1) | 1 |
| Power dissipation on infinite heatsink | PD |  |  | 50 | W | TL = 75 °C | 1 |
| Power dissipation on infinite heatsink (second printed rating) | PD |  |  | 5 | W | TL = 75 C | 1 |
| Operating junction and storage temperature range | TJ, TSTG | -55 |  | 150 | °C |  | 1 |

## CAD (KiCad official)

- Symbol: `SMBJ550CA`
- Footprint: `Diode_SMD:D_SMB`
- 3D model: DO-214AA(SMB) (KiCad packages3D, STEP)
- 3D model files: `smbj550ca-etched.step` / `smbj550ca-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `smbj550ca.step` / `smbj550ca.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [ZHIDE datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603108772168409088) (3 pp, sha256 `c81f747a26885289`, retrieved 2026-10-15, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins`, primary `cathode-band convention` (convention), consensus `off` (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/smbj550ca-datasheet.pdf)