# SS34B

**MDD Microdiode Semiconductor** · Schottky Diodes · SMB(DO-214AA)

SS34B from MDD Microdiode Semiconductor, in a SMB(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 | K | passive | Cathode terminal, marked by the color band on the package; SS34B has VRRM and VDC of 40 V and 3 A average forward current. |
| 2 | A | passive | Anode terminal at the end opposite the color band; SS34B has VF of 0.55 V maximum at 3.0 A per the table column grouping. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | MDD Microdiode Semiconductor |
| Package | SMB(DO-214AA) |
| Category | Diodes |
| Pins | 2 |

## CAD (KiCad official)

- Symbol: `SS34B`
- Footprint: `Diode_SMD:D_SMB`
- 3D model: SMB(DO-214AA) (KiCad packages3D, STEP)
- 3D model files: `ss34b-etched.step` / `ss34b-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ss34b.step` / `ss34b.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [MDD Microdiode Semiconductor datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8586173143932788736) (3 pp, sha256 `4ae1cd9e2190fcaf`, 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/ss34b-datasheet.pdf)