# SS22B

**Shandong Jingdao Microelectronics** · Schottky Diodes · SMB

SS22B from Shandong Jingdao Microelectronics, in a 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 | Cathode | passive | Cathode terminal of the SS22B Schottky barrier rectifier; the datasheet states no pin-specific electrical limits beyond the device ratings (VRRM 20 V, IF(AV) 2.0 A). |
| 2 | Anode | passive | Anode terminal of the SS22B Schottky barrier rectifier; the datasheet states no pin-specific electrical limits beyond the device ratings (VRRM 20 V, IF(AV) 2.0 A). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Shandong Jingdao Microelectronics |
| Package | SMB |
| Category | Diodes |
| 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 |
|---|---|---|---|---|---|---|---|
| Maximum Repetitive Peak Reverse Voltage | VRRM |  |  | 20 | V |  | 1 |
| Maximum RMS Voltage | VRMS |  |  | 14 | V |  | 1 |
| Maximum DC Blocking Voltage | VDC |  |  | 20 | V |  | 1 |
| Maximum Average Forward Rectified Current | IF(AV) |  |  | 2 | A | Ta = 25 °C | 1 |
| Max Instantaneous Forward Voltage | VF |  |  | 0.55 | V | at 2 A | 1 |
| Maximum DC Reverse Current at Rated DC Reverse Voltage, Ta = 25 °C | IR |  |  | 0.5 | mA | Ta = 25 °C, at rated DC reverse voltage | 1 |
| Maximum DC Reverse Current at Rated DC Reverse Voltage, Ta = 100 °C | IR |  |  | 5 | mA | Ta = 100 °C, at rated DC reverse voltage | 1 |
| Operating Junction Temperature Range | Tj | -55 |  | 125 | °C |  | 1 |
| Storage Temperature Range | Tstg | -55 |  | 150 | °C |  | 1 |
| Typical Thermal Resistance | RθJA |  | 60 |  | °C/W | P.C.B. mounted with 2.0" X 2.0" (5 X 5 cm) copper pad areas | 1 |

## CAD (KiCad official)

- Symbol: `SS22B`
- Footprint: `Diode_SMD:D_SMB`
- 3D model: SMB (KiCad packages3D, STEP)
- 3D model files: `ss22b-etched.step` / `ss22b-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ss22b.step` / `ss22b.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Shandong Jingdao Microelectronics datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588907410480513024) (3 pp, sha256 `dc604e81925a8aeb`, retrieved 2026-10-14, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-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/ss22b-datasheet.pdf)