# K210

**DOWO** · Schottky Diodes · SOD-123

K210 from DOWO, in a SOD-123. 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, marked by the cathode line on the package; K210 has VRRM of 100 V, IO of 2.0 A and VF of 0.85 V at IFM=2.0A. |
| 2 | A | passive | Anode, the end opposite the cathode line; forward current rated 2.0 A average with 40 A non-repetitive surge (IFSM). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | DOWO |
| Package | SOD-123 |
| 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 |
|---|---|---|---|---|---|---|---|
| Repetitive peak reverse voltage | VRRM |  |  | 100 | V |  | 1 |
| Average rectified output current | IO |  |  | 2 | A | @60Hz sine wave, Resistance load, Ta (FIG.1) | 1 |
| Surge (non-repetitive) forward current | IFSM |  |  | 40 | A | @60Hz half-sine wave, 1 cycle, Tj=25℃ | 1 |
| Storage temperature | Tstg | -55 |  | 150 | ℃ |  | 1 |
| Junction temperature | Tj | -55 |  | 175 | ℃ | Column pairing inferred: K28~K220 range; see review_required | 1 |
| Maximum instantaneous forward voltage drop per diode | VF |  |  | 0.85 | V | IFM=2.0A; K28~K210 group value | 1 |
| Maximum DC reverse current at rated DC blocking voltage per diode, Ta=25℃ | IRRM |  |  | 0.1 | mA | @ VRM=VRRM, Ta=25℃; K28~K220 group value | 1 |
| Maximum DC reverse current at rated DC blocking voltage per diode, Ta=100℃ | IRRM |  |  | 5 | mA | @ VRM=VRRM, Ta=100℃; K28~K220 group value | 1 |
| Thermal resistance, junction to ambient | RθJ-A |  |  | 70 | ℃/W | Mounted on P.C.B with 3mm*3mm copper pad areas (note 1) | 2 |
| Thermal resistance, junction to lead | RθJ-L |  |  | 20 | ℃/W | Mounted on P.C.B with 3mm*3mm copper pad areas (note 1) | 2 |

## 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 | ● Terminals: Tin plated leads, solderable per J-STD-002 and JESD22-B102 | 1 |

## CAD (KiCad official)

- Symbol: `K210`
- Footprint: `Diode_SMD:D_SOD-123F`
- 3D model: SOD-123 (KiCad packages3D, STEP)
- 3D model files: `k210-etched.step` / `k210-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `k210.step` / `k210.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [DOWO datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603180496838795264) (2 pp, sha256 `a4d1cc2d494b23e2`, retrieved 2026-10-19, 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/k210-datasheet.pdf)