# UG2D

**Yangzhou Yangjie Elec Tech** · Diodes - Fast Recovery Rectifiers · SMB(DO-214AA)

UG2D from Yangzhou Yangjie Elec Tech, 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, the end marked by the cathode line on the DO-214AA (SMB) package; rated VRRM 200 V for UG2D. |
| 2 | A | passive | Anode terminal, the end opposite the cathode line on the DO-214AA (SMB) package; average rectified current 2.0 A for UG2D. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Yangzhou Yangjie Elec Tech |
| Package | SMB(DO-214AA) |
| 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 |  |  | 200 | V | Ta=25℃ | 1 |
| Average rectified output current | IO |  |  | 2 | A | @60Hz sine wave, resistance load, TL (Fig.1) | 1 |
| Surge (non-repetitive) forward current | IFSM |  |  | 50 | A | @60Hz half-sine wave, 1 cycle, Ta=25℃ | 1 |
| Storage temperature | Tstg | -55 |  | 150 | ℃ |  | 1 |
| Junction temperature | Tj | -55 |  | 150 | ℃ |  | 1 |
| Maximum instantaneous forward voltage drop per diode | VF |  |  | 0.92 | V | IFM=2.0A | 1 |
| Maximum reverse recovery time | trr |  |  | 25 | ns | IF=0.5A,IR=1.0A,Irr=0.25A | 1 |
| Maximum DC reverse current at rated DC blocking voltage | IRRM |  |  | 5 | μA | VRM=VRRM, Ta=25℃ | 1 |
| Maximum DC reverse current at rated DC blocking voltage | IRRM |  |  | 50 | μA | VRM=VRRM, Ta=125℃ | 1 |
| Typical thermal resistance junction to ambient | RθJ-A |  | 70 |  | ℃/W | Mounted on P.C.B. with 0.3" x 0.3" (8.0 mm x 8.0 mm) copper pad areas | 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: `UG2D`
- Footprint: `Diode_SMD:D_SMB`
- 3D model: SMB(DO-214AA) (KiCad packages3D, STEP)
- 3D model files: `ug2d-etched.step` / `ug2d-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ug2d.step` / `ug2d.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Yangzhou Yangjie Elec Tech datasheet](docs/ug2d-datasheet.pdf) (5 pp, sha256 `600205b71b46f7f1`, retrieved 2026-10-22, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-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/ug2d-datasheet.pdf)