# GR3M

**Yangzhou Yangjie Elec Tech** · Diodes - Fast Recovery Rectifiers · SMC(DO-214AB)

GR3M from Yangzhou Yangjie Elec Tech, in a SMC(DO-214AB). 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 | Yangzhou Yangjie Elec Tech |
| Package | SMC(DO-214AB) |
| 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 |
|---|---|---|---|---|---|---|---|
| Storage Temperature | Tstg | -55 |  | 150 | ℃ |  | 1 |
| Junction Temperature | Tj | -55 |  | 150 | ℃ |  | 1 |
| Repetitive Peak Reverse Voltage (GR3M) | VRRM |  |  | 1000 | V |  | 1 |
| Average Rectified Output Current | IO |  |  | 3 | A | @60Hz sine wave, Resistance load, TL (FIG.1) | 1 |
| Forward Surge Current (Non-repetitive) | IFSM |  |  | 100 | A | @60Hz Half-sine wave, 1 cycle, Ta=25℃ | 1 |
| Maximum instantaneous forward voltage drop per diode | VF |  |  | 1.3 | V | IFM=3.0A | 1 |
| Maximum reverse recovery time | TRR |  |  | 500 | ns | IF=0.5A, IR=1.0A, Irr=0.25A | 1 |
| Maximum DC reverse current at rated DC blocking voltage per diode, Ta=25℃ | IR |  |  | 5 | μA | at rated DC blocking voltage, Ta=25℃ | 1 |
| Maximum DC reverse current at rated DC blocking voltage per diode, Ta=125℃ | IR |  |  | 100 | μA | at rated DC blocking voltage, Ta=125℃ | 1 |
| Typical junction capacitance | Cj |  | 35 |  | pF | Measured at 1MHz and applied reverse voltage of 4.0 V.D.C. | 1 |
| Thermal resistance junction to terminal | RθJ-L |  | 13 |  | ℃/W | Mounted on P.C.B. with 0.6" x 0.6" (16mm x 16mm) 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 ● Polarity:Color band denotes cathode end | 1 |

## CAD (KiCad official)

- Symbol: `GR3M`
- Footprint: `Diode_SMD:D_SMC`
- 3D model: SMC(DO-214AB) (KiCad packages3D, STEP)
- 3D model files: `gr3m-etched.step` / `gr3m-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `gr3m.step` / `gr3m.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Yangzhou Yangjie Elec Tech datasheet](docs/gr3m-datasheet.pdf) (4 pp, sha256 `a9abb7089e564a2b`, retrieved 2026-10-22, 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/gr3m-datasheet.pdf)