# H1M

**Yangzhou Yangjie Elec Tech** · Fast Recovery / High Efficiency Diodes · SOD-123

H1M from Yangzhou Yangjie Elec Tech, 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, the end marked by the cathode line on the package; H1M has VRRM 1000 V, IO 1.0 A and IFSM 30 A. |
| 2 | A | passive | Anode, the end opposite the cathode line; H1M has a maximum VF of 1.7 V at IFM=1.0A. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Yangzhou Yangjie Elec Tech |
| 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 |
|---|---|---|---|---|---|---|---|
| Maximum instantaneous forward voltage drop per diode | VF |  |  | 1.7 | V | IFM=1.0A | 1 |
| Maximum reverse recovery time | trr |  |  | 75 | ns | IF=0.5A,IR=1.0A,IRR=0.25A | 1 |
| Maximum DC reverse current at rated DC blocking voltage per diode | IRRM |  |  | 5 | μA | Ta=25℃ | 1 |
| Maximum DC reverse current at rated DC blocking voltage per diode | IRRM |  |  | 100 | μA | Ta=125℃ | 1 |
| Repetitive peak reverse voltage | VRRM |  |  | 1000 | V |  | 1 |
| Average rectified output current | IO |  |  | 1 | A | @60Hz half-sine wave, resistance load, TL (FIG.1) | 1 |
| Surge (non-repetitive) forward current | IFSM |  |  | 30 | A | @60Hz half-sine wave, 1 cycle, Tj=25℃ | 1 |
| Storage temperature | Tstg | -55 |  | 150 | ℃ |  | 1 |
| Junction temperature | Tj | -55 |  | 150 | ℃ |  | 1 |
| Typical thermal resistance, junction to lead | RθJ-L |  |  | 20 | ℃/W | Mounted on P.C.B with 3mm*3mm 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: `H1M`
- Footprint: `Diode_SMD:D_SOD-123F`
- 3D model: SOD-123 (KiCad packages3D, STEP)
- 3D model files: `h1m-etched.step` / `h1m-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `h1m.step` / `h1m.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Yangzhou Yangjie Elec Tech datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588918160887701504) (5 pp, sha256 `883aa5157811215a`, retrieved 2026-10-17, 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/h1m-datasheet.pdf)