# HER506

**LGE** · Fast Recovery / High Efficiency Diodes · DO-27

HER506 from LGE, in a DO-27. 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 | LGE |
| Package | DO-27 |
| 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 Recurrent Peak Reverse Voltage | VRRM |  |  | 600 | V |  | 1 |
| Maximum RMS Voltage | VRMD |  |  | 420 | V |  | 1 |
| Maximum DC Blocking Voltage | VDC |  |  | 600 | V |  | 1 |
| Maximum Average Forward Rectified Current | I(AV) |  |  | 5 | A | .375 (9.5mm) lead length, TA = 55 °C | 1 |
| Peak Forward Surge Current | IFSM |  |  | 200 | A | 8.3 ms single half sine-wave superimposed on rated load (JEDEC method) | 1 |
| Maximum DC Reverse Current | IR |  |  | 10 | uA | Ta=25 °C at rated DC blocking voltage | 1 |
| Maximum DC Reverse Current | IR |  |  | 200 | uA | Ta=125 °C at rated DC blocking voltage | 1 |
| Operating Temperature Range | TJ | -65 |  | 150 | °C |  | 1 |
| Storage Temperature Range | TSTG | -65 |  | 150 | °C |  | 1 |
| Typical Thermal Resistance | RθJA |  | 40 |  | °C/W |  | 1 |
| Soldering temperature (guaranteed) |  |  |  | 260 | °C | 10 s, .375 in (9.5 mm) lead length, 5 lbs (2.3 kg) tension | 1 |

## CAD (KiCad official)

- Symbol: `HER506`
- Footprint: `Diode_THT:D_DO-27_P15.24mm_Horizontal`
- 3D model: DO-27 (KiCad packages3D, STEP)

## Provenance

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

- **Datasheet:** [LGE datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588887892001230848) (2 pp, sha256 `47de19987297b8f1`, retrieved 2026-10-15, 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/her506-datasheet.pdf)