# 6A4

**SUNMATE Elec** · Diodes - General Purpose · R-6

6A4 from SUNMATE Elec, in a R-6. 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 | SUNMATE Elec |
| Package | R-6 |
| 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 |  |  | 400 | V |  | 1 |
| Maximum RMS Voltage | VRMS |  |  | 280 | V |  | 1 |
| Maximum DC Blocking Voltage | VDC |  |  | 400 | V |  | 1 |
| Maximum Average Forward Rectified Current | I(AV) |  |  | 6 | A | 9.5mm lead length @ TA = 75°C | 1 |
| Peak Forward Surge Current | IFSM |  |  | 400 | A | 8.3 ms single half sine-wave superimposed on rated load (JEDEC method) | 1 |
| Maximum Instantaneous Forward Voltage | VF |  |  | 0.9 | V | at 6.0A DC | 1 |
| Maximum DC Reverse Current | IR |  |  | 10 | µA | TA = 25C, at rated blocking voltage | 1 |
| Maximum DC Reverse Current | IR |  |  | 100 | µA | TA = 100C, at rated blocking voltage | 1 |
| Operating and Storage Temperature Range | TJ, TSTG | -65 |  | 175 | °C |  | 1 |

## CAD (KiCad official)

- Symbol: `6A4`
- Footprint: `Diode_THT:D_P600_R-6_P20.00mm_Horizontal`
- 3D model: R-6 (KiCad packages3D, STEP)

## Provenance

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

- **Datasheet:** [SUNMATE Elec datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603103874018254848) (2 pp, sha256 `f32a88aa3d08f9c0`, 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/6a4-datasheet.pdf)