# ER3J

**PANJIT International** · Fast Recovery / High Efficiency Diodes · SMC

ER3J from PANJIT International, in a SMC. 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 | PANJIT International |
| Package | SMC |
| 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 (ER3J) | VRRM |  |  | 600 | V |  | 1 |
| Maximum RMS Voltage (ER3J) | VRMS |  |  | 420 | V |  | 1 |
| Maximum DC Blocking Voltage (ER3J) | VDC |  |  | 600 | V |  | 1 |
| Maximum Average Forward Current | IF(AV) |  |  | 3 | A | TL=75°C | 1 |
| Peak Forward Surge Current | IFSM |  |  | 100 | A | 8.3ms single half sine-wave superimposed on rated load | 1 |
| Maximum Forward Voltage | VF |  |  | 1.7 | V | at 3A | 1 |
| Maximum DC Reverse Current | IR |  |  | 200 | μA | Rated DC blocking voltage; TJ=25°C and TJ=100°C | 1 |
| Maximum Reverse Recovery Time | trr |  |  | 35 | ns | Note 1: IF=0.5A, IR=-1A, Irr=-0.25A | 1 |
| Typical Junction Capacitance | CJ |  | 45 |  | pF | Note 2: measured at 1 MHz and applied VR=4 V | 1 |
| Typical Thermal Resistance, junction to lead | RθJL |  | 16 |  | °C/W | Note 3: 8mm² (0.013mm thick) land areas | 1 |
| Operating and Storage Temperature Range | TJ,TSTG | -55 |  | 150 | °C |  | 1 |

## CAD (KiCad official)

- Symbol: `ER3J`
- Footprint: `Diode_SMD:D_SMC`
- 3D model: SMC (KiCad packages3D, STEP)
- 3D model files: `er3j-etched.step` / `er3j-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `er3j.step` / `er3j.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [PANJIT International datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588918524479737856) (5 pp, sha256 `a7675589bde4ba9a`, 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/er3j-datasheet.pdf)