# EJ

**DIYI Elec Tech** · Diodes - Fast Recovery Rectifiers · SOD-123FL

EJ from DIYI Elec Tech, in a SOD-123FL. 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 | DIYI Elec Tech |
| Package | SOD-123FL |
| 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 |
|---|---|---|---|---|---|---|---|
| Peak Repetitive Reverse Voltage | VRRM |  |  | 600 | V |  | 1 |
| Working Peak Reverse Voltage | VRWM |  |  | 600 | V |  | 1 |
| DC Blocking Voltage | VDC |  |  | 600 | V |  | 1 |
| RMS Reverse Voltage | VRMS |  |  | 420 | V |  | 1 |
| Average Rectified Output Current | IF(AV) |  |  | 1 | A |  | 1 |
| Non-Repetitive Peak Forward Surge Current | IFSM |  |  | 30 | A | 8.3ms single half sine-wave, superimposed on rated load (JEDEC method) | 1 |
| Forward Voltage per element | VFM |  |  | 1.7 | V | IF=1.0A | 1 |
| Peak Reverse Current | IR |  |  | 5 | uA | At rated DC blocking voltage, TA=25℃ | 1 |
| Peak Reverse Current | IR |  |  | 100 | uA | At rated DC blocking voltage, TA=125℃ | 1 |
| Maximum reverse recovery time | Trr |  |  | 35 | ns | IF=0.5A, IR=1A, Irr=0.25A | 1 |
| Operating and Storage Temperature Range | TJ,TSTG | -55 |  | 150 | ℃ |  | 1 |
| Typical Junction Capacitance | CJ |  | 10 |  | pF | 1.0 MHz, applied reverse voltage 4.0V D.C. | 1 |

## CAD (KiCad official)

- Symbol: `EJ`
- Footprint: `Diode_SMD:D_SOD-123F`
- 3D model: SOD-123FL (KiCad packages3D, STEP)
- 3D model files: `ej-etched.step` / `ej-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ej.step` / `ej.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [DIYI Elec Tech datasheet](docs/ej-datasheet.pdf) (3 pp, sha256 `d8227eff1a2c0245`, retrieved 2026-10-23, 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/ej-datasheet.pdf)