# 4N35

**Everlight Elec** · Transistor, Photovoltaic Output Optoisolators · DIP-6

4N35 from Everlight Elec, in a DIP-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 | Anode | passive | Anode of the infrared emitting diode (input side), with forward current limited to 60 mA and reverse voltage to 6 V at Ta=25°C. |
| 2 | Cathode | passive | Cathode of the infrared emitting diode (input side), which must stay within the 6 V reverse voltage rating and 60 mA forward current limit at Ta=25°C. |
| 3 | NC | unconnected | No connection; the pin is not connected internally, and in the isolation test it is shorted together with pins 1 and 2. |
| 4 | Emitter | passive | Emitter of the output phototransistor, rated with an emitter-collector voltage (VECO) of 7 V maximum. |
| 5 | Collector | passive | Collector of the output phototransistor, rated for a collector-emitter voltage (VCEO) of 80 V maximum and 150 mW collector power dissipation at Ta=25°C. |
| 6 | Base | passive | Base of the output phototransistor, with the emitter-base voltage (VEBO) rated at 7 V maximum; the base is typically left unconnected for photocoupler operation. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Everlight Elec |
| Package | DIP-6 |
| Category | Optoisolators |
| Pins | 6 |

## CAD (KiCad official)

- Symbol: `4N35`
- Footprint: `Package_DIP:DIP-6_W7.62mm`
- 3D model: DIP-6 (KiCad packages3D, STEP)
- 3D model files: `4n35-etched.step` / `4n35-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `4n35.step` / `4n35.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Everlight Elec datasheet](https://en.everlight.com/wp-content/plugins/ItemRelationship/product_files/pdf/4N2X_3X_H11AX.pdf) (13 pp, sha256 `7e8bde6775c093f0`, retrieved 2026-10-09, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-5-5` (text), consensus `claude-sonnet-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/4n35-datasheet.pdf)