# AT816D-FEH-D

**AOTE** · Transistor, Photovoltaic Output Optoisolators · DIP-4

AT816D-FEH-D from AOTE, in a DIP-4. 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 | input | LED anode input; the datasheet gives an absolute maximum forward current IF of 50 mA, a peak forward current of 1 A for 1 µs pulses, and a power dissipation of 70 mW. |
| 2 | Cathode | passive | LED cathode; the datasheet gives an absolute maximum reverse voltage VR of 6 V for the input side. |
| 3 | Emitter | passive | Phototransistor emitter; the datasheet gives an absolute maximum emitter-collector voltage VECO of 7 V. |
| 4 | Collector | passive | Phototransistor collector; the datasheet gives an absolute maximum collector-emitter voltage VCEO of 80 V, collector current IC of 50 mA, and collector power dissipation PC of 150 mW. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | AOTE |
| Package | DIP-4 |
| Category | Optoisolators |
| Pins | 4 |

## CAD (KiCad official)

- Symbol: `AT816D-FEH-D`
- Footprint: `Package_DIP:DIP-4_W7.62mm`
- 3D model: DIP-4 (KiCad packages3D, STEP)
- 3D model files: `at816d-feh-d-etched.step` / `at816d-feh-d-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `at816d-feh-d.step` / `at816d-feh-d.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [AOTE datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8613810397912571904) (12 pp, sha256 `ba0300805dc9b713`, retrieved 2026-10-09, tier: lcsc)
- **Datasheet language:** Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- **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/at816d-feh-d-datasheet.pdf)