# AT817C-FeH-DE

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

AT817C-FeH-DE from AOTE, in a DIP-4. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.

## Pinout

| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | Anode | input | LED anode of the input-side GaAs infrared emitter. Drive with forward current IF (max 50 mA DC, 1000 mA pulsed 1 us); typical VF ~1.2 V at IF=20 mA. Use a series current-limiting resistor. |
| 2 | Cathode | input | LED cathode of the input-side infrared emitter. Reverse voltage rated to VR=6 V max. Return path for the LED drive current. |
| 3 | Emitter | output | Emitter of the output-side NPN silicon phototransistor. Typically tied to the output-side ground/reference. VECO breakdown 6 V max. |
| 4 | Collector | output | Collector of the output-side NPN phototransistor. Sinks collector current IC (max 50 mA) modulated by the LED photocurrent. BVCEO >= 80 V; VCE(sat) typ 0.1 V (max 0.2 V) at IF=20 mA, IC=1 mA. |

## Key specifications

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

## Ordering variants

Same part, different packaging or reel option.

- `AT817C-FeH-DE-CuH-D`
- `AT817C-FeH-DE`
- `AT817C-FeH-DE-CuH-DE`
- `AT817C-FeH-DE-CuH-S`
- `AT817C-FeH-S`
- `AT817C-FeH-DE-CuH-M`
- `AT817C-FeH-M`

## CAD (KiCad official)

- Symbol: `AT817C-FeH-DE`
- Footprint: `Package_DIP:DIP-4_W7.62mm`
- 3D model: DIP-4 (KiCad packages3D, STEP)
- 3D model files: `at817c-feh-de-etched.step` / `at817c-feh-de-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `at817c-feh-de.step` / `at817c-feh-de.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/8590921295477755904) (12 pp, sha256 `6b8be713aab0a028`, retrieved 2026-08-17, 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:** `ds2sf` (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
- **CAD:** KiCad official libraries (CC-BY-SA 4.0).

[Datasheet PDF](docs/at817c-feh-de-datasheet.pdf)