# LTV816D

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

LTV816D from UMW, 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 | passive | Input LED anode; the input side is rated for a forward current of 60 mA (IFP 1 A for 1 µs pulses) and a reverse voltage of 6 V, with 100 mW input power dissipation. |
| 2 | Cathode | passive | Input LED cathode; the input side is rated for a forward current of 60 mA (IFP 1 A for 1 µs pulses) and a reverse voltage of 6 V, with 100 mW input power dissipation. |
| 3 | Emitter | passive | Output NPN transistor emitter; the output side is rated for a collector-emitter voltage of 80 V, an emitter-collector voltage of 6 V, a collector current of 50 mA and 150 mW collector power dissipation. |
| 4 | Collector | passive | Output NPN transistor collector; the output side is rated for a collector-emitter voltage of 80 V, an emitter-collector voltage of 6 V, a collector current of 50 mA and 150 mW collector power dissipation. |

## Key specifications

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

## CAD (KiCad official)

- Symbol: `LTV816D`
- Footprint: `Package_DIP:DIP-4_W7.62mm`
- 3D model: DIP-4 (KiCad packages3D, STEP)
- 3D model files: `ltv816d-etched.step` / `ltv816d-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ltv816d.step` / `ltv816d.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [UMW datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8757271436275007488) (13 pp, sha256 `af0e1295ed4f8fe5`, 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/ltv816d-datasheet.pdf)