# ILD217T

**Vishay Intertech** · Transistor, Photovoltaic Output Optoisolators · SO-8

ILD217T from Vishay Intertech, in a SO-8. 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 | A | passive | Anode of the channel 1 gallium arsenide infrared LED; the input is rated for 6 V peak reverse voltage and 30 mA continuous forward current per channel. |
| 2 | C | passive | Cathode of the channel 1 infrared LED; the input is rated for 6 V peak reverse voltage and 30 mA continuous forward current per channel. |
| 3 | A | passive | Anode of the channel 2 infrared LED; the input is rated for 6 V peak reverse voltage and 30 mA continuous forward current per channel. |
| 4 | C | passive | Cathode of the channel 2 infrared LED; the input is rated for 6 V peak reverse voltage and 30 mA continuous forward current per channel. |
| 5 | E | passive | Emitter of the channel 2 silicon NPN phototransistor; the emitter-collector breakdown voltage BVECO is 7 V at IE = 10 µA. |
| 6 | C | passive | Collector of the channel 2 silicon NPN phototransistor; the collector-emitter breakdown voltage BVCEO is 70 V at IC = 10 µA. |
| 7 | E | passive | Emitter of the channel 1 silicon NPN phototransistor; the emitter-collector breakdown voltage BVECO is 7 V at IE = 10 µA. |
| 8 | C | passive | Collector of the channel 1 silicon NPN phototransistor; the collector-emitter breakdown voltage BVCEO is 70 V at IC = 10 µA. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Vishay Intertech |
| Package | SO-8 |
| Category | Optoisolators |
| Pins | 8 |

## Electrical characteristics

Limits as printed in the datasheet (page.json `metadata.characteristics` carries them as data).

| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Forward voltage | VF |  | 1.2 | 1.55 | V | IF = 10 mA | 2 |
| Reverse current | IR |  | 0.1 | 100 | μA | VR = 6 V | 2 |
| Collector emitter breakdown voltage | BVCEO | 70 |  |  | V | IC = 10 μA | 2 |
| Emitter collector breakdown voltage | BVECO | 7 |  |  | V | IE = 10 μA | 2 |
| Collector emitter leakage current | ICEO |  | 5 | 50 | nA | VCE = 10 V, IF = 0 A | 2 |
| Collector emitter saturation voltage | VCEsat |  |  | 0.4 | V | IF = 10 mA, IC = 2.5 mA | 2 |
| Resistance (input to output) | RIO | 100 |  |  | GΩ |  | 2 |
| Current transfer ratio | CTR | 100 | 120 |  | % | VCE = 5 V, IF = 1 mA | 2 |
| Peak reverse voltage | VR |  |  | 6 | V |  | 1 |
| Peak pulsed current |  |  |  | 1 | A | 1 μs, 300 pps | 1 |
| Continuous forward current per channel | IF |  |  | 30 | mA |  | 1 |
| Power dissipation (INPUT section) | Pdiss |  |  | 50 | mW |  | 1 |
| Collector emitter breakdown voltage (absolute maximum) | BVCEO |  |  | 70 | V |  | 1 |
| Emitter collector breakdown voltage (absolute maximum) | BVECO |  |  | 7 | V |  | 1 |
| Power dissipation per channel (OUTPUT section) | Pdiss |  |  | 125 | mW | per channel | 1 |
| Isolation test voltage | VISO |  |  | 4000 | VRMS | t = 1 s | 2 |
| Total package dissipation | Ptot |  |  | 350 | mW | 2 LEDs and 2 detectors, 2 channels | 2 |
| Storage temperature | Tstg | -55 |  | 150 | °C |  | 2 |
| Operating temperature | Tamb | -55 |  | 100 | °C |  | 2 |
| Soldering time | Tsld |  |  | 10 | s | from 260 °C | 2 |
| Climatic classification / Comparative tracking index | CTI | 175 | 399 |  |  |  | 2 |
| Maximum transient isolation voltage | VIOTM |  |  | 6000 | V |  | 2 |
| Maximum repetitive peak isolation voltage | VIORM |  |  | 560 | V |  | 2 |
| Safety power dissipation | PSO |  |  | 350 | mW |  | 2 |
| Safety input current | ISI |  |  | 150 | mA |  | 2 |
| Safety temperature | TSI |  |  | 165 | °C |  | 2 |
| Creepage distance |  | 4 |  |  | mm |  | 2 |
| Clearance distance |  | 4 |  |  | mm |  | 2 |
| Insulation thickness |  | 0.2 |  |  | mm |  | 2 |

## Materials and finish

As the datasheet states them (page.json `metadata.appearance`; the 3D model's colours follow it).

| Part | Material | Colour / plating | Datasheet says | Page |
|---|---|---|---|---|
| housing | ABS |  | Insulation thickness 0.2 mm ABSOLUTE MAXIMUM RATINGS (Tamb = 25 °C, unless otherwise specified) | 2 |

## CAD (KiCad official)

- Symbol: `ILD217T`
- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`
- 3D model: SO-8 (KiCad packages3D, STEP)
- 3D model files: `ild217t-etched.step` / `ild217t-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ild217t.step` / `ild217t.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Vishay Intertech datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8586196888806690816) (4 pp, sha256 `2a96e0a8d13e21c1`, retrieved 2026-10-18, 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/ild217t-datasheet.pdf)