# DY-ITR8102

**TONYU** · Photointerrupters - Slot Type - Transistor Output · DIP-4

DY-ITR8102 from TONYU, 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 | Anode of the GaAlAs infrared LED; forward current max 50 mA, VF 1.2 V typ (1.5 V max) at IF=20mA, needs a series protection resistor. |
| 2 | Cathode | passive | Cathode of the infrared LED; reverse voltage max 5 V. |
| 3 | Collector | passive | Collector of the silicon phototransistor; Vceo max 30 V, collector current max 30 mA. |
| 4 | Emitter | passive | Emitter of the silicon phototransistor; emitter-collector voltage max 5 V. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | TONYU |
| Package | DIP-4 |
| Category | Optoelectronics |
| Pins | 4 |

## 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 | 1.5 | V | IF=20mA | 3 |
| Reverse Current | IR |  |  | 10 | uA | VR=5V | 3 |
| Dark Current | Iceo |  |  | 100 | nA | Vce=20V,Ee=0 | 3 |
| C-E Saturation Voltage | Vce(sat) |  |  | 0.4 | V | Ic=2mA ,Ee=1 mW/cm2 | 3 |
| Collect Current | Ic(ON) | 0.9 |  | 15 | mA | Vce=5V, IF=20mA | 3 |
| Forward Current | IF |  |  | 50 | mA |  | 5 |
| Reverse Voltage | VRP |  |  | 5 | V |  | 5 |
| Power Dissipation (input) | Pd |  |  | 75 | mW |  | 5 |
| Collector Current | Ic |  |  | 30 | mA |  | 5 |
| Collector-Emitter Voltage | Vceo |  |  | 30 | V |  | 5 |
| Emitter-Collector Voltage | Veco |  |  | 5 | V |  | 5 |
| Collector Power Dissipation (output) | Pd |  |  | 75 | mW |  | 5 |
| Operation temperature | Tapr | -25 |  | 85 | ℃ |  | 5 |
| Storage temperature | Tstg | -40 |  | 85 | ℃ |  | 5 |
| Soldering temperature | Tsol |  |  | 260 | ℃ | Wave soldering, 3mm out of physical body, ≤3S | 5 |

## CAD (KiCad official)

- Symbol: `DY-ITR8102`
- Footprint: `Package_DIP:DIP-4_W7.62mm`
- 3D model: DIP-4 (KiCad packages3D, STEP)
- 3D model files: `dy-itr8102-etched.step` / `dy-itr8102-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `dy-itr8102.step` / `dy-itr8102.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [TONYU datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8758072404398747648) (7 pp, sha256 `f536523eac5ea51e`, retrieved 2026-10-14, 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-sonnet-5-5` (text+vision), consensus `claude-opus-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/dy-itr8102-datasheet.pdf)