# ZGY1203DT50A

**Chau Light** · Photointerrupters - Slot Type - Transistor Output · DIP-4

ZGY1203DT50A from Chau Light, 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 infrared emitting diode; max continuous forward current 50 mA, reverse voltage 5 V, VF 1.2 V typ at IF=20 mA. |
| 2 | Cathode | passive | Cathode of the infrared emitting diode (return for the IR LED forward current of up to 50 mA). |
| 3 | Collector | passive | Collector of the NPN silicon phototransistor; VCEO max 35 V and collector current max 20 mA. |
| 4 | Emitter | passive | Emitter of the NPN silicon phototransistor; emitter-collector voltage max 5 V. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Chau Light |
| 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 |
| Forward Voltage | VF |  | 1.4 | 1.85 | V | IF=100mA; pulse width ≤100μs, duty cycle=1% | 3 |
| Reverse Current | IR |  |  | 10 | μA | VR=5V | 3 |
| Dark Current | ICEO |  |  | 100 | nA | Ee=0mW/cm2, VCE=20V | 3 |
| Collector-Emitter Saturation Voltage | VCE(SAT) |  |  | 0.4 | V | IC=2mA, Ee=1mW/cm2 | 3 |
| Collector Current | IC(ON) | 0.18 |  |  | mA | IF=10mA, VCE=5V | 3 |
| Power Dissipation (input emitter) | Pd |  |  | 75 | mW | Ta=25℃ free air temperature | 3 |
| Reverse Voltage (input emitter) | VR |  |  | 5 | V |  | 3 |
| Forward Current | IF |  |  | 50 | mA |  | 3 |
| Power Dissipation (output detector) | Pd |  |  | 75 | mW | Ta=25℃ free air temperature | 3 |
| Collector-Emitter Voltage | VCEO |  |  | 35 | V |  | 3 |
| Emitter-Collector Voltage | VECO |  |  | 5 | V |  | 3 |
| Collector Current | IC(ON) |  |  | 20 | mA |  | 3 |
| Operating Temperature | Topr | -25 |  | 85 | ℃ |  | 3 |
| Storage Temperature | Tstg | -40 |  | 85 | ℃ |  | 3 |
| Lead Soldering Temperature | Tsol |  |  | 240 | ℃ | 2mm from form body, 5 s | 3 |

## CAD (KiCad official)

- Symbol: `ZGY1203DT50A`
- Footprint: `Package_DIP:DIP-4_W7.62mm`
- 3D model: DIP-4 (KiCad packages3D, STEP)
- 3D model files: `zgy1203dt50a-etched.step` / `zgy1203dt50a-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `zgy1203dt50a.step` / `zgy1203dt50a.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Chau Light datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8755861784991272960) (9 pp, sha256 `fe8a9f403c13313a`, retrieved 2026-10-15, 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/zgy1203dt50a-datasheet.pdf)