CNZ1402A/B and CNZ1403A/B are photocouplers in which a high efficiency GaAs infrared light emitting diode is used as the light emitting element, and a photodiode and a signal processing circuit are integrated on a single chip as the light detecting element. The two elements are arranged facing each other, and objects passing between them are detected.
The CNZ1402A/B and CNZ1403A/B are integrated photosensors (photocouplers) that use a GaAs infrared LED and a photodiode with signal processing on a single chip. They provide contactless object detection with built‑in Schmitt trigger, large output current, and open‑collector outputs. Two variants exist: normally‑ON (CNZ1402A/CNZ1403A) and normally‑OFF (CNZ1402B/CNZ1403B).
The datasheet lists absolute maximum ratings, pin connections, and detailed electrical characteristics such as forward voltage, reverse current, capacitance, and output current. Safety notes warn about the hazardous GaAs material and export regulations, and advise proper disposal and design compliance.
| Reverse voltage (VR) | 3 V |
|---|---|
| Power dissipation (Pp) | 15 mW |
| Output current (To) | 20 mA |
| Output voltage (Vo) | 30 V |
| Supply voltage (Voc) | 16 V |
CNZ1402A and CNZ1403A are normally‑ON type, while CNZ1402B and CNZ1403B are normally‑OFF type.
The maximum reverse voltage rating is 3 V.