ΦΩΤΟΔΙΑΚΟΠΤΗΣ 175487-3

Ricoh AW020021 is a transmissive photointerrupter with a 3.18 mm slot, delivering precise object detection through an infrared emitter and phototransistor pair. Its through-hole design ensures stable mounting for industrial and office equipment.

Advantages

This sensor offers a fast 15 µs rise and fall time, enabling responsive detection in high-speed applications. The 935 nm infrared wavelength provides reliable performance with minimal interference from ambient light. With a wide operating temperature range from -40°C to 85°C, it suits demanding environments.

Suitable for

• Printers and copiers for paper path monitoring
• Industrial automation for position sensing
• Office equipment requiring precise object detection
• Encoder and counter applications

Key specifications

• Sensing method: Transmissive
• Output type: Phototransistor
• Number of channels: 1
• Slot width: 3.18 mm
• Emitter wavelength: 935 nm
• Max collector-emitter voltage: 30 V
• Max collector current: 20 mA
• Max emitter forward current: 50 mA
• Typical emitter forward voltage: 1.6 V @ 20 mA
• Rise time: 15 µs (typ)
• Fall time: 15 µs (typ)
• Mounting type: Through hole
• Operating temperature range: -40°C to 85°C
• Aperture size: 0.51 mm
• Dark current: 100 nA (max)
• Collector-emitter saturation voltage: 0.4 V (max)

Recommendations

For integration into OEM designs, verify the mechanical alignment of the slot with the interrupting object. Use a current-limiting resistor for the emitter to ensure long-term reliability. Suitable for high-volume production with wave soldering processes.