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OP240A

OP240A

TT Electronics/Optek Technology
Infrared (IR) Emitter 890nm 1.8V 50mA 40° Radial
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Overview

The OP240A is a high-intensity infrared emitting diode housed in a side-looking plastic package designed for space-constrained sensing applications. Operating at an 890nm peak wavelength, it provides a reliable light source for non-contact sensing and optical interruption tasks. The device features a 40-degree viewing angle and is rated for a maximum forward current of 50mA.

Why Choose This Part

The side-view orientation allows for low-profile mounting on PCBs where vertical height is restricted. With a typical forward voltage of 1.8V and a broad operating temperature range of -40 to 100 degrees Celsius, it is suitable for rugged industrial environments. The 40-degree beam pattern provides a balance between intensity and alignment tolerance.

Applications

Optical Encoders
Used as the emitter source in rotary or linear encoders to track position and speed.
Limit Switch Sensing
Ideal for end-of-travel detection in automated machinery and printers.
Reflective Sensors
Works in conjunction with phototransistors for object detection and proximity sensing.
Paper Path Monitoring
Detection of media presence and alignment in office automation equipment.

Key Specifications

Type Infrared (IR)
Wavelength 890nm
Orientation Side View
Mounting Type Through Hole
Viewing Angle 40deg
Package / Case Radial
Operating Temperature -40degC ~ 100degC (TA)
Voltage - Forward (Vf) (Typ) 1.8V
Current - DC Forward (If) (Max) 50mA

Getting Started

To integrate the OP240A, ensure a current-limiting resistor is placed in series to maintain the forward current below the 50mA maximum rating. For pulse-width modulation applications, consult the datasheet for peak current limits and duty cycle restrictions. Alignment with the corresponding phototransistor or photodiode is critical due to the 40-degree viewing angle.