## Overview

The Vishay SFH615AA-X007 is a high-speed infrared emitter designed for use in optical communication and sensing applications. It is part of Vishay’s SFH615 series and provides a robust infrared light source optimized for pulse operation. This device features a GaAsP (Gallium Arsenide Phosphide) emitter in a T-1 3/4 (5 mm) package with a clear lens, enabling precise light emission and efficient coupling with optical systems. It is suitable for high-speed switching, remote controls, optoelectronic encoders, and other communication applications requiring short rise and fall times.

## Absolute Maximum Ratings

* Forward Current (Continuous): 50 mA
* Peak Forward Current (Pulse, 100 μs, 1% duty cycle): 500 mA
* Reverse Voltage: 5 V
* Power Dissipation: 100 mW
* Operating Temperature Range: -40 °C to +85 °C
* Storage Temperature Range: -40 °C to +100 °C

These ratings indicate the operational boundaries of the device to prevent damage or degradation over time. Exceeding these limits can result in permanent damage to the emitter.

## Electrical and Optical Characteristics

* Forward Voltage (VF): 1.2 V typical at 20 mA forward current
* Reverse Current (IR): ≤ 100 μA at 5 V reverse voltage
* Radiant Intensity (IE): 100 mW/sr typical at 20 mA forward current
* Peak Wavelength (λp): 950 nm typical
* Spectral Bandwidth (Δλ): ±30 nm
* Viewing Angle (2θ1/2): 18° typical

The emitter operates efficiently in the near-infrared spectrum, making it compatible with phototransistor receivers and photodiode sensors used in optical communication or remote sensing applications.

## Dynamic and Switching Characteristics

* Rise Time (tr): ≤ 15 ns
* Fall Time (tf): ≤ 15 ns
* Junction Capacitance (Ct): 35 pF typical at 0 V reverse bias, 1 MHz

These characteristics enable high-speed pulse operation, supporting data transmission at significant rates while maintaining signal integrity. Low junction capacitance reduces signal distortion during rapid switching.

## Package and Mechanical Data

* Package Type: T-1 3/4 (5 mm) round epoxy package
* Lens Color: Clear
* Lead Material: Axial tinned copper leads
* Emitter Type: GaAsP infrared diode
* Polarity: Anode connected to longer lead, cathode connected to shorter lead

The compact package allows easy integration into standard PCB layouts and alignment with optical receivers. The clear lens ensures a narrow beam for directed emission.

## Applications

* Remote control systems and infrared communication
* Optoelectronic encoders and sensors
* Industrial automation requiring infrared pulse sources
* Optical data transmission systems
* High-speed switching applications in communication devices

The SFH615AA-X007 is particularly suited for pulsed IR applications where short rise and fall times and moderate radiant intensity are critical for accurate signal detection.

## Thermal Management Considerations

* Maximum forward current and power dissipation must be observed to prevent junction overheating.
* Pulse operation with low duty cycles is recommended to maintain junction temperature within safe limits.
* PCB heat sinking can enhance reliability during repetitive pulsed operation.

Proper thermal design ensures stable performance and prolongs the operational lifetime of the device.

## Reliability and Lifespan

* The device is encapsulated in a durable epoxy lens, providing protection against mechanical stress and environmental conditions.
* Degradation in radiant intensity is minimal under rated operating conditions.
* The GaAsP emitter maintains consistent performance over extended periods, ensuring reliability in industrial and communication systems.

This combination of high-speed performance, directional emission, and robust packaging makes the SFH615AA-X007 a reliable choice for demanding optoelectronic applications.