IntertechnologyThe TSAL4400 is an infrared (IR) emitter manufactured by Vishay Intertechnology. It is designed for use in a wide range of applications that require high-performance irradiance levels, such as remote control and sensor systems. It has an industry-leading 3mm diameter, making it well-suited for tight spaces. It operates at 940nm wavelength, with 1.35V maximum forward voltage, 100mA forward current, 16mW/sr radiant intensity at 100mA, and a 50° radial viewing angle. The 3mm diameter was achieved using a T-1 package, offering optimal thermal transfer and efficiency. This emitter is suitable for mass-produced consumer electronics applications, and offers a long-lasting, reliable performance.