Vishay TSML1000/20/30/40 Series IR Emitting Diodes. The TSML10x0 family, from Vishay Semiconductor, are high power Infrared (IR) emitting diodes. With a wavelength of 940nm, the TSML10x0 IR LEDs offer a high radiant power. They are in a surface mount (SMT) package with a clear, untinted plastic package with dome lens. Suitable applications for the TSML10x0 IR emitters include; remote control, punched tape readers, encoders and photointerrupters. TSML1000 - Reverse gull-wing TSML1020 - Gull-wing TSML1030 - Yoke leads TSML1040 - Axial leads. Features of the TSML10x0 IR LEDs: Dimensions: 2.5 x 2 x 2.7 mm Peak wavelength: 940 nm High radiant power and intensity Beam angle: 24° Low forward voltage