TEMD5510 Series Ambient Light Sensors. The TEMD5510 series, from Vishay Semiconductors, are a family of ambient light sensors. They consist of a PIN photodiode within a surface mount (SMD) package. The TEMD5510 offers high photo sensitivity and resembles the human eye with its sensitivity to visible light. Suitable applications for the TEMD5510 series include; automotive sensors, ambient light sensors, backlight dimmers, notebook and computers.. Features of the TEMD5510 ambient light sensor: Top looking Surface mounted (SMD) Dimensions: 5 x 4.24 x 1.12 mm Radiant sensitive area: 7.5 mm Peak sensitivity: 540nm High photo sensitivity Near IR radiation filter Angle of half intensity: 65°