Photodiode Array Senses Low Light Levels

Designed for low light level detection applications, the S8593 two-dimensional silicon photodiode array provides very low crosstalk and is for use in spectrophotometers and position detection instruments. The device consists of a 5 x 5 element photodiode array formed by a proprietary micro-machining process. It operates over a spectral range of 320 to 1,000 nm with a peak sensitivity of 0.42 A/W at 720 nm. Typical photo sensitivity is 0.28 A/W at 410 nm. Dark current is 1pA, rise day is 0.2 µA, and typical termination capacitance is 80 pF. The array is housed in a 28-pin DIP ceramic package that measures 35.56 mm long x 15.49 mm wide. Price is $1,000 each in small quantities. For more information, contact HAMAMATSU CORP., Bridgewater, NJ. (800) 524-0504.