An NIR red-enhanced photodiode-preamplifier has been unveiled by Opto Diode Corp. The ODA-5W-100K measures 5 mm2 and offers 500 MΩ gain (customized gains are available upon request), low noise and a large active area. The NIR wavelength response at 940 nm is typically 63 V/mW. The device is packaged in a hermetically sealed TO-39 can and can be stored and operated at temperatures ranging from –25 to 100 °C. Applications include testing and measurement.