Sic Based UV Broadband Photodiodes

1.Properties of the SG01D–18 UV photodiode
• Broadband UVA+UVB+UVC, PTB reported high chip stability
• Active Area A = 0,50 mm2
• TO18 hermetically sealed metal housing, 1 isolated pin and 1 case pin
• 10μW/cm2 peak radiation results a current of approx. 6,5 nA

2.About the material Silicon Carbide (SiC)
SiC  provides  the  unique  property  of  extreme  radiation  hardness,  near-perfect  visible  blindness,  low  dark  current, high speed and low noise. These features make SiC the best available material for visible blind semiconductor UV de-tectors. The SiC detectors can be permanently operated at up to 170°C (338°F). The temperature coefficient of signal (responsivity)  is  also  low, < 0,1%/K.  Because  of  the  low  noise  (dark  current  in  the  fA  range),  very  low  UV  radiation intensities can be measured reliably. Please note that this device needs an appropriate amplifier (see typical circuit on page 3).

3.Options
SiC photodiodes are available with seven different active chip areas from 0,06 mm2 up to 36 mm2. Standard version is broadband UVA-UVB-UVC. Four filtered versions lead to a tighter sensitivity range. All photodiodes have a hermeti-cally sealed metal housing (TO type), either a 5,5 mm diameter TO18 housing or a 9,2 mm TO5 housing. Further op-tion is either a 2 pin header (1 isolated, 1 grounded) or a 3 pin header (2 isolated, 1 grounded).