Maximum voltage of Zener diode when fuseblows 28 V Minimum value of terminating resistor 300 W Maximum short-circuit current 93 mA Number of Channels 2 Maximum end-to-end resistance 333 W Working Voltage 26.6 V Maximum Voltage 27.2 V Fuse Rating (continuous) 50 mA Operating Temperature Range -20 °C to + 60 °C (continuous working) Storage Temperature Range -40 °C to + 80 °C Maximum Humidity 95%RH - Non Condensing (at 40 °C) Weight (g) / Dimensions (mm) 140 / H90 x W105 x D12.6 Mounting Methods DX070 Box, SMB-2 or SMB-3 Enclosures