Thanks Ron and Ken for the information. I have lost my reference on these thingies. Jim/W5JO > 1N2637 - 1000V PIV, Max Avr Forward Current 250 ma, Max peak current > ( 1 cycle ) 40 amps, My diode book says that the cap is the anode and > pin 4 is the cathode. > > Hope that helps! > > Ron H