HV Vacuum Encapsulated S Series, PCB Mount. These high voltage reed relays have a compact 30mm size package so are ideal for use where PCB space is at a premium. They offer a low contact resistance and are suitable for many high voltage applications at DC and low frequency. Compact footprint Designed for high voltage applications Rhodium contacts offer low resistance Long life: dry switching - 10 9 operations, 10W switching - 10 8 operations