59177 Ultra-miniature Overmolded Reed Switches Littelfuse 59177 Ultra-miniature Overmolded Reed Switches are capable of switching 170VDC or 0.25A at up to 10W with no standby power requirement. These switches are available in select sensitivities (operating distances) and are made of thermoset overmold material for added robustness. The 59177 reed switches are designed with hermetically sealed, magnetically operated contacts and operate through non-ferrous materials such as wood, plastic, or aluminum. These switches feature a 175VDC minimum breakdown voltage, 0.30pF typical contact capacitance, and a -40°C to 125°C operating temperature range.