The 1617128-4 is a high-performance, sensitive TO-5 low signal relay from the MSD series, designed for reliable switching. It features a double-pole, double-throw (DPDT) contact arrangement with a resistive contact rating of 1.0 A at 28 Vdc. The relay operates with a nominal coil voltage of 26.5 Vdc and includes an internal suppression diode to protect coil drive circuits. This hermetically sealed component is built for high shock (75 G's) and vibration (30 G's) resistance, operating over a temperature range of -65°C to +125°C. With its excellent RF switching capabilities, it is suitable for military, aerospace, and other high-reliability applications.