The E103SYCQE is a sealed miniature SPDT toggle switch featuring an on-off-on switching function, designed for use in telecommunications, instrumentation, and medical equipment. The switch is sealed against solder and cleaning process contaminants with an epoxy terminal seal and UL 94V-0 nylon case and bushing, ensuring reliable performance in harsh manufacturing environments. It features gold-plated contacts with contact resistance below 10 mO typical at 2–4 V DC and 100 mA, an insulation resistance of 10? O minimum, and dielectric strength of 1000 Vrms minimum. The switch is rated for 7.5 amps at 125 V AC or 28 V DC, with 3 amps at 250 V AC, and provides 40,000 make-and-break cycles at full load electrical life. Its compact design with epoxy-sealed terminals and nickel-plated brass hardware makes it ideal for applications requiring high reliability and environmental protection in compact spaces.