This HASCO COMPONENTS part S1A05 is a high-quality Reed Relay designed for applications requiring a compact and reliable switching solution. Operating at a voltage of 5VDC, with a contact resistance of 500Ohm and a maximum current rating of 0.5A, this SPST-NO (Single Pole Single Throw-Normally Open) relay offers dependable performance. The compact dimensions of 19.8x5x7.62mm make it suitable for space-constrained environments. With Through-Hole Technology (THT) and dry reed contacts, this relay ensures efficient and durable operation.