Littelfuse HE3600 Series 5V dc SPST-NO Reed Relay

The Littelfuse HE3600 Series 5V dc Reed Relay is a single pole, normally open (SPST-NO) switching component enclosed in a durable, epoxy-moulded, single-in-line package. Designed for reliability and space efficiency, its slim profile allows for dense PCB layouts, enabling mounting on centres as tight as 0.2 inches. This through-hole mount relay is engineered for precise low-power switching applications, offering a dependable solution for controlling circuits where signal integrity and compact design are paramount.

Featuring a 5V DC coil with a resistance of 500 ohms, it is optimised for use in standard low-voltage digital logic environments. The relay boasts a robust switching capability, handling a maximum current of 500mA and a maximum voltage of 200V. This makes it a versatile component suitable for interfacing between low-voltage control circuits and higher-power loads or for signal isolation.

The epoxy moulding provides excellent environmental protection, safeguarding the internal reed switch mechanism from dust, moisture, and mechanical stress. Its through-hole mounting ensures a secure and stable connection on printed circuit boards, suitable for wave soldering processes in volume manufacturing. The absence of a built-in suppression diode offers design flexibility, allowing engineers to select an external diode tailored to their specific flyback protection needs.

With its combination of a compact footprint, reliable reed switch technology, and robust electrical specifications, the Littelfuse HE3600 Series relay is an ideal choice for a wide range of electronic designs, from industrial control systems and telecommunications equipment to test and measurement instruments and security devices.