Miniature high voltage reed relay suits a wide range of applications

Pickering Electronics has released a new high-temperature high voltage single-in-line reed relay that can operate at up to 125C. The new Series 104HT relay belongs to a family of miniature high voltage reed relays and is available in the SIL package on a 6.35mm (0.25") pitch, with a stand-off voltage capability of up to 4kV.

“High temperature can significantly affect the performance of reed relays, and many devices are only able to operate at up to 85C. By designing these devices with increased magnetic drive and using specialist potting materials to sustain insulation resistance, Pickering can now offer reed relays that perform at elevated temperatures and which can be stored at up to 150C.” Said Kevin Mallett, technical specialist at Pickering Electronics.

The reed relays provide internal mu-metal screening, effectively countering any magnetic interference. As an added option, electrostatic shielding is also offered. These versatile relays come in a variety of configurations, including 1 Form A, 2 Form A and 1 Form B, and can be fitted with coils of either 5, 12 or 24V, with optional internal diode protection.

With four types of dry switches to choose from, these relays can stand off 1.5, 2, 3 or 4kV DC. For those requiring higher stand-off voltages, the 3kV and 4kV versions have been designed with an increased clearance between the switch and coil pins to accommodate the higher voltage. If the user requires even higher voltage ratings, Pickering provides a variety of build options or fully customised designs tailored to meet unique requirements. Mercury-wetted devices are also offered for applications where bounce-free switching is required. These are rated at 1500VDC minimum stand-off, 500VDC switching at up to 50W.

For users needing a reliable reed relay that can perform well in high-temperature environments, the new high-temperature, high-voltage reed relays are worth considering. Ideal for a variety of applications, including mixed-signal semiconductor testers, EVs, high-end cable testers, backplane testers, medical electronics, solar energy and high-voltage instrumentation.