Pickering adds electrostatic shielding to high voltage miniature reed relay to minimize noise
Pickering Electronics has launched a new variant of its high voltage Series 104 SIL/SIP reed relay family with optional electrostatic shielding between the switch and the coil to help minimise noise between the coil drive and high voltage circuits. This new screening is in addition to Pickering’s internal mu-metal screen which eliminates problems that would otherwise be experienced due to magnetic interaction when devices are closely stacked.
Series 104 reed relays are ideal for such applications as mixed signal semiconductor testers, renewable technologies such as solar or EV battery testing, transformer or cable testing or any other automatic test equipment where high voltages are involved. Where mains voltages are switched, for example to control and isolate SCR or triac gates, they are the ideal choice.
Four types of dry switches are available, capable of standing-off 1.5, 2, 3 and 4kV DC – another new introduction. The 3kV & 4kV versions have an increased clearance between the switch and coil pins to accommodate the higher voltage. Even higher voltage ratings are available to special order. Mercury wetted devices are also available for applications where bounce free switching is required. These latter devices are rated at 1500V DC minimum stand-off, 500VDC switching at up to 50W.
These miniature devices stack on a 6.35mm pitch, can feature one or two switches in a single package and are available in 1 Form A, 2 Form A & 1 Form B configurations with 5 V, 12 V or 24 V coils and optional internal diode.
Commented Kevin Mallett, Technical Specialist at Pickering Electronics: “Our miniature high voltage reed relays continue to be suitable for existing and new high voltage applications, and adding the option of an electrostatic shield to minimise noise between the signal and control circuitry provides extra protection where required”
Further parts with electrostatic shielding reed relays are planned for launch early in 2023.