Now with optional electrostatic shielding between the switch and the coil it is now possible 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 intended for applications such 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 S.C.R. or triac gates, they are intended as a suitable 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, although 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.
Further parts with electrostatic shielding reed relays are planned for launch early in 2023.
