The Pickering Series 85 is a general purpose reed relay with a 1 Form C (change-over) switch, 5 V coil, and no internal diode, designed for printed circuit board mounting on a 0.1 inch pin grid. It is encapsulated in a plastic case with an internal mu-metal magnetic screen to prevent magnetic interference. The relay supports dry switch configurations with a maximum contact rating of 3 watts at 200 V for change-over contacts, and carries a maximum switch current of 1.2 A. The coil resistance is 500 Ω, and the device is compatible with TTL drive. It shares the same footprint and pin configuration as the mercury-wetted Series 89, allowing for later uprating without PCB redesign. The relay is mounted vertically and must respect coil polarity when an internal diode is present, though none is included in this variant.
These ranges of reed relays are available with both dry and mercury wetted switches. They are available with 5, 12 and 24 volts coils, a particularly useful feature of the 5 volt dry devices is their ability to be driven directly from TTL, the coil requiring only 10mA of drive current. All units have an internal magnetic screen and can be supplied with built-in diode if required.
Standard coil voltages are 5, 12 and 24 volts. All relays are fitted with internal magnetic screen to avoid stray magnetic interaction between adjacent relays. Many special coil resistances are available, and relays can be designed to customers specific requirements. These Pickering relays fit straight onto P.C. boards with pins on the popular 0.1 inch grid. They are completely protected, being encapsulated in plastic cases. With these series you get the choice of three different dry reed switches and two mercury wetted switches in a range of configurations to cover all switching problems. See Switch Ratings in adjacent column.
The Series 80 and 85 are electrically similar ranges but with alternative pin configurations; these are shown overleaf. Their mercury wetted equivalents are prefixed 88 and 89 respectively..
| Pickering Electronics | |
|---|---|
| Product Category | Electromechanical Relays |
| Product Number | 85-1-C-5/3 |
| Product Name | Series 80 |
| Relay Type | General; Reed Relay |
| Mounting | PCBoard |
| Poles | Single Pole (SP) |
| Throw | Double Throw |
| NO | 0 |
