100

COTO TECHNOLOGY (USA) Tel: (401) 943-2686 / Fax (401) 942-0920

6 (Europe) Tel: +31-45-5439343 / Fax +31-45-5427216

RI-70 Series Dry Reed Switch

RI-70 Series

Ultra-miniature dry-reed switch hermetically sealed in a gas-filled glass

envelope. Single-pole, single-throw (SPST) type, having normally

open contacts, and containing two magnetically actuated reeds.

The switch is of the double-ended type and may be actuated by an

electromagnet, a permanent magnet or a combination of both.

The device is intended for use in relays, sensors, pulse counters or

similar devices.

RI-70 Series Features

Ideal for ATE switching

7 mm glass length

Contact layers: gold, sputtered ruthenium

Superior glass-to-metal seal and blade alignment

Excellent life expectancy and reliability

General data for all models RI-70

AT-Customization / Preformed Leads

Besides the standard models, customized products can

also be supplied offering the following options:

Coils

All characteristics are measured using the Philips

Standard Coil. For definitions of the Philips Standard

Coil, see

Reed Switch Technical & Application Information

Section of this catalog.

Life expectancy and reliability

The life expectancy data given below are valid for a coil

energized at 1.25 times the published maximum operate

value for each type in the RI-70 series.

No-load conditions (operating frequency: 100 Hz)

End of life criteria:

Contact resistance > 1

Ω after 2 ms

Release time > 2ms (latching or contact sticking).

Loaded conditions (resistive load: 5 V; 100 mA;

operating frequency: 125 Hz)

End of life criteria:

Contact resistance > 1

Ω after 2.5 ms

Release time > 1 ms (latching or contact sticking).

Loaded conditions (resistive load: 20 V; 500 mA;

operating frequency: 125 Hz)

End of life criteria:

Contact resistance > 2

Ω after 2.5 ms

Release time > 2.5 ms (latching or contact sticking).

Switching different loads involves different life expect-

ancy and reliability data. Further information is avail-

able on request.

Dimensions in inches (mm)