RI-05 Series Dry Reed Switch

RI-05 Series

Close differential pico 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 sensors, relays, pulse counters or similar devices.

RI-05 Series Features

▪ Close differential reed switch

▪ Contact layers: ruthenium on gold

▪ Superior glass-to-metal seal and blade alignment

▪ RoHS Compliant

Dimensions for RI-05 Series

All Dimension in inches (mm) nominal

General data for all models RI-05

AT-Customization / Preformed Leads

Besides the standard models, customized products can also

be supplied offering the following options:

• Operate and release ranges to customer specification

• Cropped and/or preformed leads

Coils

All characteristics are measured using the Philips Standard

Coil. For definitions of the Philips Standard Coil, refer

to “Application Notes” in the 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 1.5 times the published maximum operate

value for each type in the RI-05 series.

No load conditions (operating frequency: 100Hz)

Life expectancy: min. 2 x 108 operations with a failure rate

of less than 10-9 with a confidence level of 90%.

End of life criteria:

Contact resistance > 1Ω after 2 ms

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

Loaded conditions (resistive load: 12 V; 4 mA;

(15 mA peak); operating frequency: 170 Hz)

Life expectancy: min. 106 operations.

End of life criteria:

Contact resistance > 2Ω after 4 ms

Release time > 0.7 ms (latching or contact sticking).

Switching different loads involves different life expectancy

and reliability data. Further information is available on

request.

Mechanical Data

Contact arrangement is normally open; lead finish is

tinned; net mass is approximately 100mg;

and can be mounted in any position.

Shock

The switches are tested in accordance with “IEC 68-2-27”,

test Ea (peak acceleration 150 G, half sinewave; duration

11 ms). Such a shock will not cause an open switch (no

magnetic field present) to close, nor a switch kept closed

by an 80 AT coil to open.

0.020 max

(Ø0.50)

0.906 ± 0.020

(23.0 ± 0.5)

1.811 ± 0.020

(46.0 ± 0.5)

0.520 max

(13.2)

0.071 max

(Ø1.8)

tinned

USA Tel: +(1)973 777 6900 ▪ BE Tel: + 32 (0)12 390400 ▪ UK Tel: +44 (0)1255 862236 ▪ USA Tel: +(1)401 830 2100 ▪ NL Tel: +31(0)45 5439345

USA Tel: +(1)800 864 2815 ▪ IN Tel: +(91)(44)42023510

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