RI-90 Series Dry Reed Switch

RI-90 Series

Micro changeover dry-reed switch hermetically sealed in a gas-filled

envelope. Single-pole, double-throw (SPDT) type, having a normally open

and a normally closed contact.

The switch 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-90 Series Features

▪ Ideal for ATE switching and proximity sensors

▪ Contact layers: Ruthenium on gold

▪ Superior glass-to-metal seal and blade alignment

▪ Excellent life expectancy and reliability

▪ RoHS Compliant

Dimensions for RI-90 Series

All Dimension in inches (mm) nominal

General data for all models RI-90

AT-Customization / Performed 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 performed 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 1.25 times the published maximum operate

value for each type in the RI-90 series.

No load conditions (operating frequency:

100Hz)

Life expectancy: min. 108 operations with a failure rate of

less than 2 x 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).

Operating and Storage Temperature

Operating ambient temperature; min: -55°C; max:

+125°C. Storage temperature; min: -55°; max: +125°C.

Note: Temperature excursions up to 150°C may be

permissible. For more information contact your nearest

Comus Group sales office.

Soldering

The switch can withstand soldering heat in accordance

with “IEC 68-2-20”, test Tb, method 1B: solder bath at

350 ± 10°C for 3.5 ± 0.5 s. Solderability is tested in

accordance with “IEC 68-2-20” test Ta, method 3: solder

globule temperature 235°C; ageing 1b: 4 hours steam.

Welding

The leads can be welded.

formerly

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Ø.023 MAX

(.60)

Ø.023 MAX

(.60)

.100 MAX (2.54)

.100 MAX (2.54)

1.00 ± .020 (25.4 ± 0.5)

1.00 ± .020 (25.4 ± 0.5)

1.956 ± .019 (49.7 ± 0.5)

.563 MAX (14.3)

.563 MAX (14.3)

1.988 ± .019 (50.5 ± .6)

.685 MAX (17.4)

.059 (1.5) ref

Ø.020 MAX (.50)

Ø.020 MAX (.50)

Ø.020 MAX (.50)

Ø.020 MAX (.50)

.768 (19.5) ref

.059 (1.5)

.003 ± .019 (0.8 ± 0.5)

.738 ± .009 (18.75 ± 0.25)

NC Lead

NC Lead

NO Lead

NO Lead

.100 ± .009 MAX (2.54 ± 0.25)