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COTO TECHNOLOGY (USA) Tel: (401) 943-2686 / Fax (401) 942-0920 6 (Europe) Tel: +31-45-5439343 / Fax +31-45-5427216
RI-29 Series Dry Reed Switch
RI-29 Series
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 relays or similar devices.
RI-29 Series Features
Can handle up to 20 W load
Contact layers: gold, copper, sputtered ruthenium
Superior glass-to-metal seal and blade alignment
Excellent life expectancy and reliability
General data for all models RI-29
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 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-29 series.
No-load conditions (operating frequency: 100 Hz)
Life expectancy: min. 2 x 10
8
operations with a
failure rate of less than 10
-9
with a confidence level of
90%.
End of life criteria:
Contact resistance > 1
Ω after 2ms
Release time > 2ms (latching or contact sticking).
Loaded conditions (capacitive load: 80 V; 0.1 mA;
(700 mA peak); operating frequency: 100 Hz)
RI-29AA
Life expectancy: min. 10
7
operations with a failure
rate of less than 2 x 10
-8
with a confidence level of
90%.
End of life criterion:
Release time > 2 ms (latching or contact sticking).
RI-29A
Life expectancy: min. 2 x 10
7
operations with a
failure rate of less than 10
-8
with a confidence level of
90%.
End of life criterion:
Release time > 2 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 100 mg; and can
be mounted in any position.
Dimensions in inches (mm)
