RI-48 Datasheet, PDF (1/2 Pages) Coto Technology – Dry Reed Switch

RI-48 Series Dry Reed Switch
RI-48 Series
Micro 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 perma-
nent magnet or a combination of both.
The device is intended for use in relays for switching power loads and
high stand-off voltage applications.
RI-48 Series Features
Perfect heavy load switch
Can handle loads up to 70 Watts
Contact layers: gold, sputtered ruthenium
Superior glass-to-metal seal and blade alignment
Excellent life expectancy and reliability
General data for all models RI-48
Dimensions in inches (mm)
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.
Loaded conditions (resistive load: 20 V; 500 mA;
operating frequency: 125 Hz)
RI-48AA
Life expectancy: min. 10⁷ operations with a failure rate
of less than 10^-8 with a confidence level of 90%.
End of life criteria:
Contact resistance > 2Ω after 2.5 ms
Release time > 2.5 ms (latching or contact sticking).
RI-48A; RI-48B; RI-48C
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-48 series.
No-load conditions (operating frequency: 100 Hz)
Life expectancy: min. 10⁸ operations with a failure rate
of less than 10^-9 with a confidence level of 90%.
Life expectancy: min. 2.5 x 10⁷ operations with a failure
rate of less than 10^-8 with a confidence level of 90%.
End of life criteria:
Contact resistance > 2Ω after 2.5 ms
Release time > 2.5 ms (latching or contact sticking).
Loaded conditions (resistive load: 100 V-700 mA;
operating frequency: 20 Hz)
End of life criteria:
Contact resistance > 1Ω after 2 ms
Release time > 2 ms (latching or contact sticking).
RI-48B; RI-48C
Life expectancy: min. 3x10⁵ operations with a failure
rate of less than 10^-6 with a confidence level of 90%.
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