Datasheet

RI-48V Series Dry Reed Switch
RI-48V Series
Micro dry-reed switch hermetically sealed in a vacuum envelope. Single-pole,
single-throw (SPST) type, having normally open contacts, and containing
two magnetically actuated reeds.
e switch is of the double-ended type and may be actuated by an electro-
magnet, a permanent magnet or a combination of both.
e device is intended for use in sensors, relays, pulse counters or similar
devices.
RI-48V Series Features
▪ High voltage breakdown type
▪ Can handle up to 40W load
▪ Contact layers; Gold, sputtered ruthenium
▪ Superior glass-to-metal seal and blade alignment
▪ Excellent life expectancy and reliability
Dimensions for RI-48V Series
All Dimension in inches (mm) nominal
General data for all models RI-48V
AT-Customization / Performed Leads
Besides the standard models, customized products can also
be supplied oering the following options:
• Operate and release ranges to customer specication
• Cropped and/or performed leads
Coils
All characteristics are measured using the Philips Standard
Coil. For denitions of the Philips Standard Coil, refer to
“Application Notes” in the Reed Switch Technical & Applica-
tion Information Section of this catalog.
Life expectancy and reliability
e 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-48V series.
No load conditions (operating frequency:
100Hz)
Life expectancy: min. 10
8
operations with a failure rate of
less than 10
-9
with a condence 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: 20 V; 500
mA; operating frequency: 125 Hz)
RI-48V (Operate Sensitivity 10-25 AT)
Life expectancy: min. 10
7
operations with a failure rate of
less than 10
-8
with a condence level of 90%.
End of life criteria:
Contact resistance > 2Ω after 2.5 ms
Release time > 2.5 ms (latching or contact sticking).
RI-48V (Operate Sensitivity >25 AT)
Life expectancy: min. 10 x 10
7
operations with a failure
rate of less than 10
-8
with a condence level of 90%.
End of life criteria:
Contact resistance > 2Ω after 2.5 ms
Release time > 2.5 ms (latching or contact sticking).
Switching dierent loads involves dierent life expectancy
and reliability data. Further information is available on
request.
Mechanical Data
Contact arrangement is normally open; lead nish is
0.026 max
(Ø0.65)
1.079 ± 0.020
(27.4 ± 0.5)
2.157 ± 0.020
(54.8 ± 0.5)
0.807 max
(20.5)
0.106 max
(Ø2.7)
formerly
USA Tel: +(1)973 777 6900 / Fax: +(1) 973 777 8405 ▪ Belgium Tel: + 32 (0)12 390400
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