Datasheet

RI-25 Series Dry Reed Switch
RI-25 Series
Micro dry-reed switch hermetically sealed in a gas-lled glass 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 elec-
tromagnet, a permanent magnet or a combination of both. e device is
intended for use in high load applications in relays or switching devices.
RI-25 Series Features
▪ Can handle up to 25 W load
▪ Contact layers: gold, plated ruthenium
▪ Superior glass-to-metal seal and blade alignment
▪ Excellent life expectancy and reliability
▪ RoHS Compliant
Dimensions for RI-25 Series
All Dimension in inches (mm) nominal
General data for all models RI-25
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 1.25 times the published maximum operate
value for each type in the RI-25 series.
No load conditions (operating frequency:
100Hz)
Life expectancy: min. 3 x 10
8
operations with a failure rate
of less than 0.9 x 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-25AAA
Life expectancy: min. 10
6
operations with a failure rate of
less than 2.5 x 10
-7
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-25AA; RI-25A; RI-25B; RI-25C
Life expectancy: min. 5 x 10
7
operations with a failure rate
of less than 5 x 10
-9
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)
Loaded conditions (resistive load: 50 V; 100mA;
operating frequency: 50 Hz)
Life expectancy: min. 10
6
operations with a failure rate of
less than 2 x 10
-7
with a condence level of 90%.
End of life criteria:
0.024 max
(Ø0.60)
0.906 ± 0.020
(23.0 ± 0.5)
1.811 ± 0.020
(46.0 ± 0.5)
0.570 max
(14.5)
0.100 max
(Ø2.54)
formerly
USA Tel: +(1)973 777 6900 / Fax: +(1) 973 777 8405 ▪ Belgium Tel: + 32 (0)12 390400
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