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RI-80 Series Dry Reed Switch
RI-80 Series Ultra-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 permanent magnet or a combination of both. The device is intended for use in sensors, relays, pulse counters or similar devices.
RI-80 Series Features Ideal for ATE switching, proximity sensors & medical applications World's smallest high quality reed switch Contact layers: Gold, sputtered ruthenium Superior glass-to-metal seal and blade alignment
Dimensions in inches (mm)
General data for all models RI-80
AT-Customization / Preformed Leads
End of life criteria: Contact resistance > 1 after 2 ms Release time > 2ms (latching or contact sticking).
Loaded conditions (Resistive load: 5V; 100 mA; operating frequency: 170 Hz)
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, see Reed Technical & Application Information Section of this catalog.
Life expectancy and reliability
Life expectancy: min. 107operations with a failure rate of less than 10-8 with a confidence level of 90%. End of life criteria: Contact resistance > 2 after 4 ms Release time > .7 ms (latching or contact sticking) Switching different loads involves different life expectancy and reliability data. Further information available upon request.
Mechanical Data
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-80 series.
No-load conditions (operating frequency: 100 Hz)
Life expectancy: min. 10 operations with a failure rate of less than 2 x10-9 with a confidence level of 90%.
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Contact arrangement is normally open; lead finish is tinned; net mass is approximately 65mg; and can be mounted in any position.
6 (Europe) Tel: +31-45-5439343 / Fax +31-45-5427216
COTO TECHNOLOGY (USA) Tel: (401) 943-2686 / Fax (401) 942-0920
RI-80 Series Dry Reed Switch
Model Number Parameters Operating Characteristics
Operate Range Release Range Operate Time - including bounce (typ.) Bounce Time (typ.) Release Time (max) Resonant Frequency (typ.) AT AT ms ms s Hz 5-15 2-13 0.35 (20 AT) 0.1 (20 AT) 20 (20 AT) 21.300 RI-80
Test Conditions
Units
Electrical Characteristics
Switched Power (max) Switched Voltage DC (max) Switched Voltage AC, RMS value (max) Switched Current DC (max) Switched Current AC, RMS value (max) Carry Current DC; AC, RMS value (max) Breakdown Voltage (min) Contact Resistance (initial max) Contact Resistance (initial typ.) Contact Capacitance (max) Insulation Resistance (min) W V V mA mA A V m m pF M 5 200* 140 350 250 0.5 230 160 (20 AT) 140 (20 AT) 0.45 106
(energization) (energization) without test coil RH 45%
* Only for switches with AT operate value > 10AT
Shock
Storage temperature; min: -55C; max: +125C.
Note: Temperature excursions up to 150C may be permissible. For more information contact your nearest Coto Technology sales office. Soldering
The switches are tested in accordance with "IEC 68-2-27", test Ea (peak acceleration 150 G, half sinewave; duration 11 ms). Such a shock will not cause an open switch (no magnetic field present) to close nor a switch kept closed by an 80 AT coil to open.
Vibration
The switches are tested in accordance with "IEC 68-2-6", test Fc (acceleration 10G; below crossover frequency 57 to 62 Hz; amplitude 0.75 mm; frequency range 10 to 2000 Hz, duration 90 minutes.) Such a vibration will not cause an open switch (no magnetic field present) to close, nor a switch kept closed by an 80 AT coil to open.
Mechanical Strength
The switch can withstand soldering heat in accordance with "IEC 68-2-20", test Tb, method 1B: solder bath at 350 10C for 3.5 0.5 s. Solderability is tested in accordance with "IEC 68-220" test Ta, method 3: solder globule temperature 235C; ageing 1b: 4 hours steam.
Welding
The leads can be welded. The robustness of the terminations is tested in accordance with "IEC 68-2-21", test Ua1 (load 10N).
Operating and Storage Temperature Mounting
Operating ambient temperature; min: -55C; max: +125C.
The leads should not be bent closer than 1 mm to the glass-to-metal seals. Stress on the seals should be avoided. Care must be taken to prevent stray magnetic fields from influencing the operating and measuring conditions.
6 E-mail: info@cotorelay.com
For Most Recent Data, Consult the Coto Technology Website: www.cotorelay.com
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