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| RI-02 Series Dry Reed Switch RI-02 Series Ultra-miniature dry-reed switch hermetically sealed in a gasfilled 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, sensors, pulse counters or similar devices. RI-02 Series Features Ideal for General Purpose reed relays and sensors Contact layers: ruthenium on gold Superior glass-to-metal seal and blade alignment General data for all models RI-02 AT-Customization / Preformed Leads Dimensions in inches (mm) Loaded conditions (resistive load: 5V; 100 mA; operating frequency: 125 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, refer to "Application Notes" in the Reed Switch Technical & Application Information Section of this catalog. Life expectancy and reliability Life expectancy: min. 2 x 106 operations with a failure rate of less than 10-8 with a confidence level of 90%. End of life criteria: Contact resistance > 1 after 2.5 ms Release time > 1 ms (latching or contact sticking). Loaded conditions (resistive load: 20V; 500 mA; operating frequency: 125 Hz) Life expectancy: min. 2 x 106 operations with a failure rate of < 10-7 with a confidence level of 90%. End of life criteria: Contact resistance > 2 after 2.5 ms Release time > 2.5 ms (latching or contact sticking). Switching different loads involves different life expectancy and reliability data. Further information is available on request. 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-02 series. No-load conditions (operating frequency: 100 Hz) Life expectancy: min.108 operations with a failure rate of less than 2 x10-10 with a confidence level of 90%. End of life criteria: Contact resistance > 1 after 2 ms Release time > 2ms (latching or contact sticking). 122 COTO TECHNOLOGY (USA) Tel: (401) 943-2686 / Fax (401) 942-0920 6 (Europe) Tel: +31-45-5439343 / Fax +31-45-5427216 RI-02 Series Dry Reed Switch Mechanical Data Operating and Storage Temperature Contact arrangement is normally open; lead finish is tinned; net mass is approximately 90mg; and can be mounted in any position. Shock Operating ambient temperature; min: -55C; max: +125C. 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 68-227", 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 68-226", test Fc (acceleration 10G; below cross-over 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 10 C for 3.5 0.5 s. Solderability is tested in accordance with "IEC 68-2-20" test Ta, method 3: solder globule temperature 235C; ageing 1b: 4 hours steam. Welding The leads can be welded. Mounting The robustness of the terminations is tested in accordance with "IEC 68-2-21", test Ua1 (load 10 N). 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: sales@cotorelay.com For Most Recent Data, Consult the Coto Technology Website: www.cotorelay.com 123 |
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