RI-46A

RI-46 Series Dry Reed Switch RI-46 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 permanent magnet or a combination of both. The device is intended for use in relays, sensors, pulse counters or similar devices. RI-46 Series Features Can switch main voltage Can handle up to 40 W load Contact layers: gold, sputtered ruthenium Superior glass-to-metal seal and blade alignment Excellent life expectancy and reliability General data for all models RI-46 AT-Customization / Preformed Leads Dimensions in inches (mm) Loaded conditions (resistive load: 20 V; 500 mA; operating frequency: 125 Hz) RI-46AA 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 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-46A; RI-46B; RI-46C 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 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-46 series. No-load conditions (operating frequency: 100 Hz) 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). Switching different loads involves different life expectancy and reliability data. Further information is available on request. Life expectancy: min. 108 operations with a failure rate of less than 10-9 with a confidence level of 90%. End of life criteria: Contact resistance > 1Ω after 2 ms Release time > 2 ms (latching or contact sticking). COTO TECHNOLOGY (USA) Tel: (401) 943-2686 / Fax (401) 118 942-0920 6 (Europe) Tel: +31-45-5439343 / Fax +31-45-5427216 RI-46 Series Dry Reed Switch Note 1: Switching higher currents is possible depending on signature of the load. Mechanical Data Operating and Storage Temperature Contact arrangement is normally open; lead finish is tinned; net mass is approximately 280 mg; and can be mounted in any position. Shock Operating ambient temperature; min: -55°C; max: +125°C. Storage temperature; min: -55°C; max: +125°C. Note: Temperature excursions up to 150°C 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 500 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 68-26”, test Fc (acceleration 10 G; 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 235°C; 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 40 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 119