RI-29A

RI-29 Series Dry Reed Switch RI-29 Series Pico 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 or similar devices. RI-29 Series Features Can handle up to 20 W load Contact layers: gold, copper, sputtered ruthenium Superior glass-to-metal seal and blade alignment Excellent life expectancy and reliability Dimensions in inches (mm) General data for all models RI-29 AT-Customization / Preformed Leads Loaded conditions (capacitive load: 80 V; 0.1 mA; (700 mA peak); operating frequency: 100 Hz) RI-29AA 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 the Reed Switch Technical & Application Information Section of this catalog. Life expectancy and reliability Life expectancy: min. 107 operations with a failure rate of less than 2 x 10-8 with a confidence level of 90%. End of life criterion: Release time > 2 ms (latching or contact sticking). RI-29A Life expectancy: min. 2 x 107 operations with a failure rate of less than 10-8 with a confidence level of The life expectancy data given below are valid for a 90%. coil energized at 1.25 times the published maximum End of life criterion: operate value for each type in the RI-29 series. Release time > 2 ms (latching or contact sticking). No-load conditions (operating frequency: 100 Hz) Switching different loads involves different life expectancy and reliability data. Further information Life expectancy: min. 2 x 108 operations with a -9 failure rate of less than 10 with a confidence level of is available on request. 90%. Mechanical Data End of life criteria: Contact arrangement is normally open; lead finish is Contact resistance > 1Ω after 2ms tinned; net mass is approximately 100 mg; and can Release time > 2ms (latching or contact sticking). be mounted in any position. 106 COTO TECHNOLOGY (USA) Tel: (401) 943-2686 / Fax (401) 942-0920 6 (Europe) Tel: +31-45-5439343 / Fax +31-45-5427216 RI-29 Series Dry Reed Switch Shock may be permissible. For more information contact your nearest Coto Technology sales office. Soldering The switches are tested in accordance with “IEC 682-27”, 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 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 switches are tested in accordance with “IEC 682-6”, 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 in each direction). 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 leads can be welded. Mounting The robustness of the terminations is tested in accordance with “IEC 68-2-21”, test Ua1 (load 10 N). Operating and Storage Temperature 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. Operating ambient temperature; min: -55°C; max: +75°C. Storage temperature; min: -55°C; max: +125°C. Note: Temperature excursions up to 150°C For Most Recent Data, Consult the Coto Technology Website: www.cotorelay.com 6 E-mail: sales@cotorelay.com 107