RI-46 Series Dry Reed Switch RI-46 Series Micro dry-reed switch hermetically sealed in a gas-filled glass enve- lope. 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 electromag- net, 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 Dimensions in inches (mm) General data for all models RI-46 AT-Customization / Preformed Leads Loaded conditions (resistive load: 20 V 500 mA Besides the standard models, customized products can operating frequency: 125 Hz) also be supplied offering the following options: Operate and release ranges to customer specification RI-46AA Cropped and/or preformed leads 7 Life expectancy: min. 10 operations with a failure rate -8 Coils of less than 10 with a confidence level of 90%. All characteristics are measured using the Philips End of life criteria: Standard Coil. For definitions of the Philips Standard Contact resistance > 2 after 2.5 ms Coil, refer to Application Notes in the Reed Switch Release time > 2.5 ms (latching or contact sticking). Technical & Application Information Section of this catalog. RI-46A RI-46B RI-46C Life expectancy and reliability 7 Life expectancy: min. 2.5 x 10 operations with a failure The life expectancy data given below are valid for a coil -8 rate of less than 10 with a confidence level of 90%. energized at 1.5 times the published maximum operate value for each type in the RI-46 series. End of life criteria: No-load conditions (operating frequency: 100 Hz) Contact resistance > 2 after 2.5 ms 8 Life expectancy: min. 10 operations with a failure rate Release time > 2.5 ms (latching or contact sticking). -9 Switching different loads involves different life expect- of less than 10 with a confidence level of 90%. ancy and reliability data. Further information is avail- End of life criteria: able on request. Contact resistance > 1 after 2 ms Release time > 2 ms (latching or contact sticking). COTO TECHNOLOGY (USA) Tel: (401) 943-2686 / Fax (401) 942-0920 (Europe) Tel: +31-45-5439343 / Fax +31-45-5427216 106RI-46 Series Dry Reed Switch Model Number RI-46AA RI-46A RI-46B RI-46C Parameters Test Conditions Units Operating Characteristics Operate Range AT 10.5-19 15-28 24-51 46-70 Release Range AT 4-12 5-16 8-20.5 12-22.5 Operate Time - including bounce (typ.) (energization) ms 0.35 (24 AT) 0.35 (35 AT) 0.35 (64 AT) 0.35 (87.5 AT) Bounce Time (typ.) (energization) ms 0.15 (24 AT) 0.15 (35 AT) 0.15 (64 AT) 0.15 (87.5 AT) Release Time (max) (energization) s 30 (24 AT) 30 (35 AT) 30 (64 AT) 30 (87.5 AT) Resonant Frequency (typ.) Hz 3200 3200 3200 3200 Electrical Characteristics Switched Power (max) W 30 30 40 40 Switched Voltage DC (max) V 200 200 200 200 Switched Voltage AC, RMS value (max) V 200 200 250 250 Switched Current DC (max) note 1 mA 750 1000 1000 1000 Switched Current AC, RMS value (max) note 1 mA 750 1000 1000 1000 Carry Current DC AC, RMS value (max) A 2 2.5 3 3 Breakdown Voltage (min) V 300 400 580 780 Contact Resistance (initial max) (energization) m 90 (27 AT) 90 (27 AT) 90 (36AT) 90 (36 AT) Contact Resistance (initial typ.) (energization) m 60 (27 AT) 60 (27 AT) 60 (36 AT) 60 (36 AT) Contact Capacitance (max) without test coil pF 0.2 0.2 0.2 0.2 6 6 6 6 10 10 10 10 Insulation Resistance (min) RH 45% M 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 Operating ambient temperature min: -55C max: tinned net mass is approximately 280 mg and can be +125C. Storage temperature min: -55C max: mounted in any position. +125C. Note: Temperature excursions up to 150C may be permissible. For more information contact your Shock nearest Coto Technology sales office. The switches are tested in accordance with IEC 68-2- Soldering 27, test Ea (peak acceleration 500 G, half sinewave duration 11 ms). Such a shock will not cause an open The switch can withstand soldering heat in accordance switch (no magnetic field present) to close, nor a switch with IEC 68-2-20, test Tb, method 1B: solder bath at kept closed by an 80 AT coil to open. 350 10C for 3.5 0.5 s. Solderability is tested in accordance with IEC 68-2-20, test Ta, method 3: Vibration solder globule temperature 235C ageing 1b: 4 hours The switches are tested in accordance with IEC 68-2- steam. 6, test Fc (acceleration 10 G below cross-over fre- Welding quency 57 to 62 Hz amplitude 0.75 mm frequency The leads can be welded. range 10 to 2000 Hz, duration 90 minutes). Such a vibration will not cause an open switch (no magnetic Mounting field present) to close, nor a switch kept closed by an The leads should not be bent closer than 1 mm to the 80 AT coil to open. glass-to-metal seals. Stress on the seals should be avoided. Care must be taken to prevent stray magnetic Mechanical Strength fields from influencing the operating and measuring The robustness of the terminations is tested in accor- conditions. dance with IEC 68-2-21, test Ua (load 40 N). 1 For Most Recent Data, Consult the Coto Technology Website: www.cotorelay.com E-mail: info cotorelay.com 107