RI-23 Series Dry Reed Switch RI-23 Series Micro dry-reed switch hermetically sealed in a gas-filled 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-23 Series Features General purpose reed switch Contact layers: Gold, plated ruthenium Superior glass-to-metal seal and blade alignment Excellent life expectancy and reliability Dimensions in inches (mm) General data for all models RI-23 AT-Customization / Preformed Leads Release time > 2 ms (latching or contact sticking). Besides the standard models, customized products can also be supplied offering the following options: Loaded conditions (resistive load: 12 V 4 mA Operate and release ranges to customer (15 mA peak) operating frequency: 170 Hz) specification 7 Life expectancy: min. 10 operations with a failure rate Cropped and/or preformed leads -8 of less than 10 with a confidence level of 90%. Coils End of life criteria: All characteristics are measured using the Philips Contact resistance > 2 after 4 ms Standard Coil. For definitions of the Philips Stan- Release time > 0.7 ms (latching or contact sticking). dard Coil, refer to Application Notes in the Reed Switching different loads involves different life expect- Switch Technical & Application Information Section of ancy and reliability data. Further information is avail- this catalog. able on request. Life expectancy and reliability Mechanical Data The life expectancy data given below are valid for a Contact arrangement is normally open lead finish is coil energized at 1.25 times the published maximum tinned net mass is approximately 190 mg and can be operate value for each type in the RI-23 series. mounted in any position. No load conditions (operating frequency: Shock 100Hz) The switches are tested in accordance with 8 Life expectancy : min. 10 operations with a failure IEC 68-2-27, test Ea (peak acceleration 150 G, half -9 rate of less than 10 with a confidence level of 90%. sinewave duration 11 ms). Such a shock will not cause End of life criteria: an open switch (no magnetic field present) to close, Contact resistance > 1 after 2 ms nor a switch kept closed by an 80 AT coil to open. COTO TECHNOLOGY (USA) Tel: (401) 943-2686 / Fax (401) 942-0920 (Europe) Tel: +31-45-5439343 / Fax +31-45-5427216 98RI-23 Series Dry Reed Switch Model Number RI-23AAA RI-23AA RI-23A RI-23B RI-23C Parameters Test Conditions Units Operating Characteristics Operate Range AT 8-16 14-23 18-32 28-52 46-70 Release Range AT 4-14 7.5-17.5 8-22 12-29 16-32 Operate Time - including bounce (typ.) energization 100 AT ms 0.1 (20AT) 0.25 (29AT) 0.25 (40AT) 0.25 (65AT) 0.25 (88AT) Bounce Time (typ.) energization 100 AT ms 0.05 (20AT) 0.15 (29AT) 0.15 (40AT) 0.15 (65AT) 0.15 (88AT) s Release Time (max) energization 100 AT 70 (20AT) 30 (29AT) 30 (40AT) 30 (65AT) 30 (88AT) Resonant Frequency (typ.) Hz 5500 5500 5500 5500 5500 Electrical Characteristics Switched Power (max) W 10 10 10 10 10 Switched Voltage DC (max) V 200 200 200 200 200 Switched Voltage AC, RMS value (max) V 140 140 140 140 140 Switched Current DC (max) mA 250 500 500 500 500 Switched Current AC, RMS value (max) mA 250 500 500 500 500 Carry Current DC (max) A 1 1.5 2.5 2.5 2.75 Breakdown Voltage (min) V 200 275 325 400 500 Contact Resistance (initial max) (energization) m 100 (20 AT) 100 (25 AT) 100 (30AT) 100 (40 AT) 100 (40 AT) Contact Resistance (initial typ.) m (energization) 70 (20 AT) 70 (25 AT) 70 (30 AT) 70 (40 AT) 70 (40 AT) Contact Capacitance (max) without test coil pF 0.3 0.3 0.25 0.25 0.25 6 6 6 6 6 RH 45% M 10 10 10 10 10 Insulation Resistance (min) Vibration The switches are tested in accordance with IEC 68-2- accordance with IEC 68-2-20, test Ta, method 3: 6, test Fc (acceleration 10G below cross-over fre- solder globule temperature 235C ageing 1b: 4 hours quency 57 to 62 Hz amplitude 0.75 mm steam. frequency range 10 to 2000 Hz, duration 90 minutes). Such a vibration will not cause an open switch (no Welding magnetic field present) to close, nor a switch kept The leads can be welded. closed by an 80 AT coil to open. Mounting Mechanical Strength The leads should not be bent closer than 1 mm to the The robustness of the terminations is tested in accor- glass-to-metal seals. Stress on the seals should be dance with IEC 68-2-21, test Ua (load 40 N). avoided. Care must be taken to prevent stray magnetic 1 fields from influencing the operating and measuring Operating and Storage Temperature conditions. 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 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 For Most Recent Data, Consult the Coto Technology Website: www.cotorelay.com E-mail: info cotorelay.com 99