RI-90 Series Dry Reed Switch RI-90 Series Micro changeover dry-reed switch hermetically sealed in a gas-filled envelope. Single-pole, double-throw (SPDT) type, having a normally open and a normally closed contact. The switch 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-90 Series Features Ideal for ATE switching & proximity sensors Contact layers: Ruthenium on gold Superior glass-to-metal seal and blade alignment Excellent life expectancy and reliability Dimensions in inches (mm) General data for all models RI-90 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 End of life criteria: Contact resistance > 1Ω after 2 ms Release time > 2 ms (latching or contact sticking). Switching different loads involves different life expectancy and reliability data. Further information is available on request. Coils Operating and Storage Temperature AT-Customization / Preformed Leads All characteristics are measured using the Philips Standard Coil. For definitions of the Philips Standard Coil, see 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 1.25 times the published maximum operate value for each type in the RI-90 series. No load conditions (operating frequency: 100Hz) Life expectancy : min. 108 operations with a failure rate of less than 2 x 10-9 with a confidence level of 90%. 84 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 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. COTO TECHNOLOGY (USA) Tel: (401) 943-2686 / Fax (401) 942-0920 6 (Europe) Tel: +31-45-5439343 / Fax +31-45-5427216 RI-90 Series Dry Reed Switch Model Number Parameters RI-90 Test Conditions Units Operating Characteristics Operate Range Release Range Operate Time - (max) Bounce Time (max) Release Time (max) Resonant Frequency (typ.) AT AT ms ms ms Hz 10-30 Min 5 1.0 1.5 1.0 TBD without test coil W V V mA mA A V mΩ mΩ pF 5 175 125 400 280 0.5 200 140 120 0.8 RH ≤ 45% MΩ 10 (energization) (energization) (energization) Electrical Characteristics Switched Power (max) Switched Voltage DC (max) Switched Voltage AC, RMS value (max) Switched Current DC (max) Switched Current AC, RMS value (max) Carry Current DC (max) Breakdown Voltage (min) Contact Resistance (initial max) Contact Resistance (initial typ.) Contact Capacitance (max) Insulation Resistance (min) 3 Mounting 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. For Most Recent Data, Consult the Coto Technology Website: www.cotorelay.com 6 E-mail: [email protected] 85