RI-08A

RI-08 Series Dry Reed Switch RI-08 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 sensors, relays, pulse counters or similar devices. RI-08 Series Features
Can switch main voltage
Can handle up to 40W load
Contact layers: Ruthenium on gold
Superior glass-to-metal seal and blade alignment Dimensions in inches (mm) General data for all models RI-08 AT-Customization / Preformed Leads 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 Loaded conditions (resistive load: 20 V; 500 mA; operating frequency: 125 Hz) RI-08AA Life expectancy: min. 106 operations. Coils 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-08 series. 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. Mechanical Data No-load conditions (operating frequency: 100 Hz) Contact arrangement is normally open; lead finish is tinned; net mass is approximately 280 mg; and can be mounted in any position. Life expectancy: min. 108 operations with a failure rate of less than 10-9 with a confidence level of 90%. Shock 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) 124 The switches are tested in accordance with “IEC 68-2-27”, 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, 942-0920 6 (Europe) Tel: +31-45-5439343 / Fax +31-45-5427216 RI-08 Series Dry Reed Switch Model Number Parameters RI-08AA RI-08A RI-08B AT AT ms ms µs Hz 10.5-19 4-12 0.35 (24AT) 0.15 (24AT) 30 (24AT) 3200 15-28 5-16 0.35 (35AT) 0.15 (35AT) 30 (35AT) 3200 24-51 8-20.5 0.35 (64AT) 0.15 (64AT) 30 (64AT) 3200 (energization) (energization) without test coil W V V mA mA A V mΩ mΩ pF 30 200 200 750 750 1.75 300 120 (27 AT) 90 (27 AT) 0.20 30 200 200 1000 1000 2.25 400 120 (27AT) 90 (27 AT) 0.20 40 200 250 1000 1000 3.0 580 120 (36 AT) 90 (36 AT) 0.20 RH ≤ 45% MΩ 106 106 x106 Test Conditions Units Operating Characteristics Operate Range Release Range Operate Time - including bounce (typ.) Bounce Time (typ.) Release Time (max) Resonant Frequency (typ.) (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) nor a switch kept closed by an 80 AT coil to open. Vibration The switches are tested in accordance with “IEC 68-2-6”, 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). 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. 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. Mechanical Strength 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. Operating and Storage Temperature 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. For Most Recent Data, Consult the Coto Technology Website: www.cotorelay.com 6 E-mail: info@cotorelay.com 125