86 coto technology (usa) tel: (401) 943-2686 / fax (401) 942-0920 (europe) tel: +31-45-5439343 / fax +31-45-5427216 RI-80 series ultra-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-80 series features ideal for ate switching, proximity sensors & medical applications world?s smallest high quality reed switch contact layers: gold, sputtered ruthenium superior glass-to-metal seal and blade alignment general data for all models RI-80 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 coils all characteristics are measured using the philips standard coil. for definitions of the philips standard coil, see reed 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-80 series. no-load conditions (operating frequency: 100 hz) life expectancy: min. 10 8 operations with a failure rate of less than 2 x10 -9 with a confidence level of 90%. end of life criteria: contact resistance > 1 ? after 2 ms release time > 2ms (latching or contact sticking). loaded conditions (resistive load: 5v; 100 ma; operating frequency: 170 hz) life expectancy: min. 10 7 operations with a failure rate of less than 10 -8 with a confidence level of 90%. end of life criteria: contact resistance > 2 ? after 4 ms release time > .7 ms (latching or contact sticking) switching different loads involves different life expect- ancy and reliability data. further information available upon request. mechanical data contact arrangement is normally open; lead finish is tinned; net mass is approximately 65mg; and can be mounted in any position. dimensions in inches (mm) RI-80 series dry reed switch
87 for most recent data, consult the coto technology website: www.cotorelay.com e-mail: info@cotorelay.com RI-80 series dry reed switch shock the switches are tested in accordance with ? iec 68-2-27? , 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 switches are tested in accordance with ?iec 68-2-6?, test fc (acceleration 10g; 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. mechanical strength the robustness of the terminations is tested in accor- dance with ?iec 68-2-21?, test ua1 (load 10n). operating and storage temperature 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 10c for 3.5 0.5 s. solderability is tested in accordance with ?iec 68-2- 20? test ta, method 3: solder globule temperature 235c; ageing 1b: 4 hours steam. welding the leads can be welded. 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. * only for switches with at operate value > 10at model number RI-80 parameters test conditions units operating characteristics operate range at 5-15 release range at 2-13 operate time - including bounce (typ.) ms 0.35 (20 at) bounce time (typ.) ms 0.1 (20 at) release time (max) s 20 (20 at) resonant frequency (typ.) hz 21.300 electrical characteristics switched power (max) w 5 switched voltage dc (max) v 200* switched voltage ac, rms value (max) v 140 switched current dc (max) ma 350 switched current ac, rms value (max) ma 250 carry current dc; ac, rms value (max) a 0.5 breakdown voltage (min) v 230 contact resistance (initial max) (energization) m ? 160 (20 at) contact resistance (initial typ.) (energization) m ? 140 (20 at) contact capacitance (max) without test coil pf 0.45 insulation resistance (min) rh 45% m ? 10 6
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