Comus Reed Relays : Line Card

   Introduction 
   
    Reed relays consist of a reed switch and coil fitted into a house, which could be plastic, metal or moulded. Compared with 
          elecro-mechanical relays, reed relays generally have a faster response time, lower coil consumption and are smaller in size.
          Furthermore, the switch is sealed in a dry, inert atmosphere preventing the ingress of contaminants.

    Operation  
    High voltage Relays have outstanding performance in insulation and stand-off voltage. Energizing the coil operates a reed
          switch causing the contacts to open or close. It is important that the switch is not overloaded by applying loads in excess
          of he switch ratings. For details on switch loads refer to the reed relay specifications and the reed switch application page 
          in this catalogue.

    Vibration and Shock Resistance
         During the evaluation of vibration and shock resistance, the relays are driven with nominal voltage. Te switches should not 
         open longer than 10 µsec.
           
                 

      
     Washability 
      Resistance a Caltron, Frean, alcohol and distilled (pure) water. During the final rinsing phase only the purest substances 
      should be used.

      Pull-in and Drop-out Voltage, Coil Resistance
       The tolerances indicated are valid at 25°C +/- 3°C. The temperature coefficient of the coil resistance is 0.4 % / °C.

       Switching Voltage, Current and Capacity.
       The parameters as listed for switching voltage, current and capacity are maximum values. Exceeding any one of these 
       values causes overload and reduces relay life expectancy.

      Contact Resistance
      The contact resistance indicated is valid for new relays at nominal coil voltage. The four-point method at 2VDC / 100mA or
      10 mA is applied. Custom solutions for special applications, especially for switching signals smaller then 1 mV at 10µA (low
      level -application) or applications requiring dynamic contact resistance measurement can be produced for special switching 
      needs.

      General Parameters
       Life Expectancy 
       The life expectancy of a Reed Relay is at lease  10 5th ... 10 6th operations at nominal load. At minimum load the life expectancy
       can be up to 5 x 10 8th operations. The mechanical life expectancy is 10 9th operations (min). Through the switchin of higher
       loads, especially inductive or capacitive and lamp loads, life expectancy can be considerably rediuced due to exceeding the
       permissible maximum current.

     Thermal Resistance  of the DIL-SIl Reed Relays : 40 K/W.

       Thermoelectric voltage : between FeNi (reed Switch) abd Cu(PCB) a thermoelectric voltage U th  = k x (T1 - T2) occurs with 
        the constant k = 50 £V / °C(T=temperature).

      Capacitance : The capacitance parameters are regarded as typical and are calculated for versions without shielding.

      Solderability : All relays meet the DIN8505 requirements. Hole diameter in PCB : 0.65 mm

      Temperatur range : The operating temperature of the relay is the equivalent of the internatl temperature. If the relays are 
       used in ambient termperatures higher than 20 °C the max permissible operating voltage must be calculated accoring to the 
       table indicated below, useing the formula : UT = Umax x k 1

     Switching Time : When using dry Reed Switches in realys, contact bounce may occur.  Pull in time type. 0.5...1.8 ms at 
     nominal voltage and 20 HZ.  Drop out time (with diode) typ. 0.5...1.5 ms at nominal voltage and 20 Hz.

     Magnetic Shieldings :  Magnetic shielding for Reed Relays are also availabel :
                                               - magnetic shielding for SIL Reed Relays
                                               - top side and side by side
                                               - top side and fornt end
                                               - top side , side by side and front end
                                               - magnetic shieldings for DIL-Reed relays
                                               - top side, side by side and front end suitable for the DIL-high profile

    Comment :  Relays versions with 15 V nominal coil voltage are available for orders exceeding min quantity of 1000 pieces.  
  

                                    Linecards :
                                           Dry Reed Relays
                                           Mercury Wetted Reed Relays
                                           High Voltage Reed Relays
                                           High Power Switch Modules