53217

    The 53217 is a military SPST high power, solid-state relay.  It is a light-weight device resistant to damage from shock and vibration, and immune to contact-related problems (contamination, arcing) associated with mechanical equiva-lents.
 
    Transformer coupling of 53217 between the input and output stages provides effective isolation up to 1000 V RMS.  The Power FET output eliminates bipolar offset and minimizes output voltage drop.
 
    The control input of 53217 may be driven by either CMOS or TTL logic, and the bias supply will accommodate 3.8 through 32 VDC. (See figures 1 & 2)
 
    Integral short-circuit protection of 53217 with status output is provided.  These units sense excessive current flow while under load or while switching, and respond by opening the output.  An open-collector status output is available to indicate that the short circuit protection has been activated.  The output of 53217 will remain blocked indefinitely until the short is rem-oved and the unit reset. This feature prevents damage to the controller and also averts further system failures that may be caused by the short circuit. Status line output of 53217 remains on until the relay is turned off for resetting.  Resetting the unit can be accom-plished by recycling the input control.
 
    This 53217 is available in a variety of quality levels from COTS to class K including any custom screening requiremen-ts. The basic data sheet part is environmentally screened to H level in accordance with Table C-IX of MIL PRF-38534, which includes no element evaluation or QCI.