The QCM chassis mount series dc/dc converters deliver up to 75W of output power in encapsulated, 2.65" x 4.2" x 1" packages. Recessed barrier strips allow all connections to be made in tight quarters while protecting the barrier strip from physical damage. Units can be mounted in a variety of orientations. Input ranges from 18 to 36 Vdc and 36 to 75 Vdc and output voltage options include 3.3, 5, 12, 15 and 24 Vdc. All models are isolated input to output and switching frequency is 360 kHz. CALEX MFG. CO. INC., Concord, CA. (800) 542-3355.