... frequency at 83KHzLow costHigh reliability♦100W DC-DC Power Supply SPECIFICATION: Model No. Input Output R&N Effi. SD-100A ... -59.2V~18V5V, 0~20A100mV74%SD-100A-129.2V~18V12V, 0~8 ... ~72V5V, 0~20A100mV76%SD-100C-1236V~72V12V, 0~8.5A120mV80%SD-100C-2436V~72V24V, 0~4.2A150mV83% ... refer to EN61000-4-2,3,4,6,8;ENV50204,EN55024,light industry level,criteria AOTHERS MTBF356 ...