... from 0.25W~40W, SIP, DIP, SMD version package optional, isolation voltage from 1KV DC,1.5KV DC, 3KV DC, 6KV ... small package, high power density, isolation voltage from 1KV DC,1.5KV DC, 3KV DC to 6KV DC, with our own patents ... electronic, rail transit, communication, telecom, etcFor more information please email to me SMD DC-DC Converter for electronic product