We can supply 3.9V1/2W , send us a request quote to request 3.9V1/2W pirce and lead time.Wisdom Mobility is a professional electronic components distributor. With 10+ Million line items of available electronic components can ship in short lead-time, over 250 thousand part numbers of electronic components in stock for immediately delivery, which may include part number 3.9V1/2W.The price and lead time for 3.9V1/2W depending on the quantity required, availability and warehouse location.Contact us today and our sales representative will provide you price and delivery on Part 3.9V1/2W.We look forward to working with you to establish long-term relations of cooperation