Chimicron is an independent distributor of electronic components. We have reliable sources of electronic components, only sell new & original products and offer 1 year warranty for our products. Buy the P4SMA440A J.W. Miller / Bourns at chimicron.com. We have 9450 pieces of P4SMA440A in stock available now. Submit an inquiry for P4SMA440A or send an email to [email protected], we will contact you in 24 hours.