Privacy policy and cookies - INCBTech uses cookies and similar technologies to help deliver the best experience on our site. Our cookies are necessary for the operation of the website, monitoring site performance and to deliver relevant content. You can visit our Privacy Centre to learn more about your online settings.


1N4002 or 1N4004 Diodes (Q021E)



“I have seen designs of 6 and 12 V power sources where 1N4004 diodes are indicated. Would not it be better to use the 1N4002 which is for lower voltage?”


In fact, in a 6 or 12 V source, both use 1N4002 and 1N4004. The two will work in the same way as they are for currents up to 1 A. The 1N4004 that supports a voltage of 200 V is oversized and there is even the possibility of using the 1N4007 to 400 V. The price difference between the types is minimal , hence a small project is not important what does not occur in an industrialized type. Using a diode with higher voltage is just giving a safety margin to operation, but in a 6 V or 12 V supply we will never have the 200 V that the diode supports. If you have 1N4002 available, do not waste your 1N4004 or 1N4007. Store them for assembly that requires a larger voltage diode.