UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post - 2N3819 Junction gate field-effect transistor (JFET)

Terry_VK5TM · 12th Jan 2017, 10:55 am

MPF102's, 2N3819's, J310's and many similar can be used with Drain and Source interchanged without ill effect, only the Gate is specific.

It's a function of how they are constructed.

I've just drawn up a project that use the SMD version of the J310 and the datasheet specifically mentions that D & S can be reversed (which made the pcb layout much easier).

Terry

12th Jan 2017, 10:55 am	#19
Terry_VK5TM Nonode Join Date: Oct 2010 Location: Tintinara, South Australia, Australia Posts: 2,339	Re: 2N3819 Mosfet MPF102's, 2N3819's, J310's and many similar can be used with Drain and Source interchanged without ill effect, only the Gate is specific. It's a function of how they are constructed. I've just drawn up a project that use the SMD version of the J310 and the datasheet specifically mentions that D & S can be reversed (which made the pcb layout much easier). Terry Last edited by Terry_VK5TM; 12th Jan 2017 at 10:57 am. Reason: more words