Where does the name TO-220 come from, and what significance does it have, if any? I am aware it is a JEDEC standard but wonder what is the origin of the package name?
Where does the name TO-220 come from
components
components
Where does the name TO-220 come from, and what significance does it have, if any? I am aware it is a JEDEC standard but wonder what is the origin of the package name?
Best Answer
(Wow - this is a tough crowd this morning!)
Wikipedia says, of the TO-92 case, "The JEDEC TO-92 descriptor is derived from the original full name for the package: Transistor Outline Package, Case Style 92.", which would lend credence to @PeterJ's speculation that the numeric part is a serial number assigned to the design.