Printed Circuit Boards Glossary:Design,Fabrication and Assembly-J

Just-in-time(JIT)

Minimization of inventory by supplying material and components to the production line directly before placement into the product.

Jumper

An electrical connection between two points on a printed board added after the intended conductive pattern is formed.

J-leads

The preferred surface mount lead form used on PLCCs, so named because the lead departs the package body near its Z-axis centre-line, is formed down the rolled under the package. Leads so formed are shaped like the letter “J”.