What is Jumper Wire

By Bester PCBA

Last Updated: 2024-01-02

Table of Contents

What is Jumper Wire

A jumper wire is an electric wire used to connect remote electric circuits on printed circuit boards. It enables short-circuiting and short-cutting of the circuit, allowing for control of electricity and operation of circuits that may not function with ordinary wiring. Jumper wires are commonly employed when there is a need for specification or design changes on the PCB. They can be utilized to reinforce a defective part, partially disable an unnecessary function, or modify the circuit configuration of an unnecessary output component by attaching or detaching the jumper wire.

Furthermore, various types of jumper wires are available, each catering to specific PCB design requirements. These include the U3, U5, L3, L5, and I types. The U3 and U5 types are bent into a “U” shape, similar to the general definition of a jumper wire. However, the L3 and L5 types also adopt a “U” shape but with asymmetrical heights. One side has a fixed height of either 3 mm or 5 mm, while the other side’s height can be selected within a range of 0 mm to 12 mm. On the other hand, the I type of jumper wire is a straight cut wire, with its length specified according to requirements. It is important to choose the appropriate type of jumper wire when making permanent modifications to a circuit, considering factors such as gauge and insulation type.

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