Jumper wire

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Male to female jumper wire strip
Jumper wires with crocodile clips, aka test leads.
A ribbon cable connects the pin sockets of an Arduino USB 2 Serial micro to a breadboard and wire jumpers make interconnections on the breadboard.

A jumper wire also known as jumper link, jumper, jump wire or DuPont cable is a connecting wire, bare at the ends or terminated with some type of connector. These are used in prototyping, installed as part of the circuit assembly, added after assembly to modify a circuit or added to correct a defect.[1]

Use in prototyping

Jumper wires of insulated 26AWG wire terminated with crimped pins or sockets in plastic housing are used to make connections between pin headers or sockets. With 2.5 mm (0.1 inch) housing they're suitable for interfacing single board computers like the Arduino and Raspberry Pi. These will also fit without damage to interconnect the components on solderless breadboard although here 22 AWG solid-core hookup wire with bare ends can be used instead.[2]

Use in repair/modification

See Repairs and PCB repair

DuPont crimp connectors

A DuPont crimp consists of two parts, 0.1” (2.54mm) housing and separate metal crimp terminal. The AWG for wire generally used is 22, 24, 26 or 28 (standard ribbon cable) and a maximum diameter of 1.57mm.[3][4]

Using the proper crimping tool makes a good crimp joint easy. A properly crimped joint does not need soldering and is more than strong enough.[5] Most crimp terminals are designed to be crimped, not soldered. Soldering a crimped terminal may weaken the mechanical connection, reduce electrical conductivity, and damage the terminal. You should not solder a crimp terminal.[6]

See also


  1. ^ 6.1 Jumper Wires, Circuit Technology Center
  2. ^ Jumper Wires for Breadboard, Arduino, Raspberry Pi, Olimex, etc., Rapid Electronics
  3. ^ Molex data sheet 08-50-0114
  4. ^ Molex data sheet 08-52-0072
  5. ^ Crimping, by Dave Renoir, 20 October 2011
  6. ^ Making the Connection: Solder vs. Solderless Terminals by Jerry Sussman

External links