20cm Male-to-Female Jumper Wires, 40-Piece Set

20cm male-to-female jumper leads

This set is listed as 40 male-to-female jumper wires, each 20cm long. Each lead has a male pin at one end and a female socket at the other, allowing a compatible pin header to connect to a suitable female header or breadboard contact.

General-purpose bench wiring

The 20cm length offers working room between nearby modules and controller headers without choosing the longest lead. Plan the route before connecting power to avoid crossing or pulling adjacent connections.

The leads can be used for suitable low-power circuits involving microcontrollers, sensors and modules. Mechanical fit does not establish electrical compatibility: check the signal voltage, polarity and pin functions for both connected devices.

Listed connection details

• Length: 20cm.
• Quantity: 40 individual leads.
• Ends: male to female, pin to socket.
• Header spacing: compatible with suitable 2.54mm headers.
• Current rating, conductor gauge and contact plating: not verified here.

This page targets the 20cm set. If the catalogue or order details display multiple lengths, confirm that the supplied set is 20cm before purchase. Compatibility with Arduino-style projects does not mean these wires are manufactured or certified by Arduino.

Wire a prototype carefully

Disconnect power while changing connections, check the header pinout and avoid exposed pins touching adjacent conductors. These leads do not provide voltage regulation or logic-level conversion.

No mains-voltage or high-current rating is established. Do not use them for motor supply paths, battery power connections or another load requiring rated power wiring. For another project layout, compare 10cm male-to-female jumper wires or 30cm male-to-female jumper wires.

Frequently asked questions

Are both ends female?

No. Each lead has one male end and one female end.

Will the wires work with every development board?

No universal fit is guaranteed. Check header spacing, contact style and electrical requirements.