4-Wire Interface Circuit Boards
These wire-lead circuit boards have gold-plated pads for probing in a single position regardless of part size or lead length. Individual contacts for each position provide redundant contact to each wire for production-line proven reliability. Each contact is manufactured from beryllium copper and is plated with heavy silver over nickel for reliable connection to the part under test.
![](https://santabarbaraautomation.com/wp-content/uploads/2023/09/4wire-interface.jpg)
![](https://santabarbaraautomation.com/wp-content/uploads/2023/09/4wire-interface2.jpg)
The large circuit board traces maintain full 4-wire (Kelvin) connections to the leadwire. Circuit boards and contacts are designed to test 20 parts, but may be modified for your requirements.
Use these interface boards to measure 4-wire resistance, Thermal Transient, impedance and insulation resistance – or any test requiring full Kelvin connections to the part.
A close-fitting cover placed over the contacts protects against damage and debris, and acts as a guide for inserting the wires into the proper positions.
Downloads (PDF)