The main electrical properties of wire to board connector include contact resistance, insulation resistance and electrical strength.

1. Contact resistance

High quality electrical connectors should have low and stable contact resistance. The contact resistance of the connector ranges from a few milliohm to tens of milliohm.

2. Insulation resistance

The index of insulation performance between electrical connector connectors and between contact and shell is in the range of hundreds of megohm to several Giga ohm.

3. Electrical strength

Electrical strength, also known as withstand voltage and dielectric withstand voltage, is the ability to withstand rated test voltage between connector contacts or between contacts and enclosure.

4. Other electrical properties

EMI leakage attenuation is to evaluate the EMI shielding effect of connectors, and EMI leakage attenuation is to evaluate the EMI shielding effect of connectors, which is generally tested in the frequency range of 100MHz ~ 10GHz.

For RF coaxial connectors, there are also electrical indicators such as characteristic impedance, insertion loss, reflection coefficient and VSWR. Due to the development of digital technology, in order to connect and transmit high-speed digital pulse signals, a new type of connector, namely high-speed signal connector, has appeared. Correspondingly, in terms of electrical performance, besides characteristic impedance, there are also some new electrical indicators, such as crosstalk, transmission delay and time delay.