Probe connectors: What are the types of probes?

The probe is a test needle for testing PCBA, with a gold-plated surface and a high-performance spring with an average life of 30,000 to 100,000 cycles. So, probe connectors: What are the types of probes?

Probe connectors: What are the types of probes?

1, ICT probe (ICT series probe)

The general diameter is between 2.54mm-1.27mm, according to industry standards called 100mil, 75mil, 50mil, more specifically, the diameter is only 0.19mm, mainly used for online circuit testing and functional testing, also known as ICT testing and FCT testing. It is also a widely used probe.

2, interface probe (interface probe)

Non-standard probes are typically customized for a small number of customers who build large test machines, such as Teradyne and Agilent. They are used to test the contact points and surfaces between the machine and the test fixture.

3, micro series probe

The center distance between the two test points is generally 0.25 mm to 0.76 mm.

4, switch probe (switch probe)

Switch probe A single probe has two currents.

5, high-frequency probe (coaxial probe)

For testing 50010g Hz high frequency signals, both with and without shielding rings.

6, rotating probe (rotating probe)

Generally, the elasticity is not high because of its strong permeability, and it is generally used in PCBA tests for OSP treatment.

7, high current probe

The diameter of the probe ranges from 2.54 mm to 4.75 mm, and the test current can reach 39 amps.

8, semiconductor probe (semiconductor probe)

Generally, the diameter is between 0.50mm-1.27mm, the bandwidth is greater than 10GHz, and the 50 characteristics.

9. Battery and connector contacts

Generally used to optimize the contact effect, good stability, long life.

10. Automotive wire harness test probe

Used for on-off detection of automotive wire harnesses, diameter 1.0-3.5mm, current 3-50A.

In addition to the above types, there are temperature probes, Kelvin probes and so on. Rarely used.

Probe connector: What are the probe materials?

1, the main material is W, ReW, general elasticity, easy to offset, sticky gold chips, need to be cleaned several times, wear and tear needle length, general life.

2, A+ material clean needle, this material elasticity is good, the test is not easy to offset, and non-stick gold chips, no cleaning, so long life.

Optical circuit board test probe: circuit board test before installation of components and only open circuit, short circuit detection probe, most of the domestic probe products can replace imported products; Online test probe: Detection probe after the PCB board is installed; The core technology of the product is still in the hands of foreign companies, and some domestic probe products have been successfully developed and can replace imported probe products.