Manufacturers of cryogenic equipment can also provide cryogenic solutions and applications.
As electronic technology continues to advance, there is a growing abundance of precision small devices. As such, probe station play an increasingly vital role in the testing of these devices. By magnifying the device under examination and connecting it to measuring instruments, probe tables allow for research at both microscopic and macroscopic levels. Therefore, selecting an appropriate probe station is crucial.
It is first necessary for our country to select the appropriate size of the sample holder, which will be available in sizes of 2 inches, 4 inches, 6 inches, 8 inches, and 12 inches. If not, we can test larger wafers or devices. It is also important for teachers in China to pay attention to whether the probe can reach any different positions to meet the zaps.
We can carry up to six test probe arms simultaneously, the types of probe arms are DC arm, RF arm, and microwave arm, which are equipped with the corresponding probes.
As with the different tests, we need the appropriate test environment. We can pick whether it has a magnetic field, whether the magnetic field is fixed or variable, and whether it is equipped with permanent magnets and electromagnets.
Fourthly, we test whether there is a temperature requirement, what temperature range we need, including room temperature, 4K room temperature stage (under vacuum), liquid nitrogen temperature -800K (under vacuum), which correspond to manual probes at room temperature, closed-loop probes for 4K, and vacuum probes for liquid nitrogen at high and low temperatures.
Next, it is important to determine the size of the electrode or pad point on our test sample. This will help us choose an appropriate microscope system based on our needs, with a minimum identification range of 3μm, 1μm, and 0.1μm. It's worth noting that as magnification increases,micromanipulator the working distance of the microscope will decrease (the distance between the objective lens and sample surface). Therefore, we must consider this when selecting a suitable system. Generally, it is recommended that the diameter of our probe does not exceed one-fourth of the cushion point for easier needle feeding and testing purposes.
Lastly, if the structure of the space where our probe table is placed does not have a limit, we must consider the overall size of the enterprise probe table.
It is important to consider a variety of factors when buying a probe station. The parameters and prices of each probe manufacturer can be compared, and ultimately you can make the right purchase.
