Notice When the laser holes and the inner buried holes are inserted together, that is, the holes of the two drilling belts are in the same position, you need to move the laser holes to ensure electrical connection.
The circuit board makes the circuit miniaturized and intuitive, which plays an important role in the mass production of fixed circuit and the optimization of electrical appliance layout.
Spray tin is divided into lead spray tin (i.e. hot air flat) and lead-free spray tin. Below you can see the difference between the various processes;
This technology has become a necessary means of detection in fine wire production, and is being rapidly popularized, applied and developed.
Although both microstrip line and GCPW can be modeled and simulated to predict circuit performance, GCPW is more difficult to process and affected by processing at 77GHz frequency.
There are positive and negative sides, the white side is welded LED pin, the other side shows aluminum color, generally coated with thermal coagulation and thermal part contact. Ceramic substrate and so on.
The best stacking mode, because the use of multi-layer ground reference plane has very good geomagnetic absorption capacity.
the thermal performance index analysis software module added in some professional PCB design software can help designers optimize circuit design.
there are still some differences between high frequency products and high speed products in the demand for plate.
In the design of the power resistance as far as possible to select some large components, and adjust the layout of the printed circuit board so that it has enough space for heat dissipation.
Peel off the bad part of the copper wire to see the copper foil surface, you can see the normal color of the copper foil surface, there will be no bad side erosion, copper foil peeling strength is normal.
In the process of board making, there are several processes to go through the yellow light room. The visual effect of green in the yellow light room is better, but this is not the main.
Telegram