Circuit boards must use the thinnest coating material to provide maximum protection in order to minimize heat retention, additional weight gain and various other problems.
The latest quotation of PCBA is determined by the following three parts: 1. PCB plate: 2. SMT Patch Processing Plate: 3.
SMT patch proofing and mounting on the space the size of the pinky finger means higher reliability and mounting accuracy, and two great progress can be summarized: first, the number of chip welding pins is reduced, and second, the welding volume is smalle
SMT patch processing basic introduction: high assembly density, small size of electronic products, light weight, high reliability, strong vibration resistance. Low defect rate of solder joint, good high-frequency characteristics, reduce electromagnetic an
The wide application of double-sided circuit board has promoted the manufacture of printed circuit board to light, thin, short and small development.
In the main PCB circuit boards and components are not possible to increase the price, so the cost is reflected in the link of assembly. : 1, auxiliary materials: tin paste, tin strip, flux, UV glue, through the furnace fixture, 2, smt patch processing, 3,
The following seven factors that will affect welding are summarized: first, welding heating bridge, second, pin welding force, third, choice of soldering iron head, fourth, temperature setting, fifth, use of flux, sixth, transfer welding operation, sevent
Tin beads have serious harm to electronic products, so how to reduce tin beads is one of the key management and control contents of SMT enterprises.
Resistance is the most numerous component in electrical equipment, but it is not the component with the highest damage rate. Resistance damage is most common in open circuit, and resistance increases are rare and resistance decreases are rare.
With the development of miniaturization of electronic products and high-density assembly of circuit board components, SMT production and testing have brought great challenges.
Through hole is one of the important components of multi-layer PCB. From the perspective of function, through hole can be divided into two categories: one is the electrical connection between each layer; The second is the device fixing or positioning.
On the automatic surface mounting line, if the PCB is not smooth, it will cause inaccurate positioning, components cannot be inserted or affixed to the holes of the board and the surface mounting pad, and even crash the automatic inserting machine.
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