• Top 5 Popular PCBA (PCB) Testing Methods

    15-11-2021

    Top 5 Popular PCBA (PCB) Testing Methods

    PCBA (Printed Circuit Board Assembly) involves a large number of circuits and components, that’s why the test on it looks so crucial, which obviously determines the delivery pass rate and quality. Now...
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  • What's the Standard BOM of Printed Circuit Board (PCBA)?

    06-04-2021

    What's the Standard BOM of Printed Circuit Board (PCBA)?

    What's the standard BOM of Printed Circuit Board (PCBA)?Many electrical engineer ignores to build a standard BOM (Bill of Materials), which will make PCBA manufacturer confused during translating...
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  • Top 4 Useful Certificates for PCB Assembly Factory

    24-11-2020

    Top 4 Useful Certificates for PCB Assembly Factory

    Many PCB assembly factories are highly focusing quality management to win the market and will apply a range of certificates. Regardless of the expense, they are more likely to build robust trust with ...
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  • Why the trend of FCT replacing ICT during PCBA test?

    08-07-2020

    Why the trend of FCT replacing ICT during PCBA test?

    PCBA board needs to be electrical and functional tested before delivery to customer. The normal methods include FCT (function test) and ICT (in circuit test). Few decades ago, ICT was popular in elect...
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  • What's the principle of PCBA test?

    14-02-2020

    What's the principle of PCBA test?

    PCBA test is a crucial procedure to ensure the quality of production and delivery, which stands for a process of making function test jig according to the designed test points, programming and operati...
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  • Unreasonable influence on component layout

    11-12-2019

    Unreasonable influence on component layout

    The correct placement of components on the PCB is an important part of reducing soldering defects....
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  • Meet the requirements of component placement for automated production

    11-12-2019

    Meet the requirements of component placement for automated production

    The thing that components close to the edge of PCB board is not conducive to automated assembly, mechanical stress concentration, easy damage during the turnaround, metallized holes and pads are easil...
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  • What are the defects caused by the common pad problem?

    26-11-2019

    What are the defects caused by the common pad problem?

    What are the defects caused by the common pad problem...
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  • What are the poor PCBA solder mask film design?

    26-11-2019

    What are the poor PCBA solder mask film design?

    What are the poor PCBA solder mask film design?...
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  • Unreasonable PCBA thermal pad design

    20-11-2019

    Unreasonable PCBA thermal pad design

    Unreasonable PCBA thermal pad design...
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  • Common other pad design defects in PCBA

    20-11-2019

    Common other pad design defects in PCBA

    Common other pad design defects in PCBA...
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  • What happens when components are too close to the fasteners?

    18-11-2019

    What happens when components are too close to the fasteners?

    What happens when components are too close to the fasteners?...
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  • Layout design flaws in reflow soldering applications

    18-11-2019

    Layout design flaws in reflow soldering applications

    Layout design flaws in reflow soldering applications...
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  • Common plug-in component layout design flaws

    15-11-2019

    Common plug-in component layout design flaws

    Common plug-in component layout design flaws...
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  • Common chip component layout design flaws

    15-11-2019

    Common chip component layout design flaws

    Common chip component layout design flaws...
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  • What is the impact of incorrect PCBA array design?

    14-11-2019

    What is the impact of incorrect PCBA array design?

    What is the impact of incorrect PCBA array design...
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  • The impact of PCB layout confusion on soldering reliability

    14-11-2019

    The impact of PCB layout confusion on soldering reliability

    Confusing PCB layout is seriously affects soldering reliability....
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  • Field programmable gate arrays

    12-10-2019

    Field programmable gate arrays

    The advancement in on-chip field programmable techniques combined with ever increasing packing densities has led to the introduction of field programmable gate arrays or FPGAs....
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  • Combinationall Logic Design Example : a four-bit adder

    12-10-2019

    Combinationall Logic Design Example : a four-bit adder

    In this section we consider the design of a four-bit adder; i.e. a circuit that adds together two four-bit binary numbers....
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  • Standard cell

    26-09-2019

    Standard cell

    The advantages of fast turnaround time and relatively low cost offered by gate arrays is counterbalanced by several problems....
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  • CAD tools for field programmable logic

    26-09-2019

    CAD tools for field programmable logic

    The programming of field programmable logic devices is implemented directly via a computer. The software needed for PALs and PLAs is usually a simple matter of producing a programming file called a fu...
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  • Full custom

    25-09-2019

    Full custom

    This is the traditional method of designing integrated circuits. With a standard cell and gate array the lowest level that the design is performed at is the logic gate level, i.e. NAND, NOR, D-Type, e...
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  • Field programmable loglc

    25-09-2019

    Field programmable loglc

    ​So far we have seen two extremes in the design options available to a digital designer-namely standard products and mask programmable ASICs....
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  • Introduction to asunchronous sequential circuit design

    20-09-2019

    Introduction to asunchronous sequential circuit design

    Introduction to asunchronous sequential circuit design...
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  • Asynchronous and synchronous counters

    20-09-2019

    Asynchronous and synchronous counters

    To divide the counters we will look at into two types: asynchronous and synchro- nous. When used with respect to counters' these adjectives describe whether the Alip-flops holding the states of the ci...
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  • Introduction to asynchronous sequential circuits

    19-09-2019

    Introduction to asynchronous sequential circuits

    ​The ‘memory’ of previous outputs in an asynchronous sequential circuit is provided by direct feedback from the internal output(s), Y, to the internal input(s), y, of the combinational logic block. Th...
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  • Asynchronous circuit Inputs and race conditions

    19-09-2019

    Asynchronous circuit Inputs and race conditions

    For an asynchronous circuit to be of use it must have more than one external input (otherwise all the circuit has to respond to is a signal alternately changing its value from 0 to 1 to and so on). If...
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  • Two-level circuits

    18-09-2019

    Two-level circuits

    Two-level circuits are direct implementations of sum of products and product of sums forms, either in fundamental form(straight from the truth table) or after minimisation. We now consider the advanta...
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  • Positive and negative assertion level logic

    18-09-2019

    Positive and negative assertion level logic

    The idea of positive and negative assertion level logic arises directly out of duality. It is again based upon the fact that because Boolean algebra describes a two-state system then specifying the in...
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  • Five major factors in achieving high reliability quality goals

    10-09-2019

    Five major factors in achieving high reliability quality goals

    Five major factors in achieving high reliability quality goals...
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  • The core concept of printed circuit board assembly DFM

    10-09-2019

    The core concept of printed circuit board assembly DFM

    The core concept of printed circuit board assembly DFM...
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  • A text to understand the circuit design pattern process review requirements

    09-09-2019

    A text to understand the circuit design pattern process review requirements

    A text to understand the circuit design pattern process review requirements...
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  • 8 basic principles of PCBA manufacturability design

    09-09-2019

    8 basic principles of PCBA manufacturability design

    8 basic principles of PCBA manufacturability design...
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  • What are the specific PCB/PCBA process reviews?

    05-09-2019

    What are the specific PCB/PCBA process reviews?

    What are the specific PCB/PCBA process reviews?...
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  • Gerber file process review method and problem handling

    05-09-2019

    Gerber file process review method and problem handling

    Gerber file process review method and problem handling...
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  • Top factors to define the solder paste printing quality

    30-08-2019

    Top factors to define the solder paste printing quality

    Top factors to define the solder paste printing quality...
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  • 3 minutes quick start of solder paste inspection system SPI

    30-08-2019

    3 minutes quick start of solder paste inspection system SPI

    3 minutes quick start of solder paste inspection system SPI...
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  • How to manage components with high moisture sensitivity level

    29-08-2019

    How to manage components with high moisture sensitivity level

    With the increasing use of high-precision components on the market,it is requested the factory should pay more attention on it before manufacturing, like shipment with moisture proof packaging, storag...
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  • How to control ESD protections in a PCBA factory?

    29-08-2019

    How to control ESD protections in a PCBA factory?

    In the modern electronic industry, it is impossible to generate static electricity under normal conditions, but the generation of static electricity is not a hazard. The real danger lies in the accumu...
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  • The cost and how to build a PCBA Tester

    20-08-2019

    The cost and how to build a PCBA Tester

    PCBA Tester is used to check the quality of PCBA manufacturing, including: soldering connected, electric test, PCBA’s voltage, PCBA’s function, the quality of components and etc; How to build a PCBA t...
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  • How to clean flux residues on PCB board?

    09-08-2019

    How to clean flux residues on PCB board?

    Solder paste and rosin do not cause defects on PCB board, but some solder paste and rosin contain more water, and moisture will remain on the surface of the board after use, which may cause short circ...
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  • How to do DFM check of PCB fabrication and assembly?

    01-07-2019

    How to do DFM check of PCB fabrication and assembly?

    Many PCB desingers have no profound understanding of PCB fabrication and assembly processes, so their designs will probably have some unclear or even defectives. When a PCB manfacutring and assembly s...
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  • What are PCBA and FPCA?

    08-01-2019

    What are PCBA and FPCA?

    PCBA is the abbreviation of Printed Circuit Board + Assembly, that is to say, PCB empty board passes through SMT upper parts, and then through the whole process of DIP plug-in....
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  • What are the hazards of ESD for SMT patch processing?

    08-01-2019

    What are the hazards of ESD for SMT patch processing?

    When choosing the right PCBA processing manufacturer, we must understand a basic concept of cooperation. Any long-term and enjoyable business cooperation is based on peer-to-peer, that is, the door-to...
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  • How to choose the right PCBA processing factory?

    13-12-2018

    How to choose the right PCBA processing factory?

    When choosing the right PCBA processing manufacturer, we must understand a basic concept of cooperation. Any long-term and enjoyable business cooperation is based on peer-to-peer, that is, the door-to...
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  • How to improve the soldering problem of PCBA plug-in after wave soldering?

    13-12-2018

    How to improve the soldering problem of PCBA plug-in after wave soldering?

    How to improve the soldering problem of PCBA plug-in after wave soldering?...
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  • What is the cause of corrosion on the PCBA surface?

    13-12-2018

    What is the cause of corrosion on the PCBA surface?

    After the PCBA is soldered, the PCBA board will have tin, flux, dust and employee fingerprints, which will cause the surface of the PCBA board to be dirty, and the organic acids and ions in the flux r...
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  • What is the use of PCBA for processing PCB patches? How do I use them?

    13-12-2018

    What is the use of PCBA for processing PCB patches? How do I use them?

    The stencil of PCBA processing patch is used to print red glue or solder paste on the PCB....
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  • What are the hazards of welding contamination after PCBA processing?

    13-12-2018

    What are the hazards of welding contamination after PCBA processing?

    What are the hazards of welding contamination after PCBA processing?...
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  • What are the main pollutants of PCBA after processing?

    13-12-2018

    What are the main pollutants of PCBA after processing?

    What are the main pollutants of PCBA after processing...
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