sales@ipcb.com
PCB circuit boards sent to the SMT patch factory for the patch foundry, testing is very important, which will directly affect the quality of the PCBA board, then in the PCBA foundry, will be commonly used in which PCBA testing equipment?
SPI Testing Equipment
SPI Inspection Equipment: Solder Paste Testing
SPI can detect the printing quality of solder paste, and can detect the height, area, volume, offset and short circuit of solder paste.
The role of online SPI: real-time detection of the volume and shape of the solder paste. Reduce the defects of SMT production line,the detection results are echoed back to the solder paste printing process,and the status and parameters of the printing machine are adjusted in a timely manner.
AOI Inspection Equipment
AOI Inspection Equipment: Automatic Optical Inspection
The so-called optical inspection that is to use the optical lens to detect the component to take pictures, and then analyse the photos for inspection.AOI automatic optical inspection device, AOI can be placed with many positions in the SMT factory,but in the actual foundry generally placed in the back of the reflow soldering,used for reflow soldering PCBA soldering quality inspection,so as to timely detection and elimination of less tin, less material, virtual solder, tin and other defects.
General AOI inspection equipment consists of two parts,one is the inspection equipment and the other is the rework equipment,the inspection equipment can detect the presence and absence of components, component polarity and text elements,to ensure the accuracy of the patch installation.
After pre-furnace mounting: Missing/existing components Offset (X, Y, θ value),rotation,flip-flop,side stand,polarity, etc.
X-RAY Inspection Equipment
X-RAY Inspection Equipment
X-RAY is in fact the commonly used X-ray,using high voltage to hit the target material to produce X-ray penetration to detect electronic components, transistor packaging products internal structure quality, as well as the quality of various types of SMT solder joints.
ICT Testing Equipment
ICT Testing Equipment: Automatic In-Circuit Tester
ICT is an automatic in-line tester with a wide range of applications and simple operation. ICT is an automatic in-line tester for production process control, which can measure resistance, capacitance, inductance and integrated circuits. It is particularly effective in detecting open circuits, short circuits, component damage, etc.,with accurate fault location and easy maintenance.
ICT automatic on-line tester is a modern electronic enterprises must have PCBA production test equipment, ICT use a wide range of measurement accuracy,the detection of the problem of clear instructions,even if the general level of electronic skills of workers to deal with the problem of the PCBA is also very easy. The use of ICT can greatly improve production efficiency and reduce production costs.
ICT Test is mainly * test probe contact PCB layout out of the test point to detect the PCBA line open, short circuit, all parts of the welding situation,can be divided into open circuit test, short circuit test, resistance test, capacitance test, diode test, three-pole tube test, field effect tube test, IC pin test, and other general and special components of the leakage of the installation,the wrong installation,the parameter value deviation,Weld joint welding, circuit board open and short circuit and other faults, and will be the fault of which component or open and short circuit is located in which point to accurately tell the user.
FCT Test Equipment
FCT Test Equipment:Function Test
FCT test refers to the test method of providing an analogous operating environment (excitation and loading) to the test target board to make it work in various design states, so as to obtain the parameters of each state to verify the functionality of the UUT.
Simply put,it is to load the UUT with suitable excitation and measure whether the response of the output side meets the requirements.Generally,it refers to the function test of PCBA.
Function test can be divided into manual control function test,semi-automatic control function test and fully automatic control function test according to different control modes.The earliest function test mainly focuses on manual and semi-automatic pipeline.
For some simple function tests of the board under test, based on simplifying the design and reducing production costs,we sometimes still use manual or semi-automatic test solutions.With the development of technology, in order to save production costs, the majority of functional tests are fully automated.Another more common classification is based on the type of controller used for functional testing. In function testing,we usually use MCU control pipeline, embedded CPU control pipeline, PC control pipeline, PLC control pipeline and so on.
Function test can be divided into manual control function test,semi-automatic control function test,and fully automatic control function test according to the different control modes. The earliest function test mainly focuses on manual and semi-automatic pipeline. For some simple function tests of the board under test, based on simplifying the design and reducing production costs,we sometimes still use manual or semi-automatic test solutions. With the development of technology, in order to save production costs, the majority of functional tests are fully automated.Another more common classification is based on the type of controller used for function testing.
The above is a few kinds of SMT SMD foundry process will often be used in several kinds of PCBA testing equipment.