The circuit board industry contains PCB production, PCBA processing. We will encounter SMT, DIP process. But for many people who are new to circuit boards, it is difficult to distinguish between them. Then, let ETE to explain in detail the relationship between PCB, SMT, DIP and PCBA.
How to differentiate SMT/DIP/PCB/PCBA between them?
PCB also known as printed circuit board. PCB used to support electronic components in electronic products carrier. Almost every kind of electronic equipment, from small to electronic watches. calculators, large to computers, communication electronics, military weapons systems. as long as integrated circuits and other electronic components.
To make the electrical interconnection between the various components to use PCB. Printed circuit board by the insulating base board. connecting wires and assembly welding electronic components of the pads. with conductive lines and insulating base board of the dual role.
PCB
PCB contains fpc board, rigid and flex combination board and rigid PCB. the PCB bare board in electronic products is not play any role. need to processed a variety of electronic components. to play the role of electrical connection. and processing methods Is SMT and DIP.
SMT refers to the SMD assembly technology. the industry is generally known as SMT SMD. It is a PCB circuit board surface assembly. circuit board process. because the electronic components assembled for the pinless chip electronic components. so it is called surface mount technology. and it is the most popular technology and process in the electronic assembly industry.
Surface mount technology
SMT mainly using the mounting machine is to mount some micro small parts to the PCB board. The production process : PCB board positioning, printing solder paste. mounting machine mount, over soldering furnace and made to inspect.
DIP refers to the plug-in process. the DIP plug-in process needs to first PCB circuit board for drilling. wait for the plug-in when the electronic component’s pin inserted into the PCB circuit board’s playing good hole. two kinds are PCB’s processing method.
DIP
DIP that is “plug-in”, that is, in the PCB version insert parts. this is some parts size is larger and not applicable to mount technology when using the form of plug-in integrated parts. Its main production process for: paste backing, plug-in, inspection, over the wave soldering, brush plate and made of inspection.
CPU chips in DIP packages have two rows of pins and need to inserted into a chip socket with a DIP structure. Of course, it can also be directly inserted into the board with the same number of solder holes and geometric arrangement for soldering. DIP package chips should be inserted . and removed from the chip socket with special care to avoid damage to the pins. DIP package structure forms: multi-layer ceramic double inline DIP, single-layer ceramic double inline DIP, lead frame DIP.
The difference between PCB and PCBA is “PCBA = PCB + Assembly”. that is, the board without the assembly of electronic components called PCB. has been assembled to complete the electronic components of the board called PCBA.
DIP
And PCBA refers to the PCB after SMT placement or DIP plug-in the entire process. or refers to the finished board has assembled electronic components. and in the industry generally refers to the one-stop circuit board processing services. from PCB board to device selection to SMT placement or DIP plug-in. finished assembly test.
SMT
In summary, we should be able to distinguish between PCB, SMT, DIP and PCBA. PCB refers to the circuit board, SMT and DIP refers to the processing of PCB. and the PCB board for SMT placement or DIP plug-in true process for PCBA. besides, the difference between PCBA and PCB is a bare board, a finished board. In addition, the difference between SMT and DIP is a kind of mounting process, a kind of plug-in process.
