Smt Application Quiz

The 600 machine slide is not removeable

600 unit can ONLY be ordered as a double or single sided machine. It cannot be supplied with the interchangeable cartridge as the slides are not removeable.

In a single-sided machine, only the top side of the board is cleaned. This means that the machine is designed to clean and remove dirt, dust, or debris from the surface that is facing upwards. The bottom side of the board is not cleaned in this process.

No tools are required to refresh and change the Pre-sheeted Adhesive Roll. This means that the process can be done without the use of any specific tools or equipment.

The maximum speed of the SMT machine is 40 m/min.

SMEMA cables are the option, not the SMEMA software

The door for the optional brush cartridge is a different color to show at a distance whether the machine is operating in double or single sided mode. Additionally, it is designed this way to make it easy for the machine operator to know that there are different cartridges in the machine.

Even wrapped in plastic, boards will still have contamination on the surface making it necessary to clean them. Generally suppliers do not package boards in a cleanroom environment.

The SMT should be installed after anything which might cause contamination and before the next critical process, for example screenprint or adhesive placement

The anti-static bar is fitted on the top exit of the SMT machine. This placement allows the bar to effectively neutralize any static charges that may have built up on the components or circuit boards during the manufacturing process. By placing it at the top exit, the anti-static bar ensures that any static electricity is discharged before the components leave the machine, reducing the risk of damage or malfunction caused by electrostatic discharge.

SMEMA is a feature

The DCR handroller can be used in an SMT company for multiple purposes. It can be used to manually clean boards before screenprint if there is no automatic board loader or if the printer is semi-automatic and requires manual loading. It can also be used to clean stencils, as well as work surfaces or repair stations. Therefore, the correct answer includes all these options as valid uses for the DCR handroller in an SMT company.

Contact cleaning is the best and most effective method because it has several advantages. Firstly, it cuts through the boundary layer, which refers to the layer of air and contaminants that can accumulate on the surface. By cutting through this layer, contact cleaning ensures that the surface is thoroughly cleaned. Secondly, it doesn't blow contamination around like air or gas methods can do. This means that the contaminants are effectively removed from the surface instead of being spread elsewhere. Thirdly, contact cleaning doesn't scratch the board surface, ensuring that the surface remains undamaged. Lastly, it is capable of removing particles down to sub micron in size, ensuring a high level of cleanliness.

This option is not available in the 600 unit due to a different slide design which is not removeable

Customers can select either front or rear

Being able to see the contamination collected on the Adhesive Roll provides instant feedback to the operator that the machine is working. This allows the operator to have confidence that the machine is functioning properly and effectively removing contamination. Additionally, it allows for the analysis of the root cause of contamination, helping to identify and address any issues or sources of contamination. Lastly, it lets the operator know when the paper is due for changing, ensuring that the machine continues to operate efficiently and effectively.

The SMT will help to improve the yield but does not provide or analyse data. The customer's SPC (statistical process control) will do this.

The photograph suggests that the joint integrity of the pad is compromised due to a reduction in solder paste. This reduction in solder paste could potentially cause a short circuit. Additionally, the long term reliability of this joint may be compromised.

The interchangeable optional cartridge is not available in 600mm machine, as the slides are not removeable.
Double and single sided cleaning can only be achieved if the extra cartridge is included.

Some customers like to fit the static monitor "after" the screenprinter to monitor and measure static levels after the print process.