5 July 2012

Assalamualaikum..

We begin the task for soldering the component 

after the component were just looking by En.Mazran my supervisor, defectiveness were checked.

En. Mazran give us task to identified the which defectiveness of the soldering. The international standard soldering and standard surface mount assemblies. We are require to revise the two module:

- module 4 ( soldering)

- module 7 ( surface mount assemblies)

After the revision the two module me have identified several defectiveness such as Excess solder - solder webbing/splashes, soldering anomalies - Pin Holes/Blow Holes.

  

figure : The new model of IPC book

before we solder, we must know the several type of component such as resistor, capacitor, relay and etc. The polarity of the diode and led must be identified.

figure : the circuit

which of the component is not with him, him told to every of member to dis solder the component from the last project. 

the tools most important is sucker.  

• note : do not use sucker to the PCB board 

the sucker would discard the line of PCB board