Posts Tagged ‘reflow oven’

3 Defects of Putting Nitrogen into Reflow Oven

Wednesday, January 9th, 2019

We have talked a lot about the defects of putting nitrogen into reflow oven before. Thus, today Best Technology would like to discuss some defects of putting nitrogen in to the reflow oven with you.

reflow oven

reflow oven

‚ąö¬†Nitrogen¬†is very expensive.

‚ąö¬†If the heating effect is better, there will be tombstone effect happening on the resistance and capacitor. This effect is beneficial to most of components, but it will deteriorate the tombstone effect¬†of the small chip.

‚ąö¬†Besides, the nitrogen will also increase the wicking effect of soldering tin, allowing the soldering paste along the fillet weld of the components to climb to a higher place. Maybe it is good for some fillet weld of components, but it is not friendly for some connectors. Because the fillet weld of connectors is the connected to¬†other components.¬†It will cause other problems if tin flows into these connections. What‚Äôs more, it will lead to short circuit if the tin climb to a higher place as the fillet welds of connectors are very closely.

PCB with components

PCB with components

Best Technology, a professional PCB solution provider, is always dedicated to catch up with times. Our unique technology and high quality products will give you a competitive supply of printed circuit board and PCB assembly and make your wearable devices more excellent. To learn more, contact us at 0755-29091601 or check our website: https://www.bestpcbs.com

5 Benefits of Putting Nitrogen into Reflow Oven

Monday, January 7th, 2019

The reflow oven is one of the indispensable equipments in SMT. Putting the PCB with components goes through the reflow oven then the solder paste adhering on the printed circuit board will melt. After the solder paste getting cold, the components will adhere to the PCB stably.

Picture of reflow oven

Picture of reflow oven

After you have learned something about reflow oven, have you ever know how to make the reflow oven work better? Here are 3 benefits of putting nitrogen into reflow oven listed as following:

‚ąö¬†It is able to make the surface tension of solder paste get smaller which is good for the components adhering to the PCB more easily.

‚ąö¬†It can decrease the oxidization in a certain. Because the nitrogen is a kind of inert gas which is hard to produce chemical compound.

‚ąö¬†Reducing the rate of void. Because the rate of void decreases with oxidation.

‚ąö¬†Nowadays, some manufacturers also develop to put nitrogen in wave soldering oven. It is able to decrease the speed of oxidation of liquid tin in the bath. As the slag of tin will be formed when the liquid tin contacts with air. After that, the slag of tin will adhere on the printed circuit board. If it happens to the connect between two spots of tin, it will cause short circuit.

‚ąö¬†It can increase the rate of tin feeding of pin components and then they will combine with the printed circuit board firmly.

PCB with components

PCB with components

Best Technology, a professional PCB solution provider, is always dedicated to catch up with times. Our unique technology and high quality products will give you a competitive supply of printed circuit board and PCB assembly and make your wearable devices more excellent. To learn more, contact us at 0755-29091601 or check our website: https://www.bestpcbs.com