Category:PCB Assembly PCB Assembly Service

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In assembly the bare board is populated with electronic components, called a "printed circuit board assembly" (PCBA). In through-hole technology, the component leads are inserted in holes surrounded by conductive pads; In surface-mount technology (SMT), the component is placed on the PCB so that the pins line up with the conductive pads or lands on the surfaces of the PCB.

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correct way to obtain the accurate temperature profiling for oven reflow? Reply 2017-02-28 21:30:16
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azhar

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Hi all,
Is there anyone know the correct way to obtain the accurate temperature profiling for oven reflow? Are below claims true?
(1) Instead of full components on the PCBA (Motherboard), the profile taken from PCBA with few components can be considered accurate. In other words, reflow profile from incomplete PCBA(Some SMT components are not mounted) is the same as reflow profile from PCBA with full complete component mounted. (2) This component(DPAK type) has heat sink at the bottom and is located on the big copper layer area (Light geen solder mask color indicate copper layer underneath). Question: In this case, attach thermocouple wire to the component lead is sufficient to obtain accurate temperature profiling.
These 2 claims sounds weird to me but I need confirmation from expert here.
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Statement: This post is only the personal view of the author and does not represent the opinions of ALLPCB.com.

nestandart

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Very valuable!

Bartley

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This post is really interesting.

yourname

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I am happy that you shared this helpful information with us.Please keep us up to date like this.

Gregor Macek

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My favorite psot here. Its very impressive and helpful.
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