If the flex circuits cannot be reflowed
immediately after prebaking, they must be stored in a dry box or nitrogen cabinet until they can be processed.
The solder paste has reflowed
correctly, and there is evidence on the pad of the joint and how the solder had successfully wetted up and around the contact to form a continuous fillet before the pin detached.
StencilWasher MP automatic misprint and stencil cleaner removes non-reflowed
solder paste and adhesives from assemblies, stencils and screens, including reflowed
The ProcessMate 6100 is easy to set up and operators are able to visually observe solder being reflowed
to prevent common soldering defects.
Fourier transform IR spectra of the reflowed
flux residues show how reflow profile conditions and atmosphere affects the decrease of a peak around 1700 [cm.
The data show poor solderability when coupons were reflowed
This example was found after reflow when the rest of the assembly had reflowed
In one case, the board was reflowed
before the paste was printed and heated for a second cycle.
Videos of the reflow process showed that both pastes reflowed
well in nitrogen.
For boards reflowed
with nitrogen, the data show applying nitrogen in the reflow areas results in only slightly better through-hole penetration.
In this instance, they are reflowed
through the oven together and with the board.
Measurement Variation in the Fill of Intrusively Reflowed
Lead-Free Solder Joints with Different Board Finishes by X-ray Inspection"