Electronics Forum | Mon Aug 29 18:14:20 EDT 2005 | OverTheHill
Good day, We use Loctite 3616 for securing SMD's to the PCB before wave. On rare occasions, we have to remove and replace the secured part. Our operators are having a diffucult time removing parts (large QFP's, etc). My questions to this forum: 1)
Electronics Forum | Thu Sep 01 01:43:12 EDT 2005 | adlsmt
This is a bad situation and if you use (better to rework) adhesive that means it will work worse in your normal process(wont hold). Heat all the leads to reflow temp, twist (rotate)the part untill it breaks free. Most adhesives are not designed for t
Electronics Forum | Wed Aug 19 06:40:06 EDT 1998 | G Thomas
Require a conductive adhesive - either isotropic or anisotrpic - which can be used for 100micron oitch devices. Must be resistant to solvents such as MEK and acetone. Cure below 150C, with possible potential for rework of the conections.
Electronics Forum | Tue Aug 30 10:01:55 EDT 2005 | slthomas
I haven't used that Loctite before as I've never printed adhesive, but you might try reheating the part with a hot air tool...it works pretty well with 3609.
Electronics Forum | Fri Jul 20 08:26:52 EDT 2007 | cyber_wolf
SMT adhesive is hydroscopic. Some types absorb moisture faster than others. Moisture+SMT adhesive= pourous adhesive after cure. Excessive cure ramp rates can also contribute to porosity.
Electronics Forum | Wed Dec 15 12:41:49 EST 2004 | DasonC
Check IPC-A-610C Chapter 12.1, Staking Adhesive
Electronics Forum | Tue Oct 13 18:03:40 EDT 1998 | Sanjay Bhatikar
Sirs, What are the issues involved when a stencil printer is used for printing solder paste and adhesive? UV-curing of adhesive appears to help reduce slump and spread by forming a tough skin on the adhesive blob deposited on the PCB. Is th
Electronics Forum | Thu Feb 13 11:00:07 EST 2003 | cbarnett
Looking for feedback from anyone that is currently screen printing adhesive and having good results. If results are good, what type adhesive and type machine is being used?
Electronics Forum | Fri Jan 09 18:28:34 EST 2004 | Ron W
I'd like to know if anyone could recommend a good high-temperature adhesive that can be used for thermocouple attachment. I've always used high-temp solder and tape in the past, but would like to try using adhesive. Any info is certainly appreciated.
Electronics Forum | Wed Jul 18 09:25:58 EDT 2007 | ed_faranda
They still make SMT adhesive?!?!?! Holy SMOKES BATMAN. I haven't used SMT adhesive in, oh 9 years. But, back in "The Day", I found loctite to be best. Call your local rep in, show them your process and make them earn their money.
