Category:PCB Assembly Solder Paste

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Solder paste is a material used in the manufacture of printed circuit boards to connect surface mount components to pads on the board. It is also possible to solder through hole pin in paste components by print solder paste in/over the holes.

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Search Results: 220 Threads,22 Pages
5 answers
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How to rejuvenate solder paste?

We use water soluble solder paste. When it gets a little dried out, can we add something to rejuvenate it? Liquid flux? We do not place components, just print and reflow the solderpaste so solde... (See More)

Sergey Alexandrovich
2017-03-01 00:24:22
javierdiazespana
2017-03-03 00:24:22
3 answers
107 views

Kester Type R520A, Alloy SN96.5/A63.0/CU.5 paste

We are using Kester Type R520A, Alloy SN96.5/A63.0/CU.5 paste which is applied using an MPM Accuflex machine. Our plant Humidity is 38 degrees. We are seeing insufficient paste post stencil on fine pi... (See More)

Paul K. McKneely
2017-02-28 21:43:48
Paolo
2017-03-02 21:43:48
4 answers
247 views

solder wicking on components termination

Hi, Recently we have encountered solder wicking on components termination (total of 13 pcs of components on one pcb)with Ag/Pd finishes during lead-free reflow soldering. The pcb is LF HASL surface fi... (See More)

Christian
2017-02-28 20:36:58
luizleo2001
2017-03-02 20:36:58
5 answers
59 views

Alpha lead free water solder paste

Looking for some opinions on what the best, readily available, Alpha lead free water sol paste is out there. Only thing I can see on their website is the WS-819. Anyone with experience with this? We c... (See More)

Franco Piccirelli
2017-02-28 20:21:42
adam.yh.lee
2017-03-02 20:21:42
5 answers
160 views

63/37 Solder Cracking

Guys, We're seeing what looks like an issue where through hole solder joints from our ive solder process are cracking during the cooling phase of the soldering process. This was detected during therma... (See More)

Sergey Alexandrovich
2017-02-28 19:25:15
nopphadon
2017-03-02 19:25:15
4 answers
185 views

Paste Alignment Checking

What film do people use to check paste alignment on PCB's? We used to use a mylar but it is now obsolete and the last stuff that we ordered was more like cling film. (See More)

lacosz2
2017-02-28 17:27:21
osman
2017-03-02 17:27:21
3 answers
154 views

solder paste

hey am working in continuos improvement dept and am lokking foraward to save time and cost by imlimenting solder paste catridges in place of jars can any one help me out in this topic! (See More)

Alain
2017-02-28 16:43:36
Hugo Marques
2017-03-02 16:43:36
3 answers
88 views

Dry Solder Issue

we face the problem to last month dry solder issue.when we found PCB is dry. (PTH not fill not properly)then we change the parameter like flux Tank pressure increase 130 to 250. after these activity P... (See More)

Robin Moons
2017-02-28 14:23:22
ivo.colle
2017-03-02 14:23:22
1 answers
90 views

reduce solder ball

Hi, I am searching a method of reflow process for less / nothing solder ball defect. (See More)

Bob
2017-02-28 10:37:11
Clive Goodfield
2017-03-02 10:37:11
5 answers
118 views

Solder Paste Glove

So, what kind of gloves do yall (and your operators) use when handling solder paste and used (pasted) stencils? What was the thought behind that decision? Thanks (See More)

Paul McVitty
2017-02-28 04:52:56
cadcae
2017-03-02 04:52:56
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