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
1 answers
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Re-soldering QFP

Anybody with experience on such a rework ? The QFP has thermal pads underneath the body and needs to be re-connected when subjected for rework... Any ideas ? (See More)

kelvint
2017-05-06 04:16:53
wojciech.kulicki
2017-05-06 04:44:35
1 answers
109 views

Wave solder capability study

I wanted to know what other folks are doing for wave CpK studies. I thought that conveyor speed, preheat temperature, solder pot temp (never did see a large pt (>1500 lbs) vary by a couple of degre... (See More)

peter.moloi
2017-05-05 03:43:52
cgr-pcb
2017-05-05 10:30:40
0 answers
157 views

QFP144 soldering problem

hi, I have a big problem with soldering uP QFP144 package.All components in PCB are small, only this chip is big and I can't make good temperature profile.Solder joints of other components are s... (See More)

francesco81rs
2017-05-04 21:41:41
0 answers
164 views

When to use Tin/Lead/Silver paste ?

When do you use Tin/Lead/Silver paste ? What is the advantage of using Tin/Lead/Silver paste comparing to Tin/Lead? Do you have to use Tin/Lead/Silver paste only if the components are made from Tin/Le... (See More)

theo_bestenlehner
2017-05-04 04:49:48
1 answers
131 views

Seho Wave Solder

We have an issue with our Seho Wave solder machine. The machine is an 8040C, early 90's model. The problem is that continues to heat the solder up, even once it has reached its specified temp. ... (See More)

erhanarslan75
2017-05-04 02:50:32
peter.moloi
2017-05-05 06:55:20
1 answers
84 views

Conformal over No-Clean

I was talking with my Paste and Flux Supplier about concerns of coating over "No-Clean" flux. Supplier informs me that this should not be a problem, but I wanted to poll the industry. 1. D... (See More)

Gregor Macek
2017-05-03 04:41:49
aleksandr82h
2017-05-04 11:22:39
2 answers
108 views

Latex solder masks

Is there a peelable solder mask which can withstand an automated aqueous wash ? I need to prevent water ingress into SMT modules during the wash cycle. (See More)

sangngean4
2017-05-01 16:19:55
Carlos Ruiz
2017-05-01 23:10:57
1 answers
225 views

Excess solder on pins

We are wave soldering a board having 24 similar thru hole connectors on it, using a wave soldering pallet. The problem is that one particular pin of connector in around 6-9 connectors get excess solde... (See More)

Brook
2017-05-01 14:47:36
Dempsey
2017-05-01 23:53:58
1 answers
114 views

wave solder upgrade

Hi, I'm wondering what the average price of a conversion on a wave solder oven from leaded to lead free is in the uk, has anyone had theirs done recently? Would you let me know roughly what it c... (See More)

frmendozat
2017-04-27 01:34:23
olah.mihaly
2017-04-27 12:19:46
1 answers
159 views

Selective Soldering Equipment

Has anyone worked with an "Inertec ELS 2.0" selective soldering machine? Any idea of who the USA rep is? Or how to get documentation on this equipment that is in ENGLISH? (See More)

Broderick
2017-04-26 08:48:20
Martynas
2017-04-26 09:32:27
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