Printed Circuit Board Assembly & PCB Design SMT Electronics Assembly Manufacturing Forum

Printed Circuit Board Assembly & PCB Design Forum

SMT electronics assembly manufacturing forum.

Reflow Solder REsults

Views: 1497


Reflow Solder REsults | 13 January, 2016

We are experiencing a few issues every now and then with acceptable reflow results? We have changed solder paste, thus reflow profile types and even reflow ovens but we still seem to get some not so good reflow on certain pcbs. We can even take PCBs that are the same physical size and weight and 1 reflows flawlessly and the other has dull, seemingly not completely reflowed solder joints? I have some guesses about this issue but no real smoking gun. I would welcome any and all responses to this question as I am not winning this battle currently.

reply »


Reflow Solder REsults | 13 January, 2016

What surface finish are you using on the bare PCBs? ENIG, Silver, OSP, Leadfree HASL, etc.?

reply »


Reflow Solder REsults | 14 January, 2016

Hi There ,

Glad to contact with you , Here is Saimen in Tianweisheng , wish we will have a good cooperation in the furture if we have the honor . Our company is one of the largest custom-made PCB manufacturer in China. We can OEM,ODM,EMS single side,double side,multilayers and aluminum pcb, FPC board in different finishing,with high quality and competitive price.

a.Short lead time. b.Reply and delivery in time. c.Contact with us at any time. d.Good after service. e.Quality check several times before shipment.

Once I receive your reply, I will send our best price for you as soon as possible. Thank you very much, waiting for your kindly reply. Have a nice day

Sincerely ,


Shenzhen Tianweisheng Electronic Co., Ltd Tel:(+86)-0755 2908 7997 whatsapp :(+86)13418454254 Skype: E-mail: Address:Gongle, Xixiang, Baoan District

reply »


Reflow Solder REsults | 14 January, 2016

Do you have pictures? it may caused by the unproper temperature or pads or the adjacent copper plane or other reasons.

reply »

reflow oven profiler

Reflow Oven