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jmartens1978

Newbie level 4
Can SMD patterns designed for wave soldering be sodered using reflow process?

bert_kak

Member level 5
Can SMD patterns designed for wave soldering be sodered using reflow process?

you cannot use SMD patterns for wave soldering. Wave soldering is for through hole components. Check this video.

jmartens1978

jmartens1978

Points: 2

keith1200rs

Super Moderator
Staff member
Not true. Wave soldering was used a lot when surface mount was introduced. I seem to remember the pads were different. For wave they need to be oversized. For reflow they can be smaller than the component pad in some cases.

Keith

jmartens1978

jmartens1978

Points: 2

bert_kak

Member level 5
Not true. Wave soldering was used a lot when surface mount was introduced. I seem to remember the pads were different. For wave they need to be oversized. For reflow they can be smaller than the component pad in some cases.

Keith

Really, i'll take a look at that. thanks for the info.

keith1200rs

Super Moderator
Staff member
Try and find some old device data sheets. I seem to remember they would give two land patterns depending on soldering method. Motorola and Philips discretes for example.

Keith

jmartens1978

jmartens1978

Points: 2

keith1200rs

Staff member
There is some info here: http://www.kemet.com/kemet/web/homepage/kfbk3.nsf/vaFeedbackFAQ/64F3744BFC060EE985256BCD004EBC13/$file/F2105A.pdf Here is an AVX data sheet which gives wave and reflow land patterns. Keith. Attachments • 16380.pdf 308.5 KB · Views: 5 jmartens1978 Points: 2 Helpful Answer Positive Rating bert_kak Points: 2 Helpful Answer Positive Rating jmartens1978 Newbie level 4 Thank you for you input, I greatly appreciate it. I was looking at the Yageo 1206 resistor patterns. They had recommended a wave soldering pattern and reflow pattern for surface mount PCBs. Since my only knowledge was in through hole PCBs I needed wisdom from other designers on the world of surface mount PCBs. Originally I had designed my PCB with the wavesoldering footprint and the I discovered that the Company that was going to assemble the PCBs uses reflow. So I was wondering if any one had actually put a PCB with the wave solder footprints through the relow process. How would the boards turn out??? Is the reflow process of soldering the new standard in the surface mount world?? keith1200rs Super Moderator Staff member I doubt anyone uses wave for surface mount any more (I may be proven wrong in a few seconds by someone!). I wouldn't expect any particular problems using wave footprints for reflow soldering, but the other way round would be a problem, I think. Keith. jmartens1978 jmartens1978 Points: 2 Helpful Answer Positive Rating bert_kak Member level 5 There is some info here: http://www.kemet.com/kemet/web/homepage/kfbk3.nsf/vaFeedbackFAQ/64F3744BFC060EE985256BCD004EBC13/$file/F2105A.pdf

Here is an AVX data sheet which gives wave and reflow land patterns.

Keith.

Thanks Keith, I just remember seeing like these before but I never used the wave soldering pattern.

jmartens1978

Newbie level 4
Thankyou for the input kieth1200rs.

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