Is it possible to solder a 38 pin TSSOP on a homemade PCB at home ?

[Elektronman]

Is it possible to solder a 38 pin Package (TSSOP) on a homemade PCB at home ?

Hello,
I'm working on a HDMI recorder, I'd like to know if is possible to solder the pads of a female plg HDMI:
HDMI Female solder connector products, buy HDMI Female solder connector products from alibaba.com

with the input of a HDMI receiver chip which is a 38pin DBT package:
https://www.ti.com/lit/ds/symlink/tpd12s520.pdf

Even if is possible, should I be careful about the fact of dealing with differential signals?

Thank you very much

 

[keith1200rs]

You won't be able to solder it on a home made PCB. If you are good at soldering you could do it on a professionally made PCB with solder resist. Without the solder resist you will find it impossible to avoid bridging the pins.

Keith.

 

[Raza]

HI,
I do not see any problem in soldering. If the PCB and solder quality is fine.

 

[keith1200rs]

HI,
I do not see any problem in soldering. If the PCB and solder quality is fine.

A 0.5mm pitch device with no solder resist??!!!

Keith.

 

[alexan_e]

yes it can be done, I have soldered a Spartan20XLVQ100 (0.5mm) and a MAXII EPM240T100 (0.5mm) with liquid flux and a weller soldering iron (simple tip) using drag solder.

see my images

and


It can only be done with a flux (I use kester liquid flux) because it creates high surface tension that keeps the solder on the tip leaving only a small amount on the pin.
Professional Surface Mount Soldering - How To: QFP 64 (Drag Solder) - YouTube

Alex

 

[keith1200rs]

I'm impressed! I find it difficult enough with a professionally made PCB!

Keith.

 

[Raza]

Yes you right, but home made PCB is not defined of what quality and without solder resist. I prepare the PCBs myself with professional quality so I assume same from him.

 

[Elektronman]

what is a solder resist?

 

[barry]

what is a solder resist?

I think he means solder mask. (That's what we call it in the US, anyway). It's a layer of lacquer surrounding solder pads that keeps solder from flowing to adjacent pads. (Unless you're a crappy solderer like me and get solder everywhere anyhow).

 

[keith1200rs]

No, I mean solder resist (in the UK anyway). The translation for Eagle from German comes out as 'solder stop'.

Keith

 

[jpanhalt]

Another trick is to solder all the pins as described with a good flux. Some people even intentionally make solder bridges with excess. I don't. Then use solder wick to s u c k up excess solder. Enough is left under the pins for conduction.

John

s u c k is edited out here.

 

[barry]

s u c k is edited out here.

I ran into that same problem. That s*u*c*k*s.

It happens to be a very useful word, especially when talking about solder and de-soldering vacuum pumps. Protecting us from ourselves.







---We have met the enemy and he is us.