Author Topic: SMD Bus Bars  (Read 7662 times)

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Offline MarchelloTopic starter

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SMD Bus Bars
« on: March 14, 2018, 08:53:57 am »
Hello!

Does anyone know where to find similar SMD BusBars for PCB power lines? (preferably several different sizes)

BR
Mark
 

Offline ar__systems

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Re: SMD Bus Bars
« Reply #1 on: March 14, 2018, 03:32:02 pm »
I doubt these huge chunks of metal will be able to get hot enough in the time normal reflow process takes.
 

Offline MarchelloTopic starter

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Re: SMD Bus Bars
« Reply #2 on: March 14, 2018, 04:41:58 pm »
I made several custom copper buses with dimensions of 20x4x1mm. and soldered them with our standard thermoprofiles absolutely without any problems.
It remains to find something similar from component manufacturers.
 

Offline MarchelloTopic starter

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Re: SMD Bus Bars
« Reply #3 on: April 02, 2018, 08:41:54 am »
Someone, please! :'(
 

Offline max_torque

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Re: SMD Bus Bars
« Reply #4 on: April 03, 2018, 06:36:13 pm »
I just get Laser or waterjet cut "profiles" taken out of copper sheets of the correct thickness.  Watch out for the differing thermal expansion on long lengths, you might want to include some basic forming (bent sections) to absorb that expansion without resulting in the soldering failing or the pcb cracking eventually
 

Offline MarchelloTopic starter

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Re: SMD Bus Bars
« Reply #5 on: April 04, 2018, 10:47:41 am »
I just get Laser or waterjet cut "profiles" taken out of copper sheets of the correct thickness.  Watch out for the differing thermal expansion on long lengths, you might want to include some basic forming (bent sections) to absorb that expansion without resulting in the soldering failing or the pcb cracking eventually

Thanks for answer!
I thinking about waterjet cut, but also about one problem - finish soldering coating.

BR
Mark
 

Online langwadt

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Re: SMD Bus Bars
« Reply #6 on: April 04, 2018, 11:13:58 am »
I just get Laser or waterjet cut "profiles" taken out of copper sheets of the correct thickness.  Watch out for the differing thermal expansion on long lengths, you might want to include some basic forming (bent sections) to absorb that expansion without resulting in the soldering failing or the pcb cracking eventually

Thanks for answer!
I thinking about waterjet cut, but also about one problem - finish soldering coating.

BR
Mark

custom rf shielding cans and such are usually make with photo etch

 

Online thm_w

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Re: SMD Bus Bars
« Reply #7 on: April 04, 2018, 07:40:41 pm »
There are a few varieties here, but its not cheap: http://uk.farnell.com/c/connectors/connector-tools-accessories/jumpers-shunts

If you also google "tin plated copper bar" you will find some bus bar or metal suppliers, then you will need to have it cut to length (could be done with a bandsaw or similar).
These are just a bit too big: http://www.elektronordic.eu/copper-busbars.html 12 x 5 mm, but smaller ones should exist.
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Offline daqq

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Re: SMD Bus Bars
« Reply #8 on: April 05, 2018, 04:57:15 pm »
Quote
I thinking about waterjet cut, but also about one problem - finish soldering coating.
Could you have it cut out of a tin plated sheet? The sides might be a bit of a problem, but with proper flux they should solder quite nicely, even if they are raw copper.
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Online tszaboo

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Re: SMD Bus Bars
« Reply #9 on: April 05, 2018, 05:09:26 pm »
The last time I had to use busbars, they were custom designed, and manufactured to our spec.
If you want just a little more current in your PCB, Harwin has these, but these are small.
https://www.harwin.com/filter/?level=3&code=HLF&tlcode=H
 


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