Hey guys (another post by me!)
I am about to order a PCB for a project and I have never done this before. There are loads of different things to choose from and the 'handy help' buttons don't really give any handy help at all to what the differences actually are.
In terms of board layers .. is there any benefit to having more than one? The circuit I need is simple (its just an led array). Would having more layers help with thermal issues?
Base material: FR4 Tg 130 / FR4 H Tg 170 - FR4 is a composite fibreglass material and I assume the 130/170 is the thickness? No idea what the H stands for!
Does the copper weight matter at all?
Solder mask: that is the (usually) green cover on the PCB that protects the PCB? I assume its best to have it on top and bottom for protection.
Silk screen: is the 'map' of where everything connects and goes? So I should definitely have that, probably just on the top.
Surface: There are lots of options here .. HASL from what I can see is being dipped in solder and then using hot air to cut away the unneeded solder. There are two HASL options ('not RoHS' and 'lead free'). Another option is Electrolytic Gold which is probably more expensive so I'll ignore that. OSP is an organic process but doesn't last too long. Immersion gold is also expensive. Immersion silver is also an option that looks like it may be ok.
Would HASL be the best one to go for?
I just need a PCB on which I can connect my LEDs and an Arduino, so it doesn't need to be really fancy or anything. Just as long as it works! (And isn't too expensive)
Also - do you recommend any easy to use software to create the PCB schematics? There are loads of free packages out there so its more a case of if you'd recommend any specific one over the others?
Thanks!
I am about to order a PCB for a project and I have never done this before. There are loads of different things to choose from and the 'handy help' buttons don't really give any handy help at all to what the differences actually are.
In terms of board layers .. is there any benefit to having more than one? The circuit I need is simple (its just an led array). Would having more layers help with thermal issues?
Base material: FR4 Tg 130 / FR4 H Tg 170 - FR4 is a composite fibreglass material and I assume the 130/170 is the thickness? No idea what the H stands for!
Does the copper weight matter at all?
Solder mask: that is the (usually) green cover on the PCB that protects the PCB? I assume its best to have it on top and bottom for protection.
Silk screen: is the 'map' of where everything connects and goes? So I should definitely have that, probably just on the top.
Surface: There are lots of options here .. HASL from what I can see is being dipped in solder and then using hot air to cut away the unneeded solder. There are two HASL options ('not RoHS' and 'lead free'). Another option is Electrolytic Gold which is probably more expensive so I'll ignore that. OSP is an organic process but doesn't last too long. Immersion gold is also expensive. Immersion silver is also an option that looks like it may be ok.
Would HASL be the best one to go for?
I just need a PCB on which I can connect my LEDs and an Arduino, so it doesn't need to be really fancy or anything. Just as long as it works! (And isn't too expensive)
Also - do you recommend any easy to use software to create the PCB schematics? There are loads of free packages out there so its more a case of if you'd recommend any specific one over the others?
Thanks!