What wire AWG to use for protoboads?

Thread Starter

Wendy

Joined Mar 24, 2008
23,798
Protoboard 63 columns png.png

This kind of board I call protoboard. What is the recommended AWG to use with it? I usually use 24 AWG solid, I've been seeing 22AWG solid on sale, While you can use 24 AWG solid I don't think it is good for the board. Discuss?
 

dl324

Joined Mar 30, 2015
18,259
I've found that #22 works best and #24 is just a little too skinny.

I mainly use #24 now because wire has gotten too expensive for me (used to be $3/100', now it's $8) and I have thousands of feet of bulk CAT5 cable. I find that the insulation slides on the wire too easily and the wires pull out of the solderless breadboard a bit too easily.

Anything larger than #22 is, well, just too large.
 

Thread Starter

Wendy

Joined Mar 24, 2008
23,798
22AWG historically has been a bear to insert for me, which leads me to speculate it is too big, One thing nice about a forum like this, stupid questions are allowed, even from a moderator. I would rather ask than go off half cocked.
 

ebp

Joined Feb 8, 2018
2,332
22 AWG used to be the standard about a hundred years ago. 24 AWG generally works reliably (which is a good thing, because many ceramic cap leads aren't even that big). How the end of the wire is cut has an influence on insertion force. It it is cut with cutters that leave a wedge shape, the orientation of the wedge makes a big difference.

I suspect that back in the days when ProtoBoard was a registered trademark and there were only about two competitors on the market, quality might have been better.

As an aside, do not run vast currents through the power distribution strips. One of my clients did this to one of my genuine ProtoBoards. The poor thing played fuse at each and every "gap" between the groups on the strip. I wouldn't have believed that possible. It was a 2 kW battery charger capable of delivering 80 A continuously and going to batteries that wouldn't complain if you asked them for a thousand amps.
 

wayneh

Joined Sep 9, 2010
18,093
I prefer 22. Smaller leads, such as on decoupling caps, usually connect just fine but are “wobbly”. They don’t hold the item in place mechanically.

When I have an issue with 22 not wanting to go in, it’s usually because of a fat spot or a curve where the wire was cut. A clean end goes right in.
 

MrChips

Joined Oct 2, 2009
34,689
The vote is 22AWG and/or 24AWG, nothing smaller or larger.
If 24AWG is easier to insert then go with that. I never have to pay for wire. I collect scraps after the telephone-line installer has left the building.

Just remember that breadboards are for breadboarding. The circuit will be taken apart once you've finished debugging and testing.
 

cmartinez

Joined Jan 17, 2007
8,737
The vote is 22AWG and/or 24AWG, nothing smaller or larger.
If 24AWG is easier to insert then go with that. I never have to pay for wire. I collect scraps after the telephone-line installer has left the building.

Just remember that breadboards are for breadboarding. The circuit will be taken apart once you've finished debugging and testing.
Call me a heretic ... but I never breadboard (well, maybe only when I want to prove the iteraction between two or three components, but that only happens once in a dozen blue moons, or so)

I always sim in LTSpice (if I can) and then design directly on AutoCAD and etch a PCB. Then I patch it if necessary, and retest it several times. Normally the second time around everything works how it should.
 

ebp

Joined Feb 8, 2018
2,332
I have breadboarded some bits at pieces. A lot of the things I've designed didn't lend themselves to any sort of breadboarding technique, so PCBs were almost always my next step after paper. Affordable simulation came too late for most of what I did. Now I just wonder what I should do with a vast accumulation of parts that I'll never use. I wish I could send parts by email.
 

dl324

Joined Mar 30, 2015
18,259
Now I just wonder what I should do with a vast accumulation of parts that I'll never use. I wish I could send parts by email.
What do you have and where are you located? I'll pay priority shipping in the US for things I might be able to use...
 

Sensacell

Joined Jun 19, 2012
3,777
I do a lot of SMD prototype work, things get really small.

I use tinned bare #24 AWG wire and #30 AWG wire wrap wire.
A spool of micro Teflon tubing is the bomb, it's just the right size to slip over the bare #24 wire.

Teflon doesn't melt, so you can relax a bit more when soldering, the results look really clean as well.
It's much easier to slip a piece of Teflon over a wire than it is to cut and strip a piece of hookup wire.
No sniffing burning insulation either.

Wire wrap is great when you have lots of closely spaced pins to solder to.
 

dl324

Joined Mar 30, 2015
18,259
Yep I can see they would. Thanks for the idea.
Those jumpers are one of the things I'll buy from AliExpress. They come in two lengths and 3 polarities (M-M, M-F, F-F); 40 of each for under $2 as I recall. And free shipping.
 

dl324

Joined Mar 30, 2015
18,259
Part Number? for a very lazy girl?
https://www.aliexpress.com/item/fre...951.html?spm=a2g0s.9042311.0.0.27424c4dzUtoGZ

The price has gone up to $2.99 from the $2.53 I paid for my last order. You can search for product from other sellers that might save you a few cents.

Jameco seems to sell the same part for a lot more. The M-M jumper is $4.95/40; which is why I buy from China...
https://www.jameco.com/z/ZW-MM-20-B...ale-to-Male-Colored-Jumper-Wires_2260738.html
 
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