Bread board quality

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schiirrn

Member
Joined 2018
#1
Hi! my wife buys a lot of bread boards for institutions and in the last two years the quality has severly dropped. Like the holes are not clean and contact is bad and so on. Do any of you have a reliable source for good quality bread boards?
Thanks.
 
#2
Hardly any of us use breadboards since we design our own pcbs and simulate our designs. The old ones I have are not the best quality either.
I did get some free samples from one of the Asian pcb fans, they were good quality.

It’s possible to design your own breadboard too.

Show us an example of what you are currently using and who supplies it.
 
#3
I hate all this junk that has flooded the market. Very poor quality in everything, such as wires with dirty alloys of unknown composition that are not amenable to soldering, crocodiles that dry out the casing and won't open, breadboards that don't make contact and the list is endless.
I have start to use breadboards recently but I have disappointment completely!
 
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#5
Without seeing what you are using it’s possible that if they are bare exposed copper that’s it’s oxidized so bad that they need to be cleaned. In the old days when we made/etched our own, we would use some abrasive cleaner, a brand called Ajax to clean the oxides off

I got the free samples from either pcbway or jlcpcb, I only use jlcpcb these days. They were small pcbs as samples but using the standard process of smobc( soldermask over bare copper), Hasl plating( hot air solder levelling) Pb/Sn are standard , Pb free optional, same as Au
 
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#6
There seems to be miscommunication. I'm talking about these:
shopping.jpeg
 
#7
ever break one apart...there simply folded strips formed to hopefully spring clip to whatever leads are inserted...and that's where the problems start, any difference in size of adjacent pins can lead to bad connections.
i've always wanted a breadboard that was designed like an ic test socket where once all pins where inserted a lever added pressure to insure good connections
1739888285077.png
 

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#12
Agree, just clicked on the 3M link. Ouch. You could make a dozen real pcb boards trial and error and still be ahead. I think I usually pay < 10 for a similar sized solderless breadboard, like the adafruit branded one digikey sells.
 
#13
I used those old breadboards for a long time when I was prototyping low-speed circuits. But I found that they have pretty high parasitic capacitance between the lanes -- they basically are parallel capacitors due to their construction.

Don't get me wrong, they are great for circuits that operate at relatively low speeds. However, I have to caution you regarding those parasitic capacitances. If you wire up a very high-gain transistor amplifier the parasitic capacitance can become much larger due to the Miller effect. So it all depends on your particular design!
 
#14
The particular use case is teaching undergrad students how to rig up a 555 timer and make it do it's things and build up 386 amplifiers. Stuff like that. The parasitics don't matter. But losing time and introducing extra layers of frustration because a third of the holes in the plastic are too small or not holes at all etc. does matter a geat deal.
 
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