15Pcs PCB Protoboards,YUNGUI 5X7cm 1-2-3 Perf Board Circuit Board Strip for Electronic Project and Electronic Experiment

These protoboards are excellent quality and a great size for small to medium electronic projects. At 5x7cm, they’re large enough to fit multiple components but still compact for breadboard-sized builds. The holes are evenly spaced at 2.54mm pitch, and the copper pads take solder cleanly without lifting. I like that the set includes 15 boards, which makes it easy to work on multiple projects at once or keep spares on hand. The boards are sturdy and don’t flex, and the strip layout makes wiring simple and organized. They’re perfect for moving a design from a breadboard to something more permanent. Great value for anyone doing DIY circuits, Arduino/ESP32 builds, or classroom electronics experiments. Dependable, easy to work with, and plenty in the pack

Lets start with the cons, which should be obvious, but since people are confused: No, these are not plated through hole PCBs. Yes, soldering on them will be different than through hole PCBs since the solder won't wick through. You won't get the mechanical strength you will from plated through holes. But these are cheap, you get what you pay for. That said, these are great for small projects and beginners. Spacing is good so it's hard to bridge. Holes are drilled out well. Layout is good for DIPs. I haven't had any problems with lifting pads, but I wouldn't be surprised if it's hard to desolder since they're not plated holes. So far they're working for me. Just wish we had dimensions for mounting holes.

Good boards. I was surprised how easy it was to fasten via soldering extra components and have them fit... Good spacing.

The copper plating on this board is not done very well. They are good if no fixes are needed. The problem is desoldering of components or slightly longer applying heat causes the copper plating to detach from the board. Not good for beginners and challenging for intermediate solders.

Good for experimenting and building prototypes. I've used these for years. Used to be available from Radio Shack. Very convenient for using IC's

The description states the pads are gold-plated copper, including the through holes. I will forgive the vias aren't plated through since the description doesn't specifically say this despite alluding to it, but I am finding it very hard to believe the pads are 100% copper much less gold plated. Solder will not flow onto this stuff, I've never had such a hard time getting solder to flow onto pads. I tried two different solders, pre-fluxing, light sanding, all failed to stop solder from being repelled by these "copper" pads. Not for me.

one sided board with two vertical rails in the center, and tri-node paths near the dip in center. toward the outer edges, they are single net pads. Single sided, and holes are not plated. 0.1 inch centers. great little board for breadboards using DIP and Thru-hole components.

I've used these for so many projects. Placed two orders already and may place another. I needed to drill out the mounting hole a little for 4-40 screws -- no problem. Also enlarged the component lead holes to accommodate captive screw terminal strips. Need to be careful when unsoldering, as copper traces may separate from the board if not careful.

These are great little units on which to mount DIP chips because the two centre lines can be used for power and ground. I always keep a supply on hand.

Excellent Product

Great if you know what you're doing, have a temp controlled iron, use flux each time, even if your solder has flux core. Better to use hot iron set at about 310 C than a low temperature which might cause longer contact time. Note that the board substrate is some kind of layered phenolic. It isn't protected against humidity. So either seal with a sealant after building your circuit, or use on non humidity, non conductivity, sensitive circuits. But if you know what you're doing, these are super cheap, and other boards from this manufacturer have clever track layouts for DIP IC power rails etc.

Bought these to use for adaptable circuit use. The copper layout allows a lot of flexibility of how you can layout a circuit and components. For example the long copper strip makes a great GRD connection point. The board cuts very easy with a 10" bandsaw and I used a part of the board about 1" x 3/4" to make a 'side' circuit for my Raspberry Pico experiments. The little board holds a RESET and BOOTSEL switch. If you find the copper lifts off the board when soldering, you are using too much heat.

The 1, 2 and 3-hole pads helped minimise jumper wires, and the two copper strips facilitated Vcc and ground connections for my 6 IC prototype. The boards I received DID NOT have copper-plated holes as advertised. I won’t buy these again unless I hear from the manufacturer.