YUNGUI 50X100mm PCB Boards,12Pcs Copper Stripboards Prototype Perfboard for DIY Soldering Electronic Projects

These are exactly what I hoped they would be. The overall quality is fine for a phenolic PCB. The holes are drilled not punched, the traces are well formed but unplated. Unplated traces means it is super easy to cut and remove the foil with a hobby knife. The foil is very thin. Do not overheat and use only a temperature controlled soldering iron or you will have problems like the one reviewer had. Some lead free solders may dissolve thin copper foils. Phenolic is cheaper than fiberglass and splinters if cut improperly so use a saw. This would be frustrating for anyone starting out so spend the money on nice fiberglass protoboards with plated through holes if this is your first protoboard. These are really useful for quick sensor or audio projects that use 0.1" center components. They make builds extra fast and easy. They are inexpensive enough that you can build projects and not worry about using up all your expensive protoboard.

We used this board to create prototype circuitry to be connected to ESP32 development board. Many universal PCBs have either disconnected soldering potions or are arranged into connection strips that need to be cut. Some other boards mimic breadboard connections. The latter would be excellent except for the fact that ESP32 dev board is too wide to be used with breadboards and hence also with the PCBs that mimic them. This board is designed so that it can be used with the ESP32 when it is used off-center. So far this is the only such board I could find on Amazon.

Nice. Nice layout. Pads seem secure enough. Work well.

I cut one of these up with a carbide-tipped chop saw. Expected it to break into flying pieces. It cut real clean. Then it soldered very well. Even soldered some SMT parts with paste and heat gun. All worked fine.

I live how these are patterned out like a breadboard! Great addition to my Electronics Laboratory Bench!

I like the varied trace configurations. I expect to cut out desired segments of a board to use in lieu of a terminal block to ensure good connections and greatly minimize space requirements. Nicely packaged and VERY quick delivery.

Do not use if you plan to solder more than a few components close together. The copper tracks will detach fully or partially and you will spend hours with 6x magnifying goggles and an oscilloscope later. The setup: * Fine soldering iron with digital temperature control set up on 240 deg. Celsius and with a needle thin tip. * A third hand with a stand. * Solder delivered as a flux cored 22AWG wire. * 3x magnifying goggles to point the needle tip precisely * Was soldering electronic components like 1/4W resistors, MOSFETs, small transistors, jump wires .. etc. soldered close together (about 50 components per board) * The thickest wires were 22AWG leads the rest were jump wires 28AWG The issues: Keeping the iron touching the board for more than 4 sec. leads to copper track delimitation in about 50% of the cases. At 4sec. max it, at a first glance, did not. However, pressing against a soldered resistor while just handling the board caused the coper laminate to detach in about 25% of the cases. If you twist a soldered 22AWG wire led to the same results. Even if you do not see problems the copper track can still be in some stage of de-lamination which created RF noise or capacitance or even caused tracks to be shorted later when leads were twisted during the board installation. Conclusion: JUNK !!!

Most projects require integrated circuits and semiconductors, This board has proper hole spacings and I especially like the fact that it allows multiple (up to 4 solder) points for every IC lead connection. This is usually sufficient so one does need additional wire jumpers. Practical and affordable for experimenters and hobbyists.