40pcs PCB Proto Boards SMD to DIP Adapter Plate Converter TQFP (32 44 48 64 84 100) SOP SSOP TSSOP 8 10 14 16 20 23 24 28

I purchased these as breadboarding adapters for several projects, and should have reviewed them sooner, because I haven't had a moment's trouble with any of them. They are professionally made, quality comparable to if not better than similar adapters. The first photo shows one (in green) with an ATmega128A4U attached, with decoupling capacitors. The blue one in the foreground is an SMD adapter from Adafruit, and frankly I prefer the QLOUNI ones. Solid fiberglass substrate, solder mask, silkscreen, plated-through holes. Several of these have been reflow-soldered to begin with, but later resoldered, unsoldered, resoldered again, treatment that had messed up commercially manufactured boards in the past, and I've had not one case of charred fiberglass, discolored solder mask, lifted traces, or pulled-out plate-throughs. And I work exclusively with lead-free materials now, so my iron is hotter than in the old days. In a few cases where I've accidentally smoked a microcontroller, I need only detach it with a heat gun, unsolder the header pins and whatever else I had attached, clean the board, and use it again as if it were new.The second photo shows a closeup of two of the board types. The ones attached together snap apart easily and cleanly. What I wanted to show here is the silk screening, which shows the package type, number of pins, and pin spacing, which I find convenient for picking the right adapter from the lot. On the other side is a layout for a different package, sometimes with the same number of pins, sometimes not, but it's clearly marked as well. The holes around the periphery perfectly fit standard header pins. This is one of the few products that worked exactly as expected and does the job well. I don't hesitate to recommend them to anyone doing SMD work. And at 10 bucks for 40 of them, they're a bargain.

Good Quality

These worked fine for my application (TSSOP breakout), but you can find the exact same board much cheaper by ordering from the source (China)

Manully soldering a TSSOP package with 0.65mm pin pitch is not for the faint of heart, but was able to successfully solder a Silicon Labs C8051F530A in a TSSOP-20 package to the compatible proto board, add headers, decoupling caps and a pullup resistor, program the 8051 and replace a malfunctioning ADAM45P5216G controlling an indoor air purifier. The devices are not pin compatible, but are 5V supply level and I/O level compatible. The 8051 device power pins are not on the corners where the proto board has heavier traces, but there was enough copper on the proto board signal traces to supply the required 10ma to the 8051 device without supply sag or other SI issues. These seem to be good quality boards, there were no problems with solder mask, solderability, footprint or connectivity. The air purifier is restored and working well. As Borat would say, Great Success!

These are cool. I only have a use for 2 of them atm. These are double sides so if one pitch doesnt fit the other will. Soldering pads are long to accept different width ic. Good buy for the money and good selection to got a smd project moving.

I have only used one of the boards at this time and I am quite pleased. I soldered (by first) SOIC chip and it was effortless. The PCB leads are pre-tinned and with a low-wattage micro tip (I used an 25w Oryx) it was effortless to solder the chip. Definitely happy with the Proto Board. There are pads on both side of the board to accommodate different pin layouts. The pads extend to 2.54mm (0.1 inch) through hole pads you can solder wires, male, or female headers.

Product converts many different surface mount footprints to through holes. Each board is well labeled for the smt foot as well as pin numbers. I have used boards for more than 1/2 of the different smt foot prints. They have all worked perfectly. Will be buying more of these soon.

Excellent selection of smd prototype boards. Good for projects or learning to solder surface mount parts.