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

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!

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.

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

Just the right mix of PCB's for a class I was taking for learning how to solder

I purchased two packages of these boards, and I was pleasently surprised at the manufacturing quality. The boards come packed neetly within a small plastic container, which helps to keep them organized. The product photo shows all the boards separated, yet many of them were still connected to each other. Clearly, they were manufactured in panels, with score lines to allow individual boards to be separated from each other. I quickly snapped my boards apart cleanly and easily along the score lines. The larger boards with TQFP footprints were not attached to other boards, and came with nicely radiused corners. The only minor defect I encountered was one of the boards had silkscreen pin numbers which were printed with the right edge touching a score line so the characters were affected slightly when I snapped the board from the panel. I did not deduct any stars because I could still clearly read the pin numbers as shown in the photo. I was pleased with this purchase and would confidenly recommend these boards.

I got these to work on some prototypes for my raspberry pi projects and I am very happy with it. So many different options so you aren't so limited and can really find out what you need before you start getting more serious. I wish there was more in the bundle but you get what you pay for and they have other options that are more involved but more costly as well, so that is a thing. Buy it if you need it.

Almost everything you need for quick breadboard making.

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.