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)

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.

I use it to practice soldering, and the double-sided boards give me more to work with. They help me learn to apply just the right amount of solder without it leaking to the other side. It didn’t go well at first, but I’m getting the hang of it. I ordered a set of LEDs, which I soldered using a TS101 with a PD 3.1 cable and an Anker 3.1 PD battery, providing 120W heating up instantly. Good value for the money you get a bunch of pieces

Boards are durable, easy to solder on and great for building my raw circuits.

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

The perf boards seem to be good quality. I haven't run into any missing or defective pads. The jumpers fit snugly on the pins, and the pins fit snugly in a breadboard. The screw terminals are about the same quality as I've seen on some very cheap electronics modules. That is to say not the best, but they do the job if you're careful not to strip out the slots on the screws. But that's why it is nice to load up on spare parts with kits like this. The only really disappointing part of the kit is that the headers, which are very long, are not designed to be cut down or snap apart.

I paid around 70 cents for each of these boards. They are roughly the same (or slightly worse) quality than the cheap online PCB manufacturers, but the added benefit is the variety of footprints and 1 day Amazon shipping. Lots of good parts only come in SMT footprints which makes these really handy. I had put a SOIC-24 footprint instead of TSSOP-24 on my board, and I was able to use one of these to actually surface mount to the board and solder on the correct component to the adapter board. They all come with mounting holes which also makes these great for any sort of 3D printed project or serious mistake requiring mounting to the enclosure.

Excelente en entrega, muy prácticos, muchas medidas para hacer prototipos con circuitos.

So useful for my school students