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SP1-50x50-G (Two Pack) SMTpads, Size 1, 50x50mil Pads, Unplated Holes to Ground Plane, 2 Sided PCB, Size 1 = 50 x 80mm (1.97 x 3.15in)

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$7.90

$ 3 .99 $3.99

In Stock
  • Package of two SP1-50x50-G prototyping boards.
  • Square SMT pads on 0.050” centers for surface mount components.
  • Double-sided high-quality FR4 glass-epoxy circuit board with unplated holes. 1oz/ft2 copper with an anti-tarnish coating for easy soldering. Lead free and RoHS compatible.
  • 0.031" (0.79mm) holes (unplated) for connections to ground plane. Just insert a wire and solder.
  • Size 1 = 50 x 80mm (1.97 x 3.15in), 1/16" thick (1.6mm). Four 0.125” mounting holes.


SMTpads is a prototyping circuit board with a grid of pads for 0402, 0603, 0805, 1206, SOT23, and other SMT parts. A grid of 42 mil square pads on 50 mil centers allows SMT components of various sizes and pitches to be mounted. Larger components can span pads. SOIC (50 mil pitch) and DIP (100 mil pitch) integrated circuits can be soldered directly to the pads without adapters. A solid ground plane on the bottom side provides an easy way to make ground connections. There are unplated holes spaced every 500 mils. To make a connection to the ground plane, just insert a wire and solder both sides. Construction Tip: Solder down one strand of 22 AWG stranded wire to make tracks where you need them. Use solid 22 AWG wire for higher current power and ground tracks.


Ogi
Reviewed in the United States on January 20, 2024
Good for prototyping with SMD components.
Radio_Tech
Reviewed in the United States on February 11, 2022
This will work well for small RF/AF amp prototypes. The backside is a ground plane with hole(s) access throughout the board
Optimist
Reviewed in the United States on December 9, 2020
Tried a few quick soldering exercises and I think this can work well for my intended use (building RF circuits using SMD parts). I did not have any problem with the solder flowing to the copper pads (after a bit of practice), and the bonding of the copper to the FR4 is very good. I put down an 0805 resistor as well as a U.FL connector. See photos - but don't judge me on the resistor ;-) With the former, I had to hold down the resistor while flowing solder from a pre-tinned pad to it. With the latter, I was able to easily solder it, starting with the signal trace to get it 'anchored' so I wouldn't have to hold it down, and then placing the iron along the ground contacts and pads and feeding in solder. Bridging pads happened naturally sometimes, which can be good or bad, depending on your desire - but with practice, I think it will be controllable. I have not yet put a wire through the hole to make a via, but when I do, I will use a beefier iron to solder to the large backside ground plane. I was able to mate and unmate the connector without any hint of pads pulling off.For background, I have built RF circuits on boards like these with 90 mil pads on 100 mil centers for a decade or more - using 0805 resistors and drilling holes to make connections to the backside ground plane. This type of protoboard is indispensible for RF circuits at and above 100 MHz, since there is a solid ground plane to control EMI/coupling. Doing this with 50 mil pads/pitch is going to be more of a challenge. Kinda wish 100 mil pad/pitch boards were available, but will try and see how this goes. I do love the pre-existing holes (unplated on these, and plated on a different version I bought). But maybe this is good for other construction/circuits too...Bottom line - these boards have good build quality and are unique, and highly useful for quick prototyping. But plan to practice a bit and have good tools (microscope, tweezers, small-tip iron, and small diameter solder). Will try to update this review later when I get my RF amplifier designed and built :-)
T Wang
Reviewed in the United States on May 25, 2018
I have bought four of these. They look very nice, but the pads all peel off very easily, so you have to keep changing your plans for routing. I have used other SMT perf boards before; none behaves like this.
Ken Talkington
Reviewed in the United States on February 18, 2018
worst experience ever!!!!!
Customer
Reviewed in the United States on May 3, 2017
So much fun
Jesse
Reviewed in the United States on July 21, 2015
These are hefty boards that are very hard to bend. The pads seem to be attached well, the only ones i ever got to lift were with my dremmel when i was cutting it. the only thing i had a problem with was getting parts to wet to the pads with the holes as there is not much copper left after drilling.