Skip to main content
Electrical Engineering

Questions tagged [pad]

Ask Question

For questions about PCB pads, which are exposed regions of metal that component leads are soldered to. Use in conjunction with "pcb" and/or related "pcb-" tags (e.g. "pcb-fabrication"), as applicable.

154 questions
Newest Active Bountied Unanswered
Filter by
Sorted by
Tagged with
0 votes
2 answers
1k views

The R(ight) loudspeaker on my AKG-K99 headphones stopped working. I bought a replacement (x2) 'mini' loudspeaker. After soldered the replacement the sound was "weird". No problem. I ...
krg's user avatar
  • 39
0 votes
1 answer
533 views

I have bought an electric heating pad from Adafruit. It works fine if I connect both legs to a power supply directly. However, I would need to connect it to a temperature controller (STC1000) for my ...
Xenon's user avatar
  • 3
0 votes
2 answers
2k views

I need help to fix/replace a DC jack. I messed it up and the board I need to fix used batteries as well but now they wont work because I butchered the DC pads. Is there a way to bypass the DC jack and ...
Elemental Blendz's user avatar
  • 13
0 votes
3 answers
815 views

In Eagle (v9.6.2), the routes fill the holes of my pads. hence when I want to print it, the pads are all black, no drill holes. What am I missing? I know this is similar to Eagle Ground Pour Fills ...
will.mendil's user avatar
  • 111
0 votes
0 answers
148 views

The data sheet for this component, the RPX-1.0, says SW Switch node. Connect 6, 7, and 8 to large copper pad for optimal heat dissipation. Is a "large copper pad" an extra component that ...
DRC's user avatar
  • 107
10 votes
3 answers
1k views

One can sometimes observe rectangle pads in the corners of some IC's footprints: What are they for?
Łukasz Przeniosło's user avatar
  • 1,709
0 votes
2 answers
487 views

Shown below is the PCB of a panel controlling an electric scooter. I accidentally managed to pull out all the wires so they looked as in picture 1. I wrote to the company who advised me to solder it ...
Devu's user avatar
  • 101
0 votes
1 answer
92 views

How does one deal with a situation where a trace has particular clearance spec to other nets, but that clearance spec is not respected by the pads on a component that the net attaches to? A simple ...
rothloup's user avatar
  • 438
2 votes
1 answer
244 views

I am currently designing a board that will need end up getting CE tested, and I am currently testing the effects of different sized decoupling capacitors but I am constrained on space. I want to make ...
James S's user avatar
  • 161
0 votes
0 answers
86 views

I've accidentally used too much force on the board while trying to remove a flex connector and so I've removed a lot of PCB pads as well (see image). I have a new flex connector, but I do not have ...
Chen Avnery's user avatar
  • 1
1 vote
1 answer
66 views

I am trying to draw a footprint in Eagle (datasheet PDF). This isn't the first time I had to draw a part without enough dimensions, but I'm wondering if there is an easier or more precise method. ...
adamaero's user avatar
  • 727
1 vote
2 answers
940 views

So I haven't soldered in years and only have experience with through hole soldering and large components. Today I attempted a repair with a HTC Vive controller. I know where to solder and managed to ...
Z.Davey's user avatar
  • 11
0 votes
0 answers
50 views

I have a SC20 schematic diagram. From the diagram, there is an antenna section as shown. How can I give a pad to this antenna for drawing PCB in EasyEDA? The schematic provided some information like 1....
RAVI's user avatar
  • 1
2 votes
3 answers
796 views

I've been asked to reattach the positive cable that got ripped with the pad from a board given that I own a soldering iron. It seems simple enough to just jump it from a trace. Scraped a bit of the ...
Dimon's user avatar
  • 21
1 vote
1 answer
236 views

I am searching for a linear regulator with tab connected to GND instead of Vout because it would be easier for thermal management. Unfortunately, all linear regulators seem to have their tab connected ...
f4inx's user avatar
  • 27
0 votes
0 answers
2k views

I've similar questions on how to repair solder pads however all the questions so far only talk about solid PCBs. For some reason the solder pad came off this flex circuit after I had soldered it ...
Oonah's user avatar
  • 1
1 vote
4 answers
2k views

Using KiCad, is there a way to have a pad with an slot shape (referred to in KiCad as "oval") be exported properly as a drill (.drl) file? The pad in KiCad looks like Fig. 1 below. But after ...
plu's user avatar
  • 743
1 vote
1 answer
565 views

have been trying to replace a capicitor on this inherited pcb. Sadly the negative pad for C6 (Orange circle) seems to be missing. Can anyone advise how best to get a capitor seated here? Thanks. PS ...
Adam's user avatar
  • 11
0 votes
0 answers
157 views

I am designing a board on KiCAD and I am facing an unfamiliar issue. Most of the pad connection is done successfully but a few pads can't be connected. While I am starting a new track between pads, ...
emre iris's user avatar
  • 127
0 votes
2 answers
472 views

All is in the title. I've been using this "guide" to calculate PTH pad diameters. I'd like to comply at least with Level A of IPC-2221. Apparently it just means that the pad has to be 0.7 mm (275 ...
CAPLDev's user avatar
  • 123
2 votes
0 answers
3k views

I have a top only pad in a footprint. I don't need any open window on the the top solder layer so I set the tented option enable for my pad... But even if the top solder is off (no window for this ...
Dony's user avatar
  • 16
0 votes
1 answer
494 views

Introduction to the problem I use an op amp to buffer the output of an in amp and to drive the input of an ADC, so the signal path looks basically like this: in amp -> op amp -> ADC The device ...
FAust's user avatar
  • 3
6 votes
3 answers
3k views

In a desoldering incident, my beautiful board ended up like this: Other side: The guy doing the desoldering says there is no chance this board is usable since he claims he ripped through the ...
Kaizer Sozay's user avatar
  • 223
0 votes
1 answer
975 views

I am doing a PCB layout with a Atmel/Microchip MCU ATSAML21E18B-MUT‎ which has QFN-32 package 5x5 mm. This board can have a maximum of 20x40 mm and I am having problems with space because the circuit ...
abomin3v3l's user avatar
  • 677
1 vote
2 answers
250 views

I have a 2-layer PCB, where I'd like to connect the top and bottom layers of two pads with a trace. However, when I try to connect one layer, the other layer simply disappears, as shown below, where I'...
plu's user avatar
  • 743
1 vote
1 answer
89 views

I'm drawing my own CAD library for the ATXMEGA*-E5 devices. At page 69 (Seztion 35.2 32Z) there is the drawing of the package 32Z (5x5mm 32-lead VQFN). I cannot find any information about the ...
Mark's user avatar
  • 1,593
0 votes
1 answer
119 views

I'm doing 2 repairs and currently the pads are missing. I have jumper wire and I try to solder it on with flux but the tinned copper wire doesn't stick too the surface. I've been trying for 4 days now ...
Kushimaru's user avatar
  • 21
0 votes
1 answer
776 views

Are pads from the EAGLE "testpad"-library printed or separately bought and mounted? E.g. "testpad / PTR1" TEST PIN Footprint: B1,27 (Version 1) TEST PAD 3D Package: B1,27 (Version ...
Galaxy Stuff's user avatar
  • 9
3 votes
1 answer
255 views

As we are a materials company the expertise is not in EE, so I am asking a very simple question. I tried to search online for this, but could not find an answer. We are making transistors with our ...
GoalTorrent's user avatar
  • 33
0 votes
1 answer
852 views

Hello fellow engineers. I am trying to make an electrical connection with some gold plating. The gold plating is shaped like a rectangle, with dimensions of 3mm x 1.5mm x 0.1μm thick. Here is what ...
Intrastellar Explorer's user avatar
  • 727
0 votes
2 answers
83 views

I'm trying to connect A4 to pin 5 in 6050 in the picture. When I click those with the net tool, it also connects A2, which is not what I need. If I use the delete tool and erase the junction, they ...
fran35's user avatar
  • 3
3 votes
0 answers
342 views

I have not done a lot of work with SMD LEDs and have a question about the pad layout. I have done quite a bit of research and haven't found much helpful info yet. I am working with 7030 SMD LEDs ...
Steve Van Pelt's user avatar
  • 31
16 votes
3 answers
37k views

I am working on a PCB for which I need external soldered wires. I made the whole PCB with al the traces on the front layer. Then, with 3 vias, I got to the back layer. Here I need to solder 3 wires to ...
jan's user avatar
  • 163
4 votes
2 answers
457 views

In the article Compact sub nano second pulse generator using avalanche transistors, I read P. 874 Further, we used pads on a doublesided 0.062” FR-4 epoxy glass laminate pc-board for capacitors C6-C8 ...
MikeTeX's user avatar
  • 1,968
1 vote
1 answer
287 views

I'm planning to use an MCP4011-xxx/MC (DFN version). This package has an exposed PAD. But nowhere in the datasheet, I can find the information if this exposed PAD should remain NC or tied to GND/VSS. ...
KarlKarlsom's user avatar
  • 2,032
0 votes
2 answers
384 views

I'm designing a board around 2 Texas Instruments TPS65988. In the datasheet a layout example is shown where "fins" are placed around pads to provide further thermal dissipation. A pour to create this ...
SashaLag's user avatar
  • 3
15 votes
4 answers
13k views

I'm curious why PCBs have one square pad in row for 0.1" headers. What is purpose of putting one square pad? What it indicates? Can you push more amps through square pad than round?
Pararera's user avatar
  • 471
0 votes
1 answer
327 views

Is it possible to convert shapes from DXF file to pads in Eagle? Is it possible to convert circles to Eagle pads? I have just arranged and positioned things using Fusion360 and now I want to convert ...
felixd's user avatar
  • 33
5 votes
1 answer
719 views

It is better to avoid acute angle to join two routes (depending on current direction and waveform). I often see on board acute angle with a pad or a via. Is it bad? Should it be avoided as well?
M.Ferru's user avatar
  • 4,016
0 votes
1 answer
129 views

I have downloaded and studied the layout that TI provides for the TMDSEVM437X AM437x Evaluation Module. After calculating some distances, I concluded that the pad size used for the ZDN footprint is 0....
Konstantinos Tsoumanis's user avatar
  • 41
0 votes
1 answer
406 views

While trying to fix a laptop, I was de-soldering a TPS51125. I added a bit too much solder to the power pad while wicking so I had the "smart" idea to use a solder pump to remove it... but the pad ...
Daniel's user avatar
  • 3
1 vote
1 answer
177 views

I cant fid how to configure the GND polygon to connect to smaller IC pads: EDIT Following the @Dave Tweed answer the result is exactly as I need:
0___________'s user avatar
  • 2,712
3 votes
3 answers
6k views

I'm trying to create a footprint for the ACS770 current sensor in Altium Designer (17.1), which has a quite irregular shaped pad: ('round' pad shape with slot hole, and then a small cutoff in the ...
Arjo van der Ham's user avatar
  • 156
0 votes
1 answer
132 views

I'm quite new to Eagle and currently ran into a problem with the multi-sized capacitor package in Eagle. The board layout is shown below. As you can see pin 2 and pin 3 should in theory be connected, ...
attle's user avatar
  • 35
2 votes
1 answer
4k views

I'm using KiCAD version 5, and I have an issue with it. Previously, I've been using OrCAD up until the point to where I needed multiple layers for my board. So, I redesigned my components, but I'm ...
BestQualityVacuum's user avatar
  • 506
0 votes
1 answer
966 views

I have read a lot of articles on epoxy and glues for PCB especially with a ripped off pad. I am in the same situation myself and was hoping to get some suggestions here. . The MEMS microphone looks as ...
RAN's user avatar
  • 329
1 vote
2 answers
1k views

One of the keys on my Rigol DS1054Z oscilloscope wasn’t working. I opened up the scope and this is what I found. Is that K5 pad corroded? Other than sanding it is there any other way to restore ...
electrophile's user avatar
  • 1,360
1 vote
2 answers
556 views

I am making a PCB with a component that is of the package SO-8FL. The component is n-channel MOSFET NVMFS4C03N by ON Semiconductor and the datasheet is here. I started to make the package in Eagle, ...
Blake's user avatar
  • 13
0 votes
1 answer
389 views

I lifted and tore away a pad when soldering a capacitor on a PCB. The pad on the negative side is fine. Can I solder the capacitor lead onto the negative pad, and the other lead on the exposed trace ...
Eddy Bee's user avatar
  • 1
26 votes
6 answers
7k views

Will I have any trouble routing the traces in this way? (VCC and GND) Is it OK considering that the entire circuit current is under 50mA?
Lucas Alexandre's user avatar
  • 676

1
2
3 4