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
4 votes
3 answers
436 views

I am planning to use one of the CAA573 "Megacap" capacitors from TDK, the CAA573X7S2A476M640LH. According to the datasheet, the following land pattern is recommended: Length(L) 6.00mm ±0....
EENovice's user avatar
  • 219
1 vote
0 answers
67 views

I need to create a mounting hole in the board where a certain degree of rotation is required. Since this is a non-standard mounting hole, I decided to make it using a board cutout to at least define ...
Kolyan Korolev's user avatar
  • 11
0 votes
0 answers
73 views

Recently I want to draw the pad of the blue line that I circled, but I don't know the width and height of the pad I'm drawing. Besides, I was wondering about 2 x 2.28 4 x 1 etc. Does it mean something?...
tony0099757's user avatar
  • 11
4 votes
3 answers
566 views

In general, microcontrollers typically include clamping diodes for their I/O pins. However, in the event that these I/O pins are damaged, will the functionality of the respective pin (whether ...
Potionless's user avatar
  • 1,827
0 votes
1 answer
92 views

The SOT-223 has an exposed tab pin and this will be connected to the the OUT pin. In the table below, it shows the thermal resistances for different copper areas. My question then is, to achieve the ...
Matcha's user avatar
  • 17
0 votes
0 answers
150 views

In all my footprints I'm using rounded corners for rectangular pads. I'm using 50% corner radius for small pads and flat 0.25mm corner radius for larger pads, where 50% would result in a corner radius ...
prok_8's user avatar
  • 109
0 votes
0 answers
89 views

I would like to create a footprint looks like this, with cutout inside the copper, imported from a DXF file. I tried different method (like this one Defining a circular cutout in a pad in Altium) and ...
JGC's user avatar
  • 11
0 votes
0 answers
56 views

Assume that you have a via hole inside a pad. Which method can be used to properly fill a via-in-pad by hand so it will be equal or similar as the protection of vias according to IPC 4761? Which ...
euraad's user avatar
  • 1,466
0 votes
0 answers
42 views

can anyone give help on creating pads for Flexypins in Eagle? The hard part is the plated-through oval racetrack slot. I get the idea that it would be OK to simply drop an SMD rectangle on top and ...
Larry Pearlstein's user avatar
  • 1
1 vote
1 answer
344 views

I found this thermal pad on a controller board for SATA to USB enclosure. It's stuck on the SATA to USB bridge ICs. You can see 2 ICs to the left of it. There was an identical thermal pad adhered ...
Nicolay Doytchev's user avatar
  • 145
0 votes
1 answer
231 views

I have run into an odd problem with KiCad, whereby a row of resistors has its ground pads re-assigned to some random pad. This happened with the central row of resistors first of all, which were ...
Hektor's user avatar
  • 184
1 vote
2 answers
451 views

Retired user here that have not designed a circuit in the last 3 years. So I got myself KiCad 7 and boy oh boy things have changed! Mostly for the better, but some things I used to do are now a real ...
Luc Belanger's user avatar
  • 21
1 vote
3 answers
332 views

If a VQFN package (below) has a thermal pad and thermal vias beneath it, the bottom layer should have an identical pad to act as a heat sink. Is it typical to surface mount a heatsink on the bottom-...
kando's user avatar
  • 457
0 votes
1 answer
97 views

Question For a passively-cooled portable device (fanless, ambient cooling), what are typical methods to supplement the thermal pad of an IC to mitigate device temperature rise, (beyond efficient ...
kando's user avatar
  • 457
1 vote
1 answer
111 views

I am replicating one of our recommended designs for a POE application. Here I have an EP13 forward transformer FCT1-50M22SL as recommended in the BOM. The pins do not match the provided image of the ...
Wes Ellgass's user avatar
  • 363
0 votes
2 answers
68 views

I am designing a pcb with minimal room approximately 5.5mm wide, the power supply comes from one end of the board. The top layer has pad connections that take up most of the width of the board leaving ...
J_KILEY76's user avatar
  • 1
0 votes
1 answer
135 views

I an currently trying to reconstruct a PCB in Altium from the Gerber files. So far, I have been able to import the Gerbers in a PCB document. The existing Gerbers have through-hole pads that have a ...
ESD's user avatar
  • 551
1 vote
1 answer
157 views

I have settled on this component for our spin dials: https://www.digikey.com/en/products/detail/cts-electrocomponents/292V1X24A/12091626 Problem is, in fusion pcb my pads nearly touch, while the holes ...
Wes Ellgass's user avatar
  • 363
0 votes
2 answers
73 views

How can you even make a footprint/ land pattern with this info. Is that land pattern the pads? Is that a wire going into the model, meaning my pad just needs to touch either side of the component? ...
Wes Ellgass's user avatar
  • 363
4 votes
3 answers
2k views

Two questions on beginner PCB design: For integrated chips on PCB design, can you draw routes from the side of the contact pad, or is it standard practice to go head-on straight to the pad entry? For ...
starboy's user avatar
  • 111
6 votes
5 answers
1k views

I am designing a board for a 0.8 mm pitch large BGA component. I will be using via-in-pad. There are some differential pairs that need to escape the pin field. The smallest my board house can do (...
jvtnv's user avatar
  • 107
16 votes
5 answers
4k views

We would like to make a normally-open solder jumper between two 50x50mil unmasked square pads. I've seen this kind of thing by others and would like to replicate it in our layout. We tried a simple ...
KJ7LNW's user avatar
  • 2,268
1 vote
2 answers
188 views

I have a dual analog output PCBA that I am routing. The analog output component selected is two TI DAC7750IRHAR DACs. These DACs are controlled via SPI lines. I had originally intended to place both ...
rothloup's user avatar
  • 438
0 votes
1 answer
79 views

How to properly place thermal vias under components? I hook them up to the ground net, the same as the ground pad of my QFN component, but they don't seem to connect. Do I need to edit the footprint ...
thegamebusterpl's user avatar
  • 500
4 votes
1 answer
349 views

So the original footprint is first, followed is the edited footprint to allow for inner pads to be accessed. As you will notice the extended pad footprint is smaller than the pad. Will this cause ...
Tony's user avatar
  • 187
5 votes
1 answer
175 views

I am creating a footprint for a TI TXS0108ERGYR level shifter and encountered these circles drawn in the exposed pad for its land pattern: Are these meant to be non-metallized and if so, for what ...
JYelton's user avatar
  • 35.9k
1 vote
1 answer
278 views

I need to pack a cluster of 0603 LEDs (https://docs.rs-online.com/c349/0900766b81180479.pdf) as close together as possible on a PCB. The datasheet recommends a pad-to-pad width of 2.3mm. As the board ...
19172281's user avatar
  • 773
2 votes
2 answers
872 views

I am new to PCB design, I wonder if there are any bad effects by routing it through the corner of a pad. (Top right) Any input is appreciated.
Terry's user avatar
  • 45
4 votes
5 answers
3k views

I'm using this device - ATSAMD21G17A While I measured the connection between the exposed pad and ground, they seem to be unconnected. When I went and check on section 10, problem 20, on page 30 of ...
user avatar
4 votes
2 answers
757 views

I have a PCB that has two rectangular pads on either side of the PCB, exactly opposite to each other. They need to be temporarily shorted (connected) to allow setting of some parameter through ...
Sharan V K's user avatar
  • 41
1 vote
1 answer
675 views

I am preparing a circuit using a TP4056. This circuit has a thermal pad. The datasheet says that this pad must be connected to ground or nothing. However, some forum discussions talk about connecting ...
hervema's user avatar
  • 31
1 vote
1 answer
66 views

I want to make a PCB for the pins of this unit: So the pins at the bottom of the unit will be soldered to a custom PCB. In the bottom it is shown that the pin diameter is 0.5mm. When making PCB pads ...
cm64's user avatar
  • 2,714
0 votes
1 answer
4k views

I don't have a lot of experience with soldering, but I can manage small repairs and I regularly watch TronicsFix's repairing videos (like this one for the same issue I have). Quite lucky, right?! So ...
NutuS's user avatar
  • 3
0 votes
2 answers
831 views

I've seen several similar topics where people have torn off PCB pads, but in my case, I managed to tear off a pad from an SMD component (a sealed pressure sensor). It was one of the communication (I2C)...
Justin8051's user avatar
  • 193
2 votes
3 answers
1k views

I am creating a footprint for a 24-pin QFN package with exposed thermal pad. Sometimes manufacturers will provide solder paste mask guidelines in addition to metallization for the landing pattern, but ...
JYelton's user avatar
  • 35.9k
3 votes
1 answer
469 views

When we are dealing with multilayer PCBs, are the component pads (through-hole) present on all layers, or just on the top and bottom layers?
Jonathan_the_seagull's user avatar
  • 729
2 votes
1 answer
333 views

I am evaluating the IPC-compliant footprint wizard in Altium Designer. One of the steps is to determine the pad size relative to the nominal ball diameter: Related to this topic, an answer provides a ...
JYelton's user avatar
  • 35.9k
10 votes
4 answers
2k views

I have a question about routing style of pads with the same functionality belonging to one chip. I draw a picture in Paint (fictional IC; let it be the SOIC8 footprint). GND is only as example (it can ...
Karlsson's user avatar
  • 123
0 votes
1 answer
179 views

I'm trying to reflow a custom shaped strip onto a PCB, but I'm unsure about what size pad I need on the PCB. The strip is 13mm x 6mm x 0.3mm. The PCB surface finish is ENIG. The pad is likely to be ...
Dan's user avatar
  • 153
6 votes
4 answers
3k views

I am currently designing my first PCB to be manufactured by a fab (I am using JLCPCB). The base material that JLCPCB offers is FR-4 TG130. In that design, I have a few wires that would need to be hand-...
Dakkaron's user avatar
  • 921
1 vote
1 answer
424 views

I am designimg a board with an SMA connector for 8 GHz. The trace is calculated as a coplanar waveguide. For the given stackup, it is 0.25 mm wide. The SMA connector pin is also 0.25 mm wide. If I ...
phenom's user avatar
  • 11
1 vote
0 answers
258 views

I am currently designing a product which uses 0402 passives and other fine-pitch parts. As the PCB-space required is a major design goal I want to reduce the footprints. High production yield is also ...
ElectronicsStudent's user avatar
  • 3,757
2 votes
1 answer
4k views

I am currently running into a problem in KiCad where the ground plane won't connect to some pads. KiCad even tells me to connect them but doesn't seem to make the connection automatically.
Philipp Bleimund's user avatar
  • 101
3 votes
1 answer
102 views

Why is the connection recommended as in the top picture?
İbrahim ATİKER's user avatar
  • 71
0 votes
2 answers
1k views

I have a flash drive that sustained damage to the USB port. It looked like it just needed to be reseated with fresh solder and some TLC so I went ahead and started to remove the damaged port, then one ...
restorehub's user avatar
  • 1
0 votes
2 answers
199 views

I would like to know in what units are these dimensions?
Faizan Cassim's user avatar
  • 3
1 vote
1 answer
137 views

I'm trying to make a simple board that will use an Arduino Nano 33. These boards allow for being either used as an SMT board or with a standard throughhole header. I'd like to make the board where I ...
user2508385's user avatar
  • 139
0 votes
0 answers
87 views

Sometimes I need to add more solder in between a capsule and its land patterns, other times I even need to remove some. It would be much easier if the footprint pads were protruding out from ...
kellogs's user avatar
  • 1,158
2 votes
2 answers
2k views

Recently someone posted a question regarding an inline device to attenuate their voltage on a 50 \$\Omega\$ coax by half (i.e. 6 dB). Because the question asked for commercial recommendations, it was ...
Math Keeps Me Busy's user avatar
  • 34.6k
1 vote
1 answer
118 views

I'm trying to use a ROHM BD9F800MUX (buck PMIC regulator with synchronous regulation.) Upon looking at their footprint guide, it has something I have not seen before and is poorly documented. It ...
MadHatter's user avatar
  • 3,616

1
2 3 4