Questions tagged [pad]

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29 views

How could I give pad to this antenna section?

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....
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3answers
78 views

How do I jump from trace here?

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 ...
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1answer
49 views

Linear regulator with tab at ground

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 ...
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0answers
57 views

How to repair a solder pad that came off a ribbon cable?

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 ribbon cable after I had soldered it ...
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4answers
159 views

KiCad how to export oval PCB hole as a drill file?

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 ...
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1answer
65 views

Damaged PCB - solder pad missing

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 ...
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2answers
61 views

PCB Pad sizes: Is it worth going over Level A of IPC-2221?

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 ...
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0answers
618 views

Best way to remove paste in pad footprint in Altium

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 ...
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2answers
63 views

Allowing redundant tracks in EagleCAD

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'...
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1answer
43 views

xmega-E5: exposed pad

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 ...
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1answer
95 views

How to make an electrical connection to thin gold plating?

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 ...
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2answers
48 views

connect pad inside component symbol

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 ...
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0answers
146 views

7030 SMD LED pad configuration

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 ...
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2answers
425 views

Question relative to pads for capacitors - high frequency

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 ...
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1answer
60 views

MCP4011 - Exposed pad - connect to GND?

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. ...
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1answer
97 views

Altium Designer: polygon pour on signal layer

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 ...
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1answer
457 views

Acute angle on a pad or a via

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?
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1answer
51 views

AM437x ZDN (N491 BGA) Footprint Dimensions

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....
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1answer
217 views

PCB Power Pad destroyed for TPS51125. Fixable?

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 ...
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1answer
108 views

EAGLE - how to make ground planes to connect to the smaller PADS

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:
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1answer
193 views

Can I solder a capacitor on a lifted trace

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 ...
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6answers
5k views

Is it OK to route a trace through a pad?

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?
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1answer
401 views

Help in Thermal PAD and glue calculation (equivalence) in shared heatsink

Hello if I have 15 chips to dissipate 1W each (thus 15W in total), by math calculation, which of the next three possibilities is better: 1) using a unique shared heatsink @1.7K/W with 0.5mm thermal ...
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3answers
896 views

Impact of increased pad length in PCB

I was wondering why I cannot edit footprint of LED 1206 to take care of LED 0805 as well so that I can mount one of them depending on the availability. To do this, I have to increase the pad size of ...
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1answer
194 views

connecting SMD pads

I recently designed and ordered my first batch of PCB's (first ive ever created) They were great except for one thing; I thought that setting my SMD pads layer to 'All' in the software would create a ...
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3answers
457 views

How do I secure the connection to this battery (CR1616)?

I'm replacing the batter in a Game Boy Advance game cartridge. (Don't mind the bad solder job; the iron isn't handling well.) I've gotten it to work, but the battery is held down with very little ...
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3answers
1k views

Altium high current trace

I'm designing a PCB in Altium and I need to trace tracks that can support 20A. I used a PCB Track Width Calculator and I need a width of 10mm for my tracks. The problem is, how do you link the pads of ...
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0answers
106 views

Ground under PCB pads for wire dipole?

I have a wire dipole antenna that I am connecting to a PCB. I know that ground should be cleared under most antennas. However, in my case the wire will be mounted away from the PCB. Do I need to ...
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1answer
163 views

Characteristic impedance of RF PCB when narrowing the trace width to fit pad

I am working on a PCB design that should be matched at a characteristic impedance of 50 Ohms. The circuit down converts a 2.4 GHz signal to a signal in the 2 Mhz- 100 Mhz range using a VCO and a mixer....
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2answers
767 views

Solder trap pads

I would like to know what is the name of those special pads designed to catch excessive solder and where can I find more information on them.
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2answers
176 views

Altium: Traces under Pads/Vias

New to Altium here, so my apologies in advances if some of my terms are off. Anyways, I'm looking for a setting that enables traces to be highlighted when clicking on a pad or via. This is the ...
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2answers
255 views

Center trace between two pads

Is there a way in eagle to center a trace between two pads? and by center, I mean directly center it with even spacing on both sides of it. I'm asking because its easier to solder pads that aren't ...
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3answers
429 views

Confusing PAD layout in datasheet

I am planning to use a Right Angle RGB LED EASV3015RGBA0 and here is the package dimension and recommended soldering pad: Top matches with LED image(see the anode mark). Bottom is consistent with top....
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1answer
4k views

Eagle 'optional' solder pads

I'm currently designing a PCB with inter-board interconnects - I figure that right-angle 0.1" headers will be sufficient. I'll be "mass producing" the boards (only a couple of dozen...) so I need them ...
4
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1answer
6k views

How do I edit thermals on pads in Eagle?

I have a ground plane and would like to increase the number of gaps in the thermals of a ground pad. I have more than 9 amps running through this ground pad and need to increase contact. It looks ...
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2answers
3k views

Eagle CAD: One-sided thru-hole pad?

Using Eagle 7.6. I have a part in a TO-5 can. The can needs to mount flush to the PCB, and I'm concerned that the copper on the top side of the standard thru-hole pads might contact the case. For ...
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2answers
904 views

Eagle has different shape for pads for through hole components why?

While I understand that have 2 distinct shapes helps in determining which is pin 1, why does eagle have so many shapes: square, round, octagon, long, offset. Which is recommended under what ...
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2answers
4k views

Altium : vias under pad for power drawing and thermal dissipation

On my design, a TO228 mosfet will conduct much power. Under it, I put two Fills (one on top and one on bottom layer). I plan to link them with vias in order to conduct better power and to user the ...
2
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1answer
414 views

Line Level to Mic Pad Working Randomly With Phones

I'm trying to build my own headphones to mic pad. I want to connect the input of the pad to a phone's headphones conector and the output of the pad to a second phone's mic connector. Both phones ...
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1answer
6k views

Through-hole footprints: pad size from technical drawings

I'm creating some footprints for through-hole components in KiCad, and I've got some issues determining the correct pad dimensions from manufacturer's technical drawings. As an example, here's the ...
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2answers
388 views

Pad connection in Eagle

I am a newbie in Eagle and I'm making a RF layout using GCPW. In the figure below, the pad and the track are in contact. However, the connection still unrouted, why? It became routed only when the ...
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2answers
667 views

Pad and soldermask dimensions in PCB design

I found that usually on BGA package and on a lot of QFN datasheets are provided IC and PAD-IC dimensions and not advised PCB-PAD dimensions and soldermask dimensions. Can someone tell me a good rule ...
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1answer
1k views

What use do these round pads have on PCB?

I always find these pads on boards: What use do they have? Is there a specific connector for them or do you need to solder a wire on them?
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3answers
437 views

Altium: Surface Mount Test Pad Passing Through PCB

I'm working on a PCB in Altium that will sit inside an assembly above another board. The board on the bottom has a test pad, but once everything is assembled it will be inaccessible. Therefore, I am ...