Category:PCB PCB Pad

Group Administrators: 0 | Group Member: 21 | Group Threads: 20

Pad cratering is a mechanically induced fracture in the resin between copper foil and outermost layer of fiberglass of a printed circuit board (PCB). It may be within the resin or at the resin to fiberglass interface. Do you have ever problems about pcb pads? please talk here.

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Search Results: 20 Threads,2 Pages
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PCB pads introduction

Pad is the basic constituent elements of the surface mount assembly used to form the land pattern of the circuit board, that is, various combinations of pads designed for special component types. Ther... (See More)

Sergio Vasconcelos
2017-05-22 16:56:42
1 answers
197 views

Wire to SMT pads

Hi All, Has anyone seen or used equipment that is capable of automating the process of attaching hookup wire directly to a large SMT pad? Soldering, ultrasonic? I'm looking to see if... (See More)

tony
2017-05-06 11:43:23
ALuKa
2017-05-06 11:46:07
1 answers
207 views

IPC for pad spacing reduction

Does the conductor spacing requirement in IPC-600G apply to pads? Does it include the nickel/gold finish or only the underlying copper? (See More)

Brian
2017-05-02 10:14:39
Clifford
2017-05-02 10:15:55
4 answers
195 views

ENIG-BLACK PAD

It is very common to relate ENIG pad surface finishing with BLACK PAD defect. However, is anyone know why BLACK PAD defect only happen on fine pitch pad areas such as BGA, QFP? Why this defect did not... (See More)

Daniel
2017-02-27 22:40:55
Kermit
2017-03-01 22:40:55
5 answers
174 views

Bare Copper Pad Reflow Soldering

I received a request from customer to assemble ceramic substrate (alumina oxide)that printed with a low temperature Copper thick film conductor (the overglaze layer is polymer). The Copper pads are ex... (See More)

tom
2017-02-27 07:06:38
Thomas Lithen
2017-03-01 07:06:38
5 answers
220 views

PCB Pad lifted - repair

Hi All, I am producing a lot of high cost PCBA where the PCB material is the `ROGER' material. Due to some of the high components and handling we get pad lifted issues sometimes and as of now ar... (See More)

xilinliu
2017-02-27 04:14:49
Francisco Marquez
2017-03-01 04:14:49
4 answers
246 views

Micro Vias in Pads

Anyone have an idea how small a via must be to inhibit significant solder volume escaping into the via? (See More)

cec021
2017-02-26 08:18:46
henrik.svensk
2017-02-28 08:18:46
1 answers
620 views

The Discussion of the New PADS Family

Mentor Graphics just announced three new PADS family products for PCB design that, according to the company, start at unprecedented pricing for the independent hardware engineer, delivering affordable... (See More)

Gabe
2017-02-08 23:32:22
Khairul Mustaqim
2017-02-10 23:32:22
1 answers
763 views

PADS and PCB Design

PADS is a PCB design package developed by Mentor Graphics. It comes in three trim levels (Standard, Standard Plus and Professional), and is considered as a high end commercial grade software package. ... (See More)

Brook
2017-02-07 01:25:06
John Inlow
2017-02-09 01:25:06
4 answers
95 views

Gold Pads Soldering problem

Not all but some new boards we have had solder joint problems, for example some of the pads refuse to solder at all and the solder paste ends up attached only to the leg, reworking makes no difference... (See More)

n0xas
2017-02-02 22:11:19
tony165
2017-02-04 22:11:19
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