Electronics Forum: pcb (Page 479 of 936)

omit stencil apertures to hand solder or paste, reflow then solder.

Electronics Forum | Thu Feb 27 02:55:53 EST 2020 | hexton

I want to avoid peoples preferences as they will differ and will not be a deciding factor. A heat gun will introduce risk to surrounding PTH components and having to add protection for those, will limit any gain in productivity. There is no question

Solder pot & wire tinning help

Electronics Forum | Mon Mar 02 13:06:36 EST 2020 | charliedci

If you add any "flux cored" wire solder to the pot make sure you have ventilation as the flux will burn off and smoke like crazy. This solder pot is like any used in a wave or selective solder, no flux. The flux is added to wire prior to di

Electronic Assembly - PCB cleansing and COVID-19

Electronics Forum | Mon Mar 30 11:02:37 EDT 2020 | SMTA-Eric

As we navigate through the CORVID-19 pandemic, many essential manufacturing facilities are still on line and operating. Some at reduced or modified schedules in following the guidelines to help reduce the spread of this virus. My question is in rega

HIP defect in BGA

Electronics Forum | Mon Jun 15 06:21:13 EDT 2020 | ameenullakhan

Hi Team, Main reason for HIP are; 1. Warpage in component or PCB : Verified the part and PCB 1.6 mm thickness no warpage found. 2. Hip was at different locations : center as well as corner : So not because of warpage of component. 3.Solder paste equ

How to make transformer bobbins?

Electronics Forum | Fri Jul 24 08:19:55 EDT 2020 | jordanabshire

I often need to wind a coil for transformers, solenoids, or chokes, & I typically use craft plywood for the ends and a paper tube for the center, cemented with wood glue, or Cyanoacrylate . Then, I usually give it a coat of varnish or epoxy. I am cur

X-Ray inspection machine purchase guide

Electronics Forum | Tue Aug 18 16:16:36 EDT 2020 | charliedci

We have a Glenbrook Jewel Box 70T, purchased about 5 years ago, Think it was around $60K quoted price (we traded in our old Glenbrook for a discount), Software pretty basic, can store images and has some graphics and image processing capability. It h

What method for cleaning a wiped board?

Electronics Forum | Fri May 12 07:41:15 EDT 2023 | tommy_magyar

Although I see the advantages in your method, not sure though how to deal with the following: 1. Your batch is actually only one board (or panel) - this would not work in a low volume manufacturing environment, unless there are other jobs set up on t

BGA Solder Short

Electronics Forum | Mon Aug 07 04:05:43 EDT 2023 | suradi

May I share regarding this issue. Initially, please define the root cause clearly, is it from materials or process. Refer to the picture, if the short location is not randomly meaning there is the process issue. It could be stencil design or paste pr

Min Hole/Pad distance to edge of PCB

Electronics Forum | Mon Mar 13 15:10:52 EST 2000 | Stuart Adams

Assuming agressive design rules what is the minimum distance I can get away with between the board edge and a SMT pad and between the board edge and a plated mounting hole ??? (The board is only 1"x2" and the mounting holes are 80 mil dia, 125 mil

Re: Min Hole/Pad distance to edge of PCB

Electronics Forum | Mon Mar 13 15:35:32 EST 2000 | Ioan

Stu, it is good you know that there are limitations and you want everything. Wish our designers work like that. So, the limitations we impose are dictated by the rails of the insertion and dispensing machines. Normally a .150" keepout will make a s


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