New SMT Equipment: what causes cloudy solder mask (1)

High Speed Panasonic Screen Printer Sp70

High Speed Panasonic Screen Printer Sp70

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SFG Electronic Technology Co.,Limited Contact:Andy Tung Cell phone/WhatsApp/Wechat:+86 13751093139 Skype:kelvin-andy Higher quality & higher productivity . . Further pursuing of high quality printing with "the cornerstone of quality is p

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Electronics Forum: what causes cloudy solder mask (170)

Black stain... what causes it?

Electronics Forum | Thu Feb 14 17:40:34 EST 2013 | jorge_quijano

PCB Supplier made an EDX anaysis, the found a chemical trapped in the holes, and some burnt burrs, according to what they say this stains are over the solder mask & silk, so they do not affect functionality.

solder balls - Possible root causes

Electronics Forum | Fri Jul 06 03:23:01 EDT 2001 | kennyhktan

Hi there Steven ! Please allow me to share some of my problem we're facing here with you. Here are a few points that I suggest you should check on your current process:- (1)PCB - Component land partern design ? It is per IPC spec ? - Mask

Industry News: what causes cloudy solder mask (7)

Dendrite Failure – Causes & Cures Webinar

Industry News | 2018-03-24 09:45:36.0

Dendrite failure on printed circuit board assemblies is quite common but often not investigated fully to pin point the root cause. This is due to the intermittent nature of the failure or just replacing components seems to solve the problem Book at https://www.bobwillis.co.uk/event/dendrite-failure-causes-cures/

ASKbobwillis.com

How to Prevent Solder Bridging in 3528 PLCC6 RGB LEDs?

Industry News | 2018-10-18 08:34:52.0

How to Prevent Solder Bridging in 3528 PLCC6 RGB LEDs?

Flason Electronic Co.,limited

Technical Library: what causes cloudy solder mask (68)

Reflow Soldering Processes and Troubleshooting: SMT, BGA, CSP and Flip Chip Technologies

Technical Library | 2021-01-03 19:24:52.0

Reflow soldering is the primary method for interconnecting surface mount technology (SMT) applications. Successful implementation of this process depends on whether a low defect rate can be achieved. In general, defects often can be attributed to causes rooted in all three aspects, including materials, processes, and designs. Troubleshooting of reflow soldering requires identification and elimination of root causes. Where correcting these causes may be beyond the reach of manufacturers, further optimizing the other relevant factors becomes the next best option in order to minimize the defect rate.

SMTnet

Thermal Residue Fingerprinting: A Revolutionary Approach to Develop a Selective Cleaning Solution

Technical Library | 2009-07-01 09:24:25.0

During the last 5 years, the processes to remove flux residues especially for lead-free and challenging geometries have demonstrated new cleaning obstacles which have to be overcome.i A new methodology has been recently developed to further increase the propensity for successful cleaning.ii At the core of this method is the thermal identification of the residue matrix. Thermal energy changes the physical state, i.e. transitions between liquid, solid and gas phases. By taking advantage of such specific information during phase transitions, the cleaning process can be tailored to such settings, which in turn increases the cleaning success significantly.

ZESTRON Americas

Events Calendar: what causes cloudy solder mask (1)

Selective Soldering Design & Process Setup Webinar

Events Calendar | Mon Mar 09 12:00:00 EDT 2015 - Mon Mar 09 12:00:00 EDT 2015 | ,

Selective Soldering Design & Process Setup Webinar

ASKbobwillis.com

Express Newsletter: what causes cloudy solder mask (985)

New BGA Solder Mask Repair Technique Using Laser Cut Stencils

New BGA Solder Mask Repair Technique Using Laser Cut Stencils If you don't see the images, please visit online version at #Application.SmtNet.baseURL#/express/ New BGA Solder Mask Repair Technique Using Laser Cut Stencils Best, Inc

Partner Websites: what causes cloudy solder mask (23)

Auto SMT Solder Paste Screen Printer-PCB magazine loader,PCB turn conveyor,pcb conformal coating mac

ASCEN Technology | https://www.ascen.ltd/Products/Solder_paste_printer/394.html

Auto SMT Solder Paste Screen Printer-PCB magazine loader,PCB turn conveyor,pcb conformal coating machine,PCB router,PCB depaneling machine,3 ply mask making machine,cup mask making machine Welcome to visit ASCEN Cart

ASCEN Technology

0402 Min Size Land Pattern - PCB Libraries Forum - Page 2

PCB Libraries, Inc. | https://www.pcblibraries.com/forum/0402-min-size-land-pattern_topic30_post57.html

“Nominal” environment for library construction, use the “Least” environment for the 0402 (1005) land pattern.   Too much solder on this micro-miniature 2-pin component causes tombstoning in the assembly reflow oven

PCB Libraries, Inc.


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