Industry Directory | Manufacturer
The exclusive supplier of SIPAD Solid Solder Deposit in North America and the only SIPAD Solid Solder Deposit (SSD) coating service bureau in the world.
New Equipment | Rework & Repair Services
BEST is your source for PCB rework of printed circuit boards. The following services are available to you for performing ECOs on bare printed circuit baords: Pad adds Trace adds Trace cuts Solder mask ablation to rezise pad area Remarking of PCB
New Equipment | Rework & Repair Services
BGA Reballing Services BEST provides BGA reballing services for your plastic-, ceramic- and metalbodied components down to 0.3mm pitch. We have the ability to develop the BGA reballing process you want with a variety of deballing methods and machine
Electronics Forum | Wed Sep 26 12:16:44 EDT 2012 | bwjm
Hi Guys,recently i am facing an issue. Refer to the attached photo. This PCB is high RF speed, gold immersion single layer. After reflow, my solder seems to have black stains on it. I tried with SAC305 paste water soluble and no-clean, both results a
Electronics Forum | Thu Feb 12 12:30:16 EST 2015 | stevezeva
I remembered something from the TechNet a long time ago about heating the board with a heat gun to see if the white spots disappear. I searched the archives and found this from Bill Kenyon: Quick identification of solder mask white spots- if it is t
Used SMT Equipment | Adhesive Dispensers
Camelot 1818 Glue Dispenser $3,700.00 1993 vintage -Primo Condition! Refurbished by Speedline in 2000 and only used it a few times after that! Solder Paste Syringe Downward Looking Fiducial Camera-Manual Adjust Tactile Sensor- Probe for measurin
Industry News | 2018-10-18 08:34:52.0
How to Prevent Solder Bridging in 3528 PLCC6 RGB LEDs?
Industry News | 2018-10-18 10:24:59.0
Printed Circuit Board Solder resist
Technical Library | 2019-05-29 01:47:22.0
1.Vias near SMD pads: Solder can flow into the via after melted. As a result cold joint will appear in the end. Check the picture below. 2.Vias on SMD pads: Solder can flow into the via more easier after melted. Check the picture below. 3.Via opening without soldermask covered. When workers solder TH parts by hand, soldering iron can touch vias sometime, then tiny amounts molten solder will stay on vias. This can lead to electrical short easily. We recommend you make all vias tenting (covered by solder mask) if it is possible.
PCBNPI-Professional PCB Fab/PCB Assembly Service Provider From China
Technical Library | 2019-09-19 00:28:48.0
The symbiotic relationship between solder masks and selective finishes is not new. The soldermask application is one of the key considerations to ensure a successful application of a selective finish. The selective finish is the final chemical step of the PCB manufacturing process, this is when the panels are at their most valuable and are unfortunately not re-workable. Imperfections are not tolerated, even if they are wholly cosmetic. Quality issues often manifest themselves in the form of a 'ping pong' conversation between the fabricators, the soldermask suppliers and the selective finish suppliers. Without tangible evidence these discussions are difficult to resolve and the selective finish process is usually regarded as responsible. This paper will focus on the chemical characteristics and use them to predict or identify potential issues before they occur rather than specifically name 'critical' soldermasks. It is also the intention of this paper to address the potential of a soldermask to react to common yield hiking practices like UV bumping and oven curing. It is hoped that this awareness will help fabricators to ensure maximum yields by asking the right questions. 'Critical’ soldermasks impact all selective finishes. In this paper, practical experience using immersion tin will be used to highlight the relationship between 'critical' soldermasks and some of the issues seen in the field. The paper will include a novel approach to identify re-deposited volatiles after the reflow.
SMT SEMI AUTO SCREEN PRINTER FOR PCB SIZE 1200 IN SMT LED PRODUCTION LINE Product introduction: 1.Using precision guide rail and the import motor to drive the blade seat conversion, printing, and high accuracy. 2.Printing scraper can rotate 45
https://www.ascen.ltd/Products/Solder_paste_printer/513.html full auto PCB screen printer and SMT solder paste printing machine with Image and optical system,It is a very accurate fully automatic SMT stencil printer.automatic PCB screen printer main
Training Courses | | | PCB Assembly Courses
The PCB assembly courses provide knowledge of different processes and equipment used in TH and SMT assembly of printed circuit boards.
Events Calendar | Mon Apr 12 00:00:00 EDT 2021 - Mon Apr 12 00:00:00 EDT 2021 | ,
Europe Chapter Webinar: Tombstoning Components during Reflow Soldering - Causes & Cures
Events Calendar | Wed Jul 13 00:00:00 EDT 2022 - Wed Jul 13 00:00:00 EDT 2022 | Oshkosh, Wisconsin USA
Wisconsin Chapter: PCB Workshop and PCB Plant Tour
Effects of reflow profile and thermal conditioning on intermetallic compound thickness for SnAgCu soldered joints. Effects of reflow profile and thermal conditioning on intermetallic compound thickness for SnAgCu soldered joints. The purpose
Heller Industries Inc. | https://hellerindustries.com/solder-balls-defects/
(overlapping solder mask) Misaligned solder mask (overlapping solder pad and print area) Flux is too weak for the oxidation level of the board and/or components Components have marginal solderability
ASCEN Technology | https://www.ascen.ltd/face_mask_making_machine/696.html
manual list PCB Depaneling Operate Manual Face mask making machine Mask making machine manual PCB magazine loader PCB conveyor PCB magazine unloader Axial component lead former PCB solder paste printer
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