Industry Directory | Consultant / Service Provider / Manufacturer
Creative Hi-Tech is an ISO 9001:2008 registered and IPC-A-610-D compliant company providing high quality circuit board assemblies for varied industrial applications.
New Equipment | Rework & Repair Equipment
The BEST Gold Contact Replating Kit includes the tools you need for fast replating and modification of circuit contacts. Edge contacts may require replating if they are contaminated with solder or become scratched during handling or do not meet the m
Bonding chip and Silicone dispensing on the PCB board
Electronics Forum | Wed Jun 24 04:18:52 EDT 2009 | satishk
We are doing SGA actibity, request please to let us know "the probables for PCB / PCBA scratches" especially in contract manufacutrers.
Electronics Forum | Sat Jun 27 08:21:13 EDT 2009 | davef
We assume you're talking about scratches of the solder mask. One possible cause is: poor handling by stacking several boards on top of another and then moving them around, most often when carrying the stack of boards from one work station to another.
Used SMT Equipment | AOI / Automated Optical Inspection
2011 MIRTEC MV-3L PCB AOI MACHINE IS IN GOOD WORKING CONDITION AND CAN BE DEMO'D IN PERSON OR VIRTUALLY! SN: 13110930-0839 DOM: 30 SEP 2011 2D Inspection Power: 85-264V / 4.4A / 50-60 Hz INSPECTION AREA: 450 x 400 mm INSPECTION ITEMS:&n
Used SMT Equipment | AOI / Automated Optical Inspection
Mirtec MV-3L PCB AOI MACHINE IS IN GOOD WORKING CONDITION AND CAN BE DEMO'D IN PERSON OR VIRTUALLY! SN: 13100524-0524 DOM: 24 MAY 20102D InspectionPower: 85-264V / 4.4A / 50-60 HzINSPECTION AREA: 450 x 400 mmINSPECTION ITEMS: Lifted Lead, Lifted Comp
Industry News | 2011-01-12 17:48:44.0
GPD Global will highlight its Positive Cavity Displacement (PCD) Dispensing in Booth #6111 at the upcoming Automation and Technology West Expo (ATX), scheduled to take place February 8-10, 2011 at the Anaheim Convention Center in Anaheim, CA.
Industry News | 2011-11-20 13:36:13.0
GPD Global has been awarded two Global Technology Awards in the categories of Adhesives/Coatings/Encapsulants and Dispensing Equipment for its PCD Dispensing on the MAX Series Platform
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Parts & Supplies | Pick and Place/Feeders
Single pendulum on JUKI FF 16MM feeder wheel 40001982 OCC A LIGHT PCB ASM 40002065 Y-AXIS LMT CABLE ASM 40002066 X-AXIS LMT CABLE ASM 40002068 YL LMT SENSOR ASM 40002069 +YL LMT SENSOR(TRAY)ASM 40002070 +YL LMT SENSOR(FEEDER)A 40002072 HEAD
Parts & Supplies | Pick and Place/Feeders
Many companies first applied SMT second-hand placement machines, and the selected placement machines were relatively stable, with low failure rate, easy maintenance, and important maintenance costs. Therefore, there are still many concerns about buyi
Technical Library | 2020-08-27 01:22:45.0
Initially adopted internal specifications for acceptance of printed circuit boards (PCBs) used for wire bonding was that there were no nodules or scratches allowed on the wirebond pads when inspected under 20X magnification. The nodules and scratches were not defined by measurable dimensions and were considered to be unacceptable if there was any sign of a visual blemish on wire-bondable features. Analysis of the yield at a PCB manufacturer monitored monthly for over two years indicated that the target yield could not be achieved, and the main reasons for yield loss were due to nodules and scratches on the wirebonding pads. The PCB manufacturer attempted to eliminate nodules and scratches. First, a light-scrubbing step was added after electroless copper plating to remove any co-deposited fine particles that acted as a seed for nodules at the time of copper plating. Then, the electrolytic copper plating tank was emptied, fully cleaned, and filtered to eliminate the possibility of co-deposited particles in the electroplating process. Both actions greatly reduced the density of the nodules but did not fully eliminate them. Even though there was only one nodule on any wire-bonding pad, the board was still considered a reject. To reduce scratches on wirebonding pads, the PCB manufacturer utilized foam trays after routing the boards so that they did not make direct contact with other boards. This action significantly reduced the scratches on wire-bonding pads, even though some isolated scratches still appeared from time to time, which caused the boards to be rejected. Even with these significant improvements, the target yield remained unachievable. Another approach was then taken to consider if wire bonding could be successfully performed over nodules and scratches and if there was a dimensional threshold where wire bonding could be successful. A gold ball bonding process called either stand-off-stitch bonding (SSB) or ball-stitch-on-ball bonding (BSOB) was used to determine the effects of nodules and scratches on wire bonds. The dimension of nodules, including height, and the size of scratches, including width, were measured before wire bonding. Wire bonding was then performed directly on various sizes of nodules and scratches on the bonding pad, and the evaluation of wire bonds was conducted using wire pull tests before and after reliability testing. Based on the results of the wire-bonding evaluation, the internal specification for nodules and scratches for wirebondable PCBs was modified to allow nodules and scratches with a certain height and a width limitation compared to initially adopted internal specifications of no nodules and no scratches. Such an approach resulted in improved yield at the PCB manufacturer.
Technical Library | 2016-05-26 15:07:36.0
The oxide layers are known as wetting inhibitors in component and PCB metallizations. The oxide acts as barrier that prevent the tin diffusion from happening. Besides, in corrosion studies, the role of salt residues -with Cl ion- on some metals is known as being promoters of oxidation or corrosion. On the other hand, most of corrosion studies with tin metallization are focused mainly on the corrosion resistance of tin alloys, but little has been done respecting to the influence of salts on tin metallization wetting. In this paper, a series of experiments was carried over to know the influence of specifically NaCl on BGA wetting given Head in Pillow (HiP) as result.
Flux spray coating on a PCB with uniformal thickness down to 5 microns, with clear edge definition and minimal overspray. Can coat large or shoot dots with the same jet.
https://www.ascen.ltd/Products/Automatic_SMT_equipment/PCB_conveyor/100.html PCB linking conveyor and PCB belt conveyor mainly used to connect different type PCB board handing equipment effectively for the SMT production line. ASCEN technology is ava
Career Center | Racine, Wisconsin USA | Engineering
Cree currently has a job vacancy for an SMT Process Technician in our Lighting Manufacturing facility in Racine, Wisconsin. Summary: This person will be a primary contributor to the startup of a new SMT production line for LED PCB Assembly. This
Career Center | Milwaukee, Wisconsin USA | Engineering
Cree Lighting, A company of IDEAL INDUSTRIES, is an LED lighting pioneer known for being first – first to bring LED lighting to the masses, first to deliver no compromise white light, and first to offer a sensor-integrated intelligent lighting
Career Center | Bangalore-560026, Karnataka India | Engineering,Maintenance,Technical Support
New Product Introduction & Product dovelopment
Career Center | la jolla, California USA | Engineering
More than 18 years experience in AOI. Refer to my resume for more details.
requiring regeneration from scratch to address very
PCB Libraries, Inc. | https://www.pcblibraries.com/forum/footprint-on-flex_topic2857.html
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+1 on Google Plus Latest News Introducing our New Model RW-SV2000A BGA Rework Station Precision PCB Services, Inc. is excited to announce the addition of our
Products, services, training & consulting for the assembly, rework & repair of electronic assemblies. BGA process experts. Manufacturers Rep, Distributor & Service Provider for Seamark/Zhuomao and Shuttle Star BGA Rework Stations.
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