Industry Directory | Consultant / Service Provider / Distributor / Equipment Dealer / Broker / Auctions / Manufacturer / Manufacturer's Representative
DONGGUAN KINGSUN AUTOMATION TECHNOLOGY CO.,LTD is a company which mainly provide used and new SMT parts, provide repair SMT key parts service,new/used SMT machine trading,SMT consumables and Peripherals equipment,Clean room, ESD..
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PB Technik supplies SMT equipment and materials to the Polish market. JUKI ERSA EKRA BRADY MARANTZ
Automated Desk Dispensing Machine - Efficient and Convenient ❙ Introduce of Desk Automatic Dispensing Machine Semiconductor packaging, PCB electronic parts fixation and protection, mobile phone, notebook shell bonding, LCD glass substrate packag
DIP Double-side Camera Online AOI Machine ETA-V5300 If you could not find any similar items you want, you may send some photos to us. because our catalog and website haven't included all of our products. solder paste inspection,SMT SPI,SPI mac
Electronics Forum | Tue Oct 02 12:56:41 EDT 2001 | Scott B
We have come across this where the operator was using thin gauge solder wire (more suited to fine pitch SMT soldering) to form large solder fillets (power connections or sheild cans). We found that the operator was feeding large amounts of solder wir
Electronics Forum | Sun Sep 30 00:54:06 EDT 2001 | chinaman
Has anybody heard about solder wires for rework with a V-notch in order to avoid solder balls which might be caused by shooting flux when getting hot. The notch is as deep to reach the core so that the flux can expand easily. I can imagine the effect
Industry News | 2005-09-19 16:07:56.0
No higher temperature and No process changes needed
Industry News | 2010-04-10 02:05:54.0
IPC released today the A revision of IPC J-STD-609, Marking and Labeling of Components, PCBs and PCBAs to Identify Lead (Pb), Lead-Free (Pb-Free) and Other Attributes. This standard presents a marking and labeling system that aids in electronics assembly, rework, repair and recycling, and now provides additional codes for the more precise specification of certain lead-free solders.
Parts & Supplies | Pick and Place/Feeders
KHY-M221A-A0 KGT-M221A-A0 YAMAHA YG12 tank chain gland KHY-M2267-00 YG12 tank chain YS12 towline keel X axis PISCO SP2550 R75 KHY-M2276-S0 YS12 screw X-axis YG12 X-axis screw YG12F YS12F screw guide KHY-M371R-00 RAIL GUIDE 12P YS24 YS100 Feida pl
Parts & Supplies | Assembly Accessories
YAMAHA YS24 track mounter table Y axis tank chain keel drag chain KKE-M919F-00 YAMAHA YS24 track mounter table Y axis tank chain keel drag chain KKE-M919F-00 We also supply the below products: KHY-M71G5-A0 Z UNIT ASSY. YS12 Z-axis motor YG12 Z
Technical Library | 2020-05-08 18:22:31.0
A customer contacted the Helpline to perform analysis on a lead-free assembly which exhibited intermittent functionality. The lead-free assembly exhibiting intermittent functionality when pressure was applied to the ball grid array (BGA) packages. Industrial adaptation of a Restriction of Hazardous Substances (RoHS) compliant solder standard has created a new host of failure modes observed in lead-free assemblies. Pad cratering occurs when fractures propagate along the epoxy resin layer on the underside of the BGA connecting pads. While originating from process, design, and end use conditions, it is the combination of a rigid lead-free solder with inflexible printed circuit board (PCB) laminates that has advanced the prevalence of this condition. Pad cratering is simply the result of mechanical stress exceeding material limitations.
Technical Library | 2016-10-20 18:13:34.0
Pad cratering failure has emerged due to the transition from traditional SnPb to SnAgCu alloys in soldering of printed circuit assemblies. Pb-free-compatible laminate materials in the printed circuit board tend to fracture under ball grid array pads when subjected to high strain mechanical loads. In this study, two Pb-free-compatible laminates were tested, plus one dicycure non-Pb-free-compatible as control. One set of these samples were as-received and another was subjected to five reflows. It is assumed that mechanical properties of different materials have an influence on the susceptibility of laminates to fracture. However, the pad cratering phenomenon occurs at the layer of resin between the exterior copper and the first glass in the weave. Bulk mechanical properties have not been a good indicator of pad crater susceptibility. In this study, mechanical characterization of hardness and Young’s modulus was carried out in the critical area where pad cratering occurs using nano-indentation at the surface and in a cross-section. The measurements show higher modulus and hardness in the Pb-free compatible laminates than in the dicy-cured laminate. Few changes are seen after reflow – which is known to have an effect -- indicating that these properties do not provide a complete prediction. Measurements of the copper pad showed significant material property changes after reflow.
Lyra Reflow Oven is a soft soldering that realizes the mechanical and electrical connection between the solder ends of surface mount components or the pins and the printed board pads by remelting the solder paste pre-distributed on the printed board
DIP Double-side Camera Online AOI Machine ETA-V5300 If you could not find any similar items you want, you may send some photos to us. because our catalog and website haven't included all of our products. solder paste inspection,SMT SPI,SPI mac
Training Courses | | | IPC-600 Specialist (CIS)
The Certified IPC-600 Specialist (CIS) training targets quality assurance and acceptance of bare printed circuit boards.
Training Courses | | | IPC-600 Specialist (CIS)
The Certified IPC-600 Specialist (CIS) training targets quality assurance and acceptance of bare printed circuit boards.
Heller Industries Inc. | https://hellerindustries.com/parts/422375/
? Reflow Soldering Problems Overview Causes & Defects – Reflow Soldering Solder Ball Defects Opensor Insufficient Solder Wicking Defects Tombstoning PCB Soldering PCB Bridging Defects PCB Dewetting PCB Nonwetting Circuit Board Voids PCB Delamination
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