Industry Directory | Consultant / Service Provider / Equipment Dealer / Broker / Auctions / Manufacturer's Representative / Training Provider
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.
Industry Directory | Manufacturer
BGA repair machine Factory,bga reballing station,bga repair tools ,bga rework station,iphone repair machine
HTCC QFN Packages to 40GHz High Temperature Co-Fired Ceramic (HTCC) QFN packages from Barry Industries feature low-loss broadband transitions for superior performance over frequency. HTCC construction provides for enhanced mechanical strength and h
New Equipment | Test Equipment
For wearable devices and slimmer designed electronic products, we provide you two kinds of probe style test connector: 0.2mm and 0.35mm. Now you are allowed to achieve side access connection by 0.2mm probe directly, simulate FFC / FPC connectors; or
Electronics Forum | Sat Mar 24 05:25:07 EDT 2007 | mika
Thanks aj, Ohh I wish that there was a way to post a picture in this forum or a possibility to attach the datasheet... Which BTW does not have any recommendation of "how to". This package does not have the "center thermal pad" like a QFN or MLF pack
Electronics Forum | Fri Apr 06 16:36:39 EDT 2007 | mika
Ah, I almost forget (forgot?) to mention that according to the Gerber files (which is the info we send to the PCB-house) the PCB land pattern for this LGA-36 0.35mm rounded pads and the boardhouse cannot achieve this. I understand them; 0.35mm pads,
Used SMT Equipment | Screen Printers
DEK Horizon 03i automatic stencil printer Specification ： DEK Horizon 03i High Precision Automatic Solder Paste Printer designed for high precision steel mesh printing or stencil printing in SMT industry. Printing PCB size: 50x50mm to 508x510mm;
Used SMT Equipment | SMT Equipment
Product Name:Panasoinc high speed chip mounter NPM Product number: NPM1 Detailed product introduction NPM multifunction machine, SMT machine, machine with function function function, check the dispensing machine, is a multifunctional equipment
Industry News | 2003-05-19 08:44:19.0
Two new PCB power connectors offer easy high power wiring (up to 54A) with built-in safety features to prevent incorrect connections and resist strong vibration.
Industry News | 2011-09-14 12:04:43.0
The SMTA announced a session on QFN Assembly and Reliability will take place on Tuesday, October 18 during their annual conference, SMTA International, in Ft. Worth, Texas. Andrew Mawer of Freescale Semiconductor will chair the session and Viswam Puligandla, Ph.D., Nokia (Retired) will co-chair.
Parts & Supplies | Pick and Place/Feeders
FUJI FEEDER PARTS FULL SERIES Part Name：HARNESS IP/TAPE FEEDER PART No：IEH1510 Part Name：HARNESS PART No：IEH1511 Part Name：LINK LEVER(CP6 16*8连杆) PART No：AWCC3502 Part Name：HOLDER, REEL PART No：PJ02157 Part Name：RETAINER (NXT-2 压料盖) PART
Parts & Supplies | Pick and Place/Feeders
CP6 8*2 SPROCKET Part Name：HARNESS IP/TAPE FEEDER PART No：IEH1510 Part Name：HARNESS PART No：IEH1511 Part Name：LINK LEVER(CP6 16*8连杆) PART No：AWCC3502 Part Name：HOLDER, REEL PART No：PJ02157 Part Name：RETAINER (NXT-2 压料盖) PART No： Part Na
Technical Library | 2016-10-03 08:28:47.0
With the miniaturization of electronic device, Land Grid Array (LGA) or QFN has been widely used in consumer electronic products. However there is only 20-30 microns gap left between LGA and the substrate, it is very difficult for capillary underfill to flow into the large LGA component at room temperature. Insufficient underfilling will lead to the loss of quality control and the poor reliability issue. In order to resolve these issues, a room temperature fast flow reworkable underfill has been successfully developed with excellent flowability. The underfill can flow into 20 microns gap and complete the flow of 15mm distance for about 30 seconds at room temperature. The curing behavior, storage, thermal cycling performance and reworkability will be discussed in details in this paper.
Technical Library | 2020-11-24 23:01:04.0
The miniaturization trend is driving industry to adopting low standoff components or components in cavity. The cost reduction pressure is pushing telecommunication industry to combine assembly of components and electromagnetic shield in one single reflow process. As a result, the flux outgassing/drying is getting very difficult for devices due to poor venting channel. This resulted in insufficiently dried/burnt-off flux residue. For a properly formulated flux, the remaining flux activity posed no issue in a dried flux residue for no-clean process. However, when venting channel is blocked, not only solvents remain, but also activators could not be burnt off. The presence of solvents allows mobility of active ingredients and the associated corrosion, thus poses a major threat to the reliability. In this work, a new halogen-free no-clean SnAgCu solder paste, 33-76-1, has been developed. This solder paste exhibited SIR value above the IPC spec 100 MΩ without any dendrite formation, even with a wet flux residue on the comb pattern. The wet flux residue was caused by covering the comb pattern with 10 mm × 10 mm glass slide during reflow and SIR testing in order to mimic the poorly vented low standoff components. The paste 33-76-1 also showed very good SMT assembly performance, including voiding of QFN and HIP resistance. The wetting ability of paste 33-76-1 was very good under nitrogen. For air reflow, 33-76-1 still matched paste C which is widely accepted by industry for air reflow process. The above good performance on both non-corrosivity with wet flux residue and robust SMT process can only be accomplished through a breakthrough in flux technology.
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 degrees fixed up, easy printing stencil and squeegee cleaning and replacement. 3
Suitable for diversified glass fibre board, FR-4 board, aluminum board, etc, especially for the PCB with components on both sides. If you have any question about the machine, please feel free to contact e-mial : bella@qy-smt.com
Defect Free QFN Assembly Defect Free QFN Assembly The problem with soldering QFN packages is that they float, skew and tilt on the 'domed' melted solder during the SMT re-flow process. This floating, skewing and/or tilting will lead to solder
PCB Libraries, Inc. | https://www.pcblibraries.com/Forum/qfn-thermal-via-pitch_topic2914.html
QFN Thermal Via Pitch - PCB Libraries Forum Forum Home > Libraries > Footprints / Land Patterns > Altium New Posts FAQ Search Events Register Login QFN Thermal Via Pitch
Surface Mount Technology Association (SMTA) | https://www.smta.org/knowledge/proceedings_abstract.cfm?PROC_ID=5218
: SMTA International Abstract: The Pb-free solder joint attachment reliability of two Quad Flat No-Lead (QFN) packages with different body sizes and die to package ratios (DPR
winsouce.jpg)
.gif)
