Industry Directory | Manufacturer
Manufacturer of advanced process chemistry for plating, masking and stripping. Custom manufacturing of automated equipment for electrodeposion including; hoist systems, reel-to-reel and continuous vertical processing equipment.
Industry Directory | Consultant / Service Provider / Distributor / Manufacturer / Other
Ludee Circuits offer RoHS PCB.We could offer leadfree HASL,Entek, flash gold, immersion gold, immersion silver, immersion tin finishing based on standard FR-4, CEM-3 materials, Teflon, Rogers RO4000 series, as well as high Tg S1170 materials.
Dual Lane SMT Reflow Oven Nitrogen soldering process dual rail conveyor Weight Appx.:3060Kg Dimension 6300*1680*1530mm Product description: 10 Zones Dual Rail Nitrogen SMT Reflow Oven KTR-1000D-N Manufacturer, Nitrogen soldering process, dual
Lead Free SMT Reflow Oven XMR-1000D Product features: ▶fully meet all kinds of lead-free welding process requirements. ▶WindowsXP operating system, English and Chinese interface, easy to learn operation; Standard air furnace, patented hot air system
Electronics Forum | Sun Sep 15 21:44:41 EDT 2002 | jason
Hi Dave, Immersion Ag has poor surface appearances after reflow or rather tarnished, while Immersion Tin requries higher temp. Probably that's why Immersion Ag is more preferred.
Electronics Forum | Wed Sep 01 08:27:38 EDT 2004 | davef
Zinc from the brass [Cu3Zn2] diffuses into the tin causing solderability problems. Just 0.001% of Zn in your solder can render it fit for the scrap heap. So, you need a barrier plate between the brass and the tin. Copper or nickel-plating is commonl
Used SMT Equipment | AOI / Automated Optical Inspection
Hardware composition: Ring LEDs (R, G, B) Image resolution 20µm Fixed shape, fixed substrate Single-phase power supply 100 to 240VAC ±10% The weight is below 500kg Equipment dimensions: 700W×900D×1600H mm (height
Used SMT Equipment | Soldering Equipment/Fluxes
The following Ersa Ecoselect 350 is a lead free selective solder system with various spares. It is included in the Manroland Online Auction scheduled for August 27-28 on www.xlineassets.com. This system will be sold to the highest bidder and is curre
Industry News | 2003-06-23 08:49:39.0
Three Organizations from the US, Europe and Japan to
Industry News | 2018-10-18 09:25:57.0
about wave soldering machine tin pot
Parts & Supplies | Assembly Accessories
JUKI NGA JIP PLATE A ASM E21499980A0 We are Supply SMT Pick and Place Equipment spare parts(Smt nozzle, Smt Cylinder, Smt Valve, Smt Sensor, Smt Feeder, Smt CPU Board, Smt Laser, Smt driver, Smt ejector……) for Yamaha, JUKI, FUJI ,Panasonic, Samsun
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Parts & Supplies | Pick and Place/Feeders
Supply&repair juki spare parts at l lower price: JUKI 710(720) CARRY UNIT E86127150B0 JUKI 710(720) CPU CARD E8601715AA0 JUKI 730(740) CARRY BOARD E86067210A0 JUKI 730(740) DC SERVO DRIVER E86037210A0 JUKI 750(760) AC SERVO CARD E86027210A0
Technical Library | 2014-06-23 14:50:52.0
It was unusual to see chip terminations change colors when tin lead solders were used but with the introduction of lead free reflow soldering and the corresponding increases in reflow temperatures terminations are now changing colors. Two conditions are present when reflow temperatures are increased for lead free solder alloys that leads to discoloration. Reflow temperatures are above the melting point of tin (Sn MP is 232oC). Air temperatures commonly used in forced convection reflow systems are high enough to both melt the tin plating on the termination allowing it to be pulled into the solder joint due to solder joint liquid solder surface tension leaving behind the exposed nickel barrier. Now those metal oxide colors will be visible due to high air temperatures during reflow.
Technical Library | 2023-08-04 15:27:30.0
A designed experiment evaluated the influence of several variables on appearance and strength of Pb-free solder joints. Components, with leads finished with nickel-palladium-gold (NiPdAu), were used from Texas Instruments (TI) and two other integrated circuit suppliers. Pb-free solder paste used was tin-silver-copper (SnAgCu) alloy. Variables were printed wiring board (PWB) pad size/stencil aperture (the pad finish was consistent; electrolysis Ni/immersion Au), reflow atmosphere, reflow temperature, Pd thickness in the NiPdAu finish, and thermal aging. Height of solder wetting to component lead sides was measured for both ceramic plate and PWB soldering. A third response was solder joint strength; a "lead pull" test determined the maximum force needed to pull the component lead from the PWB. This paper presents a statistical analysis of the designed experiment. Reflow atmosphere and pad size/stencil aperture have the greatest contribution to the height of lead side wetting. Reflow temperature, palladium thickness, and preconditioning had very little impact on side-wetting height. For lead pull, variance in the data was relatively small and the factors tested had little impact.
Suitable for cutting all kinds of PCB boards with V-cut, SMT circuit boards, aluminum boards, LED circuit boards, LED strips. Mainly used in the LED, SMT, mobile phone / mp3, electric toy, various electronic . please feel free to contact email addr
Suitable for cutting all kinds of PCB boards with V-cut, SMT circuit boards, aluminum boards, LED circuit boards, LED strips. Mainly used in the LED, SMT, mobile phone / mp3, electric toy, various electronic . please feel free to contact email addr
Training Courses | | | PCB Rework and Hand Soldering Courses
The PCB rework and hand soldering courses courses cover techniques of rework and repair of PCBs, BGAs and other electronics assemblies, and teach fundamentals of soldering of electronics assemblies.
Training Courses | | | PCB Rework and Hand Soldering Courses
The PCB rework and hand soldering courses courses cover techniques of rework and repair of PCBs, BGAs and other electronics assemblies, and teach fundamentals of soldering of electronics assemblies.
Career Center | Shen Zhen, China | Management,Sales/Marketing
Working in GLORYPCB for 10 years.knowing electronic supply chain very well. especially for PCB PCBA assembly and other Electronic Manufacturing Service.Glorypcb is a professional electronic manufacturer located in Shenzhen with three facilities.offe
Career Center | Houston, Texas USA | Engineering,Management,Quality Control,Technical Support
Seasoned Process & Quality Engineer. Degreed Chemical Engineer. 20+ years in Electronics Semiconductor manufacturing. Proficient in Quality Statistical tools, Design of Experiments, FMEAs, APQP, PPAP, ISO 9000, ISO/TS 16949 etc.
SMTnet Express, June 4, 2015, Subscribers: 22,829, Members: Companies: 14,364 , Users: 38,296 Tin Whisker Risk Mitigation for High-Reliability Systems Integrators and Designers David Pinsky, Elizabeth Lambert; Raytheon Integrators and designers
SMTnet Express, February 3, 2022, Subscribers: 25,970, Companies: 11,512, Users: 27,043 Next Best Thing to a Close Shave: Mitigating the Risks of Tin Whiskers If you've been in electronics for any length of time, the phenomenon
| https://www.eptac.com/faqs/ask-helena-leo/ask/vapor-phase-soldering-to-immersion-tin-plated-pads
: This is a very interesting question regarding the reflow of immersion tin plating. I’ve found and attached this web site that discusses this particular issue. http://ieeexplore.ieee.org/xpl/login.jsp?tp=&arnumber=4684411&url=http%3A%2F%2Fieeexplore.ieee.org%2Fstamp%2Fstamp.jsp%3Ftp%3D%26arnumber
| http://etasmt.com/cc?pageID=newsList&ID=te_news_bulletin,0&pNum=5
Cracking of multilayer ceramic capacitors has been attributed to excessive heating rates during reflow. Show Details Intermetallic Growth on PCB Where the tin-lead solder adheres to the copper of the lead (from plating) and to the pad
