New Equipment | Solder Materials
An easy-to-use cost-effective solution for producing professionally masked PCBs in an in-house prototyping environment. Compact, quick and easy to use Professional finish and perfect soldering Four simple steps to a professional result
Lite Fast SR-1000, a UV Solder Mask, was designed to screen print over conductive traces, landing pads, resistors, fuses and capacitors on Printed Circuit Boards (PCBs) and ceramic substrates. Other applications include metal and various plastics.
Electronics Forum | Tue Dec 30 11:29:13 EST 2008 | davef
People use green soldermask because people use green soldermask. In the 1950s, the US military selected green, because they liked green better than other colors. So, here we are. We believe the performance of red and blue is comparable with green. T
Electronics Forum | Wed Dec 12 17:00:14 EST 2001 | mparker
Aw Dave - you guys are so fashionable, are the dark green and red combos seasonal? caramel brown like a Pale Ale? I once heard that the green was chosen because it gives the best color contrast for white silk screens. As for color reflecting or abs
Industry News | 2019-01-12 07:42:28.0
IPC – Association Connecting Electronics Industries® announces the winners of the IPC APEX EXPO 2019 Innovation Awards, a celebration of the innovators and forward thinkers who are changing the technological landscape of the electronics industry.
Industry News | 2011-04-20 21:26:17.0
IPC — Association Connecting Electronics Industries® presented Special Recognition, Distinguished Committee Leadership and Committee Service awards and a Presidents Award at IPC APEX EXPO™, held April 10–14, in Las Vegas.
Parts & Supplies | Assembly Accessories
CAMERA PROTECTING MASK N610008157AA AI splicing masking tape (2000pcs/roll) AIS-2000 CAMERA PROTECTING MASK N610008157AA Disposable Mask KF 17.5*9.5 CM KN95 Face Mask MASK & PCB CLEANING SYSTEM MOREL 280 C&
Parts & Supplies | Circuit Board Assembly Products
1). FR-4 Material 2). 2 layer, 1.2mm thick 3). 5 oz copper weight. 4). LPI Green solder mask/White silk screen 5). Immersion gold over nickle
Technical Library | 2019-09-24 15:41:53.0
This paper focuses on three different coating material groups which were formulated to operate under high thermal stress and are applied at printed circuit board manufacturing level. While used for principally different applications, these coatings have in common that they can be key to a successful thermal management concept especially in e-mobility and lighting applications. The coatings consist of: Specialty (green transparent) liquid photoimageable solder masks (LPiSM) compatible with long-term thermal storage/stress in excess of 150°C. Combined with the appropriate high-temperature base material, and along with a suitable copper pre-treatment, these solder resists are capable of fulfilling higher thermal demands. In this context, long-term storage tests as well as temperature cycling tests were conducted. Moreover, the effect of various Cu pre-treatment methods on the adhesion of the solder masks was examined following 150, 175 and 200°C ageing processes. For this purpose, test panels were conditioned for 2000 hours at the respective temperatures and were submitted to a cross-cut test every 500 h. Within this test set-up, it was found that a multi-level chemical pre-treatment gives significantly better adhesion results, in particular at 175°C and 200°C, compared with a pre-treatment by brush or pumice brush. Also, breakdown voltage as well as tracking resistance were investigated. For an application in LED technology, the light reflectivity and white colour stability of the printed circuit board are of major importance, especially when high-power LEDs are used which can generate larger amounts of heat. For this reason, a very high coverage power and an intense white colour with high reflectivity values are essential for white solder masks. These "ultra-white" and largely non-yellowing LPiSM need to be able to withstand specific thermal loads, especially in combination with high-power LED lighting applications. The topic of thermal performance of coatings for electronics will also be discussed in view of printed heatsink paste (HSP) and thermal interface paste (TIP) coatings which are used for a growing number of applications. They are processed at the printed circuit board manufacturing level for thermal-coupling and heat-spreading purposes in various thermal management-sensitive fields, especially in the automotive and LED lighting industries. Besides giving an overview of the principle functionality, it will be discussed what makes these ceramic-filled epoxy- or silicone-based materials special compared to using "thermal greases" and "thermal pads" for heat dissipation purposes.
Printed circuit boards lacked with a green solder mask are - including SMT components - essential for soldering safely. Learn more: http://www.lpkf.com/products/rapid-pcb-prototyping/solder-masks-legend-printing/index.htm?utm_source=youtube&utm_mediu
Career Center | Lalkua, India | Engineering,Maintenance,Production,Quality Control,Research and Development,Technical Support
Machine maintenance Service and support knowledge with customer satisfactory. Deal with customers at all level via phone,remote and mail.Sound knowledge of PCB fabrication machine.
is facing issues with hot spots, solder joint stress
is facing issues with hot spots, solder joint stress
PCB Libraries, Inc. | https://www.pcblibraries.com/forum/ipc7093a-btc-qfn-solder-mask-defined-thermal-pad_topic2154_post11220.html
“absence of solder mask” as that CAD layer in a Negative image. The Green areas are solder mask. Here is the Land Pattern in the CAD tool illustrating the Paste Mask layer on top
ASCEN Technology | https://www.ascen.ltd/Products/Automatic_SMT_equipment/PCB_conveyor/932.html
Customer Service Contact Us Search 3M Cup mask making machine N95 mask making machine 3 Ply mask making machine PRODUCTS Email:info@ascen.ltd Skype:supplier889 PCB handling machine PCB conveyor PCB loader and unloader PCB depaneling machine PCB buffer Conformal coating equipment PCB auto optical inspection Solder paste printer SMT Smart equipment