Industry Directory | Consultant / Service Provider / Manufacturer
NORTEC, an international provider of full identification solutions for harsh industry environments.Specialized in thermal transfer labels,laser marking&cutting,precision die-cut parts,Hard/Software.
Industry Directory | Manufacturer
professional manufacturer of pcb
New Equipment | Fabrication Services
Rigid flex printed circuit boards (PCBs) are manufactured by combining rigid and flexible board technologies. These circuit boards are made up of multiple flexible circuit inner layers. An epoxy pre-preg bonding film is used to attach together these
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
Electronics Forum | Mon Sep 14 23:10:22 EDT 2009 | linseeg
The PCB green mask will become darker after few times IR reflow? What is the reason? Any acceptance spec refer to green mask requirement? Any method to measure the color level for PCB green mask? By naked eye or machine?
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 | 2018-10-18 10:24:59.0
Printed Circuit Board Solder resist
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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&
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Parts & Supplies | Assembly Accessories
DEK CAMERA 181054 Cover for P04CL Camera (PL4FA) 2AGTGA006400 CAMERA N610168458AA CCD Camera GP-MF802K N940GPMF802K CCD CAMERA XG-200M SM421 CCD CAMERA J67510015B Olympus Tough TG-5 Digital camera Olympus Tough T
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.
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
feeder PCB assembly equipment ASCEN equipment manual list PCB Depaneling Operate Manual Face mask making machine Mask making machine manual Dealer cooperation ASCEN Cooperation Pre-sale Service
