1, All the main parts of the equipment are imported parts, long service life. 2, using the upper and lower two temperature control area, using PID automatic fuzzy temperature control system, high precision temperature control, high stability, tempera
New Equipment | Industrial Automation
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Electronics Forum | Sat Jun 11 07:51:15 EDT 2016 | davef
Hi Steve ... There are arguments between fabricators and thermal relievers about adding non-connected copper tabs to barrels in hopes of providing thermal relief, but that's not what you're talking about, I believe. I don't foresee an issue moving t
Electronics Forum | Wed Jun 08 17:35:04 EDT 2016 | slthomas
We all know that whenever possible, we want thermal relief between the barrel/pad and the copper foil to make it easier to properly solder that through hole connector. My question is, assuming there is no connection from the barrel to a copper layer
Industry News | 2003-03-11 08:45:00.0
CAMtastic DXP is the latest version of Altium's complete CAM verification and editing system that bridges the gap between PCB design and manufacturing and facilitates communication between board designers, fabrication engineers, and their clients.
Industry News | 2018-10-18 08:29:16.0
How to Prevent Short Circuits to Ground in QFN Components?
Parts & Supplies | Pick and Place/Feeders
101004 TRANSISTOR BC108 NPN 101020 POWER SUPPLY – UPRATED CURRENT 101047 SQUEEGEE MATERIAL 9.5 X 9.5 85-90 101081 CONNECTOR CIRCULAR 14WAY 97-3102A 101142 FRONT SQUEEGEE CARRIAGE 101143 OUTER MTG SQUEEGEE BLOCK 101145 COVER (TXT) 101146
Parts & Supplies | Pick and Place/Feeders
101004 TRANSISTOR BC108 NPN 101020 POWER SUPPLY – UPRATED CURRENT 101047 SQUEEGEE MATERIAL 9.5 X 9.5 85-90 101081 CONNECTOR CIRCULAR 14WAY 97-3102A 101142 FRONT SQUEEGEE CARRIAGE 101143 OUTER MTG SQUEEGEE BLOCK 101145 COVER (TXT) 101146
Technical Library | 2020-10-14 14:33:36.0
Epoxy based adhesives are prevalent interface materials for all levels of electronic packaging. One reason for their widespread success is their ability to accept fillers. Fillers allow the adhesive formulator to tailor the electrical and thermal properties of a given epoxy. Silver flake allow the adhesive to be both electrically conductive and thermally conductive. For potting applications, heat sinking, and general encapsulation where high electrical isolation is required, aluminum oxide has been the filler of choice. Today, advanced Boron Nitride filled epoxies challenge alternative thermal interface materials like silicones, greases, tapes, or pads. The paper discusses key attributes for designing and formulating advanced thermally conductive epoxies. Comparisons to other common fillers used in packaging are made. The filler size, shape and distribution, as well as concentration in the resin, will determine the adhesive viscosity and rheology. Correlation's between Thermal Resistance calculations and adhesive viscosity are made. Examples are shown that determination of thermal conductivity values in "bulk" form, do not translate into actual package thermal resistance. Four commercially available thermally conductive adhesives were obtained for the study. Adhesives were screened by shear strength measurements, Thermal Cycling ( -55 °C to 125 °C ) Resistance, and damp heat ( 85 °C / 85 %RH ) resistance. The results indicate that low modulus Boron Nitride filled epoxies are superior in formulation and design. Careful selection of stress relief agents, filler morphology, and concentration levels are critical choices the skilled formulator must make. The advantages and limitations of each are discussed and demonstrated.
Technical Library | 2022-08-08 15:06:06.0
Selective soldering has evolved to become a standard production process within the electronics assembly industry, and now accommodates a wide variety of through-hole component formats in numerous applications. Most through-hole components can be easily soldered with the selective soldering process without difficulty however some types of challenging components require additional attention to ensure that optimum quality is maintained. Several high thermal mass components can place demands on the selective soldering process, while the use of specialized solder fixtures, or solder pallets, often places additional thermal demand on the preheating process. Fine-pitch through-hole components and connectors place a different set of demands on the selective soldering process and typically require special attention to lead projection and traverse speed to minimize bridging between adjacent pins. Dual in-line memory module (DIMM) connectors, compact peripheral component interface (cPCI) connectors, coax connectors and other high thermal mass components as well as fine-pitch microconnectors, can present challenges when soldered into backplanes or multilayer printed circuit board assemblies. Adding to this challenge, compact peripheral component interface connectors can present additional solderability issues because of their beryllium copper base metal pins. Key Terms: Selective soldering, drop-jet fluxing, sustained preheating, flux migration, adjacent clearance, lead-to-hole aspect ratio, lead projection, thermal reliefs, gold embrittlement, solderability testing.
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Events Calendar | Tue May 17 00:00:00 EDT 2022 - Thu May 19 00:00:00 EDT 2022 | Amsterdam, Netherlands
Electronics in Harsh Environments Conference and Exhibition
SMTnet Express, May 7, 2020, Subscribers: 36,108, Companies: 11,001, Users: 25,793 Solutions for Selective Soldering of High Thermal Mass and Fine-Pitch Components Credits: Nordson SELECT The selective soldering process has evolved to become a
ASYMTEK Products | Nordson Electronics Solutions | https://www.nordson.com/en/divisions/efd/products/thermal-compounds?con=t&page=24
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