Industry Directory | Consultant / Service Provider / Manufacturer
Accu-Assembly is dedicated to providing Automation, Quality Assurance, and Material Handling solutions to manufacturing customers worldwide.
Technical Library | 2018-09-21 10:12:53.0
Moisture accumulates during storage and industry practice recommends specific levels of baking to avoid delamination. This paper will discuss the use of capacitance measurements to follow the absorption and desorption behaviour of moisture. The PCB design used in this work, focused on the issue of baking out moisture trapped between copper planes. The PCB was designed with different densities of plated through holes and drilled holes in external copper planes, with capacitance sensors located on the inner layers. For trapped volumes between copper planes, the distance between holes proved to be critical in affecting the desorption rate. For fully saturated PCBs, the desorption time at elevated temperatures was observed to be in the order of hundreds of hours. Finite difference diffusion modelling was carried out for moisture desorption behaviour for plated through holes and drilled holes in copper planes. A meshed copper plane was also modelled evaluating its effectiveness for assisting moisture removal and decreasing bake times. Results also showed, that in certain circumstances, regions of the PCB under copper planes initially increase in moisture during baking.
Industry Directory | Manufacturer
Design and Manufacture Desiccant Dry Cabinets for low humidity storage and baking of moisture sensitive components, PCBs, electronic materials, lab samples, digital media and medical devices.
New Equipment | Rework & Repair Equipment
Allgood Technology is equipped with a range of tools to rework and repair printed circuit assemblies to IPC-A-610 or your own company standards. Major Plant List: Metcal MFR-1351 Desoldering Station for through hole desoldering. Le
New Equipment | Board Handling - Storage
Dr. Storage offers the most diverse selection of Dry Cabinets in the industry. The latest Dr. Storage cabinets include cabinets drying at 1% RH, drying at less than 1% RH and baking at 60°C. Cabinets are plug and play so they are up and running easil
Industry News | 2012-01-05 19:20:11.0
Multitest announces that its UltraFlat™ process meets the requirements of high parallel vertical probe card applications.
Industry News | 2011-12-30 23:20:54.0
SMART Group, Europe’s largest technical trade association focusing on surface mount and related technologies, announces that it will host a workshop titled Handling Moisture-Sensitive Components & PCBs Without Failure on Wednesday, January 25, 2012 at the Stoke Mandeville Stadium in Aylesbury, Buckinghamshire, UK.
Industry Directory | Consultant / Service Provider / Manufacturer
SemiPack Services is an Electronic Manufacturing Support Service to the semiconductor industry. We specialize in providing support services to high-mix low-volume (HMLV) customers
Industry Directory | Consultant / Service Provider / Manufacturer
Eureka Dry Tech's IPC/JEDEC J-Std-033c Ultra Low Humidity Dry Cabinets provides moisture/humidity controlled storage of MSD，PCB, IC packages. Drying technology trusted by millions in replacing baking, nitrogen & desiccant packs.
With the development of miniaturization of assembly components, the layout area and pattern design area of PCBs have also been continuously reduced, and PCB manufacturers are constantly updating the production process to conform to the development tr
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.
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