Industry News | 2018-10-18 11:13:35.0
PCB Outline Layer And Keep-out Polygon Clearance
New Equipment | Assembly Services
Quick turn Prototype PCBs from 24 hour turnaround to high volume printed circuit board production from our domestic plant in USA and/or China facilities. Our Modern 38,000 sq. ft. manufacturing plant with multi-million dollar investment with latest e
Industry News | 2021-10-31 04:57:58.0
Averatek is pleased to announce that VP of Manufacturing Divyakant Kadiwala will present the paper entitled, "Surface Treatment for Soldering Aluminum PCBs to Conventional Copper PCBs" during the IPC APEX EXPO Technical Conference, scheduled to take place Jan. 22-27, 2022 at the San Diego Convention Center in California. The paper was co-authored by Nazarali Merchant, Ph.D., Senior Materials Scientist for Averatek.
Industry News | 2022-01-03 07:38:59.0
Averatek is pleased to announce that VP of Manufacturing Divyakant Kadiwala will present the paper entitled, "Surface Treatment for Soldering Aluminum PCBs to Conventional Copper PCBs" during the IPC APEX EXPO Technical Conference, scheduled to take place Jan. 22-27, 2022 at the San Diego Convention Center in California. The paper was co-authored by Nazarali Merchant, Ph.D., Senior Materials Scientist for Averatek.
Technical Library | 2023-03-16 18:51:43.0
Conductive anodic filament (CAF) formation was first reported in 1976.1 This electrochemical failure mode of electronic substrates involves the growth of a copper containing filament subsurface along the epoxy-glass interface, from anode to cathode. Despite the projected lifetime reduction due to CAF, field failures were not identified in the 1980s. Recently, however, field failures of critical equipment have been reported.2 A thorough understanding of the nature of CAF is needed in order to prevent this catastrophic failure from affecting electronic assemblies in the future. Such an understanding requires a comprehensive evaluation of the factors that enhance CAF formation. These factors can be grouped into two types: (1) internal variables and (2) external influences. Internal variables include the composition of the circuit board material, and the conductor metallization and configuration (i.e. via to via, via to surface conductor or surface conductors to surface conductors). External influences can be due to (1) production and (2) storage and use. During production, the flux or hot air solder leveling (HASL) fluid choice, number and severity of temperature cycles, and the method of cleaning may influence CAF resistance. During storage and use, the principal concern is moisture uptake resulting from the ambient humidity. This paper will report on the relationship between these various factors and the formation of CAF. Specifically, we will explore the influences of printed wiring board (PWB) substrate choice as well as the influence of the soldering flux and HASL fluid choices. Due to the ever-increasing circuit density of electronic assemblies, CAF field failures are expected to increase unless careful attention is focused on material and processing choices.
Industry News | 2008-08-07 15:26:07.0
Nihon Superior will feature a new, expanded range of SN100C products with FCT Assembly, one of its US SN100C Global Partners, in booth 125 at the upcoming SMTA International exhibition and conference.
Industry Directory | Consultant / Service Provider / Manufacturer
PROPOX is a manufacturer of electronics, industrial automatics, telemetric systems, tools, modules and evaluation circuits used by the constructors of electronics.
Technical Library | 2020-10-27 02:07:31.0
For companies that choose to take the Pb-free exemption under the European Union's RoHS Directive and continue to manufacture tin-lead (Sn-Pb) electronic products, there is a growing concern about the lack of Sn-Pb ball grid array (BGA) components. Many companies are compelled to use the Pb-free Sn-Ag-Cu (SAC) BGA components in a Sn-Pb process, for which the assembly process and solder joint reliability have not yet been fully characterized. A careful experimental investigation was undertaken to evaluate the reliability of solder joints of SAC BGA components formed using Sn-Pb solder paste. This evaluation specifically looked at the impact of package size, solder ball volume, printed circuit board (PCB) surface finish, time above liquidus and peak temperature on reliability. Four different BGA package sizes (ranging from 8 to 45 mm2) were selected with ball-to-ball pitch size ranging from 0.5mm to 1.27mm. Two different PCB finishes were used: electroless nickel immersion gold (ENIG) and organic solderability preservative (OSP) on copper. Four different profiles were developed with the maximum peak temperatures of 210oC and 215oC and time above liquidus ranging from 60 to 120 seconds using Sn-Pb paste. One profile was generated for a lead-free control. A total of 60 boards were assembled. Some of the boards were subjected to an as assembled analysis while others were subjected to an accelerated thermal cycling (ATC) test in the temperature range of -40oC to 125oC for a maximum of 3500 cycles in accordance with IPC 9701A standard. Weibull plots were created and failure analysis performed. Analysis of as-assembled solder joints revealed that for a time above liquidus of 120 seconds and below, the degree of mixing between the BGA SAC ball alloy and the Sn-Pb solder paste was less than 100 percent for packages with a ball pitch of 0.8mm or greater. Depending on package size, the peak reflow temperature was observed to have a significant impact on the solder joint microstructural homogeneity. The influence of reflow process parameters on solder joint reliability was clearly manifested in the Weibull plots. This paper provides a discussion of the impact of various profiles' characteristics on the extent of mixing between SAC and Sn-Pb solder alloys and the associated thermal cyclic fatigue performance.
Industry News | 2018-01-09 18:57:15.0
Conecsus will exhibit true metals recycling solutions that reward the recycling customer at IPC/APEX EXPO 2018 in San Diego, California, February 27-March 1. Conecsus representatives in booth #919 will illustrate how the company processes wastes containing primarily Tin, Tin-Zinc, Lead, Silver, Gold, and Copper, and converts them into usable metal products for sale into the global market.
