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Epec's Blog | Electronics Manufacturing Solutions

PCB Laminate Material FAQs

Written by Al Wright
Posted on May 3, 2018 at 11:34 AM

All customers have questions when it comes to PCB laminate materials, so we took some of the most common questions and put together a helpful FAQ to bring you answers and solutions faster.

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How Added Electronics Improve Your Cable Assembly Design

Written by Epec Engineered Technologies
Posted on April 9, 2018 at 12:42 PM

As custom manufactured cable assemblies have grown in complexity, it has become far more common to see various electronics integrated directly into the finished design. The inclusion of electronics into a cable assembly design can consist of adding a switch, PCB, LED, or a multitude of other components. Once added, these components offer a much higher level of sophistication to the cable assembly while allowing the included electronics the ability to withstand a much more rugged working environment.

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Flex PCB Stackup Documentation

Written by Paul Tome
Posted on April 3, 2018 at 11:57 AM

The flex PCB stackup documentation is an important component of the data set of a flexible printed circuit board design. It consists of a description of a flex or rigid-flex circuit board that defines in detail the specific material requirements and construction of the design.

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Flex PCB EMI Shielding Methods and Materials

Written by Paul Tome
Posted on March 26, 2018 at 3:26 PM

Many electronics assemblies that utilize flexible printed circuit boards are sensitive to either absorbing or emitting electromagnetic interference (EMI). If EMI is left uncontrolled it can negatively impact the performance of the design and in extreme cases completely prevent it from functioning.

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Combining PCB Surface Finishes on External PCB Layers

Written by Jim Marsh
Posted on February 26, 2018 at 11:05 AM

The reason printed circuit boards (PCBs) require a surface finish rather than being left as simply bare copper is because while copper is an excellent conductor, leaving it exposed will cause it to oxidize and deteriorate over time. The increased exposure will cause the PCB to fail much sooner than expected.

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Cable Assembly Design For Shielding From EMI and RFI

Written by Epec Engineered Technologies
Posted on February 19, 2018 at 1:00 PM

EMI (electromagnetic interference) and RFI (radio-frequency interference) are disturbances generated by external sources that impact a cable assembly by degrading the assembly's performance or completely preventing it from functioning. These disturbances can cause problems ranging from an increase in error rates of the signal being transmitted through the assembly to total loss of any electronically readable signal.

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Achieve Very Broad Bandwidth With High Pass/Low Pass Series Elements

Written by Mark Stanley
Posted on January 24, 2018 at 4:36 PM

For many narrow to wide bandwidth band pass applications, pure band pass filters (also bandpass filters or BPF) are a good fit, - forming rejection bands below and above the passband in a single filter. Coupled line, combline, and interdigital are three pure band pass filter types. Pure filters can be the most efficient solutions for loss and physical footprint where the specs mandate their usage. For ultra-wideband applications, pure solutions may require too many poles making physical size too large and insertion loss too high for many systems.

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Microwave Filter Design For High-Reliability Applications

Written by Mark Stanley
Posted on September 19, 2017 at 11:06 AM

When designing and manufacturing passive broadband high frequency cascaded LC filters (inductor and capacitor), a lot of undesirable component interactions can occur if not properly managed. The goal is to minimize the difference between an RF microwave filter design constructed with ideal components and one using commercial off-the-shelf (COTS) and custom manufactured components.

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Innovative HMI Technology and Design Advancements

Written by Steven J Goodman
Posted on September 12, 2017 at 1:23 PM

Over the last 25 years, the evolution of touch screen technologies has brought sweeping changes to how society uses human-machine interface (HMI) products. Originally touch screens were small, monochrome, and required a stylus and single touchpoint to operate.

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Rigid-Flex PCB Gerber Layout Requirements

Written by Paul Tome
Posted on August 16, 2016 at 4:07 PM

Rigid-flex printed circuit boards are unique in terms of integrated construction of both rigid and flex circuit technologies. Unique construction comes with unique requirements that should be reviewed and implemented during the rigid-flex PCB Gerber layout phase of the design process.

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