<img height="1" width="1" style="display:none" src="https://www.facebook.com/tr?id=140460429997534&amp;ev=PageView&amp;noscript=1">

Epec's Blog | Electronics Manufacturing Solutions


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.

Read More  

Benefits to Utilizing an Inventory Management System

Written by Kendall Paradise
Posted on March 22, 2018 at 10:00 AM

With the uncertainty the global economy has brought over the last decade, it has been challenging for many companies to balance the fine line of just-in-time (JIT) inventory management, being line down, and being over budget on inventory numbers. We live in a world where next day delivery of virtually anything has become a guarantee, or at least an expectation.

Read More  

Why Pre-Bake Flex PCB Prior To Assembly?

Written by Paul Tome
Posted on March 15, 2018 at 10:05 AM

The pre-baking of flex printed circuit boards (PCB) immediately prior to assembly is an industry standard requirement that is documented in IPC2223 sec 5.3.5, IPC-FA-251 sec. 3.2.1.1.2 and by material suppliers (i.e. DuPont Pyralux Technical Manual sec. 5.23). This applies to all polyimide-based flex and rigid–flex designs. But why is pre-baking done prior to assembly, rather than earlier in the circuit board manufacturing stage?

Read More  

Common Flex Circuit Technical Issues That Delay Quick Turn Orders

Written by Paul Tome
Posted on March 6, 2018 at 2:20 PM

When ordering flex circuit boards online, quick turn order delivery timelines can incur setbacks if the data set is either incomplete or if the design has technical issues. Technical issues can be related to either manufacturability or the end use of the parts. These issues then often require multiple communications to resolve and in some worst-case scenarios, extensive design revision. Any of these issues will of course delay the delivery of the finished parts.

Read More  

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.

Read More  

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.

Read More  

Interpreting RF PCB Laminate Material Data Sheets

Written by Mark Stanley
Posted on February 16, 2018 at 11:25 AM

A printed circuit board (PCB) is an inexpensive and compact way to create many of the necessary interconnects between RF components in a subsystem. The interconnects are most often created with stripline and microstrip transmission lines, as well as vertical coaxial transmission lines created with plated through hole patterns.

Read More  

Creating Low Pass High Pass Band Stop Filter Designs

Written by Mark Stanley
Posted on February 8, 2018 at 4:24 PM

A pure notch or band stop filter (also called band reject filter) works by creating a Voltage Standing Wave Ratio (VSWR) resonance over a narrow bandwidth. This creates near total reflection over that bandwidth, while having very little reflection in the surrounding pass bands. By the nature of their creation, these notch filters are typically narrow band. Bandwidth comes linearly with added resonators, increasing size and loss.

Read More  

Electronics Packaging Requires Experience and Investment

Written by Kendall Paradise
Posted on February 2, 2018 at 11:24 AM

When you’re in the process of designing a new product, the last thing you are thinking about is the how the product is going to be packaged for transit. However, failure to prepare for and understand electronics packaging regarding how both your components and your finished unit are going to ship is a costly oversight.

Read More  

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.

Read More  
Subscribe to our blog Subscribe to our blog

Recent Posts



Quote Your PCB's Online

InstantPCBQuote - Online Quote and Ordering Solution for Rigid PCB's

Register today and start to quote and order your circuit boards online, 24/7.

Start Quoting Now

Need Help with A Project?

Request Design Support

Our team of engineers are here to help you with all your product needs.

Request Design Support