Technology Corner

What causes pad lifting on printed circuit boards?

If the pads are not sitting correctly or are lifted, it can cause the connection between the PCB and the component to fail.

Lifted pad occurred during handling, right after wave soldering

Read the blog post here →

Common PCB Fabrication Problems: Plating Voids

Plating voids in plated through holes happen when, during the deposition process, copper is not coated evenly, preventing proper plating.

Copper voids on the inside of a plated through hole

Read the full blog post here →

Surface Finishes: Why do I need to know more?

The printed circuit board surface finish forms a critical interface between the component to be assembled and the bare PCB.

Download our Surface Finishes Presentation →

Wave Soldering Defects

Wave soldering is a large-scale soldering process by which electronic components are soldered to a printed circuit board (PCB) to form an electronic assembly.

Printed Circuit Board Wave Soldering Defects

Learn how to minimize Wave Soldering Defects →

Controlled Impedance: Why do I need to know more?

Every circuit on a PCB has impedance. The goal is to control the impedance.

Download our Controlled Impedance Presentation →

Epec's recommended V-Cut

Below is a diagram which describes the recommended dimensions for V-Cut.

Epec recommended V-Cut for Printed Circuit Boards

Click here to see the full size PDF →

See our blog post on v-scoring of printed circuit boards in arrays for more information.


The following document was designed to answer some of the more common questions surrounding RoHS. However, if, after reading, you still have questions, please contact one of the knowledgeable members of our Engineering Team.

Read more about our RoHS Compliance and RoHS FAQ →

RoHS Compliant Product Manufacturer

Minimum PCB Data/Information Requirements to Place Order

The purpose of this document is to describe the minimum data and information required by Epec Engineering to generate the tooling.

Read more about our PCB Data Requirements →

Staining of Solder Mask

Learn some of the issues surrounding Solder Mask Staining as well as some of the causes and remedies.

Click below to view pictures of this particular board defect:

  • Staining of Solder Mask
  • Staining of Solder Mask
  • Staining of Solder Mask
  • Staining of Solder Mask
  • Staining of Solder Mask

Learn more about Solder Mask Design Basics →

Celebrating 65 Years of Manufacturing Excellence  Learn More →
America's Oldest. A History of Innovation.

Today at Epec, the customer comes first, and everything we do must be put through that filter. Whether it is developing e-commerce platforms to make it easier to work with us, or creating a NPI (new product introduction) process that helps our customers get to market faster, or the other 10 new projects we have in process, we must focus on building the new. By doing that every day, and by always making the customer our top priority, we plan on being here for another 65 years and then some.

Learn more about our 65 year story →

Celebrating 65 Years - Epec Engineered Technologies