What is a Flying Probe? A flying probe is a testing device that uses multiple moving pins to make contact with two spots on the electrical circuit and send a signal between them, a procedure that determines whether faults Read More
What is the First Article? The first article is a sample part or assembly manufactured prior to the start of production for the purpose of ensuring that the manufacturer is capable of producing a product that will meet speci Read More
What is Finished Copper? This is how much copper your board will have on its surface. It is the copper foil thickness, plus plated copper, minus surface preparation. It is given in oz / per sq foot. 1 oz = a minimum of 0.0 Read More
Files: Gerber Our Industry standard format for files used to generate artwork necessary for circuit board imaging. MCL’s preferred Gerber format is 274X, which embeds the apertures within the specific files (s Read More
What is a Fiducial Mark? Fiducial marks are dots etched on board panel for which SMT assembly is required (provide viewing targets for camera to locate correct position). These marks should be in diameter of approx. 0.06†Read More
What is a Feed-Thru (Via)? Feed-thru via is a plated through hole in a Printed Circuit Board that is used to provide electrical connection between a trace on one side of the Printed Circuit Board to a trace on the other side Read More
What is an Excellon Drill File? An excellon drill file is a type of drill file that MCL will accept. Read More
What is Etching? Etching is the chemical, or chemical and electrolytic, removal of unwanted portions of conductive materials. Read More
What is an Etchback? An etchback is the controlled removal of all components of the base material by a chemical process acting on the sidewalls of plated-through holes to expose additional internal conductor areas. Read More
