Boundary Scan
A self-test designed into components at the silicon level, permitting testing via a built-in, four-or-five-pin test bus&...
Border Data
Patterns that appear in the border area, such as tooling features, test patterns and registration marks.
Bonding Time
The duration from hot-bar-heat-up (contact with lead and pad ) until the solder joint is completed.
Bonding Layer
An adhesive layer used in bonding together other discrete layers of multi-layer printed board during lamination.
Bond Strength:
The force perpendicular to a board’s surface required to separate two adjacent layers of the board, expressed as&nb...
Bond Lift-off
A failure condition in which a lead is separated from its bonding surface.
Bond Interface
The common area between a lead and a land to which it has been terminated.
Board Thickness
The overall thickness of the base material and all conductive materials deposited thereon.
Board Density
A measure of the ratio of the area of the board used by parts to the total available area of the&nbs...
Blutter Coat
An external layer of resin over the reinforcing structure of base material.
Bluetooth
Bluetooth is a short-range (up to 10m) 2.4GHz wireless connectivity standard intended for such applications as wireless&...
Blow Hole
A void in the solder fillet caused by outgassing from the barrel of a plated through hole.(see also outgassing...
Blistering
A localized swelling and separation between any of the layers of a laminated base material, or between base ma...
Blister
De-lamination in the form of a localized swelling and separation between any of the Layers of a lamination bas...
Blind Via
A via that reaches only one layer beneath the outer layer on one side of a muti-layer board.
Bleeding
A condition in which liquid solder resist or rotation spreads larger than the defined apperture.
BGA
Ball Grid Array. Leadless array packaging technology in which solder balls are mounted to the underside of the ...
Bellows Contact
A connector contact which is a flat sprint folded to provide a uniform spring rate over the full tolerance ran...
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