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gull-wing lead
(redirected from gullwing lead)

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gull-wing lead
A pin on a chip package that extends slightly out, down and then out again. Gull-wing leads are used on surface mount chips such as QFPs and SOICs. See surface mount, QFP, SOIC and J-lead.

Gull-Wing Leads
These are examples of the common gull-wing style of leads on surface mount chips. The leads extend slightly out, then down and out again.
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While it has been observed on fine-pitch QFPs, the gullwing lead has more resilience and resistance to stress than the C-5 and C-4 attachment types.
Black pad--a scourge on your boards: the potential failure mechanism ... by Zarrow, Phil / Circuits Assembly
Unlike standard leaded packages, AIT's DFN and DFN+ packages eliminate gullwing leads, which can act as noise-creating antennas in high-frequency applications and often cause mechanical defects due to lead coplanarity.
Advanced Interconnect Technologies Extends Line of Lead-Frame ... by Business Wire
004" offset may be noticeable on gullwing leads, but could likely go undetected on chip components.
The disappearing defects: compensating for PWB positional ... by Shea, Chrys / Circuits Assembly
 
 
 
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