SEMATECH Dictionary of Semiconductor Terms
A-Am | An-Az | B | C-Ch | Ci-Com | Con-Cz | D-De | Df-Dz | E-En | Eo-Ez | F-Fl
Fm-Fz | G | H | I | J-K | L | M-Mes | Met-Mz | N | O | P-Ph | Pi-Pq | Pr-Pz | Q | R
S-Se | Sh-So | Sp-Sta | Ste-Sz | T-Th | Ti-Tz | U-V | W-Z
"Q"
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QUAD flat pack (QFP) n  |
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a plastic or ceramic package that has leads that project down and away from all four sides of a square package, typically with gull wing lead configuration. [SEMATECH] |
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qualification methodology n |
the standard manufacturing method developed by SEMATECH for rigorously characterizing and burning in tools before they are released for production. There are two levels of qualification. [SEMATECH] Also see Level 1 qualification and Level 2 qualification. |
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qualification tests n |
for fluid or gas distribution systems, extensive, closely controlled tests that completely analyze the characteristics of a component. These tests are performed to qualify a component for use in a high-purity installation. [SEMATECH] |
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| quality area n |
1 : that portion of a surface within which specified parameter values apply. [SEMI P5-86] 2 : in flat panel display substrates, the center area of the substrate where specified substrate quality criteria (with regard to scratch, flatness, stain, bubble, and stone) are applicable. [SEMI D9-94] |
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| quantum device n |
an electronic device structure, the properties of which derive from the wave nature of electrons. [1994 National Technology Roadmap for Semiconductors] |
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| quartz (SiO2) |
see silicon dioxide. |
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| quartz carrier n |
a supporting structure that holds substrates during high-temperature operation. [SEMATECH] Also called boat. |
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| quartzware n |
containers made from amorphous material, which is resistant to high temperature. Examples are the furnace tube and the quartz carrier. [SEMATECH] |
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| queue n |
a waiting line; for example, of materials or of data to be processed. [SEMATECH] |
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| queue time n |
the maximum time allowed by specifications to transpire between two sequential operations. The time in queue may be called out by specification. [SEMATECH] |
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quiet zone n |
in the bar code marking of silicon wafers, a clear space of consistent background and characteristics that precedes the start character of a symbol and follows the stop character. [SEMI T1-93] |
A-Am | An-Az | B | C-Ch | Ci-Com | Con-Cz | D-De | Df-Dz | E-En | Eo-Ez | F-Fl
Fm-Fz | G | H | I | J-K | L | M-Mes | Met-Mz | N | O | P-Ph | Pi-Pq | Pr-Pz | Q | R
S-Se | Sh-So | Sp-Sta | Ste-Sz | T-Th | Ti-Tz | U-V | W-Z