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首頁(yè)晶振技術(shù)技術(shù)資料 福克斯要挑戰(zhàn)開發(fā)枕頭形狀的石英晶體FX425B-16.000

??怂挂魬?zhàn)開發(fā)枕頭形狀的石英晶體FX425B-16.000

來源:http://m.goapplyonline.com 作者:lreus 2023年06月13

??怂挂魬?zhàn)開發(fā)枕頭形狀的石英晶體FX425B-16.000,縱觀石英晶體的發(fā)展歷程已有一百年,經(jīng)過前人用心研制與發(fā)現(xiàn),石英晶體產(chǎn)品對(duì)于我們的生活的方方面面起到不小的作用,隨著深入探究,發(fā)現(xiàn)很多關(guān)于晶體的小秘密,使得如今的晶體發(fā)展極其強(qiáng)大,翻蓋范圍廣泛,而FOX用心研制編碼FX425B-16.000,F(xiàn)Q5032B-14.7456具備良好的穩(wěn)定性能,適合用于各個(gè)領(lǐng)域之中,也包含廣泛智能家居,儀器設(shè)備等領(lǐng)域。用AT切割生產(chǎn)的所有石英晶體都是厚度剪切振蕩器,這對(duì)于進(jìn)一步加工是一個(gè)很大的優(yōu)勢(shì)。石英晶體是無源元件,沒有外部電壓,它們完全沒有用。精細(xì)的電極必須附著在石英上,以激勵(lì)石英并使其振蕩。

??怂挂魬?zhàn)開發(fā)枕頭形狀的石英晶體FX425B-16.000,然而,這些電極的附著被證明是一個(gè)巨大的挑戰(zhàn),這取決于振蕩的類型。理想情況下,電極應(yīng)該附著在石英上的一個(gè)點(diǎn)上,在這個(gè)點(diǎn)上,即使在有電壓的情況下,石英晶振的變形也是最小的。使用厚度剪切振子比使用開頭提到的彎曲或縱向振子要容易得多。
然而,石英的進(jìn)一步加工步驟也是必要的。在一臺(tái)特殊的研磨機(jī)中,坯料被研磨成墊子的形狀——中間稍厚,向外逐漸變細(xì)。石英支架連接到錐形端。以這種方式固定,薄金屬電極最終被蒸發(fā)到坯件的較厚的中間部分上。
因此,AT切割在石英貼片晶振生產(chǎn)中具有雙重功能。首先,它確保在-40到85攝氏度的溫度范圍內(nèi)的高頻率穩(wěn)定性,其次,它將坯料的形狀定義為厚度剪切振蕩器。

原廠編碼 廠家 型號(hào) 系列 頻率 頻率穩(wěn)定度
FQ3225BR-12.000 FOX晶振 FQ3225B MHz Crystal 12MHz ±50ppm
FQ1045AR-6.000 FOX晶振 FQ1045A MHz Crystal 6MHz ±30ppm
FQ1045AR-4.000 FOX晶振 FQ1045A MHz Crystal 4MHz ±30ppm
FQ1045AR-3.6864 FOX晶振 FQ1045A MHz Crystal 3.6864MHz ±30ppm
FOXSLF/0368S FOX晶振 HC49SLF MHz Crystal 3.6864MHz ±50ppm
FOXLF120 FOX晶振 HC49ULF MHz Crystal 12MHz ±50ppm
FOXSDLF/128-20 FOX晶振 HC49SDLF MHz Crystal 12.288MHz ±50ppm
FOXSDLF/081-20 FOX晶振 HC49SDLF MHz Crystal 8.192MHz ±50ppm
FOXSDLF/098-20 FOX晶振 HC49SDLF MHz Crystal 9.8304MHz ±50ppm
FOXSDLF/196-20 FOX晶振 HC49SDLF MHz Crystal 19.6608MHz ±50ppm
FOXSLF/115 FOX晶振 HC49SLF MHz Crystal 11.0592MHz ±50ppm
FOXSLF/200 FOX晶振 HC49SLF MHz Crystal 20MHz ±50ppm
FOXSDLF/0368R-20/TR FOX晶振 HC49SDLF MHz Crystal 3.6864MHz ±50ppm
FOXSDLF/040R/TR FOX晶振 HC49SDLF MHz Crystal 4MHz ±50ppm
FOXSDLF/060R-20/TR FOX晶振 HC49SDLF MHz Crystal 6MHz ±50ppm
FOXSDLF/073R-20/TR FOX晶振 HC49SDLF MHz Crystal 7.3728MHz ±50ppm
FOXSDLF/100R-20/TR FOX晶振 HC49SDLF MHz Crystal 10MHz ±50ppm
FOXSDLF/115R-20/TR FOX晶振 HC49SDLF MHz Crystal 11.0592MHz ±50ppm
FOXSDLF/143R-20/TR FOX晶振 HC49SDLF MHz Crystal 14.31818MHz ±50ppm
FOXSDLF/240FR-20/TR FOX晶振 HC49SDLF MHz Crystal 24MHz ±50ppm
FOXSDLF250F-20 FOX晶振 HC49SDLF MHz Crystal 25MHz ±50ppm
FX252BS-20.000 FOX晶振 FX252B MHz Crystal 20MHz ±50ppm
FQ5032BR-10.000 FOX晶振 C5BQ MHz Crystal 10MHz ±30ppm
FQ5032BR-16.000 FOX晶振 C5BQ MHz Crystal 16MHz ±50ppm
FX532B-10.000 FOX晶振 FX532B MHz Crystal 10MHz ±50ppm
FQ7050B-11.0592 FOX晶振 C7BQ MHz Crystal 11.0592MHz ±30ppm
FX425B-16.000 FOX晶振 FX425B MHz Crystal 16MHz ±50ppm
FQ5032B-19.6608 FOX晶振 C5BQ MHz Crystal 19.6608MHz ±30ppm
FQ5032B-14.7456 FOX晶振 C5BQ MHz Crystal 14.7456MHz ±30ppm
FQ5032B-10.000 FOX晶振 C5BQ MHz Crystal 10MHz ±30ppm
FQ3225B-20.000 FOX晶振 FQ3225B MHz Crystal 20MHz ±50ppm
FQ3225BR-16.000 FOX晶振 FQ3225B MHz Crystal 16MHz ±50ppm
FQ3225BR-20.000 FOX晶振 FQ3225B MHz Crystal 20MHz ±50ppm
FQ1045A-4.9152 FOX晶振 FQ1045A MHz Crystal 4.9152MHz ±30ppm
603-12-67 Fox晶振 FX325BS MHz Crystal 12MHz ±50ppm
617-24.572675-1 FOX晶振 FX216B MHz Crystal 24.572675MHZ ±50ppm
FX532B-11.0592 FOX晶振 FX532B MHz Crystal 11.0592MHz ±50ppm
FX532B-12.000 FOX晶振 FX532B MHz Crystal 12MHz ±50ppm
FX532B-16.000 FOX晶振 FX532B MHz Crystal 16MHz ±50ppm
FX532B-20.000 FOX晶振 FX532B MHz Crystal 20MHz ±50ppm
FX532B-24.000 FOX晶振 FX532B MHz Crystal 24MHz ±50ppm
FX532B-24.576 FOX晶振 FX532B MHz Crystal 24.576MHz ±50ppm
FX425B-20.000 FOX晶振 FX425B MHz Crystal 20MHz ±50ppm
FX425B-24.000 FOX晶振 FX425B MHz Crystal 24MHz ±50ppm
FX425B-24.576 FOX晶振 FX425B MHz Crystal 24.576MHz ±50ppm
217-3.579545-12 FOX晶振 FC MHz Crystal 3.579545MHz ±50ppm
All quartz crystals produced with the AT cut are thickness shear oscillators – a great advantage for further processing. Quartz crystals are passive components, without external voltage they are completely useless. Fine electrodes must be attached to the quartz to energize it and make it oscillate.
The attachment of these electrodes, however, proves to be a great challenge, depending on the type of oscillation. Ideally, the electrodes should be attached to a point on the quartz where it deforms only minimally, even under voltage. This is much easier with a thickness shear oscillator than with the bending or longitudinal oscillators mentioned at the beginning.
Nevertheless, a further processing step of the quartz is also necessary. In a special lapping machine, the blanks are ground until they assume the shape of a cushion – slightly thicker in the middle and tapering outwards. The quartz holder is attached to the tapered ends. Secured in this way, thin metal electrodes are finally evaporated onto the thicker middle section of the blank.
The AT cut thus fulfils a double function in quartz production. First, it ensures high frequency stability in the temperature range from -40 to 85 degrees Celsius and second, it defines the shape of the blank as a thickness shear oscillator.
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