This webpage doesn't work with Internet Explorer. Please use the latest version of Google Chrome, Microsoft Edge, Mozilla Firefox or Safari.
请输入3个以上字符
The information presented in this cross reference is based on TOSHIBA's selection criteria and should be treated as a suggestion only. Please carefully review the latest versions of all relevant information on the TOSHIBA products, including without limitation data sheets and validate all operating parameters of the TOSHIBA products to ensure that the suggested TOSHIBA products are truly compatible with your design and application.
Please note that this cross reference is based on TOSHIBA's estimate of compatibility with other manufacturers' products, based on other manufacturers' published data, at the time the data was collected.
TOSHIBA is not responsible for any incorrect or incomplete information. Information is subject to change at any time without notice.
请输入3个以上字符
下载“第Ⅱ章:二极管” (PDF:895KB)
可变电容二极管是利用耗尽层电容特性的产品。当施加反向电压时,耗尽层出现在二极管的pn结中,其厚度与反向电压成正比。
因此,随着反向电压的增加,耗尽层厚度增加,但电容减小。其作用与增加电容器两个电极之间的距离相同。相反,如果反向电压减小,耗尽层厚度减小,但电容增加。
它应用于调谐电路等。由于这种电容变化会改变频率特性,因此与普通二极管相比,需要较大的电容变化率。
可变电容二极管与一般二极管不同,其重要特性不是正向电压VF和开关特性,而是电容值及其变化(取决于电压)。