- 型号搜索
- 交叉搜索
- 关键词搜索
- 参数搜索
- 库存查询与购买
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
什么是pn结?
下载“第Ⅰ章：半导体基础” (PDF:894KB)
p型和n型半导体之间的接触面即称为PN结。
p型和n型半导体键合时，作为载流子的空穴和自由电子相互吸引、束缚并在边界附近消失。由于在这个区域没有载流子，所以它被称为耗尽层，与绝缘体的状态相同。
在这种状态下，将“＋”极连接到p型区，将“-”极连接到n型区，并施加电压使得电子从n型区顺序流动到p型区。电子首先会与空穴结合而消失，但多余的电子会移动到“＋”极，这样就产生了电流流动。
