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About product and suppliers:
        Alibaba.com offers 29,323 npn transistor products. About 21% of these are transistors, 1% are thyristors. 

A wide variety of npn transistor options are available to you, such as field-effect transistor, triode transistor, and bipolar junction transistor. You can also choose from throught hole, surface mount. 

There are 29,308 npn transistor suppliers, mainly located in Asia. The top supplying countries are China (Mainland), Turkey, and Hong Kong, which supply 99%, 1%, and 1% of npn transistor respectively. 

Npn transistor products are most popular in Southeast Asia, Eastern Europe, and North America. 

You can ensure product safety by selecting from certified suppliers, including 3,245 with ISO9001, 771 with Other, and 563 with ISO14001 certification.