NPNadj.

Brit.

/ˌɛnpiːˈɛn/, U.S.

/ˌɛnpiˈɛn/

Forms: 1900s– NPN, 1900s– npn, 1900s– n-p-n.

Origin: Formed within English, by compounding. Etymons: n-type adj., p-type adj.

Etymology: < n (in n-type adj.) + p (in p-type adj.) + n (in n-type adj.), after PNP adj.

Electronics.

Designating a semiconductor device in which a p-type region is sandwiched between two n-type regions.

ΘΚΠ

the world > matter > physics > solid state physics > semiconductivity > [adjective] > relating to semiconductor type or region

intrinsic1933

n-type1946

p-type1946

injected1949

PNP1949

NPN1951

1951 W. Shockley et al. in Physical Rev. 83 151/1 The p-n-p transistor has been discussed previously... In this article we shall consider..the n-p-n transistor.

1967 Electronics 6 Mar. 4/2 Transistors Types: PNP and NPN.

1969 J. J. Sparkes Transistor Switching v. 126 Using npn transistors, pulsed R-S flip-flops using three basic types of pulse steering are available.

1987 E. H. J. Pallett Aircraft Electr. Syst. (ed. 3) x. 153/1 The circuit utilizes an NPN transistor which functions as a remotely controlled resistor unit.

This entry has been updated (OED Third Edition, December 2003; most recently modified version published online March 2022).

单词	npn
释义	NPNadj. Brit. /ˌɛnpiːˈɛn/, U.S. /ˌɛnpiˈɛn/ Forms: 1900s– NPN, 1900s– npn, 1900s– n-p-n. Origin: Formed within English, by compounding. Etymons: n-type adj., p-type adj. Etymology: < n (in n-type adj.) + p (in p-type adj.) + n (in n-type adj.), after PNP adj. Electronics. Designating a semiconductor device in which a p-type region is sandwiched between two n-type regions. ΘΚΠ the world > matter > physics > solid state physics > semiconductivity > [adjective] > relating to semiconductor type or region intrinsic1933 n-type1946 p-type1946 injected1949 PNP1949 NPN1951 1951 W. Shockley et al. in Physical Rev. 83 151/1 The p-n-p transistor has been discussed previously... In this article we shall consider..the n-p-n transistor. 1967 Electronics 6 Mar. 4/2 Transistors Types: PNP and NPN. 1969 J. J. Sparkes Transistor Switching v. 126 Using npn transistors, pulsed R-S flip-flops using three basic types of pulse steering are available. 1987 E. H. J. Pallett Aircraft Electr. Syst. (ed. 3) x. 153/1 The circuit utilizes an NPN transistor which functions as a remotely controlled resistor unit. This entry has been updated (OED Third Edition, December 2003; most recently modified version published online March 2022). < adj.1951
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