CI590-CS31-HA ABB

IC3603A277A THERMOCOUPLE AVERAGING MOD IC3603A
IC3603A277C THERMOCOUPLE AVERAGING MOD
IC3603A278A THERMOCOUPLE AVERAGING MOD
IC3603A278B THERM PROCESS MOD
IC3603A278E THERMOCOUPLE PROCESSOR ASM
IC3603A279A THERMOCOUPLE MO
IC3603A280A HEAT SINK ASSY
IC3603A280B SUBCOMPONENT OF IC3603A282C
IC3603A281 HEAT SINK ASM
IC3603A281-1 SUBCOMPONENT OF ICA

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描述

在正向大偏置下半导体PN结结区附近将注入大量非平衡载流子,利用复合发光效应可制成各种颜色发光二极管。电子仪表上普遍使用的红、绿色半导体指示灯、数码管,就是用GaAsP、GaP、AlGaAs等材料制成的。固态发光管功耗低、体积小、寿命长,已逐步取代真空管。用GaAs制成的发光管,发光效率很高,发射波长约9000埃,属人眼不灵敏的近红外波段,广泛用作光电控制和早期光通信的光源。第一只半导体激光器就是用高掺杂GaAs的PN结制成的,虽然现代半导体激光器已被异质结器件所取代,但基本上仍属正向结结构。

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