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mister_rf

Dispozitive şi componente electronice - macrofotografii

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16.  ACY21

Tranzistor PNP  cu germaniu, utilizat ca amplificator  AF sau comutator.

Este realizat printr-o  tehnologie de aliere,   Punctul de plecare il constituie o placuta dintr-un monocristal de germaniu dotat cu impuritati de tip n. De o parte si de alta a placutei se fixeaza cate o bila de indiu, care pentru germaniu este o impuritate de tip p. Ansamblu se incalzeste la temperatura de topire a indiului. Indiul patrunde in reteaua cristalina a semiconductorului astfel incat dupa racire sub bilele de indiu apar zone de tip p. Perla care formeaza colectorul este mai mare decat cea a emitorului si mai slab dotata.

ACY21.jpg

Edited by mister_rf
typo

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18.  СВЧ Д401

  Detaliu pentru o dioda ruseasca de detectie cu germaniu, uitilizata pana la frecvente de ordinul GHz.

%D0%A1%D0%92%D0%A7_%D0%94401.png

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19. AF 106

Un tranzistor cu germaniu de înaltă frecvenţă

TO-72, 220MHz, TO18, 18V, 10mA

AF_106.jpg

AF_106_die.jpg

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20.  2T812A

NPN, 700V, 10A, 50W Silicon Power Transistor

 

2T812A.jpg

 

2T812A_die.jpg

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