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heterojunction bipolar transistor |
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heterojunction bipolar transistor [¦hed·ə·rə‚jəŋk·shən ′bī‚pōl·ər tran‚zis·tər] (electronics) A bipolar transistor that has two or more materials making up the emitter, base, and collector regions, giving it a much higher maximum frequency than a silicon bipolar transistor. Abbreviated HBT. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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They revealed then that a type of superfast, high-current transistor known as a heterojunction bipolar transistor can emit useful amounts of infrared light. The divide-by-2 and divide-by-4 circuits were designed by BAE Systems and manufactured in Vitesse's second generation Indium Phosphide Heterojunction Bipolar Transistor process (VIP-2(TM)). NASDAQ: KOPN), the world's leading provider of heterojunction bipolar transistor (HBT) wafers for cellular phones and mobile communications devices, today announced that Kopin and AIXTRON AG (NASDAQ: AIXG) have completed a new multi-year purchase and supply agreement for AIXTRON's latest high-volume MOCVD (metal organic chemical vapor deposition) systems. |
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