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LDD implants on BJT are blocked?

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kapilsn

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Would like to know the specific reason behind blocking LDD impants during a BJT construction in latest technology.
 

kapilsn said:
Would like to know the specific reason behind blocking LDD impants during a BJT construction in latest technology.
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If LDD would be used at the emitter side, it would deteriorate the emitter efficiency. At the collector side of a lateral BJT, it would kill its Beta.
 

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    kapilsn

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Plus you don't actually -have- a drain, so no need to lightly
dope it.
 

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