An electronic component especially a p-channel or n-channel permeable base transistor (PBT) is provided as a plurality of layers, fabricated in a laminated composite, and with at least one laterally structured layer provided for controlling a space charge zone, especially a base of the electronic co...http://www.google.com.au/patents/US5541424?utm_source=gb-gplus-sharePatent US5541424 - Permeable base transistor having laminated layers
