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TYPES 2N4220, 2N4221. 2N4222, 2N4220A, 2N4221A. 2N4222A N-CHANNEL SILICON JUNCTION FIELD-EFFECT TRANSISTORS
B U L L E T IN N O . D L -S 7 0 1 1 3 4 0 , J U L Y 1 9 7 0
N -C H A N N EL F IE L D -E