Download the RCA1001 datasheet PDF.
This datasheet also includes the RCA1000 variant, as both parts are published together in a single manufacturer document.
High de current gain: hFE = 1000 min_ at IC = 3 A.
Monolithic construction with built-in bas8e smitter shunt resistors
RCA-l000 and 1001 are monolithic silicon n-p-n Darlington transistors intended for medium-power.