Function of the card:
Ctrl-emitter follower pnp
CTRL-Emitter Follower PNP
CE is listed in some sources with part number 371032, which corresponds to CEYB.
Listed in 1401 SMS card usage
Quad Emitter Follower
Part number: 371032
IBM 1620 Instructional System Diagrams, p477
The information on these pages comes from a variety of sources, especially old IBM documents on bitsavers.org, as well as information from the IBM 1401 restoration team, especially Tim Coslet's SMS data and Jim Hunt's data. Much of this information was obtained through OCR, so don't expect complete accuracy. These pages are not associated with IBM in any way.