Function of the card:
CTDL NPN Two Way Gate w/ Collector Load
Ctdl npn two way gate w/ coll load
Part number: 370144
Field replacement part number: 370144
PCB number: 493339
Cap code: 2JMX (details)
Image courtesy of Randall Neff
Image courtesy of Henk Stegeman
1401 Pocket Reference Manual
2_2 SMS Cards, p63.
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.