Function of the card:
SDTDL sdtrl 960 kc oscillator
SDTDL-sdtrl-960kc crystal oscillator
Saturated Drift Transistor Diode Logic (SDTDL) is a form of Diode-transistor logic using faster drift-field transistors.
Saturated Drift Transistor Resistor Logic (SDTRL) is a form of resistor-transistor logic using faster drift-field transistors.
Part number:370818
Field replacement part number:370818
1_2 SMS Cards, p9.
1410_SMS_VOL_1.pdf/1410_SMS_VOL_2.pdf, p2033.
This page created by Ken Shirriff, 2015.
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. Images courtesy of Randall Neff. Much of this information was obtained through OCR, so don't expect complete accuracy. These pages are not associated with IBM in any way.
Creation time: Tue Mar 03 23:40:34 2015.