This page describes the IBM SMS card "YHM", and is part of the SMS card database.

Function of the card:
Resistor and Suppressor

Listed in 1401 SMS card usage

Part number: 370701

Used in: IBM 729V

Cap code: None (details)

IBM SMS card type YHM 370701 IBM SMS card type YHM 370701

Image courtesy of Henk Stegeman

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.