Function of the card:
Alloy - Pre Amp No 1 Magnetic Tape
Germanium alloy transistors were an early type of transistor, faster than the earlier grown-junction transistors.
Part number: 371925
Used in: 7030, IBM 7090
Cap code: None (details)
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.