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

Function of the card:
Alloy diode card

Germanium alloy transistors were an early type of transistor, faster than the earlier grown-junction transistors.

Part number: 370254

PCB number: 484079

Used in: IBM 1410, IBM 1414 I/O Synchronizer

Cap code: None (details)

References: 1410_SMS_VOL_1.pdf, p67

The information on these pages comes from a variety of sources, especially old IBM documents on, 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.