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

Function of the card:
Alloy - functional coil driver - 750 ma
Alloy-functional coil driver-750 ma

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

Part number: 370126

PCB number: 747617

Used in: IBM 1410, IBM 1414 I/O Synchronizer, 7030

Cap code: None (details)

IBM SMS card type ABN 370126 IBM SMS card type ABN 370126

References: 1410_SMS_VOL_1.pdf, p10

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.