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

Function of the card:
SDTDL-2 Way Logic Block Low Speed with Loads
SDTDL 2 way logic blck low sp w lds
4-2 way-load

Exists in SLT version.

Saturated Drift Transistor Diode Logic (SDTDL) is a form of Diode-transistor logic using faster drift-field transistors.

Part number: 370380

Field replacement part number: 370380

Customer Eng reference number: 729913

PCB number: 484027

Used in: IBM 1311 Disk,IBM 1401,IBM 1443 Printer,IBM 2821 Control Unit,IBM 1410

Transistor type:102

IBM SMS card type DGT 370380 IBM SMS card type DGT 370380 IBM SMS card type DGT 370380 IBM SMS card type DGT 370380 IBM SMS card type DGT 370380 IBM SMS card type DGT 370380

References:
2_2 SMS Cards, p83.
1410_SMS_VOL_1.pdf/1410_SMS_VOL_2.pdf, p1104.
IBM 1311 ILD, p121.
IBM 1443 ALD, p94.
IBM 2821 CCD, p50.
This page created by Ken Shirriff.

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.