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

Function of the card:
Alloy-Load Resistor – 40.2Ω 2W
Alloy load resistor
ALLOY LOAD RESISTOR - 40.2 ohm 2 W

Quad Resistor 40.2ohm 2W

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

Part number:371453

Field replacement part number:371453

Customer Eng reference number:729859

Used in:IBM 1401,IBM 1414 I/O Synchronizer,IBM 1620,IBM 1410

Symbol:R

R: Load. Provides proper terminating impedance or optimum coupling of one circuit to another at the correct operating voltage level.

References:
2_2 SMS Cards, p14.
1410_SMS_VOL_1.pdf/1410_SMS_VOL_2.pdf, p2079.
1414 SMS Cards, p60.
IBM 1620 Instructional System Diagrams, p484.

Pinout:

A R1A
B R1B
C R2A
D R2B
E R3A
F R3B
G R4A
H R4B
J
K
L
M
N
P
Q
R

This page created by Ken Shirriff, 2015.

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. Images courtesy of Randall Neff. Much of this information was obtained through OCR, so don't expect complete accuracy. These pages are not associated with IBM in any way.

Creation time: Tue Mar 03 23:40:33 2015.