Artifact Details


SDS SX54 regulator threshold module

Catalog Number



Physical object


Scientific Data Systems (SDS)

Identifying Numbers

Model number SX54 Printed in black ink at the top of the extraction handle.
Other number 107894B Stamped in black ink on the circuit side of the module.
Serial number 381310 Printed vertically in black ink on the extraction handle of the module.


overall: 6 in x 7/8 in x 5 5/8 in


This module is a PCB intended to be inserted in a card cage. There is an extraction handle attached to the front of the card, on which a paper label containing the model number, serial number, and other information is printed.

Opposite the handle there are 47 bifurcated gold-plated contacts arranged in two rows. Mounted on the component side of the PCB are the active and passive components, consisting of two transistors, diodes, resistors, capacitors, and a jumper. One of the transistors has a circular heat sink snapped onto it, and the other is a power transistor mounted in a black anodized heat sink.

The card has various quality control stamps on one or both sides of the PCB.




Gift of National Oceanic and Atmospheric Administration (NOAA)

Lot Number