Plug-in flat packs and flat conductor cable (FCC) can be used to make compact, lightweight, external monitoring system requiring minimum of hard wiring. Microelectronic monitoring panel includes replaceable integrated or hybrid circuit flat packs and FCC

Stringer, E. J.

English

NASA Technical Reports Server

B74-10192 
000
O
sFlat Packs
Soft Silicone or
Neoprene Rubber
Seal 
Neoprene or Silicone Seal
Cover 
rew 
November 1974
NASA TECH BRIEF 
•	 Lyndon B. Johnson Space Center
NASA Tech Briefs announce new technology derived from the U.S. space program. They are issued to encourage 
commercial application. Tech Briefs are available on a subscription basis from the National Technical Information 
Service, Springfield, Virginia 22151. Requests for individual copies or questions relating to the Tech Brief program may 
be directed to the Technology Utilization Office, NASA, Code KT, Washington, D.C. 20546. 
Microelectronics Packaging Technique: A Concept 
The problem: 
Many electronic and electrical systems are made up 
of individually housed subsystems (such as amplifiers, 
receivers, or transmitters), which may be located in 
different areas. These are usually joined through mating 
connectors and electrical harnesses. Monitoring adjust-
ments are generally made in each subsystem or on a 
separate patch panel that is connected to all the sub-
FCC (Flat Conductor Cable) 
qlkrc_'^ ^ _AA
systems. Noncentralized monitoring systems are incon-
venient, and a patch panel requires considerable hard 
wiring and heavy harness routing. 
The solution: 
Plug-in flat packs and flat conductor cable (FCC) 
can be used to make a compact, lightweight, external 
monitoring system requiring a minimum of hard wiring. 
Microelectronic 
Monitoring Box 
•	 iiiiirn 
Figure 1. Monitoring Panel With Flat Packs
(continued overleaf) 
This document was prepared under the sponsorship of the National
	
Government assumes any liability resulting from the use of the 
Aeronautics and Space Administration. Neither the United States
	
information contained in this document, or warrants that such use 
Government nor any person acting on behalf of the United States
	
will be free from privately owned rights.
https://ntrs.nasa.gov/search.jsp?R=19740000192 2020-03-17T13:52:29+00:00Z
Insertion Tool 
Interconnections
	 C 
for Flat Packs
Tool
NI
Keyway to Remove Each 
' Flat Pack From Panel 
Separately 
Figure 2. Flat Pack Attachment and Interconnections
. 
How it's done: 
A small microelectronic monitoring panel, including 
replaceable integrated or hybrid circuit flat packs and 
FCC, is shown in Figure 1. All the monitoring adjust-
ments for a fairly large system can be made on this 
single panel. The independent replaceable flat packs 
allow the panel to be repaired or modified easily, and 
the FCC connections to subsystems are lighter and more 
readily handled than conventional wire harnesses. 
The flat packs are protected from vibration and 
moisture by a soft silicone or neoprene rubber cover 
with a moisture seal. The flat packs can be sized and 
shaped to conform with the microelectronic components 
they contain. Using the tool shown in Figure 2, 
individual flat packs may be interconnected or removed 
without disturbing other components of the panel.
Note:	
0 0 
Requests for further information may be directed to: 
Technology Utilization Officer 
Johnson Space Center 
Code AT3 
Houston, Texas 77058 
Reference: TSP74.10192 
Patent status: 
NASA has decided not to apply for a patent. 
Source: E. J. Stringer of 
Rockwell International Corp.
under contract to
Johnson Space Center
(MSC-19399) 
B74-10192	 Category Ol,08


Microelectronics packaging technique: A Concept

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