Development of hermetic microminiature connectors
Miniaturization of hermetic packages has provided the incentive to develop a new family of hermetic microminiature connectors. Microminiature connectors, with a pin spacing of 1.27 mm, have previously been available only in the non-hermetic form. New microminiature connectors with compression seal materials, 304 Stainless Steel housings, Alloy 52 pins, and TM-9 Glass insulators, were examined because compression seals are currently used in larger hermetic connectors and are typically designed to create a residual compressive stress state in the insulator during manufacture. The new microminiature connectors with compression seals were evaluated analytically with two- and three-dimensional finite element models and experimentally by fabrication of prototype connectors. The finite element analyses predicted the development of undesirable tensile stress in the insulator during manufacture and identified the mechanism responsible for the generation of tensile stress in the glass. The experimental investigation confirmed the existence of desirable tensile stress in the glass with the observation of crack development during manufacture. Since the design requirements would not allow the geometric modifications needed to manufacture crack-free connectors with compression seals, insulator materials that generate a matched seal with 304 Stainless Steel housings were developed. Connectors with these matched seals were successfully manufactured. 5 refs., 11 figs., 1 tab.
- Research Organization:
- Sandia National Labs., Albuquerque, NM (USA)
- Sponsoring Organization:
- DOE/DP
- DOE Contract Number:
- AC04-76DP00789
- OSTI ID:
- 6611304
- Report Number(s):
- SAND-90-0650C; CONF-901109-16; ON: DE90015562
- Resource Relation:
- Conference: International symposium on gas-liquid two-phase flows in conjunction with the winter annual meeting of the American Society of Mechanical Engineers, Dallas, TX (USA), 25-30 Nov 1990
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
CONNECTORS
MINIATURIZATION
ELECTRONIC CIRCUITS
PACKAGING
ALLOYS
COMPUTER GRAPHICS
DIMENSIONS
ELECTRIC CONTACTS
ELECTRICAL INSULATORS
FABRICATION
FINITE ELEMENT METHOD
GLASS
SEALS
STAINLESS STEEL-304
STRESSES
TEMPERATURE EFFECTS
AUSTENITIC STEELS
CHROMIUM ALLOYS
CHROMIUM-NICKEL STEELS
CONDUCTOR DEVICES
CORROSION RESISTANT ALLOYS
ELECTRICAL EQUIPMENT
EQUIPMENT
HEAT RESISTANT MATERIALS
HEAT RESISTING ALLOYS
HIGH ALLOY STEELS
IRON ALLOYS
IRON BASE ALLOYS
MATERIALS
NICKEL ALLOYS
NUMERICAL SOLUTION
STAINLESS STEELS
STEEL-CR19NI10
STEELS
426000* - Engineering- Components
Electron Devices & Circuits- (1990-)
360103 - Metals & Alloys- Mechanical Properties
360603 - Materials- Properties