Tyco Electronics Corporation
300 Constitutional Drive
Menlo Park, CA 94025 USA
No: C-6111
Rev: G
Date: November 5, 1993
Page: 6 of 35
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3.4.1 Dissimilar Metals. When dissimilar metals are used in intimate contact with each
other, protection against electrolytic corrosion shall be provided as specified in MIL-
STD-454, Requirement 16.
3.4.2 Fungus Resistance. Finishes and materials shall be fungus-inert in accordance with
MIL-STD-454, Requirement 4, and encompassing the fungus species listed in MIL-
STD-810, Method 508.
3.4.3 Hydrolytic Stability. All nonmetallic materials shall be selected to meet the hydrolytic
reversion resistance requirements specified in MIL-STD-454, Requirement 47.
3.4.4 Vacuum Stability. Connector assemblies shall meet the vacuum stability requirements
of NASA Specification SP-R-0022A.
3.4.5 Component Materials. Materials for specific components of the connector shall be as
follows:
3.4.5.1 Contacts. Contact material shall be copper-based alloy per QQ-B-613, QQ-B-750, or
QQ-C-530. Mating surfaces shall be gold-plated per MIL-G- 45204, Type 1, Grade C,
Class 1, over a suitable underplate. Silver underplate shall not be used. Solder
termination areas shall be of a quality, which will ensure reliable performance in
conjunction with the appropriate SolderSleeve® termination device.
3.4.5.2 Solder. Solder shall be Sn63, Sn96 or Sb5 per QQ-S-571 and applicable specification
sheet.
3.4.5.3 Connector Shell.
Connector shells shall be die-cast aluminum per QQ-A-591. Shell
finish shall be in accordance with 3.4.5.3.1, 3.4.5.3.2 or 3.4.5.3.3.
3.4.5.3.1 Anodic Finish.
Anodic (nonconductive) shell finish shall be black, hard and in
accordance with MIL-A-8625, Type II, Class 2.
3.4.5.3.2 Electroless Nickel.
Electroless nickel (conductive) shell conductive finish shall be in
accordance with MIL-C-26074 Class 3 or 4, Grade B.
3.4.5.3.3 Cadmium Plating. Cadmium plating (conductive) shell finish shall be olive drab to
yellow and in accordance with QQ-P-416 over a suitable underplate to withstand the
500-hour salt spray test.