MIL-C-39029/AS39029 Series Contacts

MIL-C-39029/AS39029 electrical contacts are designed for harsh environments, meeting strict military specifications. These Mil-Spec contacts are suitable for connectors used in a wide range of applications, including military and commercial aerospace, satellite, telecom, navigation, avionics and oil and gas exploration.

Contact Design: The contact is composed of three distinct parts, each made from different materials to optimize performance and manufacturing:

• Contact body: Machined brass
• Clip insert: Precision-stamped beryllium-copper
• Protection hood: Deep-drawn stainless steel

Each part undergoes a separate electroplating process to achieve an optimal cost-performance ratio (localized finish). The final assembly is fully automated. Reversed clip contacts are available in sizes 12, 16, 20, and 22.

Advantages and Characteristics: Compared to slotted contact designs, these clips offer several benefits:

• More consistent insertion and extraction forces
• Less variation in force values
• Greater contact redundancy with 6 or 8 contact fingers

Additionally, precision-machined pin contacts are available. All contacts meet AS39029 qualification standards and are QPL listed.

Technical Specifications:

• Operating temperature range:
  • Class A: -65°C to +125°C
  • Class B: -65°C to +200°C

Materials & Plating:

Pin Contact:

• Material: Machined brass (ASTM B121/B121M)
• Finish:
  • Overall: Gold-plated (ASTM B488, Type II, Code C, min. 1.27 µm), over 2.5 µm nickel (AMS-QQ-N-290, Class 2)
  • Localized: Contact area gold-plated (ASTM B488, Type II, Code C, min. 1.27 µm), over 2.5 µm nickel (AMS-QQ-N-290, Class 2)

Socket Contact:

• Sleeve: Machined brass (ASTM B121/B121M), gold-plated (ASTM B488, Type II, Code C), over 2.5 µm nickel (AMS-QQ-N-290, Class 2)
• Reversed Clip: Beryllium-copper (ASTM B194), gold-plated (ASTM B488, Type II, Code C, min. 1.27 µm), over 2.5 µm nickel (AMS-QQ-N-290, Class 2)
• Hood: Corrosion-resistant steel