M3933/25-74N

Overview

The M3933/25-74N is a circular connector receptacle manufactured by Amphenol SV Microwave. It features a MIL-DTL-38999 Series III shell style with a size 25 coupling nut and insert arrangement. The component utilizes a solder termination method for contact attachment, ensuring secure electrical connections within high-reliability environments. Constructed with a cadmium-chromate plated aluminum alloy shell, it provides robust mechanical protection and corrosion resistance suitable for demanding aerospace and defense applications.

Feature Summary

• MIL-DTL-38999 Series III compliant circular connector design
• Solder termination interface for reliable contact attachment
• Cadmium-chromate plated aluminum alloy shell construction

Applications

• Aerospace avionics systems
• Defense communication equipment
• Military radar installations

Procurement Notes

Verify the specific contact configuration and plating requirements against the project specifications before procurement. Ensure that the ordering suffix matches the exact shell size, insert arrangement, and mounting type required for the assembly. Confirm environmental sealing capabilities if the application involves exposure to moisture or harsh conditions. Cross-reference the datasheet to validate compatibility with mating connectors.

Selection Notes

Select this component based on the need for a high-density interconnect solution within a compact form factor. Consider the operating temperature range and vibration resistance requirements of the target system. Evaluate the available contact types and quantities to ensure sufficient signal and power routing capacity. Assess the mechanical mounting constraints to determine if the receptacle orientation fits the panel layout.

Part Context

This part belongs to the MIL-DTL-38999 family of circular connectors, widely used in military and aerospace sectors. It represents a third-generation series offering improved performance over earlier models. The designation indicates a specific variant within the broader standard, defined by its shell size and contact arrangement. These connectors are known for their durability and standardized interfaces across various platforms.

Replacement Considerations

Compatible substitutes include other manufacturers' MIL-DTL-38999 Series III receptacles with identical shell size 25 and matching insert arrangements. Verify dimensional interchangeability and electrical continuity before substitution. Ensure that any alternative part meets the same environmental and mechanical standards as the original specification.