399-91-018-21-300000

Headers, Receptacles, Female Sockets Overview

The Mill-Max 399-91-018-21-300000 is a spring-loaded test probe connector designed for board-to-board or board-to-cable interconnections. It features an angled header configuration with eighteen positions arranged in a single row. The component utilizes a 0.100-inch (2.54mm) pitch to ensure compatibility with standard PCB layouts. Constructed from brass alloy, the contacts are finished with gold plating to maintain signal integrity and corrosion resistance. The unit supports through-hole mounting and operates within a temperature range of -55°C to 125°C, providing reliable electrical connections for automated testing environments.

Headers, Receptacles, Female Sockets Feature Summary

• Spring-loaded pogo pin mechanism ensures consistent contact pressure during mating cycles
• Gold-plated brass alloy contacts provide durable conductivity and oxidation resistance
• Angled right-angle design facilitates compact vertical integration on printed circuit boards

Headers, Receptacles, Female Sockets Applications

• Automated In-Circuit Testing (ICT) fixtures
• Burn-in board connections
• Production test jigs
• Board-to-board interface verification

Headers, Receptacles, Female Sockets Procurement Notes

Verify that the specific ordering suffix matches the required contact length and tip style for your application. Confirm RoHS compliance status as some variants may differ. Ensure the supplier provides official Mill-Max documentation to validate part authenticity. Check for any lead-free restrictions if operating in regulated regions. Cross-reference the datasheet for precise mechanical dimensions before finalizing procurement orders.

Headers, Receptacles, Female Sockets Selection Notes

Select this model when a single-row, right-angle spring contact is required for high-cycle testing applications. Evaluate the operating force and travel distance specifications against the mating device requirements. Consider the gold plating thickness for long-term reliability in corrosive environments. Compare the overall height constraints with available board space. Verify that the 2.54mm pitch aligns with the target PCB footprint design.

Headers, Receptacles, Female Sockets Part Context

This component belongs to the Mill-Max 399 series, which specializes in individual spring-loaded contacts and test probes. The series is engineered for rigorous electronic testing environments requiring high durability and repeatable performance. Mill-Max Manufacturing Corp. produces these components using precision machining techniques to ensure tight tolerances and consistent electrical characteristics across production batches.

Headers, Receptacles, Female Sockets Replacement Considerations

Direct substitutes must match the 18-position count, 2.54mm pitch, and right-angle orientation. Verify identical contact material and plating specifications to maintain electrical performance. Ensure the replacement part supports the same operating temperature range and current ratings. Consult Mill-Max engineering for cross-reference recommendations if exact matches are unavailable.