399-91-042-21-300000

Headers, Receptacles, Female Sockets Overview

The Mill-Max 399-91-042-21-300000 is a spring-loaded PCB target connector designed for mating with pogo pins. It features 42 contacts arranged in two rows with a 0.100-inch (2.54mm) pitch. The component utilizes gold-plated brass alloy contacts and supports through-hole mounting. It is rated for operation between -55°C and 125°C, providing reliable interconnection for high-cycle applications.

Headers, Receptacles, Female Sockets Feature Summary

• Spring-loaded contact mechanism ensures consistent electrical connection during mating cycles
• Gold-plated contacts provide corrosion resistance and low contact impedance
• Dual-row configuration accommodates higher density connections within standard spacing

Headers, Receptacles, Female Sockets Applications

• Board-to-board testing fixtures
• Burn-in sockets for semiconductor devices
• High-reliability industrial interconnects

Headers, Receptacles, Female Sockets Procurement Notes

Verify the specific contact count and row configuration against the official datasheet to ensure compatibility with the mating pogo pin array. Confirm that the through-hole termination method aligns with the target PCB fabrication capabilities and soldering processes.

Headers, Receptacles, Female Sockets Selection Notes

Select this component when a durable, high-cycle spring target is required for automated testing or permanent interconnect solutions. Ensure the mating device provides sufficient force to compress the springs without exceeding mechanical limits. Validate thermal and current ratings against the application requirements.

Headers, Receptacles, Female Sockets Part Context

This part belongs to the Mill-Max 399 series of spring targets, which are precision-machined interconnect components. The series is designed for high reliability and long life in demanding electronic environments, serving as the stationary counterpart to moving pogo pin assemblies.

Headers, Receptacles, Female Sockets Replacement Considerations

Consult the Mill-Max cross-reference tool for parametrically similar parts. Verify that any substitute matches the 0.100-inch pitch, contact count, and mounting style to maintain mechanical and electrical integrity.