71991-427LF

Headers, Receptacles, Female Sockets Overview

The 71991-427LF is a rectangular connector receptacle from the Dubox series by Amphenol ICC (FCI). It features 54 positions with a 0.100-inch (2.54mm) mating pitch. The contacts are female sockets plated with tin. Designed for through-hole mounting, this component supports vertical board-to-board or cable connections. It operates within a temperature range of -65°C to +125°C and carries an UL94 V-0 flammability rating for the insulation material.

Headers, Receptacles, Female Sockets Feature Summary

• Dual-entry receptacle design allowing bottom or top contact access
• Push-pull fastening mechanism for secure mating engagement
• Tin-plated female socket contacts for reliable conductivity
• Thermoplastic housing constructed to UL94 V-0 flammability standards

Headers, Receptacles, Female Sockets Applications

• Industrial instrumentation systems
• Factory automation control panels
• Power distribution equipment
• Smart manufacturing IIoT interfaces

Headers, Receptacles, Female Sockets Procurement Notes

Verify the specific pin count and orientation against the official datasheet before procurement. Confirm that the tin plating specification meets the required corrosion resistance for the intended environment. Ensure the push-pull fastening style aligns with the mechanical constraints of the assembly enclosure. Cross-reference the operating temperature range with system thermal profiles to guarantee long-term reliability under load conditions.

Headers, Receptacles, Female Sockets Selection Notes

Select this component when a high-density 54-position interface is required with dual-entry flexibility. The 2.54mm pitch suits standard board layouts while the push-pull feature simplifies assembly labor. Consider the through-hole termination method for robust mechanical anchoring compared to surface mount alternatives. Evaluate the tin contact finish against environmental exposure requirements to ensure adequate performance without gold plating costs.

Headers, Receptacles, Female Sockets Part Context

This part belongs to the Dubox series, which provides versatile interconnect solutions for industrial applications. The 71991 series generally offers shrouded headers and receptacles designed for durability in demanding environments. As an Amphenol ICC product, it integrates into broader connectivity ecosystems supporting heavy equipment, energy generation, and transportation sectors requiring reliable signal and power transmission.

Headers, Receptacles, Female Sockets Replacement Considerations

Compatible substitutes include other 54-position, 2.54mm pitch receptacles with push-pull latching mechanisms. Verify that alternative parts maintain the same female socket contact type and through-hole termination style. Ensure the replacement housing material matches the UL94 V-0 rating and temperature specifications. Check for identical mated stacking heights to prevent clearance issues in the final assembly.