Amphenol ICC 51731-002 Backplane Connector - Equivalent & Substitute Parts

Part Overview

The Amphenol ICC 51731-002 is a 46-position backplane connector header featuring male pins and blades configured for blade power applications. This connector is designed for board edge, through-hole, right-angle mounting with solder termination. The part is currently classified as obsolete, which necessitates identification of active equivalent components to maintain supply chain continuity and support ongoing system requirements.

Substiute Parts

51731-002

Amphenol ICC (FCI)In Stock: 99351731-002 Datasheet

Current PartRFQ

51731-002LF

Amphenol ICC (FCI)In Stock: 110151731-002LF Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 51731-002 is determined by strict equivalence across the following critical parameters:

• Connector type and style (Header, Male Pins and Blades; Blade Power)
• Position count and arrangement (46 positions, 4 rows)
• Pitch specification (0.100" / 2.54mm)
• Mounting configuration (Board Edge, Through Hole, Right Angle)
• Termination method (Solder)
• Contact layout distribution (32 Signal, 14 Power)
• Contact finish specification (Gold or Gold, GXT™)
• Flammability rating (UL94 V-0)
• Operating temperature range (-20°C ~ 105°C)

The substitute part 51731-002LF meets all these criteria while offering active product status and improved compliance characteristics.

Parameter Comparison

Engineering Selection Recommendations

The 51731-002LF is the direct functional equivalent of the 51731-002. Both parts share identical electrical and mechanical specifications within the PwrBlade® series. The primary distinction lies in product lifecycle status and regulatory compliance.

The 51731-002 is classified as obsolete, indicating discontinued manufacturing and limited availability. The 51731-002LF maintains active product status with confirmed inventory availability, ensuring reliable procurement for new designs and ongoing production requirements.

The 51731-002LF additionally provides RoHS compliance and REACH affected status, meeting current regulatory requirements for electronic components in regulated markets. These compliance improvements represent a forward-compatible transition path from the obsolete variant.

Frequently Asked Questions (FAQ)

Q: Are the 51731-002 and 51731-002LF mechanically interchangeable?

A: Yes. Both connectors share identical mechanical specifications: 46 positions, 0.100" pitch, 4-row configuration, board edge through-hole right-angle mounting, and solder termination. PCB footprints and mating interfaces are identical.

Q: What is the functional difference between these parts?

A: There is no functional difference. Both parts provide identical electrical performance with 32 signal and 14 power contact positions, gold contact finish at 30.0µin thickness, and UL94 V-0 flammability rating across the -20°C to 105°C operating range.

Q: Why should I transition from 51731-002 to 51731-002LF?

A: The 51731-002 is obsolete with limited remaining inventory. The 51731-002LF is an active product with confirmed supply availability. Additionally, the 51731-002LF provides RoHS compliance, meeting current regulatory standards for component procurement.

Q: Are there packaging differences between these parts?

A: The 51731-002 packaging specification is not provided. The 51731-002LF is supplied in Tray packaging. Confirm packaging requirements with your procurement specifications.

Q: Can I use 51731-002LF as a drop-in replacement in existing designs?

A: Yes. The 51731-002LF is a direct substitute with identical electrical and mechanical characteristics. No design modifications are required for component substitution.