Amphenol ICC 51923-005 Backplane Connector Equivalent & Substitute Parts

Part Overview

The Amphenol ICC 51923-005 is a 31-position receptacle connector featuring female sockets and blade sockets for board edge, through-hole, right-angle mounting in power distribution applications. This connector is part of the PwrBlade® series and provides 24 signal and 7 power contacts with gold-plated contact finish.

The 51923-005 carries an obsolete product status. Locating equivalent or substitute components is necessary to support legacy system maintenance, repair, and continued operation where original inventory is depleted or unavailable.

Substiute Parts

51923-005

Amphenol ICC (FCI)In Stock: 86251923-005 Datasheet

Current PartRFQ

51923-005LF

Amphenol ICC (FCI)In Stock: 117551923-005LF Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 51923-005 is determined by strict equivalence across the following parameters:

• Connector type (Receptacle, Female Sockets and Blade Sockets)
• Number of positions (31)
• Pitch spacing (0.100" / 2.54mm)
• Number of rows (4)
• Mounting configuration (Board Edge, Through Hole, Right Angle)
• Contact layout (24 Signal, 7 Power)
• Contact finish specification (Gold or Gold, GXT™)
• Operating temperature range (-20°C to 105°C)
• Material flammability rating (UL94 V-0)
• Series designation (PwrBlade®)

The substitute part 51923-005LF maintains identical electrical and mechanical specifications to the main part, with the primary distinction being active product status and RoHS compliance.

Parameter Comparison

Engineering Selection Recommendations

The 51923-005LF is a direct functional equivalent to the 51923-005 across all electrical and mechanical parameters. The substitute part maintains identical connector specifications, contact configuration, and operating characteristics.

The primary distinctions are product lifecycle status and regulatory compliance:

• The 51923-005 is obsolete; the 51923-005LF is active and currently manufactured.
• The 51923-005LF is RoHS compliant and REACH affected, whereas the original part is RoHS non-compliant.

For applications requiring RoHS compliance or where long-term component availability is a consideration, the 51923-005LF is the appropriate selection. Both parts are functionally interchangeable in board-level applications where the connector specifications are the determining factor.

Frequently Asked Questions (FAQ)

Q: Are the 51923-005 and 51923-005LF mechanically interchangeable?

A: Yes. Both connectors share identical mounting type (board edge, through hole, right angle), pitch (0.100"), position count (31), and row configuration (4). They mount identically on PCBs designed for either part number.

Q: What is the significance of the "LF" suffix in the 51923-005LF part number?

A: The "LF" designation indicates lead-free and RoHS compliance. The 51923-005LF meets RoHS requirements and is REACH affected, whereas the original 51923-005 does not meet these standards.

Q: Can the 51923-005LF be used as a direct replacement for the obsolete 51923-005?

A: Yes, for applications where RoHS compliance is acceptable or required. The electrical and mechanical specifications are identical. Verify that your application or regulatory environment does not mandate the original non-compliant part specification.

Q: Are there differences in contact finish between these two parts?

A: No. Both parts feature gold or gold GXT™ contact finish with 30.0µin (0.76µm) thickness. Contact finish specifications are identical.

Q: What is the operating temperature range for both connectors?

A: Both the 51923-005 and 51923-005LF operate across -20°C to 105°C. Temperature performance is equivalent.

Q: How many signal and power contacts does this connector provide?

A: The connector provides 24 signal contacts and 7 power contacts within the 31-position configuration.