Amphenol ICC 66902-124 Equivalent & Substitute Parts

Part Overview

The Amphenol ICC 66902-124 is a 24-position rectangular receptacle connector designed for IDC (Insulation Displacement Contact) termination with ribbon cable. This connector features a 0.100" pitch, dual-row configuration, and gold-plated contacts rated for 28-30 AWG wire gauges. The product is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system maintenance and new design implementations where legacy compatibility is required.

Substiute Parts

66902-124

Amphenol ICC (FCI)In Stock: 115866902-124 Datasheet

Current PartRFQ

89124-0103

3MIn Stock: 1315089124-0103 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 66902-124 is determined by strict alignment with the following critical parameters:

• Connector geometry: 24-position receptacle with 0.100" pitch and dual-row configuration
• Termination method: IDC contact system for ribbon cable
• Contact system: Female socket, gold-plated finish
• Wire compatibility: Support for ribbon cable in the specified gauge range

The 3M 89124-0103 qualifies as a functional substitute based on matching connector type, position count, pitch, row configuration, termination method, and contact finish. Wire gauge compatibility exists within the overlapping range of 26-28 AWG, which accommodates the lower end of the 66902-124 specification (28-30 AWG). Both connectors support feed-through configuration and maintain equivalent electrical and mechanical interfaces for IDC ribbon cable applications.

Parameter Comparison

Engineering Selection Recommendations

The 3M 89124-0103 serves as the primary substitute for the obsolete Amphenol ICC 66902-124. Selection between these parts should be based on the following criteria:

Product Status: The 66902-124 is obsolete with limited inventory availability (1112 pcs). The 89124-0103 is active with substantial inventory (13095 pcs), ensuring supply continuity for new designs and ongoing production requirements.

Regulatory Compliance: The 89124-0103 is ROHS3 compliant, whereas the 66902-124 is RoHS non-compliant. For applications subject to RoHS directives, the 89124-0103 is the required selection. Both parts are REACH unaffected and classified under ECCN EAR99.

Wire Gauge Consideration: The 66902-124 accommodates 28-30 AWG ribbon cable, while the 89124-0103 supports 26-28 AWG. The overlapping range (26-28 AWG) permits direct substitution for applications using wire gauges within this band. Applications requiring 29-30 AWG wire must evaluate mechanical fit and contact pressure characteristics with the substitute part.

Additional Features: The 89124-0103 includes polarizing key and strain relief features not specified for the 66902-124, providing enhanced mechanical robustness in field applications.

Frequently Asked Questions (FAQ)

Q: Can the 3M 89124-0103 directly replace the Amphenol ICC 66902-124 in existing assemblies?

A: Yes, for applications using ribbon cable within the 26-28 AWG range. Both connectors share identical pitch (0.100"), position count (24), row configuration (2 rows), and IDC termination method. Physical and electrical interfaces are compatible. Applications using 29-30 AWG wire should verify contact engagement and retention with the substitute part specifications.

Q: What is the significance of the wire gauge difference between these parts?

A: The 66902-124 specifies 28-30 AWG while the 89124-0103 specifies 26-28 AWG. The overlapping range (26-28 AWG) ensures compatibility for most ribbon cable applications. Wire gauges of 29-30 AWG fall outside the 89124-0103 specification and require engineering evaluation before substitution.

Q: Why is RoHS compliance important for this substitution?

A: The 66902-124 is RoHS non-compliant while the 89124-0103 is ROHS3 compliant. For new designs or applications subject to RoHS directives (EU and equivalent regulations), the 89124-0103 is the mandated selection. Existing legacy systems using the 66902-124 may continue operation under grandfather provisions, but new procurement should prioritize the compliant alternative.

Q: Are there mechanical differences between these connectors?

A: Both connectors are free-hanging, in-line receptacles with identical pitch and row spacing. The 89124-0103 includes polarizing key and strain relief features. These additions enhance mechanical stability but do not prevent physical mating with compatible plug connectors designed for 0.100" pitch, 24-position receptacles.

Q: What inventory considerations apply to this substitution?

A: The 66902-124 has limited inventory (1112 pcs) and obsolete status. The 89124-0103 is active with substantial stock (13095 pcs). For production planning, the 89124-0103 provides superior supply assurance and lead-time predictability.