66432-040 Equivalent & Substitute Parts

Part Overview

The Amphenol ICC 66432-040 is a 40-position rectangular receptacle connector from the Quickie™ series, designed for IDC (Insulation Displacement Contact) termination with ribbon cable. This connector features a 0.100" (2.54mm) pitch in a 2-row configuration with gold-plated contacts and integrated strain relief. The part is currently active in production with 1106 units in stock. Substitute parts are identified when equivalent electrical and mechanical parameters are maintained, enabling procurement flexibility and supply chain continuity.

Substiute Parts

66432-040

Amphenol ICC (FCI)In Stock: 119366432-040 Datasheet

Current PartRFQ

89140-0003

3MIn Stock: 189089140-0003 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The 3M 89140-0003 is identified as a manufacturer-recommended substitute based on the following critical parameters:

• Connector geometry: Both parts maintain 40 positions in a 2-row configuration with 0.100" (2.54mm) pitch and row spacing
• Termination method: Both use IDC termination for ribbon cable
• Contact configuration: Both feature female socket contacts with gold plating
• Mounting interface: Both are free-hanging, in-line mounted receptacles
• Electrical compatibility: Both support the same contact pitch and row spacing, ensuring mechanical and electrical interchangeability

Wire gauge compatibility exists within acceptable ranges: the main part supports 28-30 AWG while the substitute supports 26-28 AWG, with 28 AWG as the common operating range.

Parameter Comparison

Engineering Selection Recommendations

Both the 66432-040 and 89140-0003 are active production parts with identical MSL ratings and export classifications. The primary differentiation is regulatory compliance: the 3M 89140-0003 is ROHS3 compliant, while the Amphenol ICC 66432-040 is RoHS non-compliant. Selection should be based on application regulatory requirements. The 66432-040 includes a polarizing key feature not present in the 89140-0003; applications requiring polarization control must retain the original part. Wire gauge operating ranges overlap at 28 AWG, supporting direct substitution for standard ribbon cable applications within this specification.

Frequently Asked Questions (FAQ)

Q: Can the 3M 89140-0003 directly replace the Amphenol ICC 66432-040?

A: Yes, for applications where RoHS3 compliance is acceptable or required. Both connectors share identical pitch, row spacing, position count, and IDC termination method. The 28 AWG wire gauge is supported by both parts.

Q: What is the significance of the polarizing key feature in the 66432-040?

A: The polarizing key prevents incorrect mating orientation. If your application requires polarization control, the 66432-040 must be retained. The 89140-0003 lacks this feature.

Q: Are there wire gauge compatibility concerns?

A: The 66432-040 supports 28-30 AWG; the 89140-0003 supports 26-28 AWG. Both accommodate 28 AWG ribbon cable. If your application uses 29-30 AWG exclusively, the 66432-040 is required.

Q: What is the difference in packaging between these parts?

A: The 66432-040 is supplied in tube packaging; the 89140-0003 is supplied in bulk packaging. Verify packaging requirements for your procurement and assembly processes.

Q: Does RoHS compliance affect electrical performance?

A: No. RoHS compliance relates to material composition and environmental regulations, not electrical characteristics. Both parts maintain identical contact finish thickness and gold plating specifications.

Q: Can these connectors be used interchangeably in existing designs?

A: Mechanical and electrical interchangeability is confirmed for standard IDC ribbon cable applications. Design validation should confirm that the absence of the polarizing key in the 89140-0003 does not conflict with application requirements.