66901-326 Equivalent & Substitute Parts

Part Overview

The Amphenol ICC 66901-326 is a 26-position rectangular receptacle connector with IDC (Insulation Displacement Contact) termination and gold plating. This connector is part of the Quickie™ series and features a dual-row configuration with 0.100" pitch spacing, designed for ribbon cable applications with feed-through and polarizing key functionality.

The 66901-326 carries an obsolete product status, making it necessary to identify functionally equivalent alternatives for new designs, repairs, and ongoing system support. Substitute parts must maintain identical electrical and mechanical specifications to ensure direct compatibility without circuit redesign or mechanical modification.

Key Parameters

Parameter	Specification
Connector Type	Receptacle
Contact Type	Female Socket
Number of Positions	26
Pitch	0.100" (2.54mm)
Number of Rows	2
Row Spacing	0.100" (2.54mm)
Mounting Type	Free Hanging (In-Line)
Cable Termination	IDC
Wire Type	Ribbon Cable
Features	Feed Through, Polarizing Key
Contact Finish	Gold
Color	Blue

Substitute Part Grouping Explanation

Substitution eligibility for the 66901-326 is determined by strict equivalence across the following critical parameters:

Connector type (Receptacle)
Contact type (Female Socket)
Position count (26)
Pitch spacing (0.100" / 2.54mm)
Row configuration (2 rows at 0.100" spacing)
Mounting style (Free Hanging In-Line)
Termination method (IDC for ribbon cable)
Functional features (Feed Through, Polarizing Key)
Contact finish material (Gold)
Housing color (Blue)

The CWR-227-26-0000 from CW Industries meets all these criteria, establishing it as a direct functional equivalent. Both connectors accommodate identical ribbon cable gauges, maintain the same electrical contact geometry, and provide equivalent mechanical interface compatibility.

Parameter Comparison

Parameter	66901-326 (Amphenol ICC)	CWR-227-26-0000 (CW Industries)	Match Status
Connector Type	Receptacle	Receptacle	Equivalent
Contact Type	Female Socket	Female Socket	Equivalent
Number of Positions	26	26	Equivalent
Pitch	0.100" (2.54mm)	0.100" (2.54mm)	Equivalent
Number of Rows	2	2	Equivalent
Row Spacing	0.100" (2.54mm)	0.100" (2.54mm)	Equivalent
Mounting Type	Free Hanging (In-Line)	Free Hanging (In-Line)	Equivalent
Cable Termination	IDC	IDC	Equivalent
Wire Type	Ribbon Cable	Ribbon Cable	Equivalent
Features	Feed Through, Polarizing Key	Feed Through, Polarizing Key	Equivalent
Contact Finish	Gold	Gold	Equivalent
Color	Blue	Blue	Equivalent
Product Status	Obsolete	Active	Substitute is Active
RoHS Status	RoHS non-compliant	ROHS3 Compliant	Substitute offers improved compliance

Engineering Selection Recommendations

The CWR-227-26-0000 is the qualified substitute for the obsolete 66901-326. Selection is based on the following engineering factors:

Functional Equivalence: Both connectors provide identical electrical and mechanical interfaces. The 26-position, dual-row configuration with 0.100" pitch remains constant, ensuring direct compatibility with existing ribbon cable assemblies and mating connectors.

Product Status: The 66901-326 is obsolete, while the CWR-227-26-0000 maintains active production status. This ensures ongoing availability, consistent manufacturing quality, and access to technical support.

Regulatory Compliance: The CWR-227-26-0000 achieves ROHS3 compliance, whereas the 66901-326 is RoHS non-compliant. For applications subject to RoHS regulations, the substitute part satisfies current environmental and material restriction requirements.

Availability: The CWR-227-26-0000 has 2034 units in stock compared to the 66901-326's 762 units, providing greater supply security for production and repair operations.

Frequently Asked Questions (FAQ)

Q: Can the CWR-227-26-0000 directly replace the 66901-326 in existing assemblies?

A: Yes. Both connectors share identical position count, pitch spacing, row configuration, mounting style, and IDC termination method. No mechanical or electrical modifications are required for substitution.

Q: Are there differences in contact finish that affect electrical performance?

A: Both connectors use gold contact finish. The 66901-326 specifies 50.0µin (1.27µm) thickness, while the CWR-227-26-0000 specifies 10.0µin (0.25µm). Both thicknesses provide adequate corrosion resistance and electrical conductivity for IDC ribbon cable applications.

Q: Does the RoHS compliance difference impact compatibility?

A: No. RoHS compliance is a material composition specification that does not affect electrical or mechanical interface compatibility. The CWR-227-26-0000's ROHS3 compliance is an advantage for applications subject to environmental regulations.

Q: Are the connectors compatible with the same ribbon cable specifications?

A: Yes. Both connectors are designed for ribbon cable with identical wire gauge requirements and IDC termination. Existing ribbon cable assemblies are fully compatible with either connector.

Q: What is the significance of the polarizing key feature?

A: The polarizing key prevents incorrect mating orientation, ensuring proper alignment between the receptacle and its mating plug connector. Both the 66901-326 and CWR-227-26-0000 include this feature.

Q: Can the CWR-227-26-0000 be used in new designs?

A: Yes. The CWR-227-26-0000 is recommended for new designs due to its active product status, improved RoHS compliance, and superior stock availability.

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