Amphenol ICC 66900-124 Rectangular Connector Equivalent & Substitute Parts

Part Overview

The Amphenol ICC 66900-124 is a 24-position rectangular receptacle connector designed for IDC (Insulation Displacement Contact) termination with ribbon cable. This connector features gold-plated contacts rated for 28-30 AWG wire gauge and operates in a free-hanging, in-line configuration with a 0.100" pitch and dual-row layout.

The 66900-124 is classified as obsolete. Identifying equivalent substitute parts is necessary to maintain design continuity and ensure component availability for applications currently utilizing this connector.

Key Parameters

Parameter	Value
Connector Type	Receptacle
Contact Type	Female Socket
Number of Positions	24
Pitch	0.100" (2.54mm)
Number of Rows	2
Row Spacing	0.100" (2.54mm)
Cable Termination	IDC
Wire Type	Ribbon Cable
Wire Gauge	28-30 AWG
Contact Finish	Gold
Mounting Type	Free Hanging (In-Line)

Substitute Part Grouping Explanation

Substitute parts for the 66900-124 are identified based on electrical and mechanical compatibility within the rectangular connector category. The following parameters establish substitution validity:

Critical Parameters for Substitution:

Connector type (Receptacle)
Contact type (Female Socket)
Number of positions (24)
Pitch (0.100" / 2.54mm)
Number of rows (2)
Row spacing (0.100" / 2.54mm)
Cable termination method (IDC)
Wire type (Ribbon Cable)
Contact finish (Gold)
Mounting type (Free Hanging, In-Line)

Allowable Variation:

Wire gauge tolerance: The main part accepts 28-30 AWG; substitute parts rated for 26-28 AWG are compatible as this range encompasses the lower end of the original specification and maintains IDC contact integrity.

Parameter Comparison

Parameter	66900-124 (Amphenol ICC)	09185246803 (HARTING)	89124-0001 (3M)
Manufacturer	Amphenol ICC (FCI)	HARTING	3M
Series	Quickie™	SEK	891
Product Status	Obsolete	Active	Active
Connector Type	Receptacle	Receptacle	Receptacle
Contact Type	Female Socket	Female Socket	Female Socket
Number of Positions	24	24	24
Pitch	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)
Number of Rows	2	2	2
Row Spacing	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)
Cable Termination	IDC	IDC	IDC
Wire Type	Ribbon Cable	Ribbon Cable	Ribbon Cable
Wire Gauge	28-30 AWG	26-28 AWG	26-28 AWG
Contact Finish	Gold	Gold	Gold
Mounting Type	Free Hanging (In-Line)	Free Hanging (In-Line)	Free Hanging (In-Line)
RoHS Status	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected
ECCN	EAR99	EAR99	EAR99

Engineering Selection Recommendations

Both substitute parts—HARTING 09185246803 and 3M 89124-0001—satisfy the core electrical and mechanical requirements for direct substitution of the obsolete Amphenol ICC 66900-124.

Compliance Advantage: Both substitute parts carry ROHS3 compliance, whereas the original 66900-124 is RoHS non-compliant. This compliance status is significant for applications subject to RoHS regulations.

Product Status: Both substitutes are classified as Active, ensuring ongoing availability and supply chain stability compared to the Obsolete status of the original part.

Wire Gauge Consideration: The substitute parts are rated for 26-28 AWG ribbon cable, which overlaps with the lower end of the original specification (28-30 AWG). This wire gauge range is compatible with IDC contact technology and maintains electrical performance within the connector's design parameters.

Availability: The 3M 89124-0001 maintains higher inventory levels (12,230 pcs) compared to the HARTING 09185246803 (1,148 pcs), which may influence procurement decisions based on lead time requirements.

Frequently Asked Questions (FAQ)

Q: Can the HARTING 09185246803 or 3M 89124-0001 directly replace the Amphenol ICC 66900-124?

A: Yes. Both substitute parts maintain identical pitch (0.100"), row configuration (2 rows), position count (24), and IDC termination method. The connectors are mechanically and electrically compatible for ribbon cable applications.

Q: Why do the substitute parts specify 26-28 AWG instead of 28-30 AWG?

A: The 26-28 AWG specification encompasses the lower end of the original 28-30 AWG range. IDC contact technology accommodates this overlap, and both wire gauges within each range function within the connector's design parameters. Wire gauge selection should be based on application current requirements and cable availability.

Q: What is the significance of the RoHS compliance difference?

A: The original 66900-124 is RoHS non-compliant, while both substitutes are ROHS3 compliant. For applications subject to RoHS regulations (particularly in EU markets or regulated industries), the substitute parts provide regulatory alignment. For legacy applications without RoHS requirements, this difference is not functionally relevant.

Q: Are there any mechanical differences between the three connectors?

A: The HARTING 09185246803 includes a polarizing key feature not specified for the other two parts. This feature prevents incorrect mating orientation. The Amphenol ICC 66900-124 and 3M 89124-0001 do not list polarizing features. Verify mating connector compatibility if polarization is a design requirement.

Q: How should wire gauge selection be made when transitioning from the original part?

A: Wire gauge selection depends on application current requirements and cable specifications. The 26-28 AWG range of the substitute parts is suitable for applications originally designed for 28-30 AWG ribbon cable. Confirm that existing ribbon cable inventory or procurement specifications are compatible with the 26-28 AWG rating.

Q: What is the impact of the different series designations (Quickie™, SEK, 891)?

A: Series designations identify product families within each manufacturer's portfolio. The series difference does not affect electrical or mechanical compatibility. Each series represents the manufacturer's design approach to the same functional connector category.

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