Amphenol ICC 66900-040 Equivalent & Substitute Parts

Part Overview

The Amphenol ICC 66900-040 is a 40-position rectangular receptacle connector with IDC (Insulation Displacement Contact) termination, designed for ribbon cable applications with 28-30 AWG wire gauge. This connector features gold plating, feed-through design, and strain relief in a dual-row configuration with 0.100" pitch spacing.

The 66900-040 is classified as obsolete. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production or field replacement requirements.

Key Parameters

Parameter	Value
Connector Type	Receptacle
Number of Positions	40
Pitch	0.100" (2.54mm)
Number of Rows	2
Row Spacing	0.100" (2.54mm)
Cable Termination	IDC
Wire Gauge	28-30 AWG
Contact Finish	Gold
Mounting Type	Free Hanging (In-Line)
Features	Feed Through, Strain Relief

Substitute Part Grouping Explanation

Substitution eligibility for the 66900-040 is determined by the following critical parameters:

Connector geometry: 40 positions, 0.100" pitch, 2-row configuration, receptacle type
Termination method: IDC cable termination for ribbon cable
Electrical compatibility: Gold contact finish, female socket contact type
Mechanical compatibility: Free hanging in-line mounting, feed-through design with strain relief
Wire gauge compatibility: 28-30 AWG primary specification; 26-28 AWG acceptable within IDC contact design tolerances

Substitute parts must maintain identical connector geometry, IDC termination capability, and mounting orientation. Wire gauge variations within the 26-30 AWG range are permissible due to IDC contact design flexibility. Fastening type variations (latch holder vs. none) do not affect functional substitution for ribbon cable applications.

Parameter Comparison

Parameter	66900-040 (Main)	66902-040LF	09185406813	09185407813	4-215911-0	89140-0003
Manufacturer	Amphenol ICC (FCI)	Amphenol ICC (FCI)	HARTING	HARTING	TE Connectivity	3M
Number of Positions	40	40	40	40	40	40
Pitch	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)
Number of Rows	2	2	2	2	2	2
Row Spacing	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)
Connector Type	Receptacle	Receptacle	Receptacle	Receptacle	Receptacle	Receptacle
Contact Type	Female Socket	Female Socket	Female Socket	Female Socket	Female Socket	Female Socket
Cable Termination	IDC	IDC	IDC	IDC	IDC	IDC
Wire Type	Ribbon Cable	Ribbon Cable	Ribbon Cable	Ribbon Cable	Ribbon Cable	Ribbon Cable
Wire Gauge	28-30 AWG	28-30 AWG	26-28 AWG	26-28 AWG	Not specified	26-28 AWG
Contact Finish	Gold, GXT™	Gold or Gold, GXT™	Gold	Gold	Gold	Gold
Mounting Type	Free Hanging (In-Line)	Free Hanging (In-Line)	Free Hanging (In-Line)	Free Hanging (In-Line)	Free Hanging (In-Line), Right Angle	Free Hanging (In-Line)
Features	Feed Through, Strain Relief	Feed Through, Strain Relief	Feed Through, Polarizing Key, Strain Relief	Feed Through, Polarizing Key, Strain Relief	Feed Through, Polarizing Key	Feed Through, Strain Relief
Product Status	Obsolete	Active	Active	Active	Active	Active
RoHS Status	Non-compliant	Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

Primary Substitute: Amphenol ICC 66902-040LF

The 66902-040LF is the direct successor from the same manufacturer (Amphenol ICC). It maintains identical electrical and mechanical specifications to the 66900-040, including 40-position configuration, 0.100" pitch, IDC termination for 28-30 AWG ribbon cable, and gold contact finish. The 66902-040LF is active in production with RoHS compliance, making it the preferred choice for new designs and direct replacement applications. The addition of a latch holder fastening mechanism provides enhanced mechanical retention without affecting functional compatibility.

Secondary Substitutes: HARTING 09185406813 / 09185407813

Both HARTING SEK series connectors (09185406813 in tray packaging and 09185407813 in bulk packaging) are functionally equivalent with the following considerations: they accept 26-28 AWG ribbon cable, which overlaps with the 28-30 AWG specification of the original part. Both are active products with ROHS3 compliance. The addition of a polarizing key feature provides enhanced mating orientation control. These parts are suitable for applications where wire gauge compatibility is confirmed within the 26-28 AWG range.

Tertiary Substitute: TE Connectivity 4-215911-0

The TE Connectivity AMP-Latch series 4-215911-0 maintains the 40-position, 0.100" pitch, dual-row IDC receptacle configuration. Wire gauge is not specified in available documentation. This part is active with ROHS3 compliance and includes polarizing key features. The connector supports both free hanging in-line and right-angle mounting orientations. Selection of this part requires confirmation of wire gauge compatibility with the application.

Quaternary Substitute: 3M 89140-0003

The 3M 891 series 89140-0003 is a 40-position IDC receptacle connector rated for 26-28 AWG ribbon cable. It is active in production with ROHS3 compliance and includes feed-through and strain relief features. This part is suitable for applications where the 26-28 AWG wire gauge specification is compatible with system requirements.

Frequently Asked Questions (FAQ)

Q: Can the 66902-040LF directly replace the obsolete 66900-040?

A: Yes. The 66902-040LF is the active production equivalent from Amphenol ICC with identical connector geometry, pitch, row configuration, IDC termination method, and gold contact finish. The addition of a latch holder does not affect functional compatibility for ribbon cable applications.

Q: What is the significance of wire gauge differences between 28-30 AWG and 26-28 AWG?

A: IDC contact designs accommodate wire gauge ranges through contact blade geometry and compression force specifications. The 26-28 AWG and 28-30 AWG ranges overlap at 28 AWG. Substitutes rated for 26-28 AWG are compatible with 28 AWG ribbon cables. For applications using exclusively 29-30 AWG cables, the 66902-040LF or 89140-0003 are preferred to ensure full specification compliance.

Q: Do packaging differences (tube, tray, bulk) affect connector functionality?

A: No. Packaging differences (tube, tray, bulk) relate only to order quantity, handling, and storage. They do not affect electrical or mechanical performance. Selection should be based on procurement requirements and inventory management practices.

Q: What does the polarizing key feature add to HARTING and TE Connectivity substitutes?

A: The polarizing key is a mechanical feature that prevents incorrect mating orientation between plug and receptacle connectors. It enhances assembly reliability by ensuring proper alignment. This feature is compatible with mating plugs designed for keyed connectors and does not prevent use with non-keyed plugs in applications where orientation control is not required.

Q: Are all listed substitutes RoHS compliant?

A: The original 66900-040 is RoHS non-compliant. All listed substitutes (66902-040LF, 09185406813, 09185407813, 4-215911-0, and 89140-0003) are RoHS3 compliant, meeting current environmental and regulatory requirements for new designs and production.

Q: Which substitute should be selected for new product designs?

A: The Amphenol ICC 66902-040LF is recommended for new designs as the direct active equivalent with identical specifications, RoHS compliance, and established supply chain availability from the original manufacturer.

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