Amphenol ICC 66900-334 Rectangular Connector Equivalent & Substitute Parts

Part Overview

The Amphenol ICC 66900-334 is a 34-position rectangular receptacle connector designed for IDC (Insulation Displacement Contact) termination with ribbon cable. This connector features a Quickie™ series design with gold-plated contacts and a polarizing key for secure mating. The part is currently obsolete, making equivalent and substitute parts necessary for ongoing system maintenance and new designs requiring compatible interconnect solutions.

Key Parameters

Parameter	Value
Connector Type	Receptacle
Number of Positions	34
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
Features	Feed Through, Polarizing Key
Mounting Type	Free Hanging (In-Line)

Substitute Part Grouping Explanation

Substitution for the 66900-334 is determined by the following critical parameters: connector type (receptacle), number of positions (34), pitch (0.100"), row configuration (2 rows with 0.100" spacing), cable termination method (IDC), contact finish (gold), and presence of polarizing key features. Wire gauge compatibility and RoHS/compliance status are secondary considerations that affect suitability for specific applications.

The substitute parts are grouped into two categories:

Direct Equivalent (Same Position Count): Part 66900-334LF maintains identical electrical and mechanical specifications with improved compliance status.

Functional Equivalent (Compatible Position Count): Part 89134-0101 provides the same 34-position configuration with compatible wire gauge range. Part 89144-0101 offers a 44-position variant for applications requiring expanded contact density while maintaining the same pitch and row spacing.

Parameter Comparison

Parameter	66900-334	66900-334LF	89134-0101	89144-0101
Manufacturer	Amphenol ICC (FCI)	Amphenol ICC (FCI)	3M	3M
Connector Type	Receptacle	Receptacle	Receptacle	Receptacle
Number of Positions	34	34	34	44
Pitch	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)
Number of Rows	2	2	2	2
Row Spacing	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)
Cable Termination	IDC	IDC	IDC	IDC
Wire Gauge	28-30 AWG	28-30 AWG	26-28 AWG	26-28 AWG
Contact Finish	Gold, GXT™	Gold, GXT™	Gold	Gold
Features	Feed Through, Polarizing Key	Feed Through, Polarizing Key	Feed Through, Polarizing Key	Feed Through, Polarizing Key
Product Status	Obsolete	Active	Active	Active
RoHS Status	Non-compliant	Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

66900-334LF is the primary direct substitute for the obsolete 66900-334. This part maintains identical electrical and mechanical specifications while offering active product status and RoHS compliance. The LF designation indicates lead-free termination, making it suitable for applications requiring environmental compliance. Packaging is supplied in tube format.

89134-0101 (3M 891 Series) provides a compatible 34-position rectangular receptacle with identical pitch and row spacing. The wire gauge range of 26-28 AWG overlaps with the original specification, supporting ribbon cable termination with IDC contacts. This part carries ROHS3 compliance and is supplied in bulk packaging. The 3M 891 series shares the same mechanical footprint and contact arrangement.

89144-0101 (3M 891 Series) is a 44-position variant suitable only for applications where expanded contact density is required. While maintaining the same 0.100" pitch and row spacing, the increased position count makes this part suitable for designs requiring additional signal or power distribution channels within the same connector envelope. This part is not a direct substitute but serves as a functional alternative for redesigned interconnect schemes.

Frequently Asked Questions (FAQ)

Q: Can 66900-334LF be used as a direct replacement for 66900-334?

A: Yes. The 66900-334LF maintains identical electrical and mechanical specifications including 34 positions, 0.100" pitch, 2-row configuration, IDC termination, 28-30 AWG wire gauge, and gold contact finish. The primary differences are active product status and RoHS compliance.

Q: What is the wire gauge compatibility between the original part and 3M substitutes?

A: The original 66900-334 specifies 28-30 AWG. The 3M 89134-0101 and 89144-0101 specify 26-28 AWG. The 28 AWG wire gauge is common to both specifications, providing compatibility for ribbon cable termination within this gauge range.

Q: Is the 89144-0101 a suitable substitute for the 66900-334?

A: The 89144-0101 is not a direct substitute due to its 44-position configuration versus the 34-position requirement. It is suitable only for applications redesigned to accommodate the additional contact positions while maintaining the same 0.100" pitch and row spacing.

Q: What are the packaging differences among substitute parts?

A: The 66900-334 and 66900-334LF are supplied in standard and tube packaging respectively. The 3M parts (89134-0101 and 89144-0101) are supplied in bulk packaging. Packaging selection should align with procurement and assembly requirements.

Q: Are all substitute parts RoHS compliant?

A: The 66900-334 is RoHS non-compliant. The 66900-334LF is RoHS compliant. The 3M parts (89134-0101 and 89144-0101) are ROHS3 compliant. Compliance requirements should be verified against application specifications.

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