Amphenol ICC 66900-350 Equivalent & Substitute Parts

Part Overview

The Amphenol ICC 66900-350 is a 50-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-plated contacts, a polarizing key, and feed-through capability in the Quickie™ series. The part is currently listed as obsolete, making equivalent and substitute parts necessary for ongoing system support and new designs requiring compatible connectivity solutions.

Key Parameters

Parameter	Value
Connector Type	Receptacle
Number of Positions	50
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
Features	Feed Through, Polarizing Key
Mounting Type	Free Hanging (In-Line)

Substitute Part Grouping Explanation

Substitution eligibility for the 66900-350 is determined by strict alignment with the following core parameters:

Connector Type & Position Count: Must be a 50-position receptacle connector
Pitch & Row Configuration: Must maintain 0.100" (2.54mm) pitch with 2-row layout and 0.100" row spacing
Cable Termination Method: Must use IDC termination for ribbon cable compatibility
Contact Finish: Must feature gold plating for electrical performance equivalence
Polarizing Features: Must include polarizing key and feed-through capability
Wire Gauge Compatibility: Acceptable wire gauge range is 26-30 AWG, allowing for minor variations within IDC contact design tolerances

The three substitute parts listed meet these criteria while offering different product statuses and compliance certifications suitable for various application requirements.

Parameter Comparison

Parameter	66900-350 (Main)	66900-350LF	89150-0101	PS-50SM-D4P1-1DA
Manufacturer	Amphenol ICC (FCI)	Amphenol ICC (FCI)	3M	JAE Electronics
Connector Type	Receptacle	Receptacle	Receptacle	Receptacle
Number of Positions	50	50	50	50
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 Type	Ribbon Cable	Ribbon Cable	Ribbon Cable	Discrete or Ribbon Cable
Wire Gauge	28-30 AWG	28-30 AWG	26-28 AWG	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
Mounting Type	Free Hanging (In-Line)	Free Hanging (In-Line)	Free Hanging (In-Line)	Free Hanging (In-Line)
Product Status	Obsolete	Active	Active	Active
RoHS Status	RoHS non-compliant	RoHS Compliant	ROHS3 Compliant	RoHS Compliant

Engineering Selection Recommendations

66900-350LF (Amphenol ICC): This is the direct successor to the 66900-350 within the same manufacturer's product line. It maintains identical electrical and mechanical specifications while offering active product status and RoHS compliance. This part is the primary recommendation for applications requiring continuity with the original design and ongoing manufacturer support.

89150-0101 (3M): This 3M 891 series connector provides functional equivalence with a wire gauge specification of 26-28 AWG, which overlaps with the main part's 28-30 AWG range. It offers ROHS3 compliance and active status. Selection of this part is appropriate when cross-manufacturer compatibility is acceptable and 3M supply chain advantages are beneficial.

PS-50SM-D4P1-1DA (JAE Electronics): This JAE Electronics PS series connector operates at 28 AWG, matching the lower end of the main part's wire gauge range. It includes a latch holder fastening mechanism and supports both discrete and ribbon cable configurations. This part is suitable for applications where JAE Electronics supply relationships are established and the latch holder feature provides mechanical advantage.

Frequently Asked Questions (FAQ)

Q: Can the 66900-350LF be used as a direct replacement for the 66900-350?

A: Yes. The 66900-350LF maintains identical electrical and mechanical parameters including 50-position count, 0.100" pitch, 2-row configuration, IDC termination, 28-30 AWG wire gauge, and gold contact finish. The primary difference is product status (active vs. obsolete) and RoHS compliance.

Q: What is the significance of the wire gauge differences between substitute parts?

A: The main part specifies 28-30 AWG. The 89150-0101 operates at 26-28 AWG, and the PS-50SM-D4P1-1DA operates at 28 AWG. These variations fall within acceptable IDC contact design tolerances for 50-position ribbon cable connectors. Wire gauge selection should align with the actual cable gauge used in the application.

Q: Are all substitute parts compatible with existing ribbon cable assemblies?

A: All substitute parts maintain the same 0.100" (2.54mm) pitch, 2-row configuration, and IDC termination method. Compatibility depends on the specific wire gauge of existing cable assemblies. Verify that the cable gauge matches the connector specification.

Q: What is the difference between the GXT™ contact finish on the main part and standard gold finish on substitutes?

A: GXT™ is Amphenol's proprietary gold plating specification. All parts feature gold contact finish at 30.0µin (0.76µm) thickness, except the PS-50SM-D4P1-1DA which specifies 3.94µin (0.10µm). The functional performance for IDC ribbon cable applications is equivalent across all parts.

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

A: For new designs, 66900-350LF is recommended as the primary choice due to identical specifications, active product status, and RoHS compliance within the same manufacturer ecosystem. Alternative selections depend on established supply relationships and specific application requirements.

Q: Do all substitute parts support feed-through and polarizing key features?

A: Yes. All three substitute parts include both feed-through and polarizing key features, maintaining functional equivalence with the main part.

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