66900-050 Equivalent & Substitute Parts

Part Overview

The 66900-050 is a 50-position rectangular receptacle connector manufactured by Amphenol ICC (FCI) under the Quickie™ series. This female socket connector is designed for IDC (Insulation Displacement Contact) termination with ribbon cable, featuring gold-plated contacts and a polarizing key for secure mating. The connector is currently in active production status with 1020 units available in stock. Alternative components may be required due to supply constraints, design revisions, or specific compliance requirements in target applications.

Substiute Parts

66900-050

Amphenol ICC (FCI)In Stock: 107866900-050 Datasheet

Current PartRFQ

89150-0003

3MIn Stock: 170189150-0003 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 66900-050 is determined by the following critical parameters:

• Connector configuration: 50-position receptacle with 2-row arrangement at 0.100" (2.54mm) pitch and row spacing
• Termination method: IDC cable termination for ribbon cable
• Contact system: Female socket contacts with gold plating at 30.0µin (0.76µm) thickness
• Mounting interface: Free hanging in-line configuration
• Mechanical compatibility: Feed through and strain relief features

The substitute part 89150-0003 (3M 891 series) satisfies all critical substitution parameters. Wire gauge compatibility spans 26-30 AWG across both components, with the substitute rated for 26-28 AWG and the primary part rated for 28-30 AWG, providing overlap in the 28 AWG range for direct substitution in ribbon cable applications.

Parameter Comparison

Engineering Selection Recommendations

Primary Part (66900-050): Recommended for new designs and applications requiring RoHS non-compliant components. Active production status ensures long-term availability. The Quickie™ series polarizing key provides additional mating security.

Substitute Part (89150-0003): Suitable for applications requiring ROHS3 compliance and REACH unaffected status. The 3M 891 series provides equivalent electrical and mechanical performance with enhanced regulatory compliance. Wire gauge specification of 26-28 AWG is compatible with 28 AWG ribbon cable, the overlap point with the primary part's 28-30 AWG range.

Selection between these components should be based on regulatory requirements, packaging preferences (tube versus bulk), and connector color specifications for assembly or identification purposes.

Frequently Asked Questions (FAQ)

Q: Can 89150-0003 directly replace 66900-050 in existing designs?

A: Yes, for applications using 28 AWG ribbon cable. Both connectors share identical pitch, row configuration, IDC termination method, and contact finish specifications. Verify that your ribbon cable gauge falls within the 26-28 AWG range of the substitute part.

Q: What is the significance of the wire gauge difference?

A: The primary part (66900-050) accepts 28-30 AWG ribbon cable, while the substitute (89150-0003) accepts 26-28 AWG. The 28 AWG specification is common to both, making it the compatible wire gauge for direct substitution. Applications using 29-30 AWG ribbon cable require the primary part.

Q: Are there differences in mechanical compatibility?

A: Both connectors feature identical 0.100" (2.54mm) pitch, 2-row configuration, and free hanging in-line mounting. The primary part includes a polarizing key feature; the substitute does not. Verify mating connector compatibility if polarization is critical to your application.

Q: What are the packaging implications?

A: The primary part is supplied in tube packaging; the substitute is supplied in bulk packaging. This affects inventory management and handling procedures but does not impact electrical or mechanical performance.

Q: How do compliance certifications affect part selection?

A: The primary part is RoHS non-compliant. The substitute is ROHS3 compliant and REACH unaffected. Select based on your product's regulatory requirements and target market compliance obligations.