TE Connectivity AMP Connectors 770666-2 Equivalent & Substitute Parts

Part Overview

The TE Connectivity AMP Connectors 770666-2 is a socket contact connector designed for 22-26 AWG wire gauges with gold plating and crimp termination. This component belongs to the CST-100 series rectangular connectors category. The part is classified as obsolete, necessitating identification of active equivalent alternatives that maintain identical electrical and mechanical specifications for continued system support and new design implementations.

Substiute Parts

770666-2

TE Connectivity AMP ConnectorsIn Stock: 1165770666-2 Datasheet

Current PartRFQ

1445336-3

TE Connectivity AMP ConnectorsIn Stock: 175421445336-3 Datasheet

SimilarRFQ

75691-004LF

Amphenol ICC (FCI)In Stock: 106175691-004LF Datasheet

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75691-005LF

Amphenol ICC (FCI)In Stock: 87775691-005LF Datasheet

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75691-006LF

Amphenol ICC (FCI)In Stock: 79375691-006LF Datasheet

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75691-013LF

Amphenol ICC (FCI)In Stock: 116975691-013LF Datasheet

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75691-014LF

Amphenol ICC (FCI)In Stock: 85275691-014LF Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the 770666-2 is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Wire Gauge: 22-26 AWG
• Contact Termination: Crimp
• Contact Finish: Gold
• Pin or Socket: Socket
• Moisture Sensitivity Level: 1 (Unlimited)
• RoHS Compliance: ROHS3 or equivalent RoHS Compliant status

Acceptable Variation Parameters:

• Manufacturer: TE Connectivity AMP Connectors or Amphenol ICC (FCI)
• Series: CST-100, CST-100 II, or Mini-PV™ Basics+
• Packaging: Bulk or Tape & Reel (TR)
• Product Status: Active (preferred for ongoing availability)

All identified substitute parts maintain identical wire gauge, termination method, contact finish material, and moisture sensitivity specifications. Substitutes are available from active product lines with confirmed inventory and current manufacturing status.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: 1445336-3

The TE Connectivity AMP Connectors 1445336-3 is the preferred substitute for the obsolete 770666-2. Both components are manufactured by TE Connectivity AMP Connectors, maintaining design continuity within the same manufacturer ecosystem. The 1445336-3 operates within the CST-100 II series, an active product line with significantly higher inventory availability (17445 units). This part maintains all critical electrical and mechanical parameters: 22-26 AWG wire gauge, crimp termination, gold contact finish at 30.0µin thickness, ROHS3 compliance, and MSL 1 rating. The active product status ensures long-term supply chain stability and technical support.

Secondary Substitutes: 75691-004LF, 75691-005LF, 75691-006LF, 75691-013LF, 75691-014LF

The Amphenol ICC (FCI) Mini-PV™ Basics+ series socket contacts provide functional equivalence across all mandatory parameters. These parts maintain identical wire gauge (22-26 AWG), crimp termination, gold contact finish, and MSL 1 rating. All are active products with confirmed inventory. Selection among these variants depends on packaging requirements: bulk packaging (75691-004LF, 75691-013LF, 75691-014LF) or tape and reel format (75691-005LF, 75691-006LF). RoHS compliance is confirmed for all Amphenol alternatives, though contact finish thickness specifications are not provided in technical documentation.

Frequently Asked Questions (FAQ)

Q: Can the 770666-2 be directly replaced with 1445336-3 in existing assemblies?

A: Yes. Both parts share identical electrical and mechanical specifications across all critical parameters: 22-26 AWG wire gauge, crimp termination, gold contact finish at 30.0µin thickness, ROHS3 compliance, and MSL 1 rating. The 1445336-3 is manufactured by the same supplier (TE Connectivity AMP Connectors) and represents the active successor within the CST-100 series family.

Q: What is the difference between TE Connectivity 1445336-3 and Amphenol 75691 series substitutes?

A: Both options meet all mandatory electrical and mechanical requirements. The primary difference is manufacturer: TE Connectivity maintains design continuity with the original 770666-2, while Amphenol ICC (FCI) offers an alternative from a different manufacturer. The Amphenol Mini-PV™ Basics+ series provides equivalent functionality with multiple packaging options. Selection depends on supply chain preferences and connector interface compatibility with existing mating components.

Q: Does packaging format affect electrical performance?

A: No. Packaging format (bulk versus tape and reel) does not affect electrical or mechanical performance. Selection is based on manufacturing process requirements and inventory management. Bulk packaging (75691-004LF, 75691-013LF, 75691-014LF) suits high-volume applications, while tape and reel format (75691-005LF, 75691-006LF) is optimized for automated assembly processes.

Q: Are all substitutes RoHS compliant?

A: Yes. The primary substitute 1445336-3 is ROHS3 compliant. All Amphenol ICC (FCI) alternatives (75691-004LF, 75691-005LF, 75691-006LF, 75691-013LF, 75691-014LF) are RoHS compliant. Compliance status meets regulatory requirements for both legacy and current manufacturing standards.

Q: What is the significance of MSL 1 (Unlimited) rating?

A: MSL 1 indicates unlimited shelf life without moisture sensitivity concerns. All substitute parts maintain this rating, ensuring no special storage or handling requirements beyond standard component storage practices.

Q: Why is contact finish thickness not specified for Amphenol parts?

A: Contact finish thickness specifications are not provided in the technical documentation for Amphenol ICC (FCI) parts. However, all parts maintain gold contact finish material and are functionally equivalent for 22-26 AWG crimp applications. Specific thickness requirements should be verified against connector interface specifications if critical to application performance.

Q: Can substitutes be mixed within a single assembly?

A: Yes. All substitute parts meet identical electrical and mechanical specifications for wire gauge, termination, contact finish material, and moisture sensitivity. Mixing substitutes within a single assembly does not compromise electrical performance. However, connector interface compatibility with mating components should be verified based on specific connector housing designs.