TE Connectivity AMP Connectors 3-644627-7 Equivalent & Substitute Parts

Part Overview

The TE Connectivity AMP Connectors 3-644627-7 is an active rectangular connector header designed for through-hole mounting applications. This shrouded, single-wall 7-position connector operates at 0.156" (3.96mm) pitch and is configured for board-to-cable/wire interconnection. The connector features male pin contacts with gold-plated mating surfaces and tin-plated posts, suitable for general purpose and industrial applications across an operating temperature range of -55°C to 105°C.

Substitute parts are identified to provide alternative sourcing options when the primary part number becomes unavailable or when inventory constraints require component alternatives that maintain equivalent electrical and mechanical performance characteristics.

Substiute Parts

3-644627-7

TE Connectivity AMP ConnectorsIn Stock: 9833-644627-7 Datasheet

Current PartRFQ

0026604070

MolexIn Stock: 394290026604070 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for rectangular connector headers is determined by alignment of critical mechanical and electrical parameters that ensure physical and functional compatibility within the mating system. The following parameters establish the substitution basis:

Critical Matching Parameters:

• Connector pitch (0.156" / 3.96mm mating pitch)
• Number of positions (7-position configuration)
• Number of rows (single row)
• Connector type (header)
• Contact type (male pin)
• Mounting method (through-hole solder termination)
• Shrouding configuration (shrouded, single wall)
• Fastening mechanism (friction lock)
• Contact shape (square)
• Flammability rating (UL94 V-0 minimum)
• Compliance certifications (RoHS, REACH)

The Molex 0026604070 connector satisfies all critical substitution parameters, enabling direct functional replacement in applications requiring 7-position, 3.96mm pitch header connectors with through-hole solder termination and shrouded single-wall construction.

Parameter Comparison

Engineering Selection Recommendations

Both the TE Connectivity 3-644627-7 and Molex 0026604070 connectors maintain active product status with full regulatory compliance. Selection between these parts should be based on the following engineering considerations:

TE Connectivity 3-644627-7 (Primary Part):

• Gold-plated mating contacts provide enhanced corrosion resistance and contact reliability in demanding environments
• Thermoplastic glass-filled insulation material
• Greater insulation height (0.545" vs 0.446")
• Established supply chain with 927 units in current inventory

Molex 0026604070 (Substitute Part):

• Tin-plated mating contacts suitable for general purpose and industrial applications
• Polyester glass-filled insulation material
• Reduced insulation height (0.446")
• Significantly higher inventory availability (39,397 units)
• Extended application range including automotive, medical, and telecommunications

Both parts satisfy UL94 V-0 flammability requirements, RoHS compliance, and REACH unaffected status. The Molex substitute is electrically and mechanically compatible for applications where gold-plated contact surfaces are not a critical requirement. Contact post length variation (0.125" vs 0.140") and overall contact length difference (0.700" vs 0.720") are within acceptable tolerances for standard through-hole PCB mounting.

Frequently Asked Questions (FAQ)

Q: Can the Molex 0026604070 directly replace the TE Connectivity 3-644627-7 in existing designs?

A: The Molex 0026604070 is mechanically and electrically compatible for direct substitution in applications where the mating connector is designed for 7-position, 3.96mm pitch headers with friction lock fastening. The primary difference is the mating contact finish (tin versus gold). Designs requiring gold-plated contacts for enhanced corrosion resistance should retain the TE Connectivity part.

Q: What is the significance of the contact finish difference between these parts?

A: The TE Connectivity part features gold-plated mating contacts (30.0µin thickness), while the Molex substitute uses tin-plated mating contacts (60.0µin thickness). Gold plating provides superior corrosion resistance and contact reliability in high-humidity or corrosive environments. Tin plating is suitable for general purpose, industrial, and controlled environment applications.

Q: Are there dimensional compatibility concerns between these connectors?

A: The connectors differ in overall contact length (0.700" versus 0.720") and insulation height (0.545" versus 0.446"). These variations are within standard manufacturing tolerances for through-hole PCB applications. Verify that the mating connector cavity depth accommodates the 0.720" overall contact length of the Molex part if substituting into existing designs.

Q: Do both parts meet the same regulatory and compliance standards?

A: Both connectors are UL94 V-0 rated, RoHS compliant, REACH unaffected, and classified as EAR99 export control items. The Molex part carries ROHS3 compliance designation, indicating compliance with the most current RoHS directive revision. Both parts have unlimited moisture sensitivity (MSL 1).

Q: What are the application differences between these two connector series?

A: The TE Connectivity MTA-156 series is specified for general purpose and industrial applications. The Molex KK396/41791 series extends to automotive, medical, and telecommunications applications, indicating broader environmental and reliability qualification across multiple industry standards.

Q: How do the insulation materials differ between these parts?

A: The TE Connectivity part uses thermoplastic glass-filled insulation, while the Molex substitute uses polyester glass-filled insulation. Both materials meet UL94 V-0 flammability requirements. Thermoplastic materials typically offer better dimensional stability, while polyester materials provide enhanced chemical resistance in certain environments.