DF7-7P-3.96DS(26) Equivalent & Substitute Parts

Part Overview

The DF7-7P-3.96DS(26) is a rectangular connector header manufactured by Hirose Electric Co Ltd, designed for through-hole, right-angle board-to-cable/wire applications. This 7-position connector operates at 0.156" (3.96mm) pitch with shrouded 4-wall construction and solder termination. The product is currently obsolete, making identification of functionally equivalent alternatives essential for ongoing system support, maintenance, and new production runs where legacy compatibility is required.

Substiute Parts

DF7-7P-3.96DS(26)

Hirose Electric Co LtdIn Stock: 817DF7-7P-3.96DS(26) Datasheet

Current PartRFQ

2-647126-7

TE Connectivity AMP ConnectorsIn Stock: 11892-647126-7 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the DF7-7P-3.96DS(26) is determined by strict alignment of the following parameters:

• Pitch - Mating: Must be 0.156" (3.96mm) to ensure mechanical and electrical compatibility with mating connectors
• Number of Positions: Must be 7 to maintain circuit topology and pin count
• Number of Rows: Must be 1 to preserve board layout footprint
• Connector Type: Must be Header to match the board-to-cable/wire interface requirement
• Contact Type: Must be Male Pin for proper mating with female receptacles
• Mounting Type: Must be Through Hole, Right Angle to fit existing PCB designs
• Shrouding: Must be Shrouded - 4 Wall to maintain keying and polarization
• Termination: Must be Solder for PCB assembly compatibility
• Contact Material: Must be Copper Alloy to ensure electrical conductivity
• Material Flammability Rating: Must be UL94 V-0 to meet safety standards

The TE Connectivity AMP Connectors part 2-647126-7 (MTA-156 series) meets all mandatory substitution criteria and is classified as an active product with enhanced operating temperature range and compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

The TE Connectivity 2-647126-7 is a direct functional substitute for the obsolete Hirose DF7-7P-3.96DS(26). Selection of the substitute part is supported by the following factors:

• Product Status: The TE Connectivity part is active and in production, ensuring long-term availability and supply chain continuity
• Compliance: Both parts carry UL94 V-0 flammability certification and meet EAR99 export classification requirements
• RoHS Compliance: The TE Connectivity part is RoHS Compliant, meeting modern environmental and regulatory standards
• Operating Temperature: The substitute part extends the operating range to -55°C ~ 105°C, providing enhanced thermal performance beyond the original specification
• Electrical Rating: The substitute part specifies 600VAC voltage rating, providing documented electrical performance parameters
• Mechanical Compatibility: Identical pitch, position count, mounting type, and shrouding ensure direct PCB footprint compatibility

Minor differences in contact finish (Gold vs. Tin) and insulation material composition do not affect functional substitution for standard board-to-cable/wire applications within the specified operating parameters.

Frequently Asked Questions (FAQ)

Q: Can the TE Connectivity 2-647126-7 be used as a direct replacement for the Hirose DF7-7P-3.96DS(26)?

A: Yes. Both connectors share identical pitch (0.156"), position count (7), row configuration (1), mounting type (through-hole right-angle), shrouding (4-wall), and termination method (solder). The substitute part meets all mandatory mechanical and electrical compatibility requirements.

Q: What is the difference between the Gold contact finish on the Hirose part and the Tin finish on the TE Connectivity part?

A: Contact finish differences do not affect functional substitution for standard applications. Both materials provide adequate electrical conductivity and corrosion resistance. The choice between Gold and Tin is typically driven by cost considerations and specific environmental exposure requirements, neither of which alters the connector's core functionality in board-to-cable/wire configurations.

Q: Does the extended operating temperature range of the TE Connectivity part affect compatibility?

A: No. The TE Connectivity part operates from -55°C ~ 105°C, which encompasses the original Hirose specification of -35°C ~ 85°C. The extended range provides additional thermal margin and does not introduce compatibility issues.

Q: Are there any PCB layout or footprint changes required when switching from the Hirose to the TE Connectivity connector?

A: No. Both connectors have identical mounting type (through-hole, right-angle), pitch (0.156"), and shrouding configuration (4-wall). PCB footprints are directly compatible without modification.

Q: What is the significance of the RoHS Compliance status on the TE Connectivity part?

A: RoHS Compliance indicates the part meets Restriction of Hazardous Substances regulations, restricting lead, cadmium, mercury, and other hazardous materials. This is a regulatory requirement for many markets and applications. The Hirose part's RoHS status was not specified in the original documentation.

Q: Can the TE Connectivity MTA-156 series be used interchangeably with other 0.156" pitch connector series?

A: Substitution is limited to connectors meeting all specified parameters: 7 positions, 1 row, shrouded 4-wall construction, solder termination, and male pin contact type. Pitch alone does not determine compatibility; all mechanical and electrical parameters must align.