DF7-4P-3.96DS(25) Equivalent & Substitute Parts

Part Overview

The DF7-4P-3.96DS(25) is a rectangular connector header manufactured by Hirose Electric Co Ltd, designed for through-hole, right-angle board-to-cable/wire applications. This 4-position connector operates at 0.156" (3.96mm) pitch with shrouded 4-wall construction and solder termination. The product is currently obsolete, making equivalent substitute parts necessary for ongoing maintenance, repair, and legacy system support where original components are no longer available.

Substiute Parts

DF7-4P-3.96DS(25)

Hirose Electric Co LtdIn Stock: 905DF7-4P-3.96DS(25) Datasheet

Current PartRFQ

2-647126-4

TE Connectivity AMP ConnectorsIn Stock: 9752-647126-4 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the DF7-4P-3.96DS(25) is determined by strict alignment of the following critical parameters:

• Pitch - Mating: Must be 0.156" (3.96mm) to ensure mechanical and electrical compatibility with mating connectors
• Number of Positions: Must be 4 to match circuit board layout and wiring harness design
• Number of Rows: Must be 1 to maintain single-row configuration
• Connector Type: Must be Header for board-mounted applications
• Contact Type: Must be Male Pin for compatibility with female receptacles
• Mounting Type: Must be Through Hole, Right Angle to fit existing PCB footprints
• 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 for electrical conductivity
• Insulation Material: Must be glass-filled thermoplastic or polyamide for mechanical strength
• Material Flammability Rating: Must meet UL94 V-0 for safety compliance

The TE Connectivity AMP Connectors part number 2-647126-4 (MTA-156 series) meets all critical substitution parameters and is classified as an active product with enhanced operating temperature range and RoHS compliance.

Parameter Comparison

Engineering Selection Recommendations

The TE Connectivity 2-647126-4 (MTA-156 series) is the qualified substitute for the obsolete Hirose DF7-4P-3.96DS(25). Selection is based on the following engineering criteria:

Product Status: The TE Connectivity part is active and in current production, ensuring long-term availability and supply chain continuity for legacy system support and repair applications.

Compliance & Certifications: Both connectors meet UL94 V-0 flammability requirements. The TE Connectivity part carries RoHS compliance certification, meeting modern environmental and regulatory standards for new production and retrofit applications.

Electrical & Mechanical Compatibility: Both connectors share identical pitch (0.156"), position count (4), row configuration (1), contact type (male pin), mounting method (through-hole right-angle), shrouding (4-wall), and termination (solder). These parameters ensure direct functional equivalence in board-to-cable/wire applications.

Operating Envelope: The TE Connectivity part provides an extended operating temperature range (-55°C ~ 105°C) compared to the original (-35°C ~ 85°C), offering improved performance margin in thermal stress environments.

Physical Dimensions: Minor dimensional variations exist in contact length and insulation height. The TE Connectivity part features slightly longer mating contact length (0.300" vs 0.276") and greater insulation height (0.455" vs 0.303"), which may require PCB footprint verification for applications with tight spatial constraints.

Frequently Asked Questions (FAQ)

Q: Can the TE Connectivity 2-647126-4 be used as a direct replacement for the Hirose DF7-4P-3.96DS(25)?

A: Yes. Both connectors share identical pitch (0.156"), position count (4), row configuration, contact type, mounting method, and shrouding. The TE Connectivity part meets all critical substitution parameters and is electrically and mechanically compatible with existing mating connectors and PCB designs.

Q: What are the key differences between these two connectors?

A: The primary differences are: (1) Product status—TE Connectivity is active versus Hirose obsolete; (2) Operating temperature range—TE Connectivity extends to -55°C ~ 105°C versus -35°C ~ 85°C; (3) Fastening mechanism—TE Connectivity uses friction lock versus Hirose latch holder; (4) Insulation height—TE Connectivity is 0.455" versus Hirose 0.303"; (5) RoHS compliance—TE Connectivity is RoHS compliant; (6) Insulation color—TE Connectivity is black versus Hirose beige.

Q: Will the TE Connectivity connector fit the existing PCB footprint?

A: The connectors share identical pitch and mounting type (through-hole right-angle). However, the TE Connectivity part has greater insulation height (0.455" vs 0.303"). Verify PCB footprint clearance, particularly for applications with limited vertical space or adjacent components.

Q: Are there any compatibility concerns with mating connectors?

A: No. Both connectors use identical 0.156" (3.96mm) pitch, male pin contact type, and square contact shape. They are compatible with the same female receptacles and mating connectors.

Q: What is the difference in fastening mechanism?

A: The Hirose DF7 uses a latch holder fastening type, while the TE Connectivity MTA-156 uses friction lock. Both provide secure mating; the friction lock mechanism in the TE Connectivity part may require slightly different insertion force characteristics.

Q: Is the TE Connectivity part suitable for new production designs?

A: Yes. The TE Connectivity 2-647126-4 is an active product with RoHS compliance, making it suitable for new production, retrofit applications, and legacy system support where the original Hirose part is no longer available.