DF7-3P-3.96DS(25) Equivalent & Substitute Parts

Part Overview

The DF7-3P-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 3-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

DF7-3P-3.96DS(25)

Hirose Electric Co LtdIn Stock: 949DF7-3P-3.96DS(25) Datasheet

Current PartRFQ

2-647126-3

TE Connectivity AMP ConnectorsIn Stock: 7082-647126-3 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the DF7-3P-3.96DS(25) is determined by strict alignment of the following parameters:

• Pitch - Mating: 0.156" (3.96mm) — mechanical and electrical interface requirement
• Number of Positions: 3 — circuit configuration requirement
• Number of Rows: 1 — physical layout requirement
• Connector Type: Header — functional role requirement
• Contact Type: Male Pin — mating interface requirement
• Mounting Type: Through Hole, Right Angle — PCB assembly requirement
• Shrouding: Shrouded - 4 Wall — mechanical protection and alignment requirement
• Termination: Solder — assembly process requirement
• Contact Material & Finish: Copper Alloy with Tin — electrical conductivity and corrosion resistance requirement
• Material Flammability Rating: UL94 V-0 — safety compliance requirement
• Moisture Sensitivity Level: 1 (Unlimited) — storage and handling requirement

The TE Connectivity AMP Connectors part 2-647126-3 (MTA-156 series) meets all mandatory substitution criteria. This part maintains electrical and mechanical compatibility while offering active product status and extended operating temperature range.

Parameter Comparison

Engineering Selection Recommendations

The TE Connectivity AMP Connectors 2-647126-3 is a direct functional equivalent for the obsolete Hirose DF7-3P-3.96DS(25). Selection is supported by the following factors:

• All mandatory electrical and mechanical parameters align with the original specification
• The substitute part carries active product status, ensuring long-term availability and supply chain continuity
• UL94 V-0 flammability rating is maintained, preserving safety compliance
• Extended operating temperature range (-55°C ~ 105°C) provides thermal margin beyond the original specification (-35°C ~ 85°C)
• RoHS compliance of the substitute part meets current regulatory requirements
• Moisture Sensitivity Level 1 (Unlimited) classification matches the original, eliminating special storage or handling requirements

The substitute part is suitable for direct replacement in new production, maintenance, and retrofit applications where the DF7-3P-3.96DS(25) was originally specified.

Frequently Asked Questions (FAQ)

Q: Can the TE Connectivity 2-647126-3 be used as a direct replacement for the Hirose DF7-3P-3.96DS(25)?

A: Yes. Both parts share identical pitch (0.156"), position count (3), row configuration (1), mounting type (through-hole right-angle), shrouding (4-wall), and termination method (solder). Electrical and mechanical interfaces are fully compatible.

Q: What is the difference in contact finish thickness between the two parts?

A: The Hirose part does not specify contact finish thickness. The TE Connectivity substitute provides 150.0µin (3.81µm) tin plating on both mating and post contacts, ensuring consistent corrosion resistance and electrical performance.

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

A: No. The TE Connectivity part operates from -55°C to 105°C, which encompasses the original specification range of -35°C to 85°C. This provides additional thermal margin without compromising compatibility.

Q: Are there any differences in insulation material between the parts?

A: The Hirose part specifies Polyamide (PA) Nylon, Glass Filled insulation. The TE Connectivity part uses Thermoplastic, Glass Filled insulation. Both materials are glass-filled polymers with equivalent mechanical and electrical properties for this application.

Q: What is the fastening type difference between these connectors?

A: The Hirose part uses a Latch Holder fastening mechanism. The TE Connectivity part uses Friction Lock fastening. Both provide secure mating without requiring external fasteners, suitable for board-to-cable/wire connections.

Q: Is the substitute part RoHS compliant?

A: Yes. The TE Connectivity 2-647126-3 is RoHS Compliant, meeting current environmental and regulatory requirements. The original Hirose part status is not specified in available documentation.

Q: Can these connectors be used interchangeably in existing cable assemblies?

A: Yes, provided the mating connector (receptacle) is compatible with the 0.156" (3.96mm) pitch and 3-position header configuration. Both parts maintain identical mating interface geometry and contact arrangement.