DF7-3P-3.96DS(26) Equivalent & Substitute Parts

Part Overview

The DF7-3P-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 3-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

DF7-3P-3.96DS(26)

Hirose Electric Co LtdIn Stock: 1066DF7-3P-3.96DS(26) 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(26) is determined by strict alignment of the following critical parameters:

• Pitch - Mating: 0.156" (3.96mm) — must match exactly for mechanical and electrical compatibility
• Number of Positions: 3 — connector must accommodate the same circuit count
• Connector Type & Contact Type: Header with Male Pin — maintains board-to-cable/wire interface
• Mounting Type: Through Hole, Right Angle — ensures PCB footprint compatibility
• Shrouding Configuration: Shrouded - 4 Wall — provides mechanical alignment and polarization
• Termination Method: Solder — compatible with existing PCB assembly processes
• Material Flammability Rating: UL94 V-0 — meets safety and regulatory requirements

The TE Connectivity AMP Connectors part 2-647126-3 (MTA-156 series) satisfies all mandatory substitution criteria. Variations in contact finish, insulation height, and operating temperature range do not prevent functional substitution when the above parameters align.

Parameter Comparison

Engineering Selection Recommendations

The TE Connectivity 2-647126-3 (MTA-156 series) is the qualified substitute for the obsolete DF7-3P-3.96DS(26). Selection is based on the following factors:

Product Status: The TE Connectivity part is Active, ensuring ongoing availability and supply chain continuity, whereas the Hirose part is Obsolete.

Compliance & Certifications: Both parts meet UL94 V-0 flammability requirements and carry identical ECCN (EAR99) and HTSUS classifications, confirming regulatory equivalence.

Mechanical Compatibility: Identical pitch (0.156"), position count (3), mounting type (through-hole right-angle), and shrouding configuration (4-wall) ensure direct PCB footprint compatibility.

Electrical Compatibility: Both employ copper alloy contacts with solder termination, maintaining circuit integrity and assembly process compatibility.

Operational Envelope: The TE Connectivity part operates across a wider temperature range (-55°C ~ 105°C versus -35°C ~ 85°C), providing enhanced performance margin in thermal extremes.

Contact Finish Difference: The TE Connectivity part uses tin finish versus gold on the original. Tin finish is standard for industrial rectangular connectors and is compatible with standard solder reflow processes.

Frequently Asked Questions (FAQ)

Q: Can the TE Connectivity 2-647126-3 be used as a direct replacement for the DF7-3P-3.96DS(26)?

A: Yes. Both connectors share identical pitch (0.156"), position count (3), mounting configuration (through-hole right-angle), and shrouding (4-wall). PCB footprints are compatible, and solder termination processes are identical.

Q: What is the significance of the different contact finish (gold vs. tin)?

A: Contact finish does not affect substitution eligibility. Gold provides enhanced corrosion resistance; tin is the industry standard for general-purpose rectangular connectors. Both finishes are compatible with standard solder reflow and wave soldering processes.

Q: Why is the insulation height different between the two parts?

A: Insulation height (0.303" vs. 0.455") reflects design differences between manufacturers but does not impact electrical or mechanical compatibility. The taller insulation on the TE part provides additional mechanical support and does not interfere with standard PCB layouts.

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

A: No. The TE Connectivity part's extended temperature range (-55°C ~ 105°C) is a performance advantage and does not create compatibility issues. It accommodates a broader range of operating environments.

Q: Are there any fastening type differences to consider?

A: The original uses a Latch Holder fastening type; the substitute uses Friction Lock. Both are standard retention mechanisms for board-to-cable connections and do not affect substitution suitability.

Q: What is the inventory status for the substitute part?

A: The TE Connectivity 2-647126-3 has 602 pieces in stock as new original inventory, ensuring immediate availability for replacement applications.