DF7-10P-3.96DS(25) Equivalent & Substitute Parts

Part Overview

The DF7-10P-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 10-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.

Key Parameters

Parameter	Value
Connector Type	Header
Contact Type	Male Pin
Pitch - Mating	0.156" (3.96mm)
Number of Positions	10
Number of Rows	1
Mounting Type	Through Hole, Right Angle
Shrouding	Shrouded - 4 Wall
Termination	Solder
Contact Material	Copper Alloy
Insulation Material	Polyamide (PA), Nylon, Glass Filled
Operating Temperature	-35°C ~ 85°C
Material Flammability Rating	UL94 V-0

Substitute Part Grouping Explanation

Substitution for the DF7-10P-3.96DS(25) is determined by strict alignment of the following critical parameters:

Pitch - Mating: 0.156" (3.96mm) — determines mechanical and electrical compatibility with mating connectors
Number of Positions: 10 — ensures circuit board layout compatibility
Number of Rows: 1 — maintains single-row configuration
Connector Type: Header with Male Pin contacts
Mounting Type: Through Hole, Right Angle — preserves PCB assembly method
Shrouding: Shrouded - 4 Wall — maintains polarization and mechanical protection
Termination: Solder — ensures compatibility with existing assembly processes
Contact Material: Copper Alloy — maintains electrical performance
Material Flammability Rating: UL94 V-0 — preserves safety compliance

The TE Connectivity AMP Connectors part 3-647126-0 (MTA-156 series) meets all critical substitution criteria. This part is active in production, providing long-term availability for legacy system support.

Parameter Comparison

Parameter	DF7-10P-3.96DS(25) (Hirose)	3-647126-0 (TE Connectivity)	Compatibility
Connector Type	Header	Header	Match
Contact Type	Male Pin	Male Pin	Match
Pitch - Mating	0.156" (3.96mm)	0.156" (3.96mm)	Match
Number of Positions	10	10	Match
Number of Rows	1	1	Match
Mounting Type	Through Hole, Right Angle	Through Hole, Right Angle	Match
Shrouding	Shrouded - 4 Wall	Shrouded - 4 Wall	Match
Termination	Solder	Solder	Match
Contact Material	Copper Alloy	Copper Alloy	Match
Material Flammability Rating	UL94 V-0	UL94 V-0	Match
Operating Temperature	-35°C ~ 85°C	-55°C ~ 105°C	Substitute exceeds range
Product Status	Obsolete	Active	Substitute in production
Contact Length - Mating	0.276" (7.00mm)	0.300" (7.62mm)	Variation within tolerance
Insulation Height	0.303" (7.70mm)	0.455" (11.56mm)	Substitute taller

Engineering Selection Recommendations

The 3-647126-0 (TE Connectivity MTA-156) is a direct functional substitute for the obsolete DF7-10P-3.96DS(25). Selection is based on the following engineering factors:

Product Status: The substitute is active in production, ensuring long-term availability and supply chain continuity for legacy system maintenance and repair.
Compliance: Both parts carry UL94 V-0 flammability rating, meeting identical safety standards.
Critical Parameter Alignment: All essential parameters—pitch, position count, mounting type, shrouding, and termination method—are identical.
Operating Temperature: The substitute operates across a wider temperature range (-55°C ~ 105°C) compared to the original (-35°C ~ 85°C), providing enhanced thermal performance for demanding applications.
Mechanical Dimensions: Minor variations in contact length and insulation height fall within acceptable tolerances for board-to-cable/wire applications and do not affect functional compatibility.

Frequently Asked Questions (FAQ)

Q: Can the 3-647126-0 be used as a direct replacement for the DF7-10P-3.96DS(25)?

A: Yes. Both connectors share identical pitch (0.156"), position count (10), mounting type (through-hole right-angle), shrouding (4-wall), and termination method (solder). The substitute is mechanically and electrically compatible with existing mating connectors and PCB layouts designed for the original part.

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

A: The primary differences are product status (substitute is active vs. original is obsolete), operating temperature range (substitute: -55°C to 105°C vs. original: -35°C to 85°C), contact length (substitute: 0.300" vs. original: 0.276"), and insulation height (substitute: 0.455" vs. original: 0.303"). These variations do not affect functional substitution for standard board-to-cable/wire applications.

Q: Are there any compatibility concerns with PCB assembly?

A: No. Both connectors use identical through-hole, right-angle mounting and solder termination. The increased insulation height of the substitute does not create assembly conflicts and may provide additional mechanical stability.

Q: Does the substitute meet the same safety standards?

A: Yes. Both parts carry UL94 V-0 material flammability rating, meeting identical safety compliance requirements.

Q: Why is the original part obsolete?

A: The DF7-10P-3.96DS(25) is no longer in production. The TE Connectivity MTA-156 series provides equivalent functionality with active manufacturing support for ongoing system maintenance and repair applications.

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