DF7-8P-3.96DS(25) Equivalent & Substitute Parts

Part Overview

The DF7-8P-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 8-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

DF7-8P-3.96DS(25)

Hirose Electric Co LtdIn Stock: 1157DF7-8P-3.96DS(25) Datasheet

Current PartRFQ

2-647126-8

TE Connectivity AMP ConnectorsIn Stock: 9582-647126-8 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the DF7-8P-3.96DS(25) is determined by strict alignment of the following critical parameters:

• Pitch - Mating: 0.156" (3.96mm) — must match exactly for mechanical compatibility
• Number of Positions: 8 — connector must accommodate identical pin count
• Number of Rows: 1 — single-row configuration required
• Connector Type: Header — male pin contact type for board-to-cable/wire interface
• Mounting Type: Through Hole, Right Angle — PCB mounting orientation and angle must be identical
• Shrouding: Shrouded - 4 Wall — mechanical keying and polarization requirement
• Termination: Solder — connection method to PCB
• Contact Material & Finish: Copper Alloy with Tin finish — electrical conductivity and corrosion resistance
• Insulation Material: Glass-filled thermoplastic or polyamide — mechanical strength and thermal stability
• Flammability Rating: UL94 V-0 — safety compliance requirement
• Operating Temperature Range: Must support -35°C ~ 85°C minimum

The TE Connectivity AMP Connectors part 2-647126-8 (MTA-156 series) meets all critical substitution criteria while offering active product status and enhanced operating temperature range.

Parameter Comparison

Engineering Selection Recommendations

The TE Connectivity AMP Connectors part 2-647126-8 is the qualified substitute for the obsolete DF7-8P-3.96DS(25). Selection is based on the following engineering criteria:

Mechanical & Electrical Compatibility: All critical parameters align exactly — pitch, position count, row configuration, mounting type, shrouding, and termination method are identical. The connector will function as a direct replacement in existing PCB designs without layout modification.

Product Status & Availability: The DF7-8P-3.96DS(25) is obsolete with no ongoing manufacturing. The 2-647126-8 maintains active product status with current inventory availability (913 pcs in stock), ensuring supply chain continuity for repair and maintenance applications.

Compliance & Certifications: Both connectors meet UL94 V-0 flammability requirements and maintain MSL 1 (Unlimited) moisture sensitivity classification. The substitute carries RoHS Compliance certification, meeting modern environmental and safety standards.

Operating Performance: The substitute connector supports an extended operating temperature range (-55°C ~ 105°C) compared to the original (-35°C ~ 85°C), providing enhanced thermal margin for demanding applications. Voltage rating of 600VAC and current rating varying by wire gauge meet or exceed typical board-to-cable interface requirements.

Frequently Asked Questions (FAQ)

Q: Can the 2-647126-8 be used as a direct replacement for the DF7-8P-3.96DS(25)?

A: Yes. Both connectors share identical pitch (0.156"), position count (8), row configuration (1), mounting type (through-hole right-angle), shrouding (4-wall), and termination method (solder). No PCB redesign or layout modification is required.

Q: What are the key differences between these connectors?

A: The primary differences are product status (obsolete vs. active), operating temperature range (-35°C ~ 85°C vs. -55°C ~ 105°C), insulation material composition (polyamide vs. thermoplastic), and fastening mechanism (latch holder vs. friction lock). The substitute offers superior thermal performance and modern compliance certifications.

Q: Are there any mechanical dimension concerns?

A: Contact length and insulation height differ slightly between the two connectors. The DF7-8P-3.96DS(25) has a contact mating length of 0.276" (7.00mm) and insulation height of 0.303" (7.70mm), while the 2-647126-8 has a contact mating length of 0.300" (7.62mm) and insulation height of 0.455" (11.56mm). These variations are within acceptable tolerance for standard board-to-cable applications but should be verified against specific PCB cavity and mating connector specifications.

Q: What compliance certifications apply to the substitute part?

A: The 2-647126-8 is RoHS Compliant and carries UL94 V-0 flammability rating. Both connectors are classified as MSL 1 (Unlimited) for moisture sensitivity. The substitute meets current environmental and safety standards for industrial and general-purpose applications.

Q: Is the substitute part suitable for high-temperature applications?

A: The 2-647126-8 supports operating temperatures from -55°C to 105°C, providing a 20°C higher upper limit than the original DF7-8P-3.96DS(25). This extended range makes it suitable for applications requiring enhanced thermal performance within the specified operating envelope.