DF7-9P-3.96DSA Equivalent & Substitute Parts

Part Overview

The DF7-9P-3.96DSA is a rectangular connector header manufactured by Hirose Electric Co Ltd, designed for through-hole mounting in board-to-cable/wire applications. This 9-position connector features a 0.156" (3.96mm) pitch and shrouded 4-wall design with solder termination. The product is currently obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and component procurement.

Substiute Parts

DF7-9P-3.96DSA

Hirose Electric Co LtdIn Stock: 779DF7-9P-3.96DSA Datasheet

Current PartRFQ

B9P-VH-FB-B

JST Sales America Inc.In Stock: 1228B9P-VH-FB-B Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the DF7-9P-3.96DSA is determined by strict equivalence across the following critical parameters:

• Connector Type & Contact Configuration: Header with male pins
• Position Count & Pitch: 9 positions at 0.156" (3.96mm) mating pitch
• Mounting & Termination: Through-hole solder termination
• Shrouding & Mechanical Design: Shrouded 4-wall construction with board guide
• Contact Material & Finish: Copper alloy with tin plating
• Electrical & Environmental Ratings: UL94 V-0 flammability compliance

The B9P-VH-FB-B from JST Sales America Inc. meets these core substitution criteria. Both connectors share identical position count, pitch spacing, mounting method, shrouding configuration, and contact material specifications. Variations in insulation material composition, contact post length, and fastening mechanism (locking ramp vs. latch holder) do not preclude functional equivalence in standard board-to-cable applications.

Parameter Comparison

Engineering Selection Recommendations

The B9P-VH-FB-B serves as a direct functional substitute for the obsolete DF7-9P-3.96DSA. Key selection factors include:

Product Status: The DF7-9P-3.96DSA is obsolete, while the B9P-VH-FB-B maintains active production status, ensuring long-term availability and supply chain continuity.

Regulatory Compliance: The B9P-VH-FB-B achieves ROHS3 compliance, whereas the DF7-9P-3.96DSA is RoHS non-compliant. Both connectors meet UL94 V-0 flammability requirements.

Mechanical Compatibility: Both connectors maintain identical pitch spacing (0.156"), position count (9), shrouding configuration (4-wall), and mounting method (through-hole solder). Minor dimensional variations in insulation height (0.508" vs. 0.433") and contact post length (0.138" vs. 0.146") are within acceptable tolerances for standard board-to-cable interconnect applications.

Thermal Operating Range: The DF7-9P-3.96DSA operates from -35°C to 85°C, while the B9P-VH-FB-B operates from -25°C to 85°C. Applications requiring operation below -25°C require evaluation of the lower temperature limit.

Electrical Ratings: The B9P-VH-FB-B provides specified electrical ratings (10A at 250V), whereas the DF7-9P-3.96DSA does not include published current or voltage specifications.

Frequently Asked Questions (FAQ)

Q: Can the B9P-VH-FB-B directly replace the DF7-9P-3.96DSA in existing designs?

A: Yes. Both connectors share identical pitch spacing, position count, shrouding design, and solder termination. The mechanical and electrical interfaces are compatible for standard board-to-cable applications. Minor dimensional differences in insulation height and contact post length do not affect functional compatibility.

Q: What is the difference between the latch holder and locking ramp fastening mechanisms?

A: The DF7-9P-3.96DSA uses a latch holder mechanism, while the B9P-VH-FB-B uses a locking ramp. Both mechanisms provide secure mating and demating. The specific fastening design does not affect electrical performance or pitch compatibility.

Q: Are there thermal operating range limitations when substituting?

A: The DF7-9P-3.96DSA operates from -35°C to 85°C, while the B9P-VH-FB-B operates from -25°C to 85°C. Applications requiring operation below -25°C should retain the original DF7-9P-3.96DSA or identify alternative solutions rated for lower temperatures.

Q: What is the significance of the insulation material difference?

A: The DF7-9P-3.96DSA uses polyamide (PA) nylon with glass fill, while the B9P-VH-FB-B uses polybutylene terephthalate (PBT) with glass fill. Both materials provide UL94 V-0 flammability compliance and are suitable for standard industrial and commercial applications. Material selection does not affect electrical performance or mechanical compatibility.

Q: Does the RoHS compliance difference affect substitution?

A: The B9P-VH-FB-B is ROHS3 compliant, while the DF7-9P-3.96DSA is RoHS non-compliant. For applications subject to RoHS regulations, the B9P-VH-FB-B is the appropriate choice. For legacy systems without RoHS requirements, both connectors are functionally equivalent.

Q: What packaging is available for the B9P-VH-FB-B?

A: The B9P-VH-FB-B is supplied in bulk packaging, with 1133 pieces currently in stock.