MDF7-7P-2.54DS(56) Equivalent & Substitute Parts

Part Overview

The MDF7-7P-2.54DS(56) is a rectangular connector header manufactured by Hirose Electric Co Ltd, designed for through-hole, right-angle board-to-board applications with 7 positions at 0.100" (2.54mm) pitch. This connector features male pins with gold-plated brass contacts and is rated for 3A at 250V operation across -35°C to 85°C. The part is currently classified as obsolete, making identification of active equivalent alternatives essential for ongoing production and maintenance applications.

Key Parameters

Parameter	Value
Manufacturer Part Number	MDF7-7P-2.54DS(56)
Manufacturer	Hirose Electric Co Ltd
Series	MDF7
Connector Type	Header
Contact Type	Male Pin
Number of Positions	7
Pitch - Mating	0.100" (2.54mm)
Mounting Type	Through Hole, Right Angle
Current Rating	3A
Voltage Rating	250V
Operating Temperature	-35°C ~ 85°C
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution eligibility for the MDF7-7P-2.54DS(56) is determined by the following critical parameters:

Connector Series & Pitch: Both parts must belong to the MDF7 series with 0.100" (2.54mm) mating pitch to ensure mechanical and electrical compatibility
Position Count & Configuration: 7-position, single-row header configuration must be maintained
Contact Type & Material: Male pin contacts with brass material and gold plating ensure equivalent electrical performance
Electrical Ratings: Current rating of 3A and voltage rating of 250V must be met or exceeded
Mounting & Termination: Through-hole, right-angle mounting with solder termination is required
Environmental Compliance: RoHS compliance and UL94 V-0 flammability rating must be maintained

The MDF7-7P-2.54DS(96) qualifies as a direct substitute based on these parameters, with the primary distinction being its active product status and board-to-cable/wire application style versus the original board-to-board configuration.

Parameter Comparison

Parameter	MDF7-7P-2.54DS(56)	MDF7-7P-2.54DS(96)
Manufacturer	Hirose Electric Co Ltd	Hirose Electric Co Ltd
Series	MDF7	MDF7
Connector Type	Header	Header
Contact Type	Male Pin	Male Pin
Number of Positions	7	7
Pitch - Mating	0.100" (2.54mm)	0.100" (2.54mm)
Number of Rows	1	1
Mounting Type	Through Hole, Right Angle	Through Hole, Right Angle
Termination	Solder	Solder
Fastening Type	Push-Pull	Push-Pull
Contact Length - Mating	0.292" (7.42mm)	0.293" (7.45mm)
Contact Length - Post	0.130" (3.30mm)	0.130" (3.30mm)
Insulation Height	0.157" (4.00mm)	0.157" (4.00mm)
Contact Shape	Square	Square
Contact Finish - Mating	Gold	Gold
Contact Material	Brass	Brass
Insulation Material	Polybutylene Terephthalate (PBT)	Polybutylene Terephthalate (PBT)
Operating Temperature	-35°C ~ 85°C	-35°C ~ 85°C
Material Flammability Rating	UL94 V-0	UL94 V-0
Insulation Color	Black	Black
Current Rating	3A	3A
Voltage Rating	250V	250VAC
RoHS Status	RoHS Compliant	RoHS Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)
Product Status	Obsolete	Active
Style	Board to Board	Board to Cable/Wire

Engineering Selection Recommendations

The MDF7-7P-2.54DS(96) is the qualified substitute for the obsolete MDF7-7P-2.54DS(56). Both parts maintain identical electrical specifications (3A, 250V), mechanical dimensions, and environmental compliance certifications. The MDF7-7P-2.54DS(96) carries active product status from Hirose Electric Co Ltd, ensuring continued availability and manufacturing support.

The primary functional distinction is the application style: the original part is configured for board-to-board connections, while the substitute is designed for board-to-cable/wire applications. This difference reflects connector interface design rather than electrical or thermal performance. Both parts are RoHS compliant and rated UL94 V-0, meeting current regulatory requirements.

Frequently Asked Questions (FAQ)

Q: Can the MDF7-7P-2.54DS(96) directly replace the MDF7-7P-2.54DS(56) in existing designs?

A: Yes. Both connectors share identical pitch (0.100"/2.54mm), position count (7), contact configuration (male pin), electrical ratings (3A/250V), and operating temperature range (-35°C to 85°C). The mechanical dimensions are equivalent within tolerance. The application style difference (board-to-board versus board-to-cable/wire) refers to the connector's intended mating interface, not its physical compatibility on the PCB side.

Q: What is the significance of the product status change from Obsolete to Active?

A: The MDF7-7P-2.54DS(56) is no longer manufactured by Hirose Electric Co Ltd. The MDF7-7P-2.54DS(96) is currently in active production, ensuring supply chain continuity, consistent quality control, and manufacturer technical support for new designs and production runs.

Q: Are there packaging differences between these parts?

A: The MDF7-7P-2.54DS(56) packaging is not specified in available data. The MDF7-7P-2.54DS(96) is supplied in bag packaging. Confirm packaging requirements with your procurement specifications.

Q: Do both connectors meet the same compliance standards?

A: Yes. Both parts are RoHS compliant and carry UL94 V-0 flammability ratings. Both have Moisture Sensitivity Level 1 (Unlimited), indicating no special moisture handling requirements during storage or assembly.

Q: What is the difference between 250V and 250VAC voltage ratings?

A: The MDF7-7P-2.54DS(56) is rated 250V (unspecified AC/DC), while the MDF7-7P-2.54DS(96) is explicitly rated 250VAC. For DC applications, verify that 250VAC rating is acceptable for your circuit requirements. Both ratings are suitable for standard low-voltage signal and power distribution applications.

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