MDF7-20D-2.54DSA Equivalent & Substitute Parts

Part Overview

The MDF7-20D-2.54DSA is a 20-position rectangular receptacle connector manufactured by Hirose Electric Co Ltd, designed for board-to-board applications with 0.100" (2.54mm) pitch through-hole mounting. This connector features a bottom-entry configuration with female socket contacts, tin plating on mating surfaces, and a push-pull fastening mechanism. The product is currently obsolete, making identification of compatible substitute parts essential for ongoing system support and component procurement.

Substiute Parts

MDF7-20D-2.54DSA

Hirose Electric Co LtdIn Stock: 1160MDF7-20D-2.54DSA Datasheet

Current PartRFQ

MDF7-20D-2.54DSA(56)

Hirose Electric Co LtdIn Stock: 978MDF7-20D-2.54DSA(56) Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MDF7-20D-2.54DSA is determined by strict adherence to the following electrical and mechanical parameters:

Critical Parameters (Must Match Exactly):

• Connector type: Receptacle, bottom entry
• Number of positions: 20
• Pitch - mating: 0.100" (2.54mm)
• Number of rows: 2
• Row spacing - mating: 0.100" (2.54mm)
• Mounting type: Through hole
• Contact type: Female socket
• Current rating: 3A
• Voltage rating: 250VAC
• Operating temperature range: -35°C ~ 85°C
• Material flammability rating: UL94 V-0
• Fastening type: Push-pull

Allowable Variations:

• Contact finish on mating surface (tin or gold plating)
• Contact finish thickness on mating surface
• Product status (active or obsolete)
• RoHS compliance status
• Packaging configuration

The MDF7-20D-2.54DSA(56) qualifies as a direct substitute based on these criteria. Both parts share identical mechanical and electrical specifications within the MDF7 series, with the primary difference being the contact finish material on the mating surface.

Parameter Comparison

Engineering Selection Recommendations

The MDF7-20D-2.54DSA(56) is a direct functional equivalent to the MDF7-20D-2.54DSA. Both connectors maintain identical mechanical and electrical specifications, ensuring pin-for-pin compatibility in board-to-board applications.

The primary distinction between these parts is product status and regulatory compliance. The MDF7-20D-2.54DSA(56) is currently in active production status, whereas the original MDF7-20D-2.54DSA is obsolete. Additionally, the substitute part achieves ROHS3 compliance, compared to the non-compliant status of the original part. These factors make the MDF7-20D-2.54DSA(56) the preferred selection for new designs and ongoing procurement requirements.

The contact finish difference (gold versus tin on the mating surface) does not affect electrical performance or mechanical compatibility. Both finishes support the specified 3A current rating and 250VAC voltage rating across the operating temperature range of -35°C to 85°C.

Frequently Asked Questions (FAQ)

Q: Are the MDF7-20D-2.54DSA and MDF7-20D-2.54DSA(56) mechanically interchangeable?

A: Yes. Both connectors share identical mechanical specifications, including 20-position configuration, 0.100" (2.54mm) pitch, 2-row layout, through-hole mounting, and push-pull fastening. They are directly interchangeable in board-to-board applications.

Q: What is the difference between tin and gold contact finishes on the mating surface?

A: The MDF7-20D-2.54DSA features tin plating at 39.4µin (1.00µm) thickness, while the MDF7-20D-2.54DSA(56) features gold plating at 8.00µin (0.203µm) thickness. Both finishes support the same electrical specifications (3A current, 250VAC voltage) and operating temperature range. Gold plating typically offers enhanced corrosion resistance in high-humidity or corrosive environments.

Q: Can I use the MDF7-20D-2.54DSA(56) as a replacement for the obsolete MDF7-20D-2.54DSA?

A: Yes. The MDF7-20D-2.54DSA(56) is functionally equivalent and maintains all critical electrical and mechanical parameters. The substitute part is in active production, making it the appropriate selection for component replacement and new procurement.

Q: What is the significance of ROHS3 compliance on the substitute part?

A: ROHS3 compliance indicates the MDF7-20D-2.54DSA(56) meets current regulatory requirements for restricted hazardous substances. The original MDF7-20D-2.54DSA is non-compliant with these standards. For applications subject to regulatory compliance requirements, the substitute part is the appropriate selection.

Q: Are there any electrical performance differences between these connectors?

A: No. Both parts maintain identical electrical specifications: 3A current rating, 250VAC voltage rating, and -35°C to 85°C operating temperature range. The UL94 V-0 flammability rating is identical on both parts.

Q: What packaging options are available?

A: The MDF7-20D-2.54DSA is available in standard packaging, while the MDF7-20D-2.54DSA(56) is available in bulk packaging. Packaging configuration does not affect connector performance or compatibility.