MDF7-3S-2.54DSA(55) Equivalent & Substitute Parts

Part Overview

The MDF7-3S-2.54DSA(55) is a 3-position receptacle connector manufactured by Hirose Electric Co Ltd, designed for board-to-board applications with bottom entry configuration and 0.100" (2.54mm) pitch. This connector features through-hole solder termination, tin-plated contacts, and operates across -35°C to 85°C with a 3A current rating at 250VAC. The part is currently listed as obsolete, necessitating identification of active equivalent alternatives to maintain design continuity and ensure ongoing component availability.

Substiute Parts

MDF7-3S-2.54DSA(55)

Hirose Electric Co LtdIn Stock: 909MDF7-3S-2.54DSA(55) Datasheet

Current PartRFQ

MDF7-3S-2.54DSA(95)

Hirose Electric Co LtdIn Stock: 1178MDF7-3S-2.54DSA(95) Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The MDF7-3S-2.54DSA(95) qualifies as a direct substitute based on the following critical parameters:

• Identical connector type (Receptacle, Bottom Entry)
• Matching position count (3 positions)
• Identical pitch specification (0.100" / 2.54mm)
• Identical mounting method (Through Hole)
• Identical termination type (Solder)
• Matching electrical ratings (3A current, 250VAC voltage)
• Identical operating temperature range (-35°C ~ 85°C)
• Identical material flammability rating (UL94 V-0)
• Identical contact and insulation materials (Phosphor Bronze, Polyamide/Nylon)

The primary distinction is product status: MDF7-3S-2.54DSA(55) is obsolete, while MDF7-3S-2.54DSA(95) maintains active status with current manufacturing availability.

Parameter Comparison

Engineering Selection Recommendations

The MDF7-3S-2.54DSA(95) is the direct functional equivalent for applications currently specified with MDF7-3S-2.54DSA(55). Selection of the active part number is justified by:

• Identical electrical and mechanical specifications across all critical parameters
• Active product status ensuring ongoing manufacturing and supply chain availability
• ROHS3 compliance and REACH unaffected status, meeting current regulatory requirements
• Equivalent UL94 V-0 flammability rating maintaining safety certifications
• Bulk packaging option supporting production requirements

No design modifications are required for substitution. PCB layouts, mating connector specifications, and electrical circuit parameters remain unchanged.

Frequently Asked Questions (FAQ)

Q: Are MDF7-3S-2.54DSA(55) and MDF7-3S-2.54DSA(95) mechanically interchangeable?

A: Yes. Both connectors share identical pitch (0.100" / 2.54mm), position count (3), mounting type (through hole), and physical dimensions including insulation height (0.197" / 5.00mm) and contact length (0.118" / 3.00mm).

Q: What is the difference between these two part numbers?

A: The primary difference is product status. MDF7-3S-2.54DSA(55) is obsolete, while MDF7-3S-2.54DSA(95) is active. The substitute part includes ROHS3 compliance and REACH unaffected status. Contact finish thickness on mating surfaces differs slightly (78.7µin vs 39.4µin), though both maintain tin plating.

Q: Can I use MDF7-3S-2.54DSA(95) in existing designs specified for MDF7-3S-2.54DSA(55)?

A: Yes. Electrical ratings (3A, 250VAC), operating temperature range (-35°C ~ 85°C), and mechanical specifications are identical. No circuit or layout modifications are necessary.

Q: What certifications apply to the substitute part?

A: MDF7-3S-2.54DSA(95) maintains UL94 V-0 flammability rating, is ROHS3 compliant, and REACH unaffected. These certifications align with current regulatory requirements.

Q: Does packaging differ between these parts?

A: Yes. MDF7-3S-2.54DSA(95) is supplied in bulk packaging, whereas packaging information for MDF7-3S-2.54DSA(55) is not specified. Confirm packaging requirements with procurement for production planning.