MDF7-20S-2.54DSA Equivalent & Substitute Parts

Part Overview

The MDF7-20S-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 female socket contacts with tin plating, solder termination, and push-pull fastening. The part is currently listed as obsolete, making identification of active equivalent parts essential for ongoing procurement and design continuity.

Substiute Parts

MDF7-20S-2.54DSA

Hirose Electric Co LtdIn Stock: 1204MDF7-20S-2.54DSA Datasheet

Current PartRFQ

MDF7-20S-2.54DSA(55)

Hirose Electric Co LtdIn Stock: 6076MDF7-20S-2.54DSA(55) Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The MDF7-20S-2.54DSA(55) qualifies as a direct substitute based on the following critical parameters:

• Same manufacturer (Hirose Electric Co Ltd) and base series (MDF7)
• Identical connector type, contact configuration, and mating pitch (0.100" / 2.54mm)
• Matching position count (20), contact type (female socket), and mounting method (through-hole solder)
• Equivalent electrical ratings (3A current, 250VAC voltage)
• Identical operating temperature range (-35°C ~ 85°C)
• Same insulation material (Polyamide/Nylon) and flammability rating (UL94 V-0)
• Identical contact material (Phosphor Bronze) and contact geometry (square shape)

The primary difference is product status: MDF7-20S-2.54DSA is obsolete, while MDF7-20S-2.54DSA(55) is active. The substitute also features improved contact finish thickness on mating surfaces (78.7µin vs. 39.4µin) and includes tin plating on the post finish, with ROHS3 compliance versus non-compliance in the original part.

Parameter Comparison

Engineering Selection Recommendations

The MDF7-20S-2.54DSA(55) is the direct active equivalent for the obsolete MDF7-20S-2.54DSA. Selection of the substitute part is based on:

• Identical mechanical and electrical specifications across all critical parameters
• Active product status with established supply chain availability
• ROHS3 compliance, addressing regulatory requirements not met by the original part
• Enhanced contact finish thickness providing improved durability and contact reliability
• Tray packaging suitable for automated assembly processes

For applications requiring the MDF7-20S-2.54DSA, transition to MDF7-20S-2.54DSA(55) is appropriate without design modification.

Frequently Asked Questions (FAQ)

Q: Can MDF7-20S-2.54DSA(55) be used as a direct replacement for MDF7-20S-2.54DSA?

A: Yes. Both parts share identical connector type, position count, pitch, contact configuration, electrical ratings, and operating temperature range. The substitute is the active equivalent of the obsolete original part.

Q: What is the difference between the two parts?

A: The primary differences are product status (obsolete vs. active), RoHS compliance (non-compliant vs. ROHS3 compliant), contact finish thickness (39.4µin vs. 78.7µin on mating surfaces), and post finish specification (unspecified vs. tin-plated). These differences do not affect functional compatibility.

Q: Are there packaging differences?

A: Yes. The original part packaging is not specified, while MDF7-20S-2.54DSA(55) is supplied in tray packaging, which is standard for automated assembly operations.

Q: Does the increased contact finish thickness affect compatibility?

A: No. The increased thickness on MDF7-20S-2.54DSA(55) (78.7µin vs. 39.4µin) provides enhanced durability without affecting mating dimensions or electrical performance.

Q: Is ROHS3 compliance required for my application?

A: ROHS3 compliance is mandatory for products sold in the European Union and many other markets. MDF7-20S-2.54DSA(55) meets this requirement, while the original part does not.

Q: What is the inventory status for each part?

A: MDF7-20S-2.54DSA has 1114 pieces in stock (obsolete status). MDF7-20S-2.54DSA(55) has 5987 pieces in stock (active status), providing greater availability for ongoing procurement.