MDF7-18S-2.54DSA(56) Equivalent & Substitute Parts

Part Overview

The MDF7-18S-2.54DSA(56) is an 18-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, gold-plated mating contacts, and push-pull fastening. The part is currently listed as obsolete, making identification of active equivalent parts essential for ongoing production and maintenance applications.

Substiute Parts

MDF7-18S-2.54DSA(56)

Hirose Electric Co LtdIn Stock: 1074MDF7-18S-2.54DSA(56) Datasheet

Current PartRFQ

MDF7-18S-2.54DSA(96)

Hirose Electric Co LtdIn Stock: 823MDF7-18S-2.54DSA(96) Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The MDF7-18S-2.54DSA(96) qualifies as a direct substitute based on the following critical parameters that determine functional compatibility:

• Connector Type & Configuration: Both are receptacle, bottom entry connectors in the MDF7 series
• Position Count & Pitch: Both feature 18 positions with 0.100" (2.54mm) mating pitch
• Electrical Ratings: Both support 3A current and 250VAC voltage
• Mechanical Interface: Both use through-hole solder termination with push-pull fastening
• Contact Specifications: Both employ gold-plated mating contacts with tin-plated posts
• Operating Range: Both operate across -35°C to 85°C temperature range
• Material & Compliance: Both use polyamide insulation with UL94 V-0 flammability rating

The primary distinction is product status: MDF7-18S-2.54DSA(56) is obsolete, while MDF7-18S-2.54DSA(96) is active and RoHS compliant.

Parameter Comparison

Engineering Selection Recommendations

The MDF7-18S-2.54DSA(96) is the direct active equivalent for the obsolete MDF7-18S-2.54DSA(56). All electrical, mechanical, and dimensional parameters are identical. The substitute part carries active product status and RoHS compliance certification, making it suitable for new designs and production continuity. The packaging difference (bulk for the substitute versus unspecified for the original) does not affect functional compatibility or performance characteristics.

Frequently Asked Questions (FAQ)

Q: Are these connectors mechanically interchangeable? A: Yes. Both connectors share identical mounting type (through-hole), pitch (0.100"), position count (18), and fastening mechanism (push-pull). They are direct mechanical equivalents.

Q: Can the MDF7-18S-2.54DSA(96) replace the MDF7-18S-2.54DSA(56) in existing designs? A: Yes. All electrical ratings (3A, 250VAC), operating temperature range (-35°C to 85°C), and contact specifications are identical. The substitute is a direct functional replacement.

Q: What is the significance of the different part number suffix? A: The suffix difference reflects packaging and product status changes. The (96) variant is the current active production version with RoHS compliance, while the (56) variant is obsolete.

Q: Are there any compliance differences between these parts? A: The MDF7-18S-2.54DSA(96) is RoHS compliant. Both parts meet UL94 V-0 flammability requirements and share identical electrical certifications (ECCN: EAR99, HTSUS: 8536.69.4040).

Q: What is the contact finish specification for mating surfaces? A: Both connectors feature gold-plated mating contacts with 8.00µin (0.203µm) thickness, ensuring reliable electrical connection and corrosion resistance.