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MDF7-7P-2.54DSA(55) Equivalent & Substitute Parts
Part Overview
The MDF7-7P-2.54DSA(55) is a rectangular connector header manufactured by Hirose Electric Co Ltd, designed for through-hole mounting applications. This 7-position, single-row connector operates at 3A current rating and 250V voltage rating with a 0.100" (2.54mm) pitch. The part is classified as obsolete, making identification of suitable substitutes necessary for ongoing design support and component procurement.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer Part Number | MDF7-7P-2.54DSA(55) |
| Manufacturer | Hirose Electric Co Ltd |
| Series | MDF7 |
| Number of Positions | 7 |
| Pitch - Mating | 0.100" (2.54mm) |
| Connector Type | Header |
| Contact Type | Male Pin |
| Mounting Type | Through Hole |
| 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-2.54DSA(55) is determined by the following critical parameters:
- Connector Series & Pitch: Both parts must belong to the MDF7 series with 0.100" (2.54mm) pitch to ensure mechanical and electrical compatibility
- Position Count: 7-position configuration must be maintained
- Contact Type & Configuration: Male pin header with single-row layout
- Electrical Ratings: Current rating of 3A and voltage rating of 250V or higher
- Mounting & Termination: Through-hole solder termination required
- Material & Compliance: PBT insulation, brass contacts with tin finish, UL94 V-0 flammability rating, and RoHS compliance
The MDF7-7P-2.54DSA(95) qualifies as a direct substitute based on these parameters. Both parts share identical mechanical dimensions, electrical specifications, and material composition. The primary distinction is product status and packaging configuration.
Parameter Comparison
| Parameter | MDF7-7P-2.54DSA(55) | MDF7-7P-2.54DSA(95) |
|---|---|---|
| Manufacturer | Hirose Electric Co Ltd | Hirose Electric Co Ltd |
| Series | MDF7 | MDF7 |
| Number of Positions | 7 | 7 |
| Pitch - Mating | 0.100" (2.54mm) | 0.100" (2.54mm) |
| Connector Type | Header | Header |
| Contact Type | Male Pin | Male Pin |
| Mounting Type | Through Hole | Through Hole |
| Termination | Solder | Solder |
| Contact Length - Mating | 0.394" (10.00mm) | 0.394" (10.00mm) |
| Contact Length - Post | 0.118" (3.00mm) | 0.118" (3.00mm) |
| Overall Contact Length | 0.612" (15.54mm) | 0.612" (15.54mm) |
| Insulation Height | 0.100" (2.54mm) | 0.100" (2.54mm) |
| Contact Shape | Square | Square |
| Contact Finish - Mating | Tin | Tin |
| Contact Finish - Post | Tin | Tin |
| 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 |
| Packaging | - | Bag |
Engineering Selection Recommendations
The MDF7-7P-2.54DSA(95) is the qualified substitute for the obsolete MDF7-7P-2.54DSA(55). Both parts maintain identical electrical and mechanical specifications, including current rating, voltage rating, contact configuration, and material composition. The substitute part carries active product status from Hirose Electric Co Ltd, ensuring continued availability and manufacturing support. Both parts meet RoHS compliance requirements and UL94 V-0 flammability standards. The MDF7-7P-2.54DSA(95) is supplied in bag packaging and represents the current production equivalent within the MDF7 series.
Frequently Asked Questions (FAQ)
Q: Can MDF7-7P-2.54DSA(95) be used as a direct replacement for MDF7-7P-2.54DSA(55)?
A: Yes. Both parts share identical mechanical dimensions, electrical ratings, contact configuration, and material specifications. The substitute part is the active production equivalent.
Q: What is the difference between these two part numbers?
A: The primary differences are product status and packaging. The MDF7-7P-2.54DSA(55) is obsolete, while the MDF7-7P-2.54DSA(95) is active. The substitute is supplied in bag packaging.
Q: Are the voltage ratings equivalent between these parts?
A: Yes. The MDF7-7P-2.54DSA(55) is rated at 250V, and the MDF7-7P-2.54DSA(95) is rated at 250VAC. Both meet the same voltage specification requirements.
Q: Do both parts have the same contact dimensions?
A: Yes. Contact length for mating is 0.394" (10.00mm), contact length for post is 0.118" (3.00mm), and overall contact length is 0.612" (15.54mm) on both parts.
Q: Are there any compliance or certification differences?
A: No. Both parts are RoHS compliant, carry UL94 V-0 flammability rating, and have MSL 1 (Unlimited) moisture sensitivity level.
Q: What is the current rating for these connectors?
A: Both parts are rated for 3A continuous current.
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