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MDF7-18P-2.54DSA(55) Equivalent & Substitute Parts
Part Overview
The MDF7-18P-2.54DSA(55) is a rectangular connector header manufactured by Hirose Electric Co Ltd, designed for through-hole mounting applications. This connector features 18 vertical positions with 0.100" (2.54mm) pitch spacing and male pin contacts. The part is classified as obsolete, making identification of suitable substitute components essential for ongoing design support and procurement planning.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer Part Number | MDF7-18P-2.54DSA(55) |
| Manufacturer | Hirose Electric Co Ltd |
| Series | MDF7 |
| Connector Type | Header |
| Contact Type | Male Pin |
| Number of Positions | 18 |
| Pitch - Mating | 0.100" (2.54mm) |
| Mounting Type | Through Hole |
| Current Rating | 3A |
| Voltage Rating | 250V |
| Operating Temperature | -35°C ~ 85°C |
| Product Status | Obsolete |
Substitute Part Grouping Explanation
Substitution for the MDF7-18P-2.54DSA(55) is determined by the following critical parameters:
- Connector Series & Pitch: MDF7 series with 0.100" (2.54mm) mating pitch
- Position Count: 18 positions
- Contact Configuration: Male pin, square contact shape
- Mounting Method: Through hole, solder termination
- Electrical Ratings: 3A current, 250V voltage minimum
- Material Specifications: Brass contacts with tin finish, PBT insulation (UL94 V-0)
- Environmental Compliance: RoHS compliant, MSL 1
The substitute part MDF7-18P-2.54DSA(95) maintains identical electrical and mechanical specifications across all critical parameters, with the primary distinction being product status (Active vs. Obsolete) and packaging format.
Parameter Comparison
| Parameter | MDF7-18P-2.54DSA(55) | MDF7-18P-2.54DSA(95) |
|---|---|---|
| Manufacturer | Hirose Electric Co Ltd | Hirose Electric Co Ltd |
| Series | MDF7 | MDF7 |
| Connector Type | Header | Header |
| Contact Type | Male Pin | Male Pin |
| Number of Positions | 18 | 18 |
| Pitch - Mating | 0.100" (2.54mm) | 0.100" (2.54mm) |
| Number of Rows | 1 | 1 |
| 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 MDF7-18P-2.54DSA(95) is the direct substitute for the obsolete MDF7-18P-2.54DSA(55). Both components are manufactured by Hirose Electric Co Ltd and share identical electrical and mechanical specifications. The substitute part maintains full compatibility across all critical parameters: 18-position configuration, 0.100" (2.54mm) pitch, 3A current rating, 250V voltage rating, and through-hole solder termination.
The primary distinction is product status: MDF7-18P-2.54DSA(95) is currently active in production, whereas MDF7-18P-2.54DSA(55) is obsolete. Both parts carry RoHS compliance certification and UL94 V-0 flammability rating, meeting equivalent environmental and safety standards. The substitute part is available in bag packaging format.
Frequently Asked Questions (FAQ)
Q: Are MDF7-18P-2.54DSA(55) and MDF7-18P-2.54DSA(95) mechanically interchangeable?
A: Yes. Both connectors feature identical physical dimensions, contact configurations, and mounting specifications. The 18-position header with 0.100" (2.54mm) pitch, through-hole solder termination, and overall contact length of 0.612" (15.54mm) are identical across both part numbers.
Q: Do these connectors have the same electrical ratings?
A: Yes. Both parts are rated for 3A current and 250V voltage operation. Operating temperature range is -35°C to 85°C for both components.
Q: What is the difference between these two part numbers?
A: The primary difference is product status. MDF7-18P-2.54DSA(55) is obsolete, while MDF7-18P-2.54DSA(95) is active in production. The substitute part is supplied in bag packaging. All electrical, mechanical, and material specifications remain identical.
Q: Are both parts RoHS compliant?
A: Yes. Both MDF7-18P-2.54DSA(55) and MDF7-18P-2.54DSA(95) are RoHS compliant with UL94 V-0 flammability rating and MSL 1 moisture sensitivity level.
Q: Can I use MDF7-18P-2.54DSA(95) as a direct replacement in existing designs?
A: Yes. The substitute part maintains full compatibility with applications designed for MDF7-18P-2.54DSA(55). No design modifications are required.
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