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MDF7-3S-2.54DSA(74) Equivalent & Substitute Parts
Part Overview
The MDF7-3S-2.54DSA(74) is a 3-position rectangular connector manufactured by Hirose Electric Co Ltd, classified as a position connector within the rectangular connectors category. This part is currently listed as obsolete, which necessitates identification of functionally equivalent alternatives for ongoing design and procurement requirements. The substitute part maintains the same electrical and mechanical interface specifications while offering active product status and improved availability.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer | Hirose Electric Co Ltd |
| Category | Rectangular Connectors |
| Series | MDF7 |
| Number of Positions | 3 |
| Pitch - Mating | 0.100" (2.54mm) |
| Connector Type | Receptacle, Bottom Entry |
| Contact Type | Female Socket |
| Mounting Type | Through Hole |
| Termination | Solder |
| Current Rating | 3A |
| Voltage Rating | 250VAC |
| Operating Temperature | -35°C ~ 85°C |
| Moisture Sensitivity Level | 1 (Unlimited) |
| Product Status | Obsolete |
Substitute Part Grouping Explanation
The MDF7-3S-2.54DSA(95) qualifies as a direct substitute for the MDF7-3S-2.54DSA(74) based on the following critical parameters:
Electrical Compatibility:
- Identical number of positions (3)
- Identical pitch specification (0.100" / 2.54mm)
- Identical current rating (3A)
- Identical voltage rating (250VAC)
- Identical operating temperature range (-35°C ~ 85°C)
Mechanical Compatibility:
- Same connector type (Receptacle, Bottom Entry)
- Same contact type (Female Socket)
- Same mounting type (Through Hole)
- Same termination method (Solder)
- Same series designation (MDF7)
Environmental & Compliance:
- Identical Moisture Sensitivity Level (MSL 1 - Unlimited)
- Both manufactured by Hirose Electric Co Ltd
The substitute part maintains full functional equivalence while transitioning from obsolete to active product status.
Parameter Comparison
| Parameter | MDF7-3S-2.54DSA(74) | MDF7-3S-2.54DSA(95) |
|---|---|---|
| Manufacturer | Hirose Electric Co Ltd | Hirose Electric Co Ltd |
| Category | Rectangular Connectors | Rectangular Connectors |
| Series | MDF7 | MDF7 |
| Number of Positions | 3 | 3 |
| Pitch - Mating | 0.100" (2.54mm) | 0.100" (2.54mm) |
| Connector Type | Receptacle, Bottom Entry | Receptacle, Bottom Entry |
| Contact Type | Female Socket | Female Socket |
| Mounting Type | Through Hole | Through Hole |
| Termination | Solder | Solder |
| Current Rating | 3A | 3A |
| Voltage Rating | 250VAC | 250VAC |
| Operating Temperature | -35°C ~ 85°C | -35°C ~ 85°C |
| Moisture Sensitivity Level | 1 (Unlimited) | 1 (Unlimited) |
| Product Status | Obsolete | Active |
| RoHS Status | Not specified | ROHS3 Compliant |
| REACH Status | Not specified | REACH Unaffected |
Engineering Selection Recommendations
The MDF7-3S-2.54DSA(95) is the appropriate selection for applications currently specified with MDF7-3S-2.54DSA(74). The substitute part provides:
Product Lifecycle Advantage: The transition from obsolete to active product status ensures long-term availability and supply chain continuity for new designs and production runs.
Regulatory Compliance: The MDF7-3S-2.54DSA(95) carries ROHS3 compliance and REACH unaffected status, meeting current environmental and regulatory requirements. These certifications are not specified for the obsolete variant.
Electrical & Mechanical Equivalence: All critical electrical parameters (current, voltage, temperature range) and mechanical specifications (pitch, connector type, mounting method) are identical, ensuring direct functional replacement without circuit or PCB layout modifications.
Inventory & Availability: The substitute part maintains higher inventory levels (1115 pcs vs 988 pcs), supporting procurement reliability and lead time reduction.
Frequently Asked Questions (FAQ)
Q: Can MDF7-3S-2.54DSA(95) be used as a direct replacement for MDF7-3S-2.54DSA(74) without PCB modifications?
A: Yes. Both parts share identical pitch (0.100" / 2.54mm), mounting type (Through Hole), connector type (Receptacle, Bottom Entry), and electrical ratings. No PCB layout changes are required.
Q: What is the primary reason for substitution?
A: The MDF7-3S-2.54DSA(74) is classified as obsolete. The MDF7-3S-2.54DSA(95) provides equivalent functionality with active product status and improved supply availability.
Q: Are there differences in contact specifications between these parts?
A: Both parts utilize female socket contacts with tin finish. The substitute part specifies contact finish thickness (39.4µin / 1.00µm mating, tin post finish), providing documented contact specifications.
Q: Does the substitute part meet current environmental standards?
A: Yes. The MDF7-3S-2.54DSA(95) is ROHS3 compliant and REACH unaffected, meeting current regulatory requirements. The obsolete variant does not specify these certifications.
Q: What is the packaging difference?
A: The substitute part is supplied in bulk packaging, compared to unspecified packaging for the obsolete variant. This does not affect component functionality or performance.
Q: Are the electrical ratings identical?
A: Yes. Both parts are rated for 3A current and 250VAC voltage, with identical operating temperature range (-35°C ~ 85°C) and moisture sensitivity level (MSL 1 - Unlimited).
Q: Is the MDF7 series designation maintained?
A: Yes. Both parts belong to the MDF7 series, confirming design family continuity and interface compatibility.
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