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QSS-025-01-F-D-A-TR Equivalent & Substitute Parts
Part Overview
The QSS-025-01-F-D-A-TR is a 50-position rectangular connector socket manufactured by Samtec Inc. as part of the Q Strip® QSS series. This surface mount component features center strip contacts with gold plating and is designed for applications requiring high-density interconnection with board-level guidance and ground plane integration. The part maintains Active product status with full RoHS3 compliance and unlimited moisture sensitivity rating (MSL 1). Substitute parts are identified based on identical electrical and mechanical specifications with variations limited to packaging configuration.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Connector Type | Socket, Center Strip Contacts |
| Number of Positions | 50 |
| Pitch | 0.025" (0.64mm) |
| Number of Rows | 2 |
| Mounting Type | Surface Mount |
| Contact Finish | Gold |
| Contact Finish Thickness | 3.00µin (0.076µm) |
| Height Above Board | 0.143" (3.63mm) |
| Features | Board Guide, Ground Bus (Plane) |
| RoHS Status | ROHS3 Compliant |
| Moisture Sensitivity Level | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitution eligibility for the QSS-025-01-F-D-A-TR is determined by strict equivalence across all electrical and mechanical parameters. The identified substitute part QSS-025-01-F-D-A maintains identical specifications in the following critical areas:
- Connector type and contact configuration (Socket, Center Strip Contacts)
- Electrical capacity (50 positions, 2 rows)
- Contact pitch (0.025" / 0.64mm)
- Surface mount mounting methodology
- Contact material and finish specifications (Gold, 3.00µin thickness)
- Physical envelope (0.143" height above board)
- Functional features (Board Guide, Ground Bus integration)
- Compliance certifications (RoHS3, MSL 1)
The sole distinction between these parts is packaging format: the main part is supplied in Tape & Reel (TR) configuration, while the substitute is supplied in Tray packaging. Both formats contain identical component specifications and are suitable for equivalent circuit board assembly applications.
Parameter Comparison
| Parameter | QSS-025-01-F-D-A-TR (Main) | QSS-025-01-F-D-A (Substitute) |
|---|---|---|
| Manufacturer | Samtec Inc. | Samtec Inc. |
| Series | Q Strip® QSS | Q Strip® QSS |
| Category | Rectangular Connectors | Rectangular Connectors |
| Connector Type | Socket, Center Strip Contacts | Socket, Center Strip Contacts |
| Number of Positions | 50 | 50 |
| Pitch | 0.025" (0.64mm) | 0.025" (0.64mm) |
| Number of Rows | 2 | 2 |
| Mounting Type | Surface Mount | Surface Mount |
| Contact Finish | Gold | Gold |
| Contact Finish Thickness | 3.00µin (0.076µm) | 3.00µin (0.076µm) |
| Height Above Board | 0.143" (3.63mm) | 0.143" (3.63mm) |
| Features | Board Guide, Ground Bus (Plane) | Board Guide, Ground Bus (Plane) |
| Product Status | Active | Active |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant |
| Moisture Sensitivity Level | 1 (Unlimited) | 1 (Unlimited) |
| REACH Status | REACH Unaffected | REACH Unaffected |
| Packaging | Tape & Reel (TR) | Tray |
Engineering Selection Recommendations
Both QSS-025-01-F-D-A-TR and QSS-025-01-F-D-A are Active products with identical electrical and mechanical specifications. Selection between these parts should be based on assembly process requirements and supply chain considerations:
The Tape & Reel (TR) packaged variant (QSS-025-01-F-D-A-TR) is optimized for automated pick-and-place assembly operations and high-volume production environments. The Tray packaged variant (QSS-025-01-F-D-A) is suitable for manual assembly, lower-volume production, or applications where reel-based handling is not required.
Both parts maintain full RoHS3 compliance and REACH unaffected status, ensuring regulatory compatibility across global markets. The unlimited moisture sensitivity rating (MSL 1) eliminates moisture-related handling constraints during storage and assembly.
Frequently Asked Questions (FAQ)
Q: Can QSS-025-01-F-D-A be used as a direct replacement for QSS-025-01-F-D-A-TR?
A: Yes. Both parts are electrically and mechanically identical. The difference is packaging format only. QSS-025-01-F-D-A-TR uses Tape & Reel packaging, while QSS-025-01-F-D-A uses Tray packaging. Component specifications, performance characteristics, and compliance certifications are identical.
Q: What is the primary consideration when choosing between these two packaging formats?
A: Assembly process methodology. Tape & Reel packaging is designed for automated assembly lines with pick-and-place equipment. Tray packaging is suitable for manual assembly or lower-volume production runs where reel-based feeding is not available or cost-effective.
Q: Are there any electrical performance differences between the two parts?
A: No. Both parts have identical electrical specifications: 50 positions, 0.025" pitch, gold-plated contacts with 3.00µin thickness, and equivalent contact configuration.
Q: Do both parts meet the same compliance requirements?
A: Yes. Both QSS-025-01-F-D-A-TR and QSS-025-01-F-D-A are RoHS3 compliant, REACH unaffected, and carry MSL 1 (unlimited) moisture sensitivity rating.
Q: What is the physical footprint difference between these parts?
A: There is no footprint difference. Both parts have identical mounting dimensions and height above board (0.143"). The packaging format does not affect the component's physical envelope on the circuit board.
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