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QSS-075-01-L-D-A-TR Equivalent & Substitute Parts
Part Overview
The QSS-075-01-L-D-A-TR is a 150-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 high-density interconnect applications. The part is currently in active production status with ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1). Substitute parts are identified based on identical electrical specifications and compatible mechanical parameters, allowing for flexible sourcing while maintaining functional equivalence.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer | Samtec Inc. |
| Series | Q Strip® QSS |
| Number of Positions | 150 |
| Pitch | 0.025" (0.64mm) |
| Number of Rows | 2 |
| Connector Type | Socket, Center Strip Contacts |
| Mounting Type | Surface Mount |
| Contact Finish | Gold |
| Contact Finish Thickness | 10.0µin (0.25µm) |
| Height Above Board | 0.143" (3.63mm) |
| Mated Stacking Height | 5mm |
| Features | Board Guide, Ground Bus (Plane) |
| RoHS Status | ROHS3 Compliant |
| MSL Rating | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitute parts for the QSS-075-01-L-D-A-TR are identified based on strict equivalence across the following critical parameters:
- Connector type and contact configuration (Socket, Center Strip Contacts)
- Electrical specifications (150 positions, 0.025" pitch, 2 rows)
- Contact material and finish (Gold, 10.0µin thickness)
- Mounting technology (Surface Mount)
- Mechanical features (Board Guide, Ground Bus)
- Compliance certifications (ROHS3, MSL 1)
- Height above board (0.143")
The primary difference between the main part and its substitute is the packaging format. The QSS-075-01-L-D-A-TR is supplied in Tape & Reel (TR) format, while the QSS-075-01-L-D-A is supplied in Tray format. Both parts share identical electrical and mechanical specifications, making them functionally interchangeable for circuit design purposes.
Parameter Comparison
| Parameter | QSS-075-01-L-D-A-TR (Main) | QSS-075-01-L-D-A (Substitute) |
|---|---|---|
| Manufacturer | Samtec Inc. | Samtec Inc. |
| Series | Q Strip® QSS | Q Strip® QSS |
| Number of Positions | 150 | 150 |
| Pitch | 0.025" (0.64mm) | 0.025" (0.64mm) |
| Number of Rows | 2 | 2 |
| Connector Type | Socket, Center Strip Contacts | Socket, Center Strip Contacts |
| Mounting Type | Surface Mount | Surface Mount |
| Contact Finish | Gold | Gold |
| Contact Finish Thickness | 10.0µin (0.25µm) | 10.0µin (0.25µm) |
| Height Above Board | 0.143" (3.63mm) | 0.143" (3.63mm) |
| Features | Board Guide, Ground Bus (Plane) | Board Guide, Ground Bus (Plane) |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant |
| MSL Rating | 1 (Unlimited) | 1 (Unlimited) |
| Packaging | Tape & Reel (TR) | Tray |
| Product Status | Active | Active |
Engineering Selection Recommendations
Both the QSS-075-01-L-D-A-TR and QSS-075-01-L-D-A are active production parts with identical electrical and mechanical specifications. Selection between these parts is determined by packaging and supply chain requirements rather than functional performance.
The QSS-075-01-L-D-A-TR in Tape & Reel format is suitable for high-volume automated assembly processes where tape-fed component handling is standard. The QSS-075-01-L-D-A in Tray format accommodates manual assembly workflows or lower-volume production runs.
Both parts maintain ROHS3 compliance and unlimited moisture sensitivity rating, ensuring compatibility with standard PCB assembly processes and storage conditions. No additional qualification or testing is required when substituting between these packaging formats, provided the assembly equipment and processes are compatible with the selected packaging type.
Frequently Asked Questions (FAQ)
Q: Are QSS-075-01-L-D-A-TR and QSS-075-01-L-D-A electrically identical?
A: Yes. Both parts have identical electrical specifications including 150 positions, 0.025" pitch, 2-row configuration, gold contact finish at 10.0µin thickness, and surface mount mounting type. They are functionally equivalent for circuit design purposes.
Q: What is the only difference between these two parts?
A: The packaging format. QSS-075-01-L-D-A-TR is supplied in Tape & Reel (TR) format, while QSS-075-01-L-D-A is supplied in Tray format. The connector itself is identical.
Q: Can I substitute Tray packaging for Tape & Reel in my assembly process?
A: Substitution depends on your assembly equipment and process capabilities. Tape & Reel format requires compatible tape-fed handling equipment, while Tray format is suitable for manual or alternative feeding systems. Verify your assembly line compatibility before substituting.
Q: Do both parts have the same compliance certifications?
A: Yes. Both QSS-075-01-L-D-A-TR and QSS-075-01-L-D-A are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating.
Q: What is the mechanical height specification for these connectors?
A: The height above board is 0.143" (3.63mm), with a mated stacking height of 5mm. Both parts share these identical specifications.
Q: Are there any inventory or lead time considerations between these parts?
A: Inventory levels may vary. QSS-075-01-L-D-A-TR has 962 pieces in stock, while QSS-075-01-L-D-A has 922 pieces in stock. Verify current availability with your supplier for your specific delivery requirements.
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