QMSS-052-06.75-L-D-A-TR Equivalent & Substitute Parts

Part Overview

The QMSS-052-06.75-L-D-A-TR is a 104-position rectangular connector header manufactured by Samtec Inc. as part of the Q2™ QMSS series. This surface mount connector features outer shroud contacts with gold plating and is designed for high-density interconnect applications requiring board-level connectivity. The part is currently in active production status with 1090 units available in tape and reel packaging. Substitute parts may be required due to packaging availability, lead time constraints, or inventory allocation across different distribution channels.

Substiute Parts

QMSS-052-06.75-L-D-A-TR

Samtec Inc.In Stock: 1160QMSS-052-06.75-L-D-A-TR Datasheet

Current PartRFQ

QMSS-052-06.75-L-D-A

Samtec Inc.In Stock: 2239QMSS-052-06.75-L-D-A Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the QMSS-052-06.75-L-D-A-TR is determined by strict equivalence across the following critical parameters:

• Number of positions: 104
• Pitch: 0.025" (0.64mm)
• Number of rows: 2
• Mounting type: Surface Mount
• Connector type: Header, Outer Shroud Contacts
• Contact finish: Gold
• Contact finish thickness: 10.0µin (0.25µm)
• Mated stacking height: 11mm
• Series: Q2™ QMSS
• RoHS compliance: ROHS3 Compliant
• Moisture sensitivity level: 1 (Unlimited)

Packaging format (tape and reel versus tray) does not affect electrical or mechanical compatibility and therefore does not preclude substitution. Height above board may vary within acceptable tolerances for board-level integration.

Parameter Comparison

Engineering Selection Recommendations

Both the QMSS-052-06.75-L-D-A-TR and QMSS-052-06.75-L-D-A maintain active product status with full ROHS3 compliance and unlimited moisture sensitivity classification. The primary distinction between these parts is packaging format and height above board specification. The substitute part QMSS-052-06.75-L-D-A offers higher inventory availability (2210 units versus 1090 units) and is supplied in tray packaging rather than tape and reel format. The height above board difference of 0.015" (0.38mm) falls within standard PCB assembly tolerances for surface mount applications. Selection between these parts should be based on packaging requirements for your assembly process and inventory availability needs.

Frequently Asked Questions (FAQ)

Q: Can QMSS-052-06.75-L-D-A be used as a direct replacement for QMSS-052-06.75-L-D-A-TR?

A: Yes. Both parts are electrically and mechanically equivalent across all critical parameters including position count, pitch, contact finish, and stacking height. The difference in packaging format (tray versus tape and reel) does not affect connector performance or compatibility with mating components.

Q: What is the significance of the height above board difference between these parts?

A: The height above board specification differs by 0.015" (0.38mm), with the main part at 0.265" and the substitute at 0.250". This variation is within standard PCB assembly tolerances and does not affect electrical performance or mechanical fit with standard connector receptacles.

Q: Are there any compliance or certification differences between these parts?

A: No. Both parts carry identical RoHS3 compliance status and moisture sensitivity level classification (MSL 1, Unlimited). Both are manufactured by Samtec Inc. and belong to the same Q2™ QMSS series.

Q: Which packaging format should I select?

A: Tape and reel (TR) packaging is optimized for automated pick-and-place assembly processes. Tray packaging is suitable for manual assembly or lower-volume production runs. Selection depends on your manufacturing process requirements and assembly equipment capabilities.

Q: Is the substitute part available in higher quantities?

A: Yes. The QMSS-052-06.75-L-D-A in tray packaging currently has 2210 units in stock compared to 1090 units for the tape and reel variant, providing greater availability for high-volume production requirements.