QMSS-026-06.75-L-D-A-TR Equivalent & Substitute Parts

Part Overview

The QMSS-026-06.75-L-D-A-TR is a 52-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 Active in product status with full RoHS3 compliance and unlimited moisture sensitivity rating (MSL 1). Substitute parts are identified when packaging or minor dimensional specifications differ while maintaining identical electrical and mechanical core functionality.

Substiute Parts

QMSS-026-06.75-L-D-A-TR

Samtec Inc.In Stock: 1124QMSS-026-06.75-L-D-A-TR Datasheet

Current PartRFQ

QMSS-026-06.75-L-D-A

Samtec Inc.In Stock: 1225QMSS-026-06.75-L-D-A Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the QMSS-026-06.75-L-D-A-TR is determined by strict equivalence in the following core parameters:

• Number of positions: 52
• Pitch: 0.025" (0.64mm)
• Number of rows: 2
• Connector type: Header, Outer Shroud Contacts
• Mounting type: Surface Mount
• Contact finish: Gold
• Contact finish thickness: 10.0µin (0.25µm)
• Features: Board Guide, Ground Bus (Plane), Shielded
• Series: Q2™ QMSS
• RoHS compliance: ROHS3 Compliant
• MSL rating: 1 (Unlimited)

Variations in packaging format (Tape & Reel versus Tray) and minor height above board specifications do not affect electrical or mechanical compatibility. The substitute part QMSS-026-06.75-L-D-A differs only in packaging configuration and height above board dimension, maintaining full functional equivalence.

Parameter Comparison

Engineering Selection Recommendations

Both the QMSS-026-06.75-L-D-A-TR and QMSS-026-06.75-L-D-A are Active products with identical RoHS3 compliance and MSL 1 ratings. Selection between these parts should be based on packaging requirements and PCB assembly workflow:

• QMSS-026-06.75-L-D-A-TR (Tape & Reel): Suitable for high-volume automated pick-and-place assembly operations.
• QMSS-026-06.75-L-D-A (Tray): Suitable for manual assembly, lower-volume production, or applications where tape packaging is not required.

The height above board difference of 0.015" (0.38mm) is negligible for most applications and does not affect mated stacking height or electrical performance. Both parts maintain identical electrical characteristics, contact geometry, and shielding properties.

Frequently Asked Questions (FAQ)

Q: Can QMSS-026-06.75-L-D-A be used as a direct replacement for QMSS-026-06.75-L-D-A-TR?

A: Yes. Both parts are electrically and mechanically equivalent. The only difference is packaging format (Tray versus Tape & Reel). Selection depends on assembly process requirements, not functional compatibility.

Q: Does the height above board difference affect PCB design?

A: The 0.015" (0.38mm) difference in height above board is within typical PCB clearance tolerances and does not affect mated stacking height (both 11mm). PCB designs accommodating either part will function identically.

Q: Are both parts RoHS compliant?

A: Yes. Both QMSS-026-06.75-L-D-A-TR and QMSS-026-06.75-L-D-A are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating.

Q: What is the pitch specification for this connector?

A: Both parts feature 0.025" (0.64mm) pitch with 52 positions arranged in 2 rows, providing high-density interconnect capability.

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

A: No. Both parts share identical RoHS status, ECCN classification (EAR99), and HTSUS codes. Compliance and certification requirements are equivalent.