QMS-026-05.75-H-D-A-K Equivalent & Substitute Parts

Part Overview

The QMS-026-05.75-H-D-A-K is a 52-position connector header manufactured by Samtec Inc. within the Power Q2™ QMS series. This surface mount rectangular connector features outer shroud contacts with gold plating and is designed for high-density interconnect applications requiring board-level connectivity. The part maintains Active product status and is ROHS3 compliant. Identifying equivalent and substitute parts becomes necessary when managing supply chain requirements, accommodating packaging preferences, or addressing inventory constraints while maintaining identical electrical and mechanical performance.

Substiute Parts

QMS-026-05.75-H-D-A-K

Samtec Inc.In Stock: 844QMS-026-05.75-H-D-A-K Datasheet

Current PartRFQ

QMS-026-05.75-H-D-A-K-TR

Samtec Inc.In Stock: 1269QMS-026-05.75-H-D-A-K-TR Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the QMS-026-05.75-H-D-A-K is determined by strict equivalence across the following critical 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: 30.0µin (0.76µm)
• Height above board: 0.212" (5.38mm)
• Mated stacking heights: 10mm, 12mm
• Series: Power Q2™ QMS
• Base product number: QMS-026

The only variable parameter permitting substitution is packaging format. The main part is supplied in Tray packaging, while equivalent parts may be supplied in alternative packaging configurations such as Tape & Reel (TR) without affecting electrical or mechanical performance.

Parameter Comparison

Engineering Selection Recommendations

Both the QMS-026-05.75-H-D-A-K and QMS-026-05.75-H-D-A-K-TR are Active products manufactured by Samtec Inc. and maintain identical ROHS3 compliance and MSL ratings. Selection between these parts should be based on assembly process requirements and supply chain logistics. The Tray packaging format suits manual assembly and lower-volume production environments. The Tape & Reel format accommodates automated pick-and-place assembly processes and high-volume manufacturing operations. Both parts carry the same electrical and mechanical specifications, ensuring direct functional interchangeability within the specified application parameters.

Frequently Asked Questions (FAQ)

Q: Can QMS-026-05.75-H-D-A-K-TR be used as a direct replacement for QMS-026-05.75-H-D-A-K?

A: Yes. Both parts are electrically and mechanically identical. The only difference is packaging format. QMS-026-05.75-H-D-A-K-TR uses Tape & Reel packaging while QMS-026-05.75-H-D-A-K uses Tray packaging. Selection depends on assembly process compatibility and handling requirements.

Q: What determines whether a part can substitute for the QMS-026-05.75-H-D-A-K?

A: Substitute parts must maintain identical specifications across all electrical and mechanical parameters: 52 positions, 0.025" pitch, 2 rows, surface mount configuration, gold contact finish at 30.0µin thickness, 0.212" height above board, and mated stacking heights of 10mm and 12mm. Packaging format is the only variable parameter.

Q: Are there any compliance differences between the Tray and Tape & Reel versions?

A: No. Both versions maintain identical ROHS3 compliance status and MSL rating of 1 (Unlimited). Compliance certifications and environmental ratings are equivalent across packaging formats.

Q: Which packaging format should be selected for automated assembly?

A: The Tape & Reel format (QMS-026-05.75-H-D-A-K-TR) is designed for automated pick-and-place assembly processes. The Tray format (QMS-026-05.75-H-D-A-K) is suitable for manual assembly and lower-volume applications.