QMS-026-05.75-L-D-PC4-TR Equivalent & Substitute Parts

Part Overview

The QMS-026-05.75-L-D-PC4-TR is a 60-position connector header from Samtec Inc.'s Power Q2™ QMS series, featuring outer shroud contacts with surface mount and through-hole gold plating. This rectangular connector combines 52 signal positions with 8 dedicated power pins, designed for high-density interconnect applications. The part maintains Active product status with full RoHS3 compliance and unlimited moisture sensitivity rating (MSL 1). Substitute parts are identified when equivalent electrical and mechanical parameters align with application requirements, enabling component sourcing flexibility while maintaining design integrity.

Substiute Parts

QMS-026-05.75-L-D-PC4-TR

Samtec Inc.In Stock: 824QMS-026-05.75-L-D-PC4-TR Datasheet

Current PartRFQ

QMS-026-05.75-L-D-PC4

Samtec Inc.In Stock: 1201QMS-026-05.75-L-D-PC4 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the QMS-026-05.75-L-D-PC4-TR is determined by strict alignment of the following parameters:

• Manufacturer & Series: Samtec Inc. Power Q2™ QMS series only
• Connector Type: Header with outer shroud contacts
• Pitch: 0.025" (0.64mm) fixed requirement
• Number of Rows: 2-row configuration
• Mounting Type: Surface mount and through-hole capability
• Contact Finish: Gold plating at 10.0µin (0.25µm) thickness
• Compliance: RoHS3 and MSL 1 rating maintained

The substitute part QMS-026-05.75-L-D-PC4 differs in position count (52 vs. 60) and packaging format (Tray vs. Tape & Reel), representing a reduced-position variant within the same connector family. This substitution applies only when the application requires 52 signal positions without the additional 8 power pins, or when packaging requirements permit Tray format instead of Tape & Reel.

Parameter Comparison

Engineering Selection Recommendations

Both the QMS-026-05.75-L-D-PC4-TR and QMS-026-05.75-L-D-PC4 maintain Active product status with identical RoHS3 compliance and MSL 1 ratings, ensuring long-term availability and regulatory alignment. Selection between these parts depends on application-specific requirements:

The main part QMS-026-05.75-L-D-PC4-TR provides 60 total positions (52 signal + 8 power) in Tape & Reel packaging, suitable for high-volume automated assembly processes. The substitute QMS-026-05.75-L-D-PC4 offers 52 positions in Tray packaging, appropriate for applications requiring reduced position count or manual assembly workflows. Both parts share identical electrical characteristics, pitch, mounting capability, and contact specifications, differing only in position configuration and packaging format. Height above board varies by 0.015" (0.38mm) between variants due to position count differences.

Frequently Asked Questions (FAQ)

Q: Can QMS-026-05.75-L-D-PC4 replace QMS-026-05.75-L-D-PC4-TR in all applications?

A: Substitution is valid only when the application requires 52 signal positions without the 8 dedicated power pins. The reduced position count and different packaging format (Tray vs. Tape & Reel) must align with design and assembly requirements.

Q: What is the significance of the position count difference (60 vs. 52)?

A: The main part includes 8 dedicated power pins within its 60-position configuration, while the substitute provides 52 positions total. Applications requiring separate power distribution through dedicated pins must use the 60-position variant.

Q: Are the mated stacking heights identical between these parts?

A: Yes, both parts support 10mm and 12mm mated stacking heights. However, the height above board differs by 0.015" (5.38mm vs. 5.76mm) due to the position count variation.

Q: Does packaging format affect electrical performance?

A: No. Tape & Reel (TR) and Tray packaging formats do not alter electrical characteristics, contact finish, or mechanical specifications. Packaging selection depends on assembly process requirements and volume considerations.

Q: Are both parts suitable for high-reliability applications?

A: Both parts maintain RoHS3 compliance, MSL 1 (unlimited) rating, and Active product status, supporting equivalent reliability standards. Compliance certifications are identical across both variants.