QFSS-026-04.25-L-D-A-P Equivalent & Substitute Parts

Part Overview

The QFSS-026-04.25-L-D-A-P is a 52-position rectangular connector receptacle manufactured by Samtec Inc. as part of the Q2™ QFSS series. This surface mount connector features center strip contacts with gold plating, designed for high-density interconnect applications requiring shielded signal transmission. The part is currently in active production status with ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1). Substitute parts are identified when packaging configurations or minor specification variants are required while maintaining identical electrical and mechanical performance.

Substiute Parts

QFSS-026-04.25-L-D-A-P

Samtec Inc.In Stock: 814QFSS-026-04.25-L-D-A-P Datasheet

Current PartRFQ

QFSS-026-04.25-L-D-A-P-TR

Samtec Inc.In Stock: 1217QFSS-026-04.25-L-D-A-P-TR Datasheet

SimilarRFQ

QFSS-026-04.25-L-D-A

Samtec Inc.In Stock: 976QFSS-026-04.25-L-D-A Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the QFSS-026-04.25-L-D-A-P are identified based on strict equivalence across the following critical parameters:

• Connector type and position count (52-position receptacle)
• Pitch specification (0.025" / 0.64mm)
• Row configuration (2 rows)
• Contact material and finish (gold plating at 10.0µin thickness)
• Mechanical features (board guide, ground bus, shielded design)
• Mounting technology (surface mount)
• Physical dimensions (height above board and mated stacking height)
• Compliance certifications (ROHS3, MSL 1)

Substitution is permitted when packaging format differs (Tray versus Tape & Reel) or when minor suffix variations exist that do not alter electrical or mechanical performance. All identified substitutes maintain identical base product number (QFSS-026) and core specifications.

Parameter Comparison

Engineering Selection Recommendations

All three parts maintain active production status with identical electrical and mechanical specifications. Selection between these parts is determined by packaging and supply chain requirements:

QFSS-026-04.25-L-D-A-P (Tray packaging) and QFSS-026-04.25-L-D-A (Tray packaging) are functionally equivalent and differ only in minor suffix designation. Both are suitable for standard assembly operations requiring manual or semi-automated placement.

QFSS-026-04.25-L-D-A-P-TR (Tape & Reel packaging) is specified for high-volume automated assembly processes utilizing pick-and-place equipment. This packaging format provides the same component performance with optimized handling for production environments.

All parts comply with ROHS3 regulations and carry MSL 1 rating, indicating no moisture sensitivity restrictions during storage or handling. Selection should be based on assembly methodology and inventory management protocols rather than technical performance considerations.

Frequently Asked Questions (FAQ)

Q: Can QFSS-026-04.25-L-D-A-P-TR be used in place of QFSS-026-04.25-L-D-A-P?

A: Yes. Both parts are electrically and mechanically identical. The difference is packaging format: Tape & Reel versus Tray. Component performance, pin configuration, and electrical characteristics are unchanged. Selection depends on assembly equipment capability and supply chain requirements.

Q: What is the difference between QFSS-026-04.25-L-D-A and QFSS-026-04.25-L-D-A-P?

A: These parts share identical electrical and mechanical specifications. The suffix variation does not indicate a functional difference. Both are suitable for the same applications and circuit designs.

Q: Are all three parts ROHS3 compliant?

A: Yes. QFSS-026-04.25-L-D-A-P, QFSS-026-04.25-L-D-A-P-TR, and QFSS-026-04.25-L-D-A all carry ROHS3 compliance certification.

Q: What does MSL 1 mean for this connector?

A: MSL 1 indicates unlimited moisture sensitivity level. This part requires no special moisture control during storage, handling, or assembly. Standard warehouse conditions are acceptable.

Q: Can these connectors be used in high-density interconnect applications?

A: Yes. The 0.025" (0.64mm) pitch and 52-position configuration support high-density signal routing. The shielded design and ground bus feature provide signal integrity for demanding applications.

Q: What is the mated stacking height?

A: The mated stacking height is 11mm, measured when the receptacle is fully engaged with its corresponding plug connector.