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

Part Overview

The QFSS-026-04.25-L-D-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, board guide, ground bus plane, and shielding. The part is Active status and ROHS3 compliant. Equivalent parts are identified when component availability is limited, supply chain disruptions occur, or inventory requirements necessitate alternative sourcing from the same manufacturer's product line.

Substiute Parts

QFSS-026-04.25-L-D-P

Samtec Inc.In Stock: 767QFSS-026-04.25-L-D-P Datasheet

Current PartRFQ

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

Substitution eligibility for the QFSS-026-04.25-L-D-P is determined by strict equivalence across the following critical parameters:

• Manufacturer: Samtec Inc.
• Series: Q2™ QFSS
• Number of Positions: 52
• Pitch: 0.025" (0.64mm)
• Number of Rows: 2
• Connector Type: Receptacle, Center Strip Contacts
• Mounting Type: Surface Mount
• Contact Finish: Gold
• Contact Finish Thickness: 10.0µin (0.25µm)
• Features: Board Guide, Ground Bus (Plane), Shielded
• Mated Stacking Height: 11mm
• Height Above Board: 0.278" (7.06mm)
• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level: 1 (Unlimited)

Parts meeting all these parameters are classified as parametric equivalents and direct substitutes. Variations in packaging format (Tray) do not affect functional or electrical compatibility.

Parameter Comparison

Engineering Selection Recommendations

Both QFSS-026-04.25-L-D-P and QFSS-026-04.25-L-D-A are Active status products from Samtec Inc. with identical electrical and mechanical specifications. Both parts are ROHS3 compliant and carry the same export classification (EAR99) and tariff code (8536.69.4040). Selection between these parts may be based on inventory availability, lead time, or packaging preferences, as they are functionally and electrically interchangeable. The QFSS-026-04.25-L-D-A currently maintains higher inventory levels (910 Pcs) compared to QFSS-026-04.25-L-D-P (660 Pcs).

Frequently Asked Questions (FAQ)

Q: Are QFSS-026-04.25-L-D-P and QFSS-026-04.25-L-D-A electrically identical?

A: Yes. Both parts share identical electrical specifications including 52 positions, 0.025" pitch, gold contact finish at 10.0µin thickness, and shielded configuration with ground bus plane.

Q: Can these parts be used interchangeably on the same PCB?

A: Yes. Both parts have identical mounting type (Surface Mount), mated stacking height (11mm), and height above board (0.278"), making them mechanically and functionally interchangeable.

Q: What is the difference between these two part numbers?

A: The part numbers differ only in their suffix designation. All critical parameters—connector type, position count, pitch, row configuration, contact finish, features, and compliance certifications—are identical.

Q: Are both parts RoHS compliant?

A: Yes. Both QFSS-026-04.25-L-D-P and QFSS-026-04.25-L-D-A are ROHS3 compliant.

Q: What is the moisture sensitivity level for these connectors?

A: Both parts have Moisture Sensitivity Level 1 (Unlimited), indicating no moisture sensitivity restrictions during storage or handling.

Q: Can I substitute one part for the other in production?

A: Yes. These parts are parametric equivalents with identical electrical, mechanical, and compliance characteristics, making them suitable for direct substitution in production environments.