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

Part Overview

The QFSS-026-04.25-L-D-TR 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 shielding and gold plating, designed for applications requiring high-density interconnection in a 0.025" pitch configuration. The part maintains Active product status and is ROHS3 compliant. Equivalent and substitute parts are identified when identical electrical and mechanical parameters are maintained across the connector family, ensuring direct interchangeability in circuit designs.

Substiute Parts

QFSS-026-04.25-L-D-TR

Samtec Inc.In Stock: 727QFSS-026-04.25-L-D-TR 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

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

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

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

Substitutes maintain identical electrical and mechanical specifications, ensuring direct replacement capability without design modification.

Parameter Comparison

Engineering Selection Recommendations

Both the QFSS-026-04.25-L-D-TR and QFSS-026-04.25-L-D-A-P-TR maintain Active product status within the Q2™ QFSS series. Both parts are ROHS3 compliant and carry identical ECCN and HTSUS classifications. The parts are electrically and mechanically equivalent, with all critical parameters matching across connector position count, pitch, row configuration, mounting method, shielding architecture, contact metallurgy, and dimensional specifications. Selection between these parts may be based on inventory availability or supply chain considerations, as both satisfy identical design requirements.

Frequently Asked Questions (FAQ)

Q: Can QFSS-026-04.25-L-D-A-P-TR be used as a direct replacement for QFSS-026-04.25-L-D-TR?

A: Yes. Both parts are electrically and mechanically equivalent. All critical parameters including position count, pitch, row configuration, mounting type, shielding, contact finish, and dimensional specifications are identical. Direct substitution is possible without design modification.

Q: Are there differences in the part numbers that affect compatibility?

A: The part numbers differ in their suffix designations (D-TR versus D-A-P-TR), but these variations do not affect the electrical or mechanical characteristics that determine connector interchangeability. Both parts maintain the same base product number (QFSS-026) and identical functional specifications.

Q: What are the key parameters that determine substitutability for this connector?

A: Substitutability is determined by equivalence in: number of positions (52), pitch (0.025"), row count (2), connector type (receptacle with center strip contacts), mounting method (surface mount), shielding configuration, contact finish (gold at 10.0µin thickness), mated stacking height (11mm), and height above board (0.278"). All substitute parts must match these parameters exactly.

Q: Are both parts suitable for high-density interconnection applications?

A: Yes. Both the QFSS-026-04.25-L-D-TR and QFSS-026-04.25-L-D-A-P-TR are designed for high-density applications, featuring 52 positions in a 0.025" pitch configuration with shielding and ground bus architecture.

Q: What is the significance of the Tape & Reel (TR) packaging?

A: Tape & Reel packaging indicates the parts are supplied in continuous tape format suitable for automated assembly processes. Both substitute parts share this packaging specification, ensuring compatibility with standard pick-and-place equipment.

Q: Do both parts meet the same compliance standards?

A: Yes. Both parts are ROHS3 compliant with MSL rating of 1 (Unlimited), indicating no moisture sensitivity restrictions. Both carry identical ECCN (EAR99) and HTSUS (8536.69.4040) classifications.