QFS-078-04.25-L-D-A-TR Equivalent & Substitute Parts

Part Overview

The QFS-078-04.25-L-D-A-TR is a 156-position rectangular connector receptacle from Samtec Inc.'s Power Q2™ QFS series. This surface mount component features center strip contacts with gold plating and is designed for high-density interconnect applications. The part is currently active in production status with full RoHS3 compliance and unlimited moisture sensitivity rating. Substitute parts are identified when packaging configuration differs while maintaining identical electrical and mechanical specifications, allowing for flexible procurement and inventory management across equivalent packaging formats.

Substiute Parts

QFS-078-04.25-L-D-A-TR

Samtec Inc.In Stock: 1142QFS-078-04.25-L-D-A-TR Datasheet

Current PartRFQ

QFS-078-04.25-L-D-A

Samtec Inc.In Stock: 1242QFS-078-04.25-L-D-A Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the QFS-078-04.25-L-D-A-TR is determined by strict equivalence across the following critical parameters:

• Number of positions: 156
• Pitch: 0.025" (0.64mm)
• Number of rows: 2
• Connector type: Receptacle, Center Strip Contacts
• Mounting type: Surface Mount
• Contact finish: Gold with 10.0µin thickness
• Height above board: 0.278" (7.06mm)
• Mated stacking heights: 10mm, 11mm, 14mm
• Features: Board Guide, Ground Bus (Plane)
• Series: Power Q2™ QFS
• RoHS and MSL compliance levels

The identified substitute part differs only in packaging format (Tray versus Tape & Reel), which does not affect electrical or mechanical performance. All other specifications remain identical.

Parameter Comparison

Engineering Selection Recommendations

Both the QFS-078-04.25-L-D-A-TR and QFS-078-04.25-L-D-A are active production parts with identical electrical and mechanical specifications. Selection between these parts should be based on packaging requirements and procurement workflow:

The QFS-078-04.25-L-D-A-TR in Tape & Reel packaging is optimized for automated assembly processes with high-volume production runs. The QFS-078-04.25-L-D-A in Tray packaging provides flexibility for manual assembly, lower-volume applications, or inventory management scenarios where reel-based packaging is not required.

Both parts maintain full ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1), ensuring compatibility with standard manufacturing and storage conditions. The identical contact finish specifications, mated stacking heights, and board-level features guarantee functional interchangeability in circuit designs.

Frequently Asked Questions (FAQ)

Q: Can QFS-078-04.25-L-D-A (Tray) be used as a direct replacement for QFS-078-04.25-L-D-A-TR (Tape & Reel)?

A: Yes. Both parts are electrically and mechanically identical. The difference is packaging format only. Tray packaging is suitable for manual assembly or lower-volume applications, while Tape & Reel is designed for automated pick-and-place equipment.

Q: Are there any differences in contact performance between these two part numbers?

A: No. Both parts feature identical gold contact finish at 10.0µin thickness, the same 156-position configuration, 0.025" pitch, and center strip contact design. Electrical performance is equivalent.

Q: What is the significance of the "-TR" suffix in QFS-078-04.25-L-D-A-TR?

A: The "-TR" suffix designates Tape & Reel packaging format. Removal of this suffix indicates Tray packaging. All other specifications remain unchanged.

Q: Do both parts meet the same compliance standards?

A: Yes. Both QFS-078-04.25-L-D-A-TR and QFS-078-04.25-L-D-A are ROHS3 compliant with MSL 1 (unlimited moisture sensitivity), ECCN EAR99 classification, and identical HTSUS codes.

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

A: The QFS-078-04.25-L-D-A-TR (Tape & Reel) is the standard choice for automated assembly lines using pick-and-place equipment. Tray packaging is typically reserved for manual assembly or special handling requirements.