QMSS-052-01-L-D-EM2-PC4 Equivalent & Substitute Parts

Part Overview

The QMSS-052-01-L-D-EM2-PC4 is a 104-position connector header manufactured by Samtec Inc. within the Q2™ QMSS series. This surface mount rectangular connector features outer shroud contacts with gold plating and is 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 to provide alternative sourcing options while maintaining electrical and mechanical compatibility within the specified parameter constraints.

Substiute Parts

QMSS-052-01-L-D-EM2-PC4

Samtec Inc.In Stock: 880QMSS-052-01-L-D-EM2-PC4 Datasheet

Current PartRFQ

QMSS-052-06.75-L-D-PC4

Samtec Inc.In Stock: 960QMSS-052-06.75-L-D-PC4 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the QMSS-052-01-L-D-EM2-PC4 is determined by strict equivalence across the following critical parameters:

• Number of Positions: 104
• Pitch: 0.025" (0.64mm)
• Number of Rows: 2
• Mounting Type: Surface Mount
• Contact Finish: Gold
• Contact Finish Thickness: 10.0µin (0.25µm)
• Height Above Board: 0.265" (6.73mm)
• Mated Stacking Heights: 11mm
• Series: Q2™ QMSS
• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level: 1 (Unlimited)

The identified substitute part shares all critical electrical and mechanical parameters with the main part number, differing only in non-functional design variants that do not affect interconnect performance or board integration.

Parameter Comparison

Engineering Selection Recommendations

Both the QMSS-052-01-L-D-EM2-PC4 and QMSS-052-06.75-L-D-PC4 maintain Active product status within the Q2™ QMSS series and satisfy ROHS3 compliance requirements. Selection between these parts should be based on inventory availability and procurement lead times, as both parts are electrically and mechanically equivalent for all specified parameters. The QMSS-052-06.75-L-D-PC4 currently maintains higher inventory levels (916 pcs versus 782 pcs), which may influence supply chain decisions.

Frequently Asked Questions (FAQ)

Q: Are these parts electrically interchangeable? A: Yes. Both parts share identical electrical specifications including 104 positions, 0.025" pitch, gold contact finish at 10.0µin thickness, and ROHS3 compliance.

Q: What is the difference between QMSS-052-01-L-D-EM2-PC4 and QMSS-052-06.75-L-D-PC4? A: The parts are functionally equivalent across all critical parameters. Differences in part number designations reflect design variants that do not affect interconnect performance or board-level integration.

Q: Can I use QMSS-052-06.75-L-D-PC4 as a direct replacement? A: Yes. The substitute part maintains identical mechanical dimensions (0.265" height above board, 11mm mated stacking height), pitch spacing, and contact configuration.

Q: Are both parts RoHS compliant? A: Yes. Both QMSS-052-01-L-D-EM2-PC4 and QMSS-052-06.75-L-D-PC4 are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating.

Q: What packaging format is used for these connectors? A: Both parts are supplied in Tray packaging suitable for surface mount assembly processes.