QFSS-016-04.25-L-D-DP-PC4-P Equivalent & Substitute Parts

Part Overview

The QFSS-016-04.25-L-D-DP-PC4-P is a 40-position differential pair array connector manufactured by Samtec Inc. within the Q2™ QFSS series. This surface mount rectangular connector features shielded differential pair architecture with integrated power pins (8 positions) and ground bus plane, designed for high-speed signal integrity applications. The part is Active status with 747 units in current inventory. Equivalent and substitute parts are identified when identical electrical and mechanical parameters are maintained across the connector family, enabling component interchangeability for procurement flexibility and supply chain continuity.

Substiute Parts

QFSS-016-04.25-L-D-DP-PC4-P

Samtec Inc.In Stock: 794QFSS-016-04.25-L-D-DP-PC4-P Datasheet

Current PartRFQ

QFSS-016-04.25-L-D-DP-PT4

Samtec Inc.In Stock: 763QFSS-016-04.25-L-D-DP-PT4 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the QFSS-016-04.25-L-D-DP-PC4-P is determined by strict equivalence across the following critical parameters:

Position count and power pin configuration (40 total with 32 differential + 8 power) Pitch specification (0.025" / 0.64mm) Row configuration (2 rows) Connector type (Differential Pair Array, Female) Mounting technology (Surface Mount) Contact finish and thickness (Gold, 10.0µin) Mechanical features (Board Guide, Ground Bus, Shielded) Stacking heights (11mm mated, 0.278" above board) Series family (Q2™ QFSS) Compliance certifications (ROHS3, MSL 1)

The substitute part QFSS-016-04.25-L-D-DP-PT4 maintains identical electrical and mechanical parameters across all criteria listed above, differing only in the connector termination style designation within the same base product family (QFSS-016).

Parameter Comparison

Engineering Selection Recommendations

Both the QFSS-016-04.25-L-D-DP-PC4-P and QFSS-016-04.25-L-D-DP-PT4 maintain Active product status within the Samtec Q2™ QFSS series. Both parts are ROHS3 compliant and carry MSL 1 (Unlimited) moisture sensitivity classification, indicating equivalent environmental and regulatory compliance. Selection between these parts is based on termination style requirements specific to the application and PCB design. The QFSS-016-04.25-L-D-DP-PC4-P currently maintains higher inventory availability (747 units) compared to the PT4 variant (688 units).

Frequently Asked Questions (FAQ)

Q: What is the difference between QFSS-016-04.25-L-D-DP-PC4-P and QFSS-016-04.25-L-D-DP-PT4?

A: Both parts are electrically and mechanically identical 40-position differential pair array connectors within the Q2™ QFSS series. The difference lies in the termination style designation (PC4 versus PT4), which reflects connector termination technology. All critical parameters including position count, pitch, row configuration, stacking heights, and compliance certifications are identical.

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

A: Interchangeability depends on the PCB design specification for termination style. If the design specifies either PC4 or PT4 termination, only that variant is appropriate. Verify the PCB footprint and termination requirements before substitution.

Q: Are both parts currently available?

A: Yes. QFSS-016-04.25-L-D-DP-PC4-P has 747 units in stock, and QFSS-016-04.25-L-D-DP-PT4 has 688 units in stock.

Q: Do these connectors meet RoHS requirements?

A: Yes. Both parts are ROHS3 compliant.

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

A: Both parts carry MSL 1 (Unlimited), indicating no moisture sensitivity restrictions for storage or handling.

Q: What are the key electrical parameters that define substitution eligibility?

A: Position count (40 total with 32 differential + 8 power), pitch (0.025" / 0.64mm), differential pair architecture, and shielded configuration are the primary electrical parameters. Mechanical parameters include surface mount technology, gold contact finish (10.0µin thickness), board guide, ground bus plane, and specified stacking heights.