DW-02-09-F-D-250 Equivalent & Substitute Parts

Part Overview

The DW-02-09-F-D-250 is a 4-position header spacer connector manufactured by Samtec Inc. in the Flex Stack, DW series. This through-hole rectangular connector features 0.100" (2.54mm) pitch spacing, gold-plated contacts, and is designed for applications requiring compact, stackable header connections. The part is currently active in production with ROHS3 compliance and maintains inventory availability of 1126 pieces.

Substitute parts are identified when equivalent electrical and mechanical parameters align within the allowed tolerances for this connector category, enabling direct functional replacement in applications where the primary part becomes unavailable or when design requirements necessitate alternative sourcing.

Substiute Parts

DW-02-09-F-D-250

Samtec Inc.In Stock: 1172DW-02-09-F-D-250 Datasheet

Current PartRFQ

4-146492-0

TE Connectivity AMP ConnectorsIn Stock: 10274-146492-0 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the DW-02-09-F-D-250 is determined by the following critical parameters:

• Pitch and Row Configuration: 0.100" (2.54mm) pitch with 2-row arrangement
• Mounting and Termination: Through-hole solder termination
• Contact Material: Gold-plated mating posts
• Physical Form Factor: Header spacer connector classification

The identified substitute part 4-146492-0 (TE Connectivity AMP Connectors) shares the same pitch, row spacing, mounting type, termination method, and contact finish material. However, this substitute differs significantly in position count (80 positions versus 4 positions) and stack height (0.400" versus 0.250"), making it suitable only for applications where these dimensional differences are accommodated by the circuit board layout and mechanical design.

Parameter Comparison

Engineering Selection Recommendations

The DW-02-09-F-D-250 maintains active production status with ROHS3 compliance certification. The substitute part 4-146492-0 is also active but carries RoHS non-compliance status, which may restrict its use in applications subject to RoHS regulatory requirements.

Selection between these parts must account for:

• Position Count Compatibility: The 4-position DW-02-09-F-D-250 and 80-position 4-146492-0 serve fundamentally different circuit board layouts. Substitution is only viable if the application design can accommodate the 80-position connector footprint.
• Stack Height Differential: The 0.150" (3.810mm) increase in stack height for the substitute part affects vertical clearance and component spacing on the PCB.
• Regulatory Compliance: Applications requiring RoHS certification must use the DW-02-09-F-D-250. The 4-146492-0 is restricted to non-RoHS applications.
• Contact Post Length: The 0.040" (1.018mm) reduction in mating post length on the substitute part may impact connector engagement depth.

Frequently Asked Questions (FAQ)

Q: Can the 4-146492-0 directly replace the DW-02-09-F-D-250 on an existing PCB?

A: Direct PCB replacement is not feasible. The 4-146492-0 is an 80-position connector versus the 4-position DW-02-09-F-D-250, requiring a completely different footprint and board layout. Substitution is only possible in new designs where the circuit board can be redesigned to accommodate the larger connector.

Q: What are the critical parameters that must match for substitution?

A: Pitch (0.100"), row configuration (2 rows), mounting type (through-hole), termination method (solder), and contact finish (gold) must remain constant. Position count and stack height are application-dependent and may vary based on design requirements.

Q: Does the RoHS compliance difference affect electrical performance?

A: RoHS compliance relates to material composition and environmental regulations, not electrical performance. However, it determines regulatory acceptability. Applications subject to RoHS directives must use the DW-02-09-F-D-250.

Q: Are there inventory considerations for these parts?

A: Both parts maintain active inventory status. The DW-02-09-F-D-250 has 1126 pieces in stock, while the 4-146492-0 has 1003 pieces available.

Q: What is the significance of the contact finish thickness difference?

A: The DW-02-09-F-D-250 specifies 3.00µin (0.076µm) gold thickness, while the 4-146492-0 specifies 15.0µin (0.38µm). Both thicknesses are within industry standards for gold-plated connectors and do not affect functional compatibility in standard applications.