TSW-140-14-S-S Equivalent & Substitute Parts

Part Overview

The TSW-140-14-S-S is a rectangular connector header manufactured by Samtec Inc., designed for through-hole mounting applications. This 40-position, single-row connector operates at 0.100" (2.54mm) pitch and is classified as an active product. Substitute parts become necessary when addressing supply chain constraints, obsolescence of related components, or when design requirements permit alternative connector series that maintain electrical and mechanical compatibility.

Substiute Parts

TSW-140-14-S-S

Samtec Inc.In Stock: 721TSW-140-14-S-S Datasheet

Current PartRFQ

4-102976-0

TE Connectivity AMP ConnectorsIn Stock: 9854-102976-0 Datasheet

MFR RecommendedRFQ

9-146277-0

TE Connectivity AMP ConnectorsIn Stock: 19369-146277-0 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TSW-140-14-S-S is determined by the following critical parameters:

• Pitch and Position Count: Substitute parts must maintain 0.100" (2.54mm) mating pitch and 40-position configuration to ensure PCB footprint compatibility.
• Connector Type and Contact Configuration: Male pin headers with unshrouded, board-to-board or cable-compatible design are required.
• Mounting and Termination: Through-hole solder termination with push-pull fastening type must be preserved.
• Contact Finish: Gold-plated mating contacts with tin or tin-lead post finish are acceptable.
• Insulation Material: PBT, thermoplastic, or liquid crystal polymer (LCP) insulation materials are compatible.
• Operating Temperature: Substitute parts must support the application's thermal requirements within the specified range.
• Compliance: RoHS3 compliance or equivalent regulatory status is required for new designs.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: 9-146277-0 (TE Connectivity)

The 9-146277-0 is the preferred substitute for the TSW-140-14-S-S. Both parts are active products with ROHS3 compliance, ensuring regulatory alignment for current and future designs. The 9-146277-0 maintains identical pitch, position count, and mounting configuration. Minor dimensional variations in contact length and insulation height fall within acceptable tolerances for standard PCB applications. The LCP insulation material provides enhanced thermal and chemical resistance compared to PBT. Current rating of 3A is specified for the TE part, whereas the Samtec part does not specify current rating; applications requiring current specifications should verify compatibility.

Secondary Substitute: 4-102976-0 (TE Connectivity)

The 4-102976-0 shares identical electrical and mechanical specifications with the 9-146277-0 but carries obsolete product status. This part is suitable only for legacy system maintenance or when existing inventory is available. New designs should not incorporate this part number.

Compatibility Considerations

All three parts feature identical 0.100" (2.54mm) pitch and 40-position configuration, ensuring direct PCB footprint compatibility. Operating temperature ranges differ: the TSW-140-14-S-S supports -55°C to 125°C, while both TE Connectivity alternatives support -65°C to 105°C. Applications operating above 105°C require the Samtec part. Contact post length variations (0.110" for Samtec versus 0.125" for TE Connectivity) may affect solder joint geometry; PCB design should accommodate these differences through appropriate via placement and trace routing.

Frequently Asked Questions (FAQ)

Q: Can the 9-146277-0 be used as a direct replacement for the TSW-140-14-S-S?

A: Yes, the 9-146277-0 is electrically and mechanically compatible. Both parts maintain 0.100" (2.54mm) pitch, 40-position configuration, and through-hole solder termination. Minor dimensional differences in contact length and insulation height are within acceptable tolerances for standard applications. Verify that your application's operating temperature does not exceed 105°C, as the TE Connectivity part has a lower maximum temperature rating.

Q: What is the difference between the 4-102976-0 and 9-146277-0?

A: Both parts are from the TE Connectivity AMPMODU Mod II series with identical electrical and mechanical specifications. The primary difference is product status: the 4-102976-0 is obsolete, while the 9-146277-0 is active. The 4-102976-0 uses tin-lead post finish, whereas the 9-146277-0 uses tin post finish. New designs should use the 9-146277-0.

Q: Are there any compliance differences between these parts?

A: The TSW-140-14-S-S and 9-146277-0 are both ROHS3 compliant. The 4-102976-0 carries "Not applicable" RoHS status due to its obsolete classification. All three parts are classified as EAR99 and share the same HTSUS code (8536.69.4040).

Q: What is the impact of different insulation materials on performance?

A: The TSW-140-14-S-S uses PBT insulation, while the 9-146277-0 uses LCP. LCP provides superior thermal stability and chemical resistance, making it suitable for demanding environments. Both materials meet UL94 V-0 flammability requirements. Material selection does not affect electrical performance for standard applications.

Q: How do contact length differences affect PCB design?

A: The TSW-140-14-S-S has a post length of 0.110" (2.79mm), while the TE Connectivity alternatives have 0.125" (3.18mm). This 0.015" difference may require adjustment to via placement depth and solder joint design. Consult PCB design guidelines for your specific manufacturing process to ensure adequate solder coverage and mechanical strength.

Q: Which part should I specify for new designs?

A: For new designs, specify the 9-146277-0 (TE Connectivity). It is an active product with ROHS3 compliance and superior insulation material properties. The TSW-140-14-S-S remains a valid choice if your application requires the higher operating temperature range (-55°C to 125°C) or if you have established supply relationships with Samtec.