TSW-128-14-L-S Equivalent & Substitute Parts

Part Overview

The TSW-128-14-L-S is a rectangular connector header manufactured by Samtec Inc., designed for through-hole mounting applications. This 28-position, single-row header operates at 0.100" (2.54mm) pitch and is classified as an active product. The connector features unshrouded design with solder termination and push-pull fastening, suitable for board-to-board or cable interconnection in industrial and commercial applications.

Substitute parts become necessary when the primary part reaches end-of-life status, inventory constraints occur, or design requirements necessitate alternative connector configurations with compatible electrical and mechanical characteristics.

Substiute Parts

TSW-128-14-L-S

Samtec Inc.In Stock: 804TSW-128-14-L-S Datasheet

Current PartRFQ

4-103321-8

TE Connectivity AMP ConnectorsIn Stock: 28654-103321-8 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TSW-128-14-L-S is determined by the following critical parameters:

Primary Compatibility Criteria:

• Pitch - Mating: 0.100" (2.54mm) — must match exactly for mechanical interchangeability
• Contact Type: Male Pin — determines mating interface
• Mounting Type: Through Hole — establishes PCB assembly method
• Termination: Solder — defines connection technology
• Number of Rows: 1 — specifies connector geometry
• Contact Shape: Square — ensures contact compatibility

Secondary Compatibility Criteria:

• Operating Temperature Range: Must encompass or match the application environment
• Material Flammability Rating: UL94 V-0 compliance required for safety-critical applications
• RoHS Status: ROHS3 Compliant for regulatory alignment
• Moisture Sensitivity Level: 1 (Unlimited) for storage and handling compatibility

The substitute part 4-103321-8 (TE Connectivity AMP Connectors) shares the core mechanical and electrical characteristics required for functional substitution, though position count differs (40 positions versus 28 positions). This difference requires design-level evaluation for specific applications.

Parameter Comparison

Engineering Selection Recommendations

TSW-128-14-L-S (Primary Selection): The TSW-128-14-L-S maintains active product status with ROHS3 compliance and extended operating temperature range (-55°C ~ 125°C). Gold-plated mating contacts and phosphor bronze material provide enhanced contact reliability. This part is recommended for new designs and applications requiring long-term supply continuity.

4-103321-8 (Substitute Selection): The 4-103321-8 is classified as obsolete and should be considered only when inventory of the primary part is unavailable and design constraints permit position count variation (40 positions versus 28 positions). This substitute maintains ROHS3 compliance and UL94 V-0 flammability rating. The reduced operating temperature maximum (105°C versus 125°C) and tin-plated contacts require evaluation against specific application thermal and environmental requirements. The breakaway feature provides additional mechanical flexibility for certain assembly scenarios.

Both parts meet core regulatory requirements (ROHS3, UL94 V-0) and share identical pitch, contact type, and mounting methodology, establishing functional compatibility within the constraints noted above.

Frequently Asked Questions (FAQ)

Q: Can the 4-103321-8 directly replace the TSW-128-14-L-S in existing designs?

A: Direct replacement requires design evaluation. Both connectors share 0.100" (2.54mm) pitch, male pin contact type, through-hole mounting, and solder termination. However, the 4-103321-8 provides 40 positions versus 28 positions in the TSW-128-14-L-S. PCB layout and connector footprint compatibility must be confirmed. The reduced operating temperature maximum (105°C versus 125°C) must be assessed against application requirements.

Q: What are the key differences in contact materials between these parts?

A: The TSW-128-14-L-S features phosphor bronze contacts with gold plating (10.0µin thickness) on mating surfaces. The 4-103321-8 uses copper alloy contacts with tin plating (100.0µin thickness). Gold plating provides superior corrosion resistance and contact reliability, while tin plating offers cost efficiency. Contact material selection depends on environmental exposure and reliability requirements.

Q: Are both parts RoHS compliant?

A: Yes, both the TSW-128-14-L-S and 4-103321-8 are ROHS3 compliant. Both also carry UL94 V-0 flammability ratings and unlimited moisture sensitivity level (MSL 1), meeting standard regulatory and handling requirements for commercial and industrial applications.

Q: What is the significance of the breakaway feature on the 4-103321-8?

A: The breakaway feature on the 4-103321-8 allows individual connector sections to be separated after assembly, providing design flexibility for applications requiring modular or configurable connector arrangements. The TSW-128-14-L-S does not include this feature.

Q: How do the operating temperature ranges compare?

A: The TSW-128-14-L-S operates from -55°C to 125°C, while the 4-103321-8 operates from -65°C to 105°C. The TSW-128-14-L-S provides a higher maximum operating temperature, making it more suitable for high-temperature applications. The 4-103321-8 offers lower minimum temperature capability, beneficial for extreme cold environments.