TSW-126-14-L-S Equivalent & Substitute Parts

Part Overview

The TSW-126-14-L-S is a rectangular connector header manufactured by Samtec Inc., designed for through-hole mounting applications. This connector features 26 positions with 0.100" (2.54mm) pitch spacing and is classified as an unshrouded, board-to-board or cable connector with solder termination. The part maintains active product status and is ROHS3 compliant with UL94 V-0 flammability rating.

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 parameters.

Substiute Parts

TSW-126-14-L-S

Samtec Inc.In Stock: 821TSW-126-14-L-S Datasheet

Current PartRFQ

4-103321-0

TE Connectivity AMP ConnectorsIn Stock: 10234-103321-0 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TSW-126-14-L-S is determined by the following critical parameters:

• Pitch - Mating: 0.100" (2.54mm) — must match exactly for PCB footprint compatibility
• Connector Type: Header with male pin contact type
• Mounting Type: Through Hole
• Termination: Solder
• Contact Shape: Square
• Insulation Material: Thermoplastic or equivalent polymer

The substitute part 4-103321-0 (TE Connectivity AMP Connectors) shares the same mating pitch, connector type, mounting method, and termination approach. However, this part features 40 positions rather than 26, indicating it is a higher-density variant within the same connector family. The substitute maintains compatibility with the core electrical and mechanical interface standards while offering expanded position capacity.

Parameter Comparison

Engineering Selection Recommendations

The TSW-126-14-L-S maintains active product status with full ROHS3 compliance and current availability. Selection of this part is appropriate for new designs and ongoing production where 26-position configuration meets application requirements.

The substitute part 4-103321-0 carries obsolete product status, indicating discontinued manufacturing and limited future availability. This part does not maintain ROHS3 compliance status. Use of this substitute is restricted to legacy system maintenance or applications where 40-position capacity is required and design modifications are feasible.

Key differences affecting selection:

• Position count: TSW-126-14-L-S provides 26 positions; 4-103321-0 provides 40 positions
• Contact finish: TSW-126-14-L-S uses gold plating; 4-103321-0 uses tin-lead plating
• Temperature range: TSW-126-14-L-S operates -55°C to 125°C; 4-103321-0 operates -65°C to 105°C
• Regulatory compliance: TSW-126-14-L-S is ROHS3 compliant; 4-103321-0 compliance status is not applicable

For new designs, the TSW-126-14-L-S is the preferred selection. Substitution with 4-103321-0 requires PCB layout modification to accommodate the increased position count and altered insulation height.

Frequently Asked Questions (FAQ)

Q: Can 4-103321-0 be used as a direct replacement for TSW-126-14-L-S?

A: No. While both connectors share 0.100" (2.54mm) pitch spacing and through-hole solder termination, the 4-103321-0 features 40 positions compared to 26 positions in the TSW-126-14-L-S. Direct substitution requires PCB footprint modification. Additionally, the insulation height differs (0.090" versus 0.100"), affecting board clearance.

Q: What are the critical compatibility parameters?

A: Mating pitch (0.100" / 2.54mm), connector type (header with male pins), mounting method (through-hole), and termination type (solder) are the primary compatibility determinants. Position count, contact finish, and insulation material are secondary parameters that may require design evaluation.

Q: Is the TSW-126-14-L-S suitable for high-temperature applications?

A: The TSW-126-14-L-S operates across -55°C to 125°C, supporting high-temperature environments within this range. The 4-103321-0 operates -65°C to 105°C, providing lower maximum temperature capability.

Q: What is the significance of the gold versus tin-lead contact finish?

A: Gold plating on the TSW-126-14-L-S provides superior corrosion resistance and lower contact resistance. Tin-lead plating on the 4-103321-0 is suitable for standard applications but offers reduced corrosion protection. Contact finish selection depends on environmental exposure and signal integrity requirements.

Q: Does the TSW-126-14-L-S meet current regulatory requirements?

A: Yes. The TSW-126-14-L-S is ROHS3 compliant and carries UL94 V-0 flammability rating. The 4-103321-0 does not maintain current ROHS3 compliance status, limiting its use in applications requiring regulatory adherence.

Q: What is the difference between the connector series?

A: The TSW-126-14-L-S belongs to the Samtec TSW series, while the 4-103321-0 belongs to the TE Connectivity AMPMODU Mod II series. These represent distinct connector families with different mechanical and electrical specifications despite sharing the same mating pitch.