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

Part Overview

The TSW-140-14-L-S is a vertical through-hole rectangular connector header manufactured by Samtec Inc. in the TSW series. This 40-position connector operates at 0.100" (2.54mm) pitch and is designed for board-to-board or cable applications. The part is currently active in production status. Equivalent and substitute parts become necessary when addressing supply chain constraints, design revisions, or when transitioning between active and obsolete product lines within compatible connector families.

Substiute Parts

TSW-140-14-L-S

Samtec Inc.In Stock: 1099TSW-140-14-L-S Datasheet

Current PartRFQ

4-103321-0

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

MFR RecommendedRFQ

4-103321-8

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

MFR RecommendedRFQ

9-146274-0

TE Connectivity AMP ConnectorsIn Stock: 12909-146274-0 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

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

• Pitch and Position Compatibility: All substitute parts maintain 0.100" (2.54mm) mating pitch and 40-position configuration
• Connector Class: Header type with male pin contacts, unshrouded, single-row layout
• Mounting and Termination: Through-hole solder termination with push-pull fastening
• Contact Geometry: Square contact shape with equivalent mating and post lengths within tolerance
• Environmental Compliance: UL94 V-0 flammability rating and MSL 1 classification across all parts
• Electrical Characteristics: All parts rated for 3A current capacity

The substitute parts listed (4-103321-0, 4-103321-8, 9-146274-0) are from the TE Connectivity AMPMODU Mod II series and maintain mechanical and electrical compatibility with the TSW-140-14-L-S within the specified parameter ranges.

Parameter Comparison

Engineering Selection Recommendations

Primary Selection - Active Status Parts:

For new designs and ongoing production, 9-146274-0 is the preferred substitute. This part maintains active product status, carries RoHS compliance certification, and REACH unaffected status matching the TSW-140-14-L-S. The LCP insulation material provides enhanced thermal and mechanical stability compared to standard thermoplastic alternatives.

Secondary Selection - Compliance Considerations:

4-103321-8 is available as an alternative with ROHS3 compliance and higher inventory levels (2828 pcs). However, this part carries obsolete product status, indicating potential long-term supply constraints.

Not Recommended for New Designs:

4-103321-0 is obsolete and lacks RoHS3 compliance, making it unsuitable for applications requiring current regulatory adherence.

Design Transition Notes:

Minor dimensional variations exist between the main part and substitutes. The TSW-140-14-L-S features a 0.100" insulation height and gold-plated mating contacts, while all TE substitutes have 0.090" insulation height and tin or tin-lead finishes. The operating temperature range of the main part (-55°C ~ 125°C) exceeds the substitute parts (-65°C ~ 105°C) at the upper limit. These differences require PCB layout verification and thermal profile assessment during design transition.

Frequently Asked Questions (FAQ)

Q: Can 9-146274-0 be used as a direct replacement for TSW-140-14-L-S in existing designs?

A: Mechanical compatibility is confirmed through matching pitch (0.100"), position count (40), contact type (male pin), and mounting method (through-hole solder). Minor dimensional differences in insulation height (0.090" vs 0.100") and contact finish (tin vs gold) require PCB layout review to ensure proper mating clearances and contact reliability.

Q: What is the difference between 4-103321-0 and 4-103321-8?

A: Both parts are from the AMPMODU Mod II series with identical mechanical specifications. The primary difference is contact finish: 4-103321-0 uses tin-lead while 4-103321-8 uses tin. Additionally, 4-103321-8 carries ROHS3 compliance while 4-103321-0 does not. Both parts are obsolete.

Q: Why does 9-146274-0 have different insulation material (LCP) compared to the main part (PBT)?

A: Liquid Crystal Polymer (LCP) provides superior thermal stability and dimensional consistency compared to polybutylene terephthalate (PBT). This material change is a design evolution within the AMPMODU Mod II series and does not affect mechanical or electrical compatibility for standard applications.

Q: Are there temperature range limitations when substituting?

A: The TSW-140-14-L-S operates from -55°C to 125°C, while all TE substitutes operate from -65°C to 105°C. Applications requiring operation above 105°C cannot use these substitutes. The lower temperature limit of the substitutes (-65°C vs -55°C) provides additional margin for cold environment applications.

Q: What is the inventory status for each part?

A: TSW-140-14-L-S: 1038 pcs; 4-103321-0: 980 pcs; 4-103321-8: 2828 pcs; 9-146274-0: 1197 pcs. Inventory levels are subject to change and should be verified at time of procurement.

Q: Do all parts meet the same compliance standards?

A: All parts carry UL94 V-0 flammability rating and MSL 1 classification. RoHS compliance differs: TSW-140-14-L-S and 4-103321-8 are ROHS3 compliant; 9-146274-0 is RoHS compliant; 4-103321-0 is not applicable. REACH status is unaffected for TSW-140-14-L-S and 9-146274-0, while vendor status is undefined for the TE 4-103321 series.