TSW-139-14-L-S Equivalent & Substitute Parts

Part Overview

The TSW-139-14-L-S is a rectangular connector header manufactured by Samtec Inc., designed for through-hole mounting applications. This 39-position, single-row connector 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 are identified to provide alternative sourcing options when the primary part becomes unavailable or when design flexibility is required.

Substiute Parts

TSW-139-14-L-S

Samtec Inc.In Stock: 1102TSW-139-14-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-139-14-L-S is determined by the following critical parameters:

• Pitch - Mating: 0.100" (2.54mm) — must match exactly for mechanical and electrical compatibility
• Connector Type: Header with male pin contacts
• Mounting Type: Through hole solder termination
• Number of Rows: Single row configuration
• Contact Shape: Square contacts
• Fastening Type: Push-pull mechanism

The identified substitute part 4-103321-8 (TE Connectivity AMP Connectors) shares the same mating pitch, connector type, mounting method, and contact configuration. However, this part contains 40 positions compared to the 39-position main part, representing a minor position count variance within the same connector family. Both parts maintain compatibility with standard 0.100" (2.54mm) pitch receptacles and employ identical solder termination and push-pull fastening systems.

Parameter Comparison

Engineering Selection Recommendations

The TSW-139-14-L-S remains the primary selection as an active product with current manufacturer support and full availability. Both parts maintain ROHS3 compliance and UL94 V-0 flammability certification, meeting regulatory requirements for industrial and commercial applications.

The substitute part 4-103321-8 is classified as obsolete, indicating discontinued production and limited future availability. Selection of this substitute should be limited to applications where the 40-position configuration accommodates design requirements and where long-term supply chain continuity is not a critical factor.

Key differentiation factors include contact finish composition (gold versus tin), contact material (phosphor bronze versus copper alloy), and operating temperature range. The main part supports extended high-temperature operation to 125°C, while the substitute is rated to 105°C maximum. These material and thermal differences may influence performance in specific environmental conditions.

Frequently Asked Questions (FAQ)

Q: Can the 4-103321-8 (40-position) directly replace the TSW-139-14-L-S (39-position)?

A: Both connectors share identical 0.100" (2.54mm) mating pitch, single-row configuration, square contact geometry, and push-pull fastening. The 40-position substitute accommodates one additional contact position. Direct substitution is mechanically and electrically feasible when the application design permits the extra position or when that position remains unloaded.

Q: What are the material differences between these connectors?

A: The main part uses phosphor bronze contacts with gold mating finish and PBT insulation. The substitute employs copper alloy contacts with tin mating finish and thermoplastic insulation. These material variations affect contact resistance, corrosion resistance, and thermal performance characteristics.

Q: Are both connectors suitable for the same temperature range?

A: No. The TSW-139-14-L-S operates from -55°C to 125°C, while the 4-103321-8 operates from -65°C to 105°C. Applications requiring sustained operation above 105°C must use the main part.

Q: What is the significance of the obsolete status for the substitute part?

A: Obsolete status indicates the manufacturer has discontinued production. While existing inventory may be available, future procurement cannot be guaranteed. New designs should prioritize the active TSW-139-14-L-S for long-term supply chain reliability.

Q: Do both connectors meet the same compliance standards?

A: Yes. Both parts are ROHS3 compliant, UL94 V-0 rated, and carry MSL 1 (Unlimited) moisture sensitivity classification, meeting equivalent regulatory and environmental standards.