TSW-139-07-L-D Equivalent & Substitute Parts

Part Overview

The TSW-139-07-L-D is a rectangular connector header manufactured by Samtec Inc., designed for through-hole board-to-board or cable applications. This vertical header features 78 positions arranged in 2 rows with 0.100" (2.54mm) pitch spacing. The connector is currently in active product status with 1038 units in stock.

Substitute parts become necessary when the primary part reaches end-of-life, experiences supply constraints, or when design requirements permit alternative configurations that maintain functional compatibility within specified electrical and mechanical tolerances.

Substiute Parts

TSW-139-07-L-D

Samtec Inc.In Stock: 1130TSW-139-07-L-D Datasheet

Current PartRFQ

4-103186-0

TE Connectivity AMP ConnectorsIn Stock: 1263394-103186-0 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TSW-139-07-L-D is determined by the following critical parameters:

• Pitch spacing: 0.100" (2.54mm) mating pitch is mandatory
• Row configuration: 2-row arrangement with 0.100" row spacing
• Contact type: Male pin headers for through-hole mounting
• Termination method: Solder termination
• Mounting style: Through-hole board-to-board or cable connection
• Contact finish: Gold-plated mating surface

The substitute part 4-103186-0 (TE Connectivity AMP Connectors AMPMODU Mod II series) meets these core substitution criteria with the following considerations: it maintains identical mating pitch and row spacing, uses the same contact type and termination method, and provides equivalent through-hole mounting. However, differences exist in position count (80 vs. 78), insulation material composition, operating temperature range, and compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

The TSW-139-07-L-D remains the preferred selection for new designs due to its active product status and ROHS3 compliance certification. This connector is suitable for applications requiring extended operating temperature range (-55°C to 125°C) and modern regulatory compliance.

The 4-103186-0 substitute is classified as obsolete and does not meet current RoHS requirements. Selection of this part is limited to legacy system maintenance or applications where RoHS non-compliance is acceptable. The 80-position configuration of the substitute exceeds the 78-position requirement of the primary part, necessitating careful PCB layout verification to ensure mechanical and electrical compatibility. The reduced upper operating temperature limit (-65°C to 105°C maximum) and different insulation material composition present additional constraints for temperature-sensitive applications.

Frequently Asked Questions (FAQ)

Q: Can the 4-103186-0 directly replace the TSW-139-07-L-D in existing designs?

A: Direct replacement requires design review. Both connectors share identical mating pitch (0.100"), row spacing, contact type, and termination method. However, the substitute has 80 positions versus 78, different post length (0.120" vs. 0.100"), and reduced insulation height (0.090" vs. 0.100"). PCB footprint and clearance verification is necessary.

Q: What are the compliance implications of using the 4-103186-0?

A: The 4-103186-0 is RoHS non-compliant, whereas the TSW-139-07-L-D meets ROHS3 requirements. Applications subject to RoHS regulations must use the primary part or identify an alternative that meets compliance standards.

Q: How do the operating temperature ranges differ?

A: The TSW-139-07-L-D operates from -55°C to 125°C, while the 4-103186-0 operates from -65°C to 105°C. Applications requiring temperatures above 105°C must use the primary part.

Q: Are the contact finishes equivalent?

A: Both use gold-plated mating surfaces. The primary part specifies 10.0µin (0.25µm) thickness, while the substitute specifies 15.0µin (0.38µm). The post finish differs: the primary uses tin, the substitute uses tin-lead. These differences do not prevent functional substitution in most applications.

Q: What is the significance of the breakaway feature on the substitute?

A: The 4-103186-0 includes a breakaway design feature, allowing individual connector sections to be separated. The TSW-139-07-L-D does not include this feature. This difference affects mechanical handling and assembly procedures but does not impact electrical performance.