TSW-125-07-L-D Equivalent & Substitute Parts

Part Overview

The TSW-125-07-L-D is a rectangular connector header manufactured by Samtec Inc., designed for through-hole board-to-board or cable applications. This connector features 50 positions arranged in 2 rows with a 0.100" (2.54mm) pitch and is currently in active production status. The part utilizes gold-plated mating contacts and tin-plated posts with phosphor bronze material, operating across a temperature range of -55°C to 125°C. Identification of equivalent and substitute parts becomes necessary when addressing supply chain constraints, design revisions, or when transitioning between active and obsolete product lines while maintaining functional compatibility.

Substiute Parts

TSW-125-07-L-D

Samtec Inc.In Stock: 1011TSW-125-07-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-125-07-L-D is determined by the following critical parameters: connector type (header), contact type (male pin), mating pitch (0.100" / 2.54mm), row spacing (0.100" / 2.54mm), mounting method (through hole), termination type (solder), contact finish on mating surface (gold), and insulation material composition. The substitute part 4-103186-0 (TE Connectivity AMP Connectors AMPMODU Mod II series) shares these core electrical and mechanical characteristics, enabling functional equivalence in applications requiring 2.54mm pitch header connectors with gold-plated mating contacts and solder termination.

Differences in position count (80 vs. 50), insulation height, contact post length, and product status do not preclude substitution when the application circuit design accommodates the higher position density and mechanical envelope of the substitute part.

Parameter Comparison

Engineering Selection Recommendations

The TSW-125-07-L-D maintains active product status with ROHS3 compliance, making it the preferred choice for new designs and applications subject to RoHS regulations. The 4-103186-0 substitute is classified as obsolete and does not meet RoHS compliance requirements, limiting its application to legacy system maintenance or non-regulated environments where existing inventory must be utilized.

Selection between these parts should be based on regulatory requirements, supply availability, and mechanical fit within the target application. The substitute part's higher position count (80 vs. 50) and extended lower operating temperature limit (-65°C vs. -55°C) may provide advantages in specific thermal or density-constrained applications, provided the circuit design accommodates the additional positions and the RoHS non-compliance status is acceptable.

Frequently Asked Questions (FAQ)

Q: Can the 4-103186-0 be used as a direct replacement for the TSW-125-07-L-D in new product designs?

A: The 4-103186-0 shares core electrical and mechanical characteristics (2.54mm pitch, gold-plated mating contacts, solder termination, through-hole mounting) but is classified as obsolete and does not meet ROHS3 compliance. Use in new designs is not recommended unless regulatory exemptions apply and long-term supply is confirmed.

Q: What are the key differences in mechanical envelope between these parts?

A: The 4-103186-0 accommodates 80 positions versus 50 for the TSW-125-07-L-D, resulting in a larger overall footprint. Insulation height differs (0.090" vs. 0.100"), and contact post length varies (0.120" vs. 0.100"). PCB layout and mating connector clearances must be verified before substitution.

Q: Are there compatibility concerns with mating connectors?

A: Both parts utilize 0.100" (2.54mm) pitch headers with 2-row configuration and gold-plated mating contacts. Standard 2.54mm pitch receptacles designed for either series should mate successfully, though mechanical fit should be confirmed given the differences in insulation height and overall contact length.

Q: How do the operating temperature ranges compare?

A: The TSW-125-07-L-D operates from -55°C to 125°C, while the 4-103186-0 operates from -65°C to 105°C. The substitute provides lower temperature capability but reduced upper temperature limit. Application thermal requirements must be evaluated against these specifications.

Q: What is the significance of the RoHS compliance difference?

A: The TSW-125-07-L-D is ROHS3 compliant, meeting current regulatory requirements for products sold in regulated markets. The 4-103186-0 is RoHS non-compliant, restricting its use to applications exempt from RoHS regulations or legacy system support where compliance is not required.