TSW-131-07-S-S Equivalent & Substitute Parts

Part Overview

The TSW-131-07-S-S is a rectangular connector header manufactured by Samtec Inc., designed for through-hole mounting applications. This 31-position, single-row header operates at 0.100" (2.54mm) pitch and features gold-plated mating contacts with tin-plated posts. The connector maintains an active product status with full inventory availability. Substitute parts become necessary when design requirements demand higher position counts, alternative contact finishes, or when sourcing from alternative manufacturers is required for supply chain optimization.

Substiute Parts

TSW-131-07-S-S

Samtec Inc.In Stock: 1012TSW-131-07-S-S Datasheet

Current PartRFQ

4-103185-0

TE Connectivity AMP ConnectorsIn Stock: 15934-103185-0 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TSW-131-07-S-S is determined by the following critical parameters:

Primary Compatibility Criteria:

• Pitch - Mating: 0.100" (2.54mm) — must match exactly for mechanical interchangeability
• Contact Type: Male Pin — determines mating interface
• Mounting Type: Through Hole — establishes PCB assembly method
• Termination: Solder — defines connection method
• Number of Rows: 1 — establishes form factor

Secondary Compatibility Criteria:

• Number of Positions: May vary within design constraints
• Contact Finish - Mating: Gold preferred for signal integrity
• Insulation Material: PBT or equivalent thermoplastic acceptable
• Operating Temperature Range: Must encompass application requirements
• Material Flammability Rating: UL94 V-0 compliance required

The substitute part 4-103185-0 (TE Connectivity AMP Connectors) shares the primary compatibility criteria with matching pitch, contact type, mounting method, and termination. However, this part is classified as Obsolete and features a 40-position configuration, requiring design verification for position count compatibility.

Parameter Comparison

Engineering Selection Recommendations

TSW-131-07-S-S (Primary Selection): The TSW-131-07-S-S maintains active product status with ROHS3 compliance and full inventory availability. This part is recommended for new designs and applications requiring long-term supply chain stability. The ROHS3 compliance status ensures regulatory alignment for consumer and industrial applications.

4-103185-0 (Conditional Substitution): The 4-103185-0 is classified as Obsolete and carries non-applicable RoHS status, indicating this part is no longer actively manufactured or supported. Substitution with this part is limited to legacy system maintenance or applications where design modifications to accommodate the 40-position configuration are feasible. The lower maximum operating temperature (105°C versus 125°C) and reduced gold plating thickness (15.0µin versus 30.0µin) represent functional deviations requiring design review. The Tin-Lead post finish on the substitute part may present compatibility concerns in lead-free assembly environments.

Frequently Asked Questions (FAQ)

Q: Can the 4-103185-0 directly replace the TSW-131-07-S-S in existing designs?

A: Direct replacement is not recommended. The 4-103185-0 features 40 positions versus 31 positions on the main part, requiring PCB layout modifications. Additionally, the obsolete status and non-compliant RoHS classification present supply chain and regulatory risks.

Q: What are the critical mechanical compatibility factors?

A: The 0.100" (2.54mm) pitch, single-row configuration, through-hole mounting, and solder termination must remain constant for mechanical interchangeability. Both parts share these specifications, but the position count difference necessitates design verification.

Q: How do the contact finish specifications affect performance?

A: The TSW-131-07-S-S provides 30.0µin gold plating on mating contacts, offering superior corrosion resistance and signal integrity compared to the 4-103185-0 at 15.0µin. The tin-plated posts on the main part versus tin-lead on the substitute reflect different manufacturing standards and environmental compliance approaches.

Q: Are there temperature range limitations for substitution?

A: The TSW-131-07-S-S operates from -55°C to 125°C, while the 4-103185-0 operates from -65°C to 105°C. Applications requiring operation above 105°C cannot use the substitute part. The main part provides superior high-temperature performance.

Q: What compliance considerations apply to substitution?

A: The TSW-131-07-S-S is ROHS3 compliant, suitable for regulated markets. The 4-103185-0 carries non-applicable RoHS status due to obsolescence, creating potential regulatory compliance gaps in new applications or markets with mandatory RoHS requirements.