TSW-124-07-L-D Equivalent & Substitute Parts

Part Overview

The TSW-124-07-L-D is a rectangular connector header manufactured by Samtec Inc., designed for through-hole mounting applications. This connector features 48 positions arranged in 2 rows with 0.100" (2.54mm) pitch spacing, suitable for board-to-board or cable interconnections. The part is currently in active production status with 818 units in stock.

Substitute parts become necessary when the original component reaches end-of-life status, when inventory constraints occur, or when design requirements necessitate alternative connector configurations with compatible electrical and mechanical parameters.

Substiute Parts

TSW-124-07-L-D

Samtec Inc.In Stock: 886TSW-124-07-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-124-07-L-D is determined by the following critical parameters:

Mandatory Matching Parameters:

• Pitch - Mating: 0.100" (2.54mm)
• Number of Rows: 2
• Row Spacing - Mating: 0.100" (2.54mm)
• Connector Type: Header
• Contact Type: Male Pin
• Mounting Type: Through Hole
• Termination: Solder
• Contact Finish - Mating: Gold

Flexible Parameters (Position Count):

• Number of Positions: May vary based on application requirements

The substitute part 4-103186-0 (TE Connectivity AMP Connectors) shares the core electrical and mechanical interface characteristics with the TSW-124-07-L-D. Both connectors maintain identical mating pitch, row configuration, and contact geometry, enabling mechanical and electrical compatibility in applications where the position count difference is accommodated by the circuit design.

Parameter Comparison

Engineering Selection Recommendations

TSW-124-07-L-D (Primary Selection): The TSW-124-07-L-D remains the preferred component for new designs and ongoing production. This connector is in active production status, maintains ROHS3 compliance, and operates across a wider temperature range (-55°C to 125°C). The part is readily available with 818 units in current inventory.

4-103186-0 (Substitute - Limited Application): The 4-103186-0 is classified as obsolete and does not meet ROHS3 compliance requirements. This substitute is suitable only for legacy system maintenance or applications where RoHS compliance is not mandated. The substitute exhibits a narrower operating temperature range (-65°C to 105°C) and uses tin-lead post finish, which may present compatibility concerns in modern manufacturing environments. Selection of this substitute requires explicit engineering justification and should be limited to non-compliant legacy applications.

Frequently Asked Questions (FAQ)

Q: Can the 4-103186-0 be used as a direct replacement for the TSW-124-07-L-D in new designs?

A: No. The 4-103186-0 is obsolete and RoHS non-compliant, making it unsuitable for new product designs. The TSW-124-07-L-D is the appropriate selection for active development.

Q: What are the key mechanical compatibility factors between these connectors?

A: Both connectors share identical mating pitch (0.100"), row spacing (0.100"), and contact geometry (square male pins with gold mating finish). The primary difference is position count: 48 positions for the TSW-124-07-L-D versus 80 positions for the 4-103186-0. Mechanical compatibility exists when the circuit design accommodates the position count difference.

Q: Are there temperature rating differences that affect substitution?

A: Yes. The TSW-124-07-L-D operates from -55°C to 125°C, while the 4-103186-0 operates from -65°C to 105°C. Applications requiring operation above 105°C must use the TSW-124-07-L-D.

Q: What is the significance of the contact finish differences?

A: The TSW-124-07-L-D uses tin post finish, while the 4-103186-0 uses tin-lead post finish. Tin-lead finishes are restricted in RoHS3 compliant applications. This difference reinforces that the 4-103186-0 is suitable only for legacy, non-compliant systems.

Q: How do the insulation height differences impact compatibility?

A: The TSW-124-07-L-D has 0.100" insulation height versus 0.090" for the 4-103186-0. This 0.010" difference may affect board layout spacing and mating connector alignment. Verification of PCB footprint compatibility is required before substitution.

Q: What inventory considerations apply to these parts?

A: The TSW-124-07-L-D has 818 units in stock, while the 4-103186-0 has 126,300 units available. However, the obsolete status of the 4-103186-0 means future availability cannot be guaranteed, making it an unreliable long-term supply source.