TSW-123-07-L-D Equivalent & Substitute Parts

Part Overview

The TSW-123-07-L-D is a rectangular connector header manufactured by Samtec Inc., designed for through-hole board-to-board or cable applications. This 46-position, 2-row connector operates across a wide temperature range of -55°C to 125°C and features gold-plated mating contacts with tin-plated posts. The part maintains active product status with ROHS3 compliance and unlimited moisture sensitivity rating.

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

Substiute Parts

TSW-123-07-L-D

Samtec Inc.In Stock: 1181TSW-123-07-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-123-07-L-D is determined by the following critical parameters:

• Pitch - Mating: 0.100" (2.54mm) — must match exactly for mechanical compatibility
• Contact Type: Male Pin — determines mating interface
• Mounting Type: Through Hole — establishes PCB assembly method
• Termination: Solder — defines connection mechanism
• Number of Rows: 2 — establishes physical layout
• Material Flammability Rating: UL94 V-0 — ensures safety compliance

The substitute part 4-103186-0 shares these core parameters with the TSW-123-07-L-D. However, differences exist in position count (80 vs. 46), operating temperature range, RoHS compliance status, and product lifecycle stage. These differences must be evaluated against specific application requirements.

Parameter Comparison

Engineering Selection Recommendations

The TSW-123-07-L-D is the preferred component for new designs due to its active product status and ROHS3 compliance. This ensures long-term availability and regulatory alignment with current environmental standards.

The substitute part 4-103186-0 carries obsolete product status and RoHS non-compliance, making it unsuitable for new applications or designs requiring regulatory compliance. The higher position count (80 vs. 46) introduces mechanical incompatibility unless the application specifically requires additional contact positions.

Key differences affecting selection:

• Operating temperature range: The main part supports -55°C to 125°C, while the substitute supports -65°C to 105°C. Applications requiring the full upper temperature range of 125°C cannot use the substitute.
• RoHS compliance: The main part meets ROHS3 requirements; the substitute does not.
• Product lifecycle: Active status ensures continued availability and support; obsolete status indicates end-of-life.
• Contact post length: The substitute has a 0.020" (0.51mm) longer post, which may affect PCB layout compatibility.

Frequently Asked Questions (FAQ)

Q: Can 4-103186-0 be used as a direct replacement for TSW-123-07-L-D?

A: No. While both connectors share the same 0.100" (2.54mm) pitch and 2-row configuration, the substitute has 80 positions compared to 46 positions in the main part. This difference requires PCB redesign and is not a direct substitution.

Q: What are the critical parameters that determine substitution compatibility?

A: Mating pitch (0.100" / 2.54mm), contact type (Male Pin), number of rows (2), row spacing (0.100" / 2.54mm), mounting type (Through Hole), and termination method (Solder) must remain constant for mechanical and electrical compatibility.

Q: Why is the main part preferred over the substitute?

A: The TSW-123-07-L-D maintains active product status, ROHS3 compliance, and a wider operating temperature range (up to 125°C). The substitute is obsolete and RoHS non-compliant, limiting its use in new designs and regulated applications.

Q: Does the difference in contact post length affect compatibility?

A: Yes. The substitute's 0.120" (3.05mm) post length versus the main part's 0.100" (2.54mm) post length creates a 0.020" (0.51mm) difference. This affects solder joint depth and PCB hole sizing, requiring design verification.

Q: Are there temperature limitations when considering the substitute?

A: Yes. The substitute operates from -65°C to 105°C, while the main part operates from -55°C to 125°C. Applications requiring operation above 105°C cannot use the substitute.

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

A: ROHS3 compliance is mandatory for products sold in the European Union and many other regulated markets. The non-compliant substitute cannot be used in applications subject to these regulations.