TSW-133-07-L-S Equivalent & Substitute Parts

Part Overview

The TSW-133-07-L-S is a rectangular connector header manufactured by Samtec Inc., designed for through-hole mounting applications. This 33-position, single-row header operates at 0.100" (2.54mm) pitch and is classified as an active product. The connector features unshrouded design with solder termination and push-pull fastening, suitable for board-to-board or cable interconnection in industrial and commercial applications.

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 characteristics.

Substiute Parts

TSW-133-07-L-S

Samtec Inc.In Stock: 739TSW-133-07-L-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-133-07-L-S is determined by the following critical parameters:

• Pitch - Mating: 0.100" (2.54mm) — must match exactly for PCB footprint compatibility
• Connector Type: Header with male pin contact type
• Mounting Type: Through Hole
• Termination: Solder
• Fastening Type: Push-Pull
• Contact Finish - Mating: Gold plating for signal integrity
• Insulation Material: Thermoplastic or PBT for mechanical stability
• Operating Temperature Range: Must encompass or exceed -55°C ~ 125°C
• Material Flammability Rating: UL94 V-0 compliance required

The substitute part 4-103185-0 (TE Connectivity AMP Connectors) shares the core electrical and mechanical characteristics necessary for functional equivalence, though position count differs (40 vs. 33 positions). This difference permits substitution in applications where the additional positions can be accommodated or left unloaded.

Parameter Comparison

Engineering Selection Recommendations

The TSW-133-07-L-S remains the preferred selection for new designs due to its active product status and ROHS3 compliance certification. This connector is suitable for applications requiring the specified 33-position configuration within the -55°C ~ 125°C operating range.

The 4-103185-0 substitute is classified as obsolete and carries undefined RoHS compliance status. Selection of this part is limited to legacy system maintenance or applications where inventory availability supersedes compliance requirements. The substitute's maximum operating temperature of 105°C is 20°C lower than the primary part, which may restrict use in high-temperature environments. The additional 7 positions (40 vs. 33) require PCB layout accommodation or intentional non-loading of unused contacts.

For new production designs, the TSW-133-07-L-S is the appropriate choice. For legacy system support where the primary part is unavailable, the 4-103185-0 may serve as a functional equivalent provided that the reduced temperature rating and obsolete status are acceptable within the application context.

Frequently Asked Questions (FAQ)

Q: Can the 4-103185-0 be used as a direct replacement for the TSW-133-07-L-S?

A: Functional substitution is possible due to matching pitch (0.100"), connector type (header), contact type (male pin), mounting method (through-hole), and termination (solder). However, the 40-position configuration requires PCB layout verification to confirm that the additional 7 positions do not create mechanical conflicts. The reduced maximum operating temperature (105°C vs. 125°C) must be evaluated against application requirements.

Q: What are the key differences between these connectors?

A: The primary differences are position count (33 vs. 40), operating temperature upper limit (125°C vs. 105°C), product status (active vs. obsolete), and RoHS compliance documentation (ROHS3 vs. not applicable). Contact material differs (phosphor bronze vs. copper alloy), and gold plating thickness is greater on the substitute (15.0µin vs. 10.0µin).

Q: Are the PCB footprints identical?

A: The pitch spacing (0.100" / 2.54mm) is identical, ensuring compatible row-to-row alignment. However, the substitute has 7 additional positions, requiring verification that the extended connector length does not exceed available PCB space or create interference with adjacent components.

Q: Which part should be selected for new product development?

A: The TSW-133-07-L-S is the appropriate selection for new designs. It maintains active product status, ROHS3 compliance, and the full -55°C ~ 125°C operating range. The 4-103185-0 is obsolete and should be reserved for legacy system support only.

Q: What is the impact of the temperature rating difference?

A: The TSW-133-07-L-S supports operation up to 125°C, while the 4-103185-0 is rated to 105°C maximum. Applications requiring sustained operation above 105°C must use the primary part. The lower rating on the substitute may reflect material or design limitations specific to the AMPMODU Mod II series.

Q: Can unused positions on the 40-position connector be left unloaded?

A: Yes. The 4-103185-0 is specified with all positions loaded, but mechanical design permits selective contact installation. Unused positions may remain empty provided that the connector housing structure remains intact and does not compromise mating interface integrity.