TSW-129-14-L-S Equivalent & Substitute Parts

Part Overview

The TSW-129-14-L-S is a rectangular connector header manufactured by Samtec Inc., designed for through-hole mounting applications. This 29-position, single-row header operates at 0.100" (2.54mm) pitch and is rated for operating temperatures from -55°C to 125°C. The connector features gold-plated mating contacts and tin-plated posts with phosphor bronze contact material. The product maintains Active status and is RoHS3 compliant with MSL 1 rating. Substitute parts are identified when equivalent electrical and mechanical parameters align with application requirements, particularly when position count flexibility and thermal operating ranges permit alternative selection.

Substiute Parts

TSW-129-14-L-S

Samtec Inc.In Stock: 1000TSW-129-14-L-S Datasheet

Current PartRFQ

9-146274-0

TE Connectivity AMP ConnectorsIn Stock: 12909-146274-0 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TSW-129-14-L-S is determined by the following critical parameters:

• Pitch - Mating: 0.100" (2.54mm) — must match exactly for PCB footprint compatibility
• Contact Type: Male Pin — electrical interface requirement
• Mounting Type: Through Hole — assembly process compatibility
• Termination: Solder — connection method
• Number of Rows: 1 — board layout constraint
• Material Flammability Rating: UL94 V-0 — safety compliance requirement

The substitute part 9-146274-0 (TE Connectivity AMP Connectors) shares the same pitch, contact type, mounting method, termination, and row configuration. However, it differs in position count (40 vs. 29), operating temperature range (-65°C ~ 105°C vs. -55°C ~ 125°C), contact finish specifications, and insulation material composition. Substitution is valid when application requirements permit the higher position count and the narrower upper temperature limit does not conflict with system thermal specifications.

Parameter Comparison

Engineering Selection Recommendations

Selection between the TSW-129-14-L-S and 9-146274-0 depends on specific application constraints:

TSW-129-14-L-S is the primary choice when:

• Operating temperature range extends to 125°C or below -55°C
• Exactly 29 positions are required
• Gold-plated mating contacts are specified for enhanced corrosion resistance
• Phosphor bronze contact material is required

9-146274-0 is suitable when:

• Operating temperature remains within -65°C to 105°C
• 40 positions accommodate the application or provide design flexibility
• Tin-plated mating contacts meet application requirements
• Copper alloy contact material is acceptable
• Breakaway connector functionality is beneficial

Both parts maintain Active product status, UL94 V-0 flammability compliance, MSL 1 rating, and EAR99 export classification. RoHS compliance is confirmed for both variants.

Frequently Asked Questions (FAQ)

Q: Can 9-146274-0 be used as a direct replacement for TSW-129-14-L-S?

A: Direct replacement is not applicable due to position count difference (40 vs. 29). The substitute is compatible only when the application design accommodates 40 positions and the narrower operating temperature range (-65°C to 105°C) does not conflict with system requirements.

Q: What is the impact of the different contact finishes?

A: TSW-129-14-L-S features gold-plated mating contacts, providing superior corrosion resistance and lower contact resistance. The 9-146274-0 uses tin-plated mating contacts. Selection depends on environmental exposure and electrical performance requirements.

Q: Are the insulation materials interchangeable?

A: TSW-129-14-L-S uses PBT insulation, while 9-146274-0 uses LCP. Both materials are UL94 V-0 rated and MSL 1 classified. LCP offers superior dimensional stability and higher temperature capability, though the operating temperature ceiling of 9-146274-0 is 105°C.

Q: Do the contact post lengths differ significantly?

A: Yes. TSW-129-14-L-S has 0.110" (2.79mm) post length, while 9-146274-0 has 0.125" (3.18mm). This difference may affect PCB trace routing and component placement in high-density layouts.

Q: Are both parts RoHS compliant?

A: Yes. TSW-129-14-L-S is ROHS3 compliant, and 9-146274-0 is RoHS compliant. Both meet regulatory requirements for restricted substance elimination.

Q: What is the significance of the breakaway feature on 9-146274-0?

A: The breakaway feature allows individual connector positions to be separated from the main header assembly. This functionality is not present on TSW-129-14-L-S and may provide design flexibility for modular applications.