TSW-128-14-S-D Equivalent & Substitute Parts

Part Overview

The TSW-128-14-S-D is a rectangular connector header manufactured by Samtec Inc., designed for through-hole board-to-board or cable applications. This 56-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 full 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-128-14-S-D

Samtec Inc.In Stock: 899TSW-128-14-S-D Datasheet

Current PartRFQ

4-102973-0

TE Connectivity AMP ConnectorsIn Stock: 18614-102973-0 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TSW-128-14-S-D is determined by the following critical parameters:

Primary Compatibility Criteria:

• 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

Secondary Compatibility Criteria:

• Contact Finish - Mating: Gold
• Contact Finish - Post: Tin or equivalent
• Insulation Material: PBT or thermoplastic equivalent
• Operating Temperature Range: Must encompass or match -55°C ~ 125°C
• Material Flammability Rating: UL94 V-0

The substitute part 4-102973-0 (TE Connectivity AMP Connectors AMPMODU Mod II series) shares the same mating pitch, row configuration, and fundamental connector architecture. However, it features 80 positions rather than 56, indicating it is a higher-capacity variant within the same connector family. This part maintains compatibility with the core electrical and mechanical interface specifications while offering expanded position capacity.

Parameter Comparison

Engineering Selection Recommendations

TSW-128-14-S-D (Primary Selection): The TSW-128-14-S-D remains the preferred choice for new designs and applications requiring active product support. This part maintains full RoHS3 compliance, operates across the extended temperature range of -55°C to 125°C, and features higher gold plating thickness (30.0µin) on mating contacts, providing enhanced durability and contact reliability. Active product status ensures continued availability and manufacturing consistency.

4-102973-0 (Substitute Consideration): The 4-102973-0 is classified as Obsolete and carries RoHS non-compliance status due to tin-lead post plating. The operating temperature range (-65°C ~ 105°C) does not fully encompass the primary part's upper temperature limit of 125°C. This substitute is suitable only for legacy system maintenance or applications where the temperature ceiling of 105°C is acceptable and RoHS compliance is not mandated. The higher position count (80 vs. 56) requires design accommodation and is not a direct pin-for-pin replacement.

Frequently Asked Questions (FAQ)

Q: Can the 4-102973-0 be used as a direct replacement for the TSW-128-14-S-D?

A: No. While both connectors share the same 0.100" (2.54mm) mating pitch and 2-row configuration, the 4-102973-0 provides 80 positions compared to 56 positions in the TSW-128-14-S-D. This difference requires PCB layout modification and is not a pin-for-pin substitute. Additionally, the 4-102973-0 is Obsolete and RoHS non-compliant.

Q: What are the key electrical compatibility factors?

A: Both connectors feature gold-plated mating contacts and tin-based post plating, supporting equivalent signal integrity. The TSW-128-14-S-D specifies phosphor bronze contact material while the 4-102973-0 uses copper alloy. Both maintain UL94 V-0 flammability ratings and unlimited moisture sensitivity (MSL 1).

Q: Are there temperature range limitations with the substitute?

A: Yes. The 4-102973-0 operates from -65°C to 105°C, which does not reach the TSW-128-14-S-D's upper limit of 125°C. Applications requiring operation above 105°C must use the primary part.

Q: What is the impact of RoHS compliance differences?

A: The TSW-128-14-S-D is ROHS3 compliant, meeting current regulatory requirements for restricted substances. The 4-102973-0 is RoHS non-compliant due to tin-lead post plating. Applications subject to RoHS mandates must use the primary part.

Q: How do the contact finishes compare?

A: The TSW-128-14-S-D provides 30.0µin (0.76µm) gold plating on mating contacts, while the 4-102973-0 provides 15.0µin (0.38µm). The thicker plating on the primary part offers superior wear resistance and contact longevity in high-cycle mating applications.

Q: Can the substitute be used in legacy system repairs?

A: The 4-102973-0 may be considered for legacy system maintenance where the operating temperature does not exceed 105°C and RoHS compliance is not required. Inventory availability should be verified, as this part is Obsolete.