TSW-131-07-S-D Equivalent & Substitute Parts

Part Overview

The TSW-131-07-S-D is a rectangular connector header manufactured by Samtec Inc., designed for through-hole board-to-board or cable applications. This 62-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-131-07-S-D

Samtec Inc.In Stock: 1090TSW-131-07-S-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-131-07-S-D is determined by the following critical parameters:

Primary Compatibility Criteria:

• Pitch - Mating: 0.100" (2.54mm) — must match exactly
• Contact Type: Male Pin
• Mounting Type: Through Hole
• Termination: Solder
• Number of Rows: 2

Secondary Compatibility Criteria:

• Number of Positions: 62 positions (exact match preferred; higher position counts may be acceptable if mechanical footprint permits)
• Connector Style: Board to Board or Cable
• Contact Shape: Square
• Insulation Material: Polybutylene Terephthalate (PBT) or equivalent thermoplastic

Compliance Considerations:

• Operating Temperature Range: Minimum -55°C to 125°C coverage required
• Material Flammability: UL94 V-0 rating required
• RoHS Status: ROHS3 Compliant preferred for new designs

The substitute part 4-103186-0 (TE Connectivity AMP Connectors) shares the core mating pitch, contact type, mounting method, and termination approach. However, it presents specific parameter deviations that must be evaluated for application compatibility.

Parameter Comparison

Engineering Selection Recommendations

Primary Part (TSW-131-07-S-D): The TSW-131-07-S-D remains the preferred selection for new designs and production applications. It maintains Active product status, full ROHS3 compliance, and operates across the extended temperature range of -55°C to 125°C. The part is currently in stock with 1023 units available.

Substitute Part (4-103186-0): The 4-103186-0 is classified as Obsolete and presents multiple parameter deviations that require careful evaluation:

• Position Count Mismatch: The substitute provides 80 positions versus the required 62 positions. This increases the connector footprint and may not fit existing PCB layouts designed for the 62-position configuration.
• Temperature Range Limitation: The substitute's maximum operating temperature is 105°C, which is 20°C below the primary part's 125°C rating. Applications requiring the full -55°C to 125°C range cannot use this substitute.
• RoHS Compliance: The substitute is RoHS non-compliant due to tin-lead post finish. This disqualifies it for applications subject to RoHS regulations or customer requirements.
• Contact Finish Thickness: The substitute's mating contact gold plating is half the thickness (15.0µin versus 30.0µin), potentially affecting long-term contact reliability in high-cycle mating applications.
• Post Length Variation: The substitute's post is 0.020" longer, which may cause clearance issues on PCBs designed for the primary part's dimensions.

Substitution Feasibility: The 4-103186-0 is suitable only for legacy system maintenance or repair applications where the original connector is no longer available and the design constraints permit the noted parameter deviations. New designs should not adopt this substitute.

Frequently Asked Questions (FAQ)

Q: Can the 4-103186-0 be used as a direct replacement for the TSW-131-07-S-D?

A: No. While both connectors share the same 0.100" (2.54mm) mating pitch and 2-row configuration, the 4-103186-0 has 80 positions instead of 62, operates at a lower maximum temperature (105°C versus 125°C), and is RoHS non-compliant. Direct substitution is not recommended for new designs.

Q: What is the primary reason the 4-103186-0 cannot be used in RoHS-regulated applications?

A: The 4-103186-0 uses tin-lead plating on the post termination, which contains lead and violates RoHS3 requirements. The TSW-131-07-S-D uses tin plating and is fully RoHS3 compliant.

Q: Does the 80-position configuration of the 4-103186-0 create compatibility issues?

A: Yes. The increased position count results in a larger connector footprint. PCBs designed for the 62-position TSW-131-07-S-D may not accommodate the 80-position substitute without layout modifications. Additionally, unused positions represent unnecessary cost and board space.

Q: How does the contact post length difference affect compatibility?

A: The 4-103186-0 post is 0.020" (0.51mm) longer than the TSW-131-07-S-D. This dimensional variance may cause clearance conflicts with components or traces on PCBs designed for the primary part's specifications.

Q: What is the significance of the reduced gold plating thickness on the substitute?

A: The 4-103186-0 mating contact has 15.0µin gold plating compared to 30.0µin on the TSW-131-07-S-D. Thinner plating may reduce contact durability in applications requiring frequent mating cycles or harsh environmental exposure.

Q: Can the 4-103186-0 be used in applications requiring operation at 125°C?

A: No. The 4-103186-0 is rated only to 105°C maximum. Applications requiring the full -55°C to 125°C operating range must use the TSW-131-07-S-D or identify an alternative part with equivalent temperature specifications.

Q: Why is the 4-103186-0 listed as Obsolete?

A: Obsolete status indicates the part is no longer manufactured or supported by TE Connectivity. Existing inventory may be available through authorized distributors, but long-term supply cannot be guaranteed. New designs should not depend on obsolete components.

Q: Are there any advantages to using the 4-103186-0 over the TSW-131-07-S-D?

A: The 4-103186-0 offers a breakaway connector feature and specifies a 3A current rating. However, these features do not offset the compliance, temperature, and dimensional limitations for most applications.