TMS-104-03-S-S-RA Equivalent & Substitute Parts

Part Overview

The TMS-104-03-S-S-RA is a 0.050" (1.27mm) pitch micro header connector manufactured by Samtec Inc. This through-hole, right-angle header is designed for board-to-board applications with 4 positions in a single row configuration. The connector features unshrouded design, solder termination, and push-pull fastening. As an active product with full inventory availability (851 pcs), this component serves general-purpose interconnection requirements in electronic assemblies. Equivalent substitute parts are identified to provide procurement flexibility, alternative sourcing options, and inventory management alternatives when the primary part becomes unavailable or when design requirements permit functional equivalents.

Substiute Parts

TMS-104-03-S-S-RA

Samtec Inc.In Stock: 943TMS-104-03-S-S-RA Datasheet

Current PartRFQ

5-104186-1

TE Connectivity AMP ConnectorsIn Stock: 15005-104186-1 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the TMS-104-03-S-S-RA are identified based on strict equivalence of critical electrical and mechanical parameters. The following parameters define substitution eligibility:

Primary Matching Criteria:

• Pitch - Mating: 0.050" (1.27mm)
• Number of Positions: 4
• Number of Rows: 1
• Connector Type: Header
• Contact Type: Male Pin
• Mounting Type: Through Hole, Right Angle
• Termination: Solder
• Fastening Type: Push-Pull

Secondary Compatibility Parameters:

• Shrouding: Unshrouded
• Style: Board to Board or Board to Board/Cable
• Contact Finish - Mating: Gold
• Material Flammability Rating: UL94 V-0
• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level: 1 (Unlimited)

The substitute part 5-104186-1 (TE Connectivity AMP Connectors) meets all primary matching criteria and secondary compatibility parameters, establishing it as a functional equivalent for the TMS-104-03-S-S-RA in applications where the specified electrical and mechanical characteristics are required.

Parameter Comparison

Engineering Selection Recommendations

Both the TMS-104-03-S-S-RA and 5-104186-1 are active products with ROHS3 compliance and UL94 V-0 material flammability ratings. Selection between these parts should be based on the following engineering considerations:

TMS-104-03-S-S-RA (Samtec) is suitable when:

• Operating temperature range of -55°C to 125°C is required
• Phosphor bronze contact material is specified
• Liquid Crystal Polymer (LCP) insulation material is required
• Square contact geometry is preferred
• Current rating of 5A per contact is specified

5-104186-1 (TE Connectivity) is suitable when:

• Operating temperature range of -65°C to 105°C is acceptable
• Copper alloy contact material is acceptable
• Thermoplastic insulation material is acceptable
• Circular contact geometry is acceptable
• 30VAC voltage rating specification is required
• Higher inventory availability (1460 pcs) is advantageous for procurement

Both parts meet the core electrical and mechanical requirements for 0.050" (1.27mm) pitch, 4-position, through-hole, right-angle header applications with solder termination and push-pull fastening. The choice between them depends on specific application requirements regarding temperature range, contact material, insulation material, and contact geometry.

Frequently Asked Questions (FAQ)

Q: Can the 5-104186-1 be used as a direct replacement for the TMS-104-03-S-S-RA?

A: The 5-104186-1 is functionally equivalent for applications requiring 0.050" (1.27mm) pitch, 4-position, through-hole, right-angle header connectors with solder termination. However, differences exist in contact post length (0.100" vs 0.140"), insulation height (0.116" vs 0.098"), contact shape (circular vs square), and operating temperature range (-65°C to 105°C vs -55°C to 125°C). Verify that these differences are acceptable for your specific application before substitution.

Q: What are the critical parameters that define substitution eligibility?

A: Substitution eligibility is determined by matching pitch (0.050"), position count (4), row configuration (1), connector type (header), contact type (male pin), mounting type (through-hole right-angle), termination method (solder), and fastening type (push-pull). Additional compatibility is established through unshrouded shrouding, board-to-board style, gold mating contact finish, UL94 V-0 flammability rating, ROHS3 compliance, and MSL 1 moisture sensitivity level.

Q: Are there differences in packaging between these parts?

A: Yes. The TMS-104-03-S-S-RA is supplied in bulk packaging, while the 5-104186-1 is supplied in tube packaging. This difference affects handling, storage, and inventory management but does not impact electrical or mechanical compatibility.

Q: What is the difference in contact post length between these parts?

A: The TMS-104-03-S-S-RA has a contact post length of 0.140" (4.66mm), while the 5-104186-1 has a contact post length of 0.100" (2.54mm). This difference may affect PCB design considerations, particularly for through-hole depth and solder joint formation. Verify PCB design compatibility before substitution.

Q: Do both parts meet the same compliance standards?

A: Yes. Both the TMS-104-03-S-S-RA and 5-104186-1 are ROHS3 compliant, have UL94 V-0 material flammability ratings, and MSL 1 moisture sensitivity levels. Both are active products with unlimited shelf life under MSL 1 conditions.

Q: What is the difference in operating temperature range?

A: The TMS-104-03-S-S-RA operates from -55°C to 125°C, while the 5-104186-1 operates from -65°C to 105°C. If your application requires operation below -55°C or above 105°C, the TMS-104-03-S-S-RA is the appropriate choice. If your application operates within -55°C to 105°C, both parts are suitable.