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

Part Overview

The HTMS-104-03-S-S-RA is a rectangular connector header manufactured by Samtec Inc., designed for through-hole, right-angle board-to-board applications. This unshrouded header features 4 positions at 0.050" (1.27mm) pitch with male pin contacts and solder termination. The connector is actively produced and widely used in applications requiring reliable push-pull fastening with gold-plated mating contacts. Substitute parts are identified to provide alternative sourcing options when the primary part is unavailable or when inventory requirements necessitate alternative manufacturers.

Substiute Parts

HTMS-104-03-S-S-RA

Samtec Inc.In Stock: 777HTMS-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

Substitution eligibility for the HTMS-104-03-S-S-RA is determined by strict alignment of the following critical parameters:

• Connector Type: Header
• Contact Type: Male Pin
• Pitch - Mating: 0.050" (1.27mm)
• Number of Positions: 4
• Number of Rows: 1
• Mounting Type: Through Hole, Right Angle
• Termination: Solder
• Fastening Type: Push-Pull
• Contact Finish - Mating: Gold
• Material Flammability Rating: UL94 V-0
• RoHS Status: ROHS3 Compliant

The substitute part 5-104186-1 (TE Connectivity AMP Connectors) meets all mandatory substitution criteria. Both connectors share identical mating pitch, position count, mounting configuration, and termination method. Both are actively produced, RoHS3 compliant, and rated UL94 V-0. The connectors are functionally equivalent for board-to-board applications requiring 4-position 0.050" pitch headers with right-angle through-hole mounting and push-pull fastening.

Parameter Comparison

Engineering Selection Recommendations

Both the HTMS-104-03-S-S-RA and 5-104186-1 are actively produced connectors with ROHS3 compliance and UL94 V-0 flammability ratings. Selection between these parts should be based on:

• Inventory availability and lead time requirements
• Packaging format preference (Bulk vs. Tube)
• Operating temperature range requirements: HTMS-104-03-S-S-RA supports -55°C to 125°C; 5-104186-1 supports -65°C to 105°C
• Contact post length specifications: HTMS-104-03-S-S-RA provides 0.140" (4.66mm); 5-104186-1 provides 0.100" (2.54mm)
• Insulation material requirements: HTMS-104-03-S-S-RA uses LCP; 5-104186-1 uses Thermoplastic
• Contact geometry: HTMS-104-03-S-S-RA features square contacts; 5-104186-1 features circular contacts

Both connectors meet the core functional requirements for 4-position 0.050" pitch board-to-board applications with right-angle through-hole mounting and push-pull fastening.

Frequently Asked Questions (FAQ)

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

A: Yes, for applications where the operating temperature range of -65°C to 105°C is acceptable and the contact post length of 0.100" (2.54mm) is compatible with the PCB design. Both connectors share identical mating pitch (0.050"), position count (4), mounting type (through-hole right-angle), and termination method (solder). Verify that the insulation height difference (0.096" vs. 0.116") and contact post length do not conflict with board layout constraints.

Q: What are the key differences between these two connectors?

A: The primary differences are contact post length (0.140" vs. 0.100"), insulation height (0.096" vs. 0.116"), insulation material (LCP vs. Thermoplastic), contact shape (square vs. circular), and operating temperature range (-55°C to 125°C vs. -65°C to 105°C). The HTMS-104-03-S-S-RA provides a higher maximum operating temperature and longer contact posts, while the 5-104186-1 supports a lower minimum temperature.

Q: Are both connectors RoHS compliant?

A: Yes, both the HTMS-104-03-S-S-RA and 5-104186-1 are ROHS3 compliant with Moisture Sensitivity Level 1 (Unlimited).

Q: What is the difference in packaging between these parts?

A: The HTMS-104-03-S-S-RA is supplied in Bulk packaging, while the 5-104186-1 is supplied in Tube packaging. Packaging format may affect handling, storage, and integration into assembly processes.

Q: Do both connectors have the same current rating?

A: The HTMS-104-03-S-S-RA is rated for 5A per contact. The current rating for 5-104186-1 is not specified in the available data. Verify current requirements with the application specifications and TE Connectivity documentation if current capacity is a critical design parameter.