HTMS-104-02-S-S-RA Equivalent & Substitute Parts

Part Overview

The HTMS-104-02-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 stocked, with 959 units available in inventory. Substitute parts are identified when equivalent electrical and mechanical parameters align with the core specifications, enabling component interchangeability in applications where the original part may be unavailable or where alternative packaging or sourcing is preferred.

Substiute Parts

HTMS-104-02-S-S-RA

Samtec Inc.In Stock: 1037HTMS-104-02-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

The substitute part 5-104186-1 (TE Connectivity AMP Connectors) qualifies as an equivalent based on the following critical parameters:

• Connector type, contact type, and gender (Header, Male Pin)
• Mating pitch (0.050" / 1.27mm)
• Number of positions and rows (4 positions, 1 row)
• Mounting configuration (Through Hole, Right Angle)
• Termination method (Solder)
• Fastening mechanism (Push-Pull)
• Contact finish on mating surface (Gold)
• Flammability rating (UL94 V-0)
• RoHS3 compliance and MSL 1 rating

Variations exist in contact geometry (square vs. circular), insulation material composition (LCP vs. thermoplastic), contact dimensions, and operating temperature range. These differences do not preclude substitution when the application requirements fall within the overlapping specifications of both parts.

Parameter Comparison

Engineering Selection Recommendations

Both the HTMS-104-02-S-S-RA and 5-104186-1 are active products with ROHS3 compliance and UL94 V-0 flammability certification. Selection between these parts should be based on the following factors:

The HTMS-104-02-S-S-RA offers a higher maximum operating temperature of 125°C compared to the 5-104186-1 at 105°C. Applications requiring sustained operation above 105°C necessitate the Samtec part. The HTMS-104-02-S-S-RA specifies a 5A per-contact current rating, while the TE Connectivity part does not provide this specification but does specify 30VAC voltage rating.

Contact geometry differs: the HTMS-104-02-S-S-RA uses square contacts while the 5-104186-1 uses circular contacts. Insulation material composition also varies (LCP vs. thermoplastic), which may affect mechanical properties and environmental resistance in specific applications.

Packaging format differs (Bulk vs. Tube), which may influence procurement and handling procedures. The TE Connectivity part currently shows higher inventory availability (1460 units vs. 959 units).

Frequently Asked Questions (FAQ)

Q: Can the 5-104186-1 be used as a direct replacement for the HTMS-104-02-S-S-RA?

A: Substitution is possible when application requirements fall within the overlapping specifications. The critical matching parameters are pitch (0.050"), position count (4), mounting type (through-hole right-angle), and termination method (solder). However, verify that your application does not require the higher temperature range (-55°C to 125°C) of the HTMS part, as the TE Connectivity substitute is rated only to 105°C maximum.

Q: What are the key differences in contact design between these two parts?

A: The HTMS-104-02-S-S-RA features square contacts made from phosphor bronze, while the 5-104186-1 uses circular contacts made from copper alloy. The mating contact lengths also differ (0.100" vs. 0.125"), and post lengths differ (0.140" vs. 0.100"). These geometric variations may affect insertion force, contact pressure, and mechanical fit within mating receptacles.

Q: Are both parts suitable for the same environmental conditions?

A: Both parts share UL94 V-0 flammability rating, ROHS3 compliance, and MSL 1 moisture sensitivity level. However, operating temperature ranges differ: the HTMS part operates from -55°C to 125°C, while the TE Connectivity part operates from -65°C to 105°C. Select based on your specific temperature requirements.

Q: Does packaging format affect electrical performance?

A: No. The Bulk packaging of the HTMS part and Tube packaging of the TE Connectivity part do not affect electrical or mechanical performance. Packaging selection is a procurement and handling consideration only.

Q: What current and voltage ratings apply to each part?

A: The HTMS-104-02-S-S-RA specifies 5A per contact with no voltage rating provided. The 5-104186-1 specifies 30VAC with no current rating provided. Verify that your application requirements align with the available specifications for your selected part.