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

Part Overview

The HTMS-104-03-G-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 stocked, with 802 units available in inventory. Alternative equivalent parts may be required due to supply constraints, packaging preferences, or specific application requirements.

Substiute Parts

HTMS-104-03-G-S-RA

Samtec Inc.In Stock: 822HTMS-104-03-G-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-G-S-RA is determined by the following critical parameters:

• Pitch - Mating: 0.050" (1.27mm) — must match exactly for mechanical compatibility
• Number of Positions: 4 — must match for circuit board layout compatibility
• Number of Rows: 1 — must match for footprint compatibility
• Connector Type: Header — must be header type for board-to-board connection
• Contact Type: Male Pin — must be male pin for mating with female receptacles
• Mounting Type: Through Hole, Right Angle — must match for PCB assembly orientation
• Termination: Solder — must be solder termination for permanent board attachment
• Fastening Type: Push-Pull — must match for connector engagement mechanism
• Shrouding: Unshrouded — must be unshrouded for space-constrained applications
• RoHS Status: ROHS3 Compliant — must meet regulatory compliance requirements

The substitute part 5-104186-1 (TE Connectivity AMP Connectors) meets all critical substitution criteria and is therefore classified as an equivalent part.

Parameter Comparison

Engineering Selection Recommendations

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

• Packaging format: HTMS-104-03-G-S-RA is supplied in bulk packaging, while 5-104186-1 is supplied in tube packaging
• Inventory availability: 5-104186-1 has higher current stock (1460 units versus 802 units)
• Insulation material: HTMS-104-03-G-S-RA uses Liquid Crystal Polymer (LCP), while 5-104186-1 uses thermoplastic
• Contact material: HTMS-104-03-G-S-RA uses phosphor bronze, while 5-104186-1 uses copper alloy
• Operating temperature range: HTMS-104-03-G-S-RA operates -55°C to 125°C, while 5-104186-1 operates -65°C to 105°C

Both parts meet the core electrical and mechanical requirements for direct substitution in board-to-board header applications.

Frequently Asked Questions (FAQ)

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

A: Yes. Both connectors share identical pitch (0.050"), position count (4), row configuration (1), mounting type (through-hole right-angle), termination method (solder), and fastening mechanism (push-pull). Both are unshrouded, ROHS3 compliant, and rated UL94 V-0.

Q: What are the differences between these two parts?

A: The primary differences are packaging format (bulk versus tube), insulation material (LCP versus thermoplastic), contact material (phosphor bronze versus copper alloy), and operating temperature ranges. The HTMS-104-03-G-S-RA supports a wider high-temperature range (-55°C to 125°C), while 5-104186-1 supports a lower minimum temperature (-65°C).

Q: Are there any compatibility concerns when substituting these parts?

A: No compatibility concerns exist for the specified parameters. Both connectors are designed for board-to-board applications with identical mating pitch and position configuration. PCB footprints and mating receptacles designed for one part will accommodate the other.

Q: Which part should be selected for high-temperature applications?

A: The HTMS-104-03-G-S-RA is rated to 125°C maximum operating temperature, compared to 105°C for 5-104186-1. For applications requiring sustained operation above 105°C, the HTMS-104-03-G-S-RA is the appropriate selection.

Q: What is the significance of the packaging difference?

A: HTMS-104-03-G-S-RA is supplied in bulk packaging, suitable for high-volume manufacturing environments. 5-104186-1 is supplied in tube packaging, which may be preferred for smaller production runs or inventory management systems that utilize tube-based component handling.