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

Part Overview

The HTMS-104-02-S-S is a rectangular connector header manufactured by Samtec Inc., designed for through-hole board-to-board applications. This unshrouded header features 4 positions at 0.050" (1.27mm) pitch with gold-plated mating contacts and tin-plated posts. The connector is actively produced and widely used in applications requiring reliable push-pull fastening with solder termination. Substitute parts are identified to provide alternative sourcing options when the primary part is unavailable or when inventory requirements necessitate qualified alternatives.

Substiute Parts

HTMS-104-02-S-S

Samtec Inc.In Stock: 1091HTMS-104-02-S-S Datasheet

Current PartRFQ

5-104178-1

TE Connectivity AMP ConnectorsIn Stock: 11905-104178-1 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the HTMS-104-02-S-S with the TE Connectivity 5-104178-1 is based on the following critical parameters that must align for functional equivalence:

• Connector Type & Contact Type: Both are unshrouded male pin headers
• Position Count & Pitch: Both feature 4 positions at 0.050" (1.27mm) mating pitch
• Mounting & Termination: Both are through-hole solder-terminated connectors
• Fastening Mechanism: Both employ push-pull fastening
• Contact Finish: Both feature gold-plated mating contacts and tin-plated posts
• Insulation Color & Shape: Both have black insulation with square contact geometry
• Compliance: Both are RoHS compliant and rated UL94 V-0

The substitute part is qualified for equivalent board-to-board or cable applications with identical electrical and mechanical interface requirements.

Parameter Comparison

Engineering Selection Recommendations

Both the HTMS-104-02-S-S and 5-104178-1 are active production parts with equivalent electrical and mechanical specifications for standard board-to-board applications. Selection between these parts should be based on:

Product Availability: The 5-104178-1 currently maintains higher inventory (1178 pcs) compared to the HTMS-104-02-S-S (1001 pcs), making it suitable for high-volume procurement scenarios.

Compliance & Certification: Both parts meet RoHS compliance requirements and UL94 V-0 flammability standards, qualifying them for equivalent use in regulated applications.

Operating Temperature Considerations: The HTMS-104-02-S-S supports a wider upper temperature range (-55°C to 125°C) compared to the 5-104178-1 (-65°C to 105°C). Applications requiring sustained operation above 105°C should specify the Samtec part.

Contact Material Differences: The HTMS-104-02-S-S uses phosphor bronze contacts while the 5-104178-1 uses copper alloy contacts. Both materials provide equivalent electrical performance for the specified 5A per contact rating.

Insulation Material: The HTMS-104-02-S-S employs Liquid Crystal Polymer (LCP) insulation, while the 5-104178-1 uses thermoplastic insulation. Both materials meet UL94 V-0 requirements and are suitable for standard environmental conditions.

Frequently Asked Questions (FAQ)

Q: Can the 5-104178-1 be used as a direct replacement for the HTMS-104-02-S-S in existing designs?

A: Yes, for applications operating within the -65°C to 105°C temperature range. Both connectors share identical mating pitch (0.050"), position count (4), contact geometry (square male pins), and fastening mechanism (push-pull). The overall contact length (0.320") is identical, ensuring mechanical compatibility with mating receptacles.

Q: What is the significance of the contact length differences between these parts?

A: The HTMS-104-02-S-S has a 0.100" mating contact length and 0.120" post length, while the 5-104178-1 reverses these dimensions (0.120" mating, 0.100" post). The overall contact length remains 0.320" in both cases. This difference does not affect electrical performance or mating compatibility, as the total engagement depth is preserved.

Q: Are there any thermal limitations when substituting the 5-104178-1 for the HTMS-104-02-S-S?

A: The 5-104178-1 has a maximum operating temperature of 105°C, compared to 125°C for the HTMS-104-02-S-S. Applications requiring sustained operation above 105°C must use the Samtec part. For standard industrial and consumer applications operating below 105°C, both parts are thermally equivalent.

Q: Do packaging differences affect component handling or assembly?

A: The HTMS-104-02-S-S is supplied in bulk packaging, while the 5-104178-1 is supplied in tube packaging. Both formats are standard for through-hole connectors and do not affect electrical or mechanical performance. Packaging selection may influence inventory management and automated assembly compatibility.

Q: Are both parts suitable for automotive and medical applications?

A: Both parts meet RoHS compliance and UL94 V-0 flammability standards. The 5-104178-1 is explicitly listed for automotive, general purpose, medical, and telecommunications applications. The HTMS-104-02-S-S, as an active production part with equivalent certifications, is suitable for these application categories. Application-specific qualification should follow customer design requirements and regulatory standards.