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

Part Overview

The HTMS-104-02-T-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 male pin contacts and solder termination. The connector is actively produced and widely used in applications requiring reliable push-pull fastening and compact form factors. Identifying equivalent and substitute parts is essential for supply chain continuity, design flexibility, and cost optimization across manufacturing and assembly operations.

Substiute Parts

HTMS-104-02-T-S

Samtec Inc.In Stock: 923HTMS-104-02-T-S Datasheet

Current PartRFQ

5-104178-1

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

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the HTMS-104-02-T-S is determined by strict alignment of the following critical parameters:

Core Compatibility Parameters:

• Pitch - Mating: 0.050" (1.27mm) — exact match required
• Number of Positions: 4 — exact match required
• Number of Rows: 1 — exact match required
• Connector Type: Header — exact match required
• Contact Type: Male Pin — exact match required
• Mounting Type: Through Hole — exact match required
• Termination: Solder — exact match required
• Fastening Type: Push-Pull — exact match required
• Contact Shape: Square — exact match required

Acceptable Variation Parameters:

• Insulation Material: Both Liquid Crystal Polymer (LCP) and Thermoplastic are acceptable
• Contact Finish - Mating: Tin or Gold are both acceptable
• Operating Temperature Range: Substitute must meet or exceed the minimum and maximum operating temperatures
• Flammability Rating: UL94 V-0 compliance required
• RoHS Status: Both ROHS3 and RoHS Compliant are acceptable

The substitute part 5-104178-1 (TE Connectivity AMP Connectors) meets all core compatibility parameters and acceptable variation criteria, qualifying it as a direct functional equivalent.

Parameter Comparison

Engineering Selection Recommendations

Both the HTMS-104-02-T-S and 5-104178-1 are active products with full regulatory compliance. Selection between these parts should be based on the following factors:

HTMS-104-02-T-S (Samtec Inc.):

• Primary choice for applications requiring Liquid Crystal Polymer (LCP) insulation material
• Tin contact finish on mating surfaces
• Current rating of 5A per contact is specified
• ROHS3 Compliant status

5-104178-1 (TE Connectivity AMP Connectors):

• Alternative choice with extended operating temperature range (-65°C minimum vs. -55°C)
• Gold contact finish on mating surfaces provides enhanced corrosion resistance
• Thermoplastic insulation material
• RoHS Compliant status
• Higher inventory availability (1178 Pcs vs. 903 Pcs)
• Voltage rating of 30VAC is specified

Both parts satisfy UL94 V-0 flammability requirements, MSL 1 moisture sensitivity, and are suitable for board-to-board through-hole applications with push-pull fastening. The choice between them depends on specific application requirements regarding contact finish, insulation material, and operating temperature extremes.

Frequently Asked Questions (FAQ)

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

A: Yes. Both connectors share identical pitch (0.050"), position count (4), row configuration (1), contact type (male pin), mounting method (through hole), and fastening mechanism (push-pull). The physical and electrical interfaces are compatible. Differences in contact finish (gold vs. tin) and insulation material (thermoplastic vs. LCP) do not prevent functional substitution in standard board-to-board applications.

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

A: The primary differences are: (1) Contact finish - HTMS-104-02-T-S uses tin, while 5-104178-1 uses gold; (2) Insulation material - HTMS-104-02-T-S uses LCP, while 5-104178-1 uses thermoplastic; (3) Operating temperature minimum - HTMS-104-02-T-S operates from -55°C, while 5-104178-1 operates from -65°C; (4) Current rating specification - HTMS-104-02-T-S specifies 5A per contact, while 5-104178-1 specifies 30VAC voltage rating.

Q: Are both parts RoHS compliant?

A: Yes. HTMS-104-02-T-S is ROHS3 Compliant, and 5-104178-1 is RoHS Compliant. Both meet regulatory requirements for hazardous substance restrictions.

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

A: HTMS-104-02-T-S is supplied in Bulk packaging, while 5-104178-1 is supplied in Tube packaging. This affects handling and storage but does not impact functional performance.

Q: Which part should I select for applications requiring extended low-temperature operation?

A: The 5-104178-1 (TE Connectivity) is suitable for applications requiring operation down to -65°C, compared to the HTMS-104-02-T-S minimum of -55°C. Both support the upper temperature limit of 105°C.

Q: Are the contact materials interchangeable?

A: Both parts use copper-based contact materials (phosphor bronze in HTMS-104-02-T-S and copper alloy in 5-104178-1) with different surface finishes. These materials are functionally equivalent for standard electrical applications and are interchangeable from a performance standpoint.