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

Part Overview

The TMS-104-02-T-S is a 0.050" (1.27mm) pitch micro header connector manufactured by Samtec Inc., designed for through-hole board-to-board applications. This unshrouded, 4-position rectangular connector features male pins with solder termination and push-pull fastening. The part is currently active in production with full inventory availability. Equivalent and substitute parts are identified to support procurement flexibility, design alternatives, and supply chain continuity.

Substiute Parts

TMS-104-02-T-S

Samtec Inc.In Stock: 875TMS-104-02-T-S Datasheet

Current PartRFQ

5-104178-1

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

SimilarRFQ

HTMS-104-02-T-S

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

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the TMS-104-02-T-S are identified based on the following critical parameters that determine functional interchangeability:

• Pitch - Mating: 0.050" (1.27mm) — exact match required for PCB footprint compatibility
• Number of Positions: 4 — exact match required for circuit connectivity
• Number of Rows: 1 — exact match required for physical layout
• Connector Type: Header — exact match required for application type
• Contact Type: Male Pin — exact match required for mating interface
• Mounting Type: Through Hole — exact match required for assembly process
• Termination: Solder — exact match required for connection method
• Fastening Type: Push-Pull — exact match required for mechanical engagement

The identified substitutes meet all critical parameters. Variations in secondary parameters such as contact finish, insulation material, and operating temperature range are noted but do not prevent functional substitution when application requirements are within the specified ranges.

Parameter Comparison

Engineering Selection Recommendations

All three parts are active products with full RoHS compliance and UL94 V-0 flammability certification. Selection between the main part and substitutes should be based on the following factors:

TMS-104-02-T-S (Primary Part): Samtec manufacturing with phosphor bronze contacts finished in tin. Specified current rating of 5A per contact. LCP insulation material. Operating temperature range -55°C to 105°C. Bulk packaging.

5-104178-1 (TE Connectivity Substitute): TE Connectivity manufacturing with copper alloy contacts finished in gold on mating surface. Extended lower operating temperature range of -65°C to 105°C. Specified voltage rating of 30VAC. Thermoplastic insulation. Tube packaging. Current rating not specified in available data.

HTMS-104-02-T-S (Samtec Substitute): Samtec manufacturing with identical electrical and thermal specifications to the primary part. Phosphor bronze contacts finished in tin. LCP insulation material. Operating temperature range -55°C to 105°C. Bulk packaging. Represents a direct equivalent within the same manufacturer's product line.

Selection should prioritize parts matching the application's temperature, voltage, and current requirements. The TE Connectivity part offers extended low-temperature capability and gold contact finish for enhanced corrosion resistance. The Samtec HTMS variant provides identical performance characteristics to the primary part with alternative series designation.

Frequently Asked Questions (FAQ)

Q: Can the 5-104178-1 be used as a direct replacement for the TMS-104-02-T-S?

A: Yes, the 5-104178-1 meets all critical substitution parameters: 0.050" (1.27mm) pitch, 4-position, 1-row, through-hole solder termination, push-pull fastening, and unshrouded header configuration. The gold contact finish on the mating surface provides enhanced corrosion resistance compared to tin. The extended operating temperature range (-65°C to 105°C) supports applications requiring lower temperature operation. Verify that the application does not require the specific current rating of 5A per contact, as this is not specified for the TE part.

Q: What is the difference between the TMS-104-02-T-S and HTMS-104-02-T-S?

A: Both parts are manufactured by Samtec Inc. and share identical electrical, thermal, and mechanical specifications. The primary difference is the series designation: TMS versus HTMS. Both feature phosphor bronze contacts with tin finish, LCP insulation, 5A per contact current rating, and -55°C to 105°C operating temperature range. The HTMS variant represents an alternative series within Samtec's product portfolio.

Q: Are there packaging differences between these parts?

A: Yes. The TMS-104-02-T-S and HTMS-104-02-T-S are supplied in bulk packaging, while the 5-104178-1 is supplied in tube packaging. Packaging selection may affect handling, storage, and assembly processes but does not impact electrical or mechanical performance.

Q: What are the key parameters that must match for substitution?

A: Critical parameters for substitution are: pitch (0.050" / 1.27mm), number of positions (4), number of rows (1), connector type (header), contact type (male pin), mounting type (through hole), termination (solder), and fastening type (push-pull). All identified substitutes match these parameters exactly.

Q: Does the contact finish difference affect compatibility?

A: Contact finish affects corrosion resistance and environmental performance but does not prevent mechanical or electrical compatibility. Tin finish (TMS-104-02-T-S and HTMS-104-02-T-S) is suitable for standard applications. Gold finish (5-104178-1) provides enhanced corrosion resistance for harsh environments or applications requiring extended shelf life.

Q: What is the significance of the insulation material difference?

A: The TMS-104-02-T-S and HTMS-104-02-T-S use Liquid Crystal Polymer (LCP) insulation, while the 5-104178-1 uses thermoplastic insulation. Both materials meet UL94 V-0 flammability requirements. LCP offers superior dimensional stability and lower moisture absorption. Thermoplastic provides cost efficiency. Selection depends on application-specific environmental and performance requirements.