SMS-115-01-T-D Equivalent & Substitute Parts Reference

Part Overview

The SMS-115-01-T-D is a 30-position rectangular receptacle connector manufactured by Samtec Inc., designed for through-hole board-to-board applications. This connector features a 0.050" (1.27mm) pitch mating interface with tin contact finish and operates across the temperature range of -55°C to 125°C. The product maintains active status with 1051 units in current inventory stock.

Equivalent and substitute parts are identified to address component availability, supply chain continuity, and specific application requirements where alternative contact finishes or electrical ratings may be acceptable within system design parameters.

Substiute Parts

SMS-115-01-T-D

Samtec Inc.In Stock: 1110SMS-115-01-T-D Datasheet

Current PartRFQ

104078-4

TE Connectivity AMP ConnectorsIn Stock: 1021104078-4 Datasheet

SimilarRFQ

5-104078-4

TE Connectivity AMP ConnectorsIn Stock: 19275-104078-4 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SMS-115-01-T-D is determined by the following critical parameters that must remain constant across all equivalent parts:

Mandatory Matching Parameters:

• Connector type: Receptacle
• Number of positions: 30
• Pitch - mating: 0.050" (1.27mm)
• Number of rows: 2
• Row spacing - mating: 0.100" (2.54mm)
• Mounting type: Through hole
• Fastening type: Push-pull
• Style: Board to board
• Contact shape: Square
• Insulation color: Black

Variable Parameters Permitting Substitution:

• Contact finish - mating (tin or gold acceptable)
• Contact material (phosphor bronze or copper alloy acceptable)
• Insulation material (liquid crystal polymer or thermoplastic glass-filled acceptable)
• Operating temperature range (provided minimum and maximum bounds are met or exceeded)
• Current rating (provided minimum current capacity is maintained)

The substitute parts 104078-4 and 5-104078-4 (TE Connectivity AMP Connectors, AMPMODU System 50 series) satisfy all mandatory matching parameters and are therefore classified as direct functional equivalents.

Parameter Comparison

Engineering Selection Recommendations

SMS-115-01-T-D (Primary Selection): The SMS-115-01-T-D remains the primary component choice for applications requiring tin contact finish, higher current capacity (5A per contact), and extended high-temperature operation to 125°C. This part is ROHS3 compliant and maintains active product status with adequate inventory availability.

5-104078-4 (Preferred Substitute): The 5-104078-4 is the recommended substitute when SMS-115-01-T-D availability is constrained. This part maintains ROHS3 compliance, matches all critical mechanical and electrical interface parameters, and offers superior inventory depth (1900 units). The gold contact finish provides enhanced corrosion resistance compared to tin. However, the current rating is reduced to 1A per contact and maximum operating temperature is limited to 105°C. Applications must accommodate these electrical and thermal constraints.

104078-4 (Secondary Substitute): The 104078-4 functions as an equivalent substitute with identical mechanical and electrical specifications to 5-104078-4. RoHS compliance status is not applicable for this variant. Selection between 104078-4 and 5-104078-4 should be based on regulatory requirements and supply chain availability.

Frequently Asked Questions (FAQ)

Q: Can SMS-115-01-T-D be directly replaced with 104078-4 or 5-104078-4 in existing designs?

A: Direct mechanical and electrical interface compatibility is confirmed. Both TE Connectivity parts maintain identical pitch (0.050"), row spacing (0.100"), position count (30), and mounting configuration (through-hole, push-pull). However, application-level compatibility depends on current and temperature requirements. The SMS-115-01-T-D supports 5A per contact and -55°C to 125°C operation, while both TE Connectivity substitutes are rated for 1A per contact and -65°C to 105°C operation. Designs operating above 1A per contact or above 105°C require the SMS-115-01-T-D.

Q: What is the difference between contact finishes (tin versus gold)?

A: The SMS-115-01-T-D features tin contact finish on mating surfaces, while 104078-4 and 5-104078-4 feature gold plating (30.0µin thickness). Gold provides superior corrosion resistance and lower contact resistance in low-signal applications. Tin is acceptable for general-purpose applications with adequate current capacity. Both finishes are compatible with standard solder termination processes.

Q: Are there differences in insulation material between these parts?

A: Yes. The SMS-115-01-T-D uses Liquid Crystal Polymer (LCP) insulation, while the TE Connectivity substitutes use thermoplastic glass-filled material. Both materials are suitable for through-hole board-to-board applications. LCP offers superior dimensional stability and lower moisture absorption. The thermoplastic glass-filled material provides adequate performance for standard industrial applications.

Q: What is the significance of the insulation height difference (0.335" versus 0.350")?

A: The SMS-115-01-T-D insulation height is 0.335" (8.51mm), while TE Connectivity parts measure 0.350" (8.89mm). This 0.015" (0.38mm) difference may affect PCB layout clearances and mating stack heights. Designs with tight vertical spacing constraints should account for this dimensional variation.

Q: Which substitute part should be selected for new designs?

A: For new designs with no legacy constraints, 5-104078-4 is recommended based on ROHS3 compliance, superior inventory availability (1900 units), and active product status. If current requirements exceed 1A per contact or operating temperature exceeds 105°C, the SMS-115-01-T-D is mandatory.

Q: Are 104078-4 and 5-104078-4 interchangeable?

A: Yes, 104078-4 and 5-104078-4 are mechanically and electrically interchangeable. The primary difference is RoHS compliance status. The 5-104078-4 is ROHS3 compliant, while 104078-4 status is not applicable. Selection should prioritize regulatory requirements and supply chain availability.