TML-125-03-T-D Equivalent & Substitute Parts

Part Overview

The TML-125-03-T-D is a shrouded rectangular connector header manufactured by Samtec Inc., designed for through-hole board-to-board applications. This 50-position connector operates across the temperature range of -55°C to 105°C and features a 0.050" (1.27mm) pitch with 0.100" (2.54mm) row spacing. The part is currently active in production with 900 pieces available in stock. Equivalent and substitute parts are identified to support design flexibility, inventory management, and supply chain continuity for applications requiring compatible 50-position connector headers with matching electrical and mechanical specifications.

Substiute Parts

TML-125-03-T-D

Samtec Inc.In Stock: 944TML-125-03-T-D Datasheet

Current PartRFQ

104068-5

TE Connectivity AMP ConnectorsIn Stock: 2210104068-5 Datasheet

SimilarRFQ

5-104068-5

TE Connectivity AMP ConnectorsIn Stock: 16845-104068-5 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TML-125-03-T-D is determined by strict equivalence across the following critical parameters:

Primary Matching Criteria:

• Connector Type: Header
• Contact Type: Male Pin
• Number of Positions: 50
• Number of Rows: 2
• Pitch - Mating: 0.050" (1.27mm)
• Row Spacing - Mating: 0.100" (2.54mm)
• Mounting Type: Through Hole
• Termination: Solder
• Style: Board to Board

Secondary Compatibility Factors:

• Operating Temperature Range: -55°C to 105°C minimum
• Insulation Material: Thermoplastic or LCP acceptable
• Contact Material: Phosphor Bronze or Copper Alloy acceptable
• Shrouding Configuration: Shrouded acceptable

The substitute parts identified (104068-5 and 5-104068-5) from TE Connectivity AMP Connectors meet all primary matching criteria. Both parts are 50-position headers with 0.050" pitch, 0.100" row spacing, through-hole solder termination, and board-to-board configuration. Operating temperature ranges of -65°C to 105°C exceed the minimum requirement. Differences in shrouding design (2-wall versus 4-wall), contact finish (gold versus tin), and insulation material (thermoplastic versus LCP) represent acceptable variations within the rectangular connector category for equivalent functionality.

Parameter Comparison

Engineering Selection Recommendations

TML-125-03-T-D (Samtec Inc.) is the primary specification. This part is ROHS3 compliant and features a 4-wall shrouded design with square contacts and phosphor bronze material. The push-pull fastening mechanism and LCP insulation material provide specific mechanical and thermal characteristics. This part is recommended for applications where the exact shrouding geometry, contact shape, and fastening type are design requirements.

5-104068-5 (TE Connectivity AMP Connectors) is the preferred substitute when equivalent functionality is acceptable. This part achieves ROHS3 compliance, matching the primary specification's regulatory status. The 2-wall shrouded design, circular gold-plated contacts, and latch holder fastening represent functional equivalents within the rectangular connector category. The extended operating temperature range (-65°C to 105°C) provides additional thermal margin. This part is suitable for applications where connector interchangeability is prioritized and design constraints do not mandate specific shrouding geometry or contact configuration.

104068-5 (TE Connectivity AMP Connectors) is an alternative substitute with identical electrical and mechanical specifications to 5-104068-5, with the exception of RoHS compliance status. This part is RoHS non-compliant and should be selected only when regulatory requirements do not mandate RoHS3 compliance. The tin-lead post finish differs from the tin finish of the primary specification.

Selection between substitute parts should be based on regulatory compliance requirements, inventory availability, and design constraints regarding shrouding configuration and fastening mechanism.

Frequently Asked Questions (FAQ)

Q: Can 104068-5 and 5-104068-5 be used interchangeably with TML-125-03-T-D?

A: Both TE Connectivity parts meet the core electrical and mechanical specifications: 50 positions, 0.050" pitch, 0.100" row spacing, through-hole solder termination, and board-to-board configuration. However, differences exist in shrouding design (2-wall versus 4-wall), contact finish (gold versus tin), fastening type (latch holder versus push-pull), and contact shape (circular versus square). These differences may affect mechanical fit and mating force characteristics. Verification of physical compatibility with mating connectors and PCB layout is required before substitution.

Q: What is the difference between 104068-5 and 5-104068-5?

A: Both parts are from TE Connectivity's AMPMODU System 50 series with identical electrical and mechanical specifications. The primary difference is RoHS compliance status: 5-104068-5 is ROHS3 compliant, while 104068-5 is RoHS non-compliant. The post finish also differs: 5-104068-5 uses tin, while 104068-5 uses tin-lead. For applications requiring RoHS3 compliance, 5-104068-5 is the appropriate selection.

Q: Are the operating temperature ranges equivalent?

A: The TML-125-03-T-D operates from -55°C to 105°C. Both TE Connectivity substitutes operate from -65°C to 105°C, providing a 10°C lower minimum temperature rating. This extended range is compatible with the primary specification and provides additional thermal margin for applications operating at lower temperatures.

Q: What are the packaging differences?

A: TML-125-03-T-D is supplied in bulk packaging with 900 pieces in stock. Both TE Connectivity substitutes are supplied in tube packaging: 104068-5 has 2187 pieces available, and 5-104068-5 has 1604 pieces available. Packaging format may affect handling, storage, and assembly line integration requirements.

Q: How do the shrouding designs differ?

A: TML-125-03-T-D features 4-wall shrouding, providing complete perimeter protection. Both TE Connectivity substitutes feature 2-wall shrouding, providing reduced perimeter coverage. The 4-wall design may offer improved EMI shielding and mechanical protection, while the 2-wall design reduces overall connector profile. Physical compatibility with mating connectors designed for 4-wall shrouding must be verified.

Q: What is the significance of contact finish differences?

A: TML-125-03-T-D uses tin-plated contacts on both mating and post surfaces. TE Connectivity substitutes use gold-plated mating contacts (30.0µin thickness) with either tin or tin-lead post finishes. Gold plating provides improved corrosion resistance and contact reliability, particularly in harsh environments. Tin and tin-lead finishes are standard for solder termination. Contact finish compatibility with mating connector specifications should be verified.

Q: Can these parts be used in automotive applications?

A: TE Connectivity 104068-5 and 5-104068-5 list automotive applications in their specifications. TML-125-03-T-D does not specify automotive applications. For automotive applications, the TE Connectivity parts are documented as suitable. Compliance with specific automotive standards (AEC-Q200, ISO 16750, etc.) should be verified against application requirements.