TML-134-03-G-D Equivalent & Substitute Parts

Part Overview

The TML-134-03-G-D is a shrouded rectangular connector header manufactured by Samtec Inc., designed for through-hole board-to-board applications. This 68-position connector operates at 0.050" (1.27mm) pitch with dual-row configuration and 0.100" (2.54mm) row spacing. The part features gold-plated phosphor bronze contacts, liquid crystal polymer insulation, and push-pull fastening. Currently in active production status with 748 units in stock, this connector serves applications requiring reliable solder termination and keyed mating interfaces. Equivalent parts are identified to support procurement flexibility, design alternatives, and supply chain continuity.

Substiute Parts

TML-134-03-G-D

Samtec Inc.In Stock: 790TML-134-03-G-D Datasheet

Current PartRFQ

6-104068-8

TE Connectivity AMP ConnectorsIn Stock: 18906-104068-8 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TML-134-03-G-D is determined by strict alignment of the following critical parameters:

Primary Matching Criteria:

• Connector type: Header
• Contact type: Male pin
• Number of positions: 68
• 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 or board to board compatible

Secondary Compatibility Parameters:

• Shrouding configuration (4-wall vs. 2-wall affects mechanical fit)
• Contact length specifications (mating and post lengths)
• Insulation height
• Operating temperature range
• Contact finish and material composition
• Regulatory compliance (RoHS3)

The substitute part 6-104068-8 (TE Connectivity AMP Connectors) matches all primary criteria and maintains functional compatibility within the specified parameter tolerances. Differences in shrouding design (2-wall vs. 4-wall), contact geometry (circular vs. square), and contact finish thickness represent design variations that do not preclude substitution when mechanical envelope and electrical performance requirements are satisfied.

Parameter Comparison

Engineering Selection Recommendations

Primary Selection - TML-134-03-G-D (Samtec Inc.):

Select the TML-134-03-G-D when the design requires 4-wall shrouding, phosphor bronze contact material, liquid crystal polymer insulation, and the extended upper operating temperature of 125°C. This part is active in production with established supply availability. ROHS3 compliance and EAR99 export classification are confirmed.

Substitute Selection - 6-104068-8 (TE Connectivity AMP Connectors):

The 6-104068-8 serves as a functional equivalent when design constraints permit 2-wall shrouding, thermoplastic insulation, and copper alloy contacts. This part offers higher stock availability (1850 units) and thicker gold plating on mating contacts (30.0µin vs. 10.0µin). The operating temperature range extends to -65°C but is limited to 105°C maximum. ROHS3 compliance and EAR99 classification are confirmed. The 30VAC voltage rating is specified for this part.

Substitution Feasibility:

Both parts satisfy the core functional requirements of 68-position, 0.050" pitch, dual-row, through-hole solder termination headers. Mechanical compatibility is established through matching pitch, row spacing, and mounting type. Regulatory compliance (ROHS3, EAR99) is equivalent. Selection between these parts depends on specific design requirements regarding shrouding style, insulation material, contact geometry, and operating temperature envelope.

Frequently Asked Questions (FAQ)

Q: Can the 6-104068-8 directly replace the TML-134-03-G-D in existing designs?

A: Direct replacement requires verification of three factors: (1) mechanical envelope compatibility with 2-wall vs. 4-wall shrouding, (2) operating temperature requirements within the -65°C to 105°C range of the TE part, and (3) acceptance of thermoplastic insulation and copper alloy contacts in place of LCP and phosphor bronze. The matching pitch (0.050"), row spacing (0.100"), position count (68), and solder termination ensure electrical and functional compatibility.

Q: What are the key differences in contact design between these parts?

A: The TML-134-03-G-D features square phosphor bronze contacts with 10.0µin gold plating on mating surfaces and gold post finish. The 6-104068-8 features circular copper alloy contacts with 30.0µin gold plating on mating surfaces and tin post finish (150.0µin thickness). The thicker gold plating on the TE part provides enhanced corrosion resistance on mating surfaces.

Q: How do the operating temperature ranges differ?

A: The TML-134-03-G-D operates from -55°C to 125°C, providing a 20°C higher upper temperature limit. The 6-104068-8 operates from -65°C to 105°C, providing a 10°C lower minimum temperature but 20°C lower maximum temperature. Design applications requiring sustained operation above 105°C must use the Samtec part.

Q: What is the significance of the shrouding difference (4-wall vs. 2-wall)?

A: 4-wall shrouding on the TML-134-03-G-D provides complete perimeter protection and keying slot functionality. 2-wall shrouding on the 6-104068-8 reduces overall connector profile and material mass while maintaining contact protection on primary mating surfaces. Mechanical envelope constraints and keying requirements determine which shrouding style is acceptable.

Q: Are both parts RoHS3 compliant?

A: Yes. Both the TML-134-03-G-D and 6-104068-8 are ROHS3 compliant and carry EAR99 export classification with matching HTSUS code 8536.69.4040.

Q: What packaging formats are available?

A: The TML-134-03-G-D is supplied in bulk packaging with 748 units in stock. The 6-104068-8 is supplied in tube packaging with 1850 units in stock. Packaging format affects handling, storage, and automated assembly compatibility.

Q: How do the insulation materials compare?

A: The TML-134-03-G-D uses liquid crystal polymer (LCP) insulation, which provides superior dimensional stability and thermal performance. The 6-104068-8 uses thermoplastic insulation, which is standard for general-purpose applications. LCP insulation is preferred for high-precision applications and extreme temperature environments.

Q: Is the voltage rating specification relevant for substitution?

A: The 6-104068-8 specifies a 30VAC voltage rating. The TML-134-03-G-D does not specify a voltage rating in the provided data. For applications with defined voltage requirements, the specified 30VAC rating of the TE part should be verified against design specifications. The absence of a specified voltage rating for the Samtec part does not indicate lower voltage capability.