Equivalent & Substitute Parts for TML-125-01-G-D

Part Overview

The TML-125-01-G-D is a shrouded rectangular connector header manufactured by Samtec Inc., designed for through-hole board-to-board applications. This 50-position connector operates at 0.050" (1.27mm) pitch with 2 rows spaced 0.100" (2.54mm) apart. The part is currently active in production with 806 units in stock. Equivalent and substitute parts are identified to provide alternative sourcing options when the primary part is unavailable or when design requirements permit functional alternatives within specified electrical and mechanical parameters.

Substiute Parts

TML-125-01-G-D

Samtec Inc.In Stock: 856TML-125-01-G-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

Substitute parts for the TML-125-01-G-D are identified based on the following critical parameters that must align for functional equivalence:

Core Matching Parameters:

• 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 or Board to Board/Cable

The substitute parts 104068-5 and 5-104068-5 (both TE Connectivity AMP Connectors, AMPMODU System 50 series) satisfy these core parameters. Both parts are manufactured headers with identical pitch, row spacing, position count, and mounting characteristics. Differences exist in shrouding design (2-wall vs. 4-wall), contact shape (circular vs. square), contact finish specifications, and compliance certifications, which are documented in the parameter comparison table below.

Parameter Comparison

Engineering Selection Recommendations

Primary Selection - TML-125-01-G-D (Samtec Inc.): Select this part when ROHS3 compliance is mandatory and operating temperature range of -55°C to 125°C is required. The 4-wall shrouding provides enhanced EMI shielding and mechanical protection. LCP insulation material offers superior dimensional stability. Gold plating on both mating and post contacts ensures corrosion resistance across the full operating temperature range.

Alternative Selection - 5-104068-5 (TE Connectivity AMP Connectors): This part is functionally equivalent for applications where ROHS3 compliance is required. It provides identical pitch, row spacing, and position count. The 2-wall shrouding reduces overall connector profile. Operating temperature range is -65°C to 105°C, which is suitable for applications not requiring the extended high-temperature capability of the TML-125-01-G-D. This part is available in higher inventory (1604 units).

Non-Recommended Alternative - 104068-5 (TE Connectivity AMP Connectors): This part does not meet ROHS3 compliance requirements and is therefore not recommended for new designs or applications with RoHS mandates. The RoHS non-compliant status disqualifies this part from use in regulated industries and regions with RoHS enforcement.

Frequently Asked Questions (FAQ)

Q: Can 104068-5 be used as a direct substitute for TML-125-01-G-D?

A: No. While 104068-5 shares identical pitch (0.050"), row spacing (0.100"), position count (50), and mounting type (through-hole solder), it is RoHS non-compliant. The TML-125-01-G-D is ROHS3 compliant. Use of 104068-5 violates RoHS3 requirements and is not permitted in applications subject to RoHS regulations.

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

A: Both parts are TE Connectivity AMPMODU System 50 headers with identical electrical and mechanical specifications. The primary difference is RoHS compliance status: 104068-5 is RoHS non-compliant, while 5-104068-5 is ROHS3 compliant. For new designs, 5-104068-5 is the appropriate choice.

Q: Are the shrouding differences between TML-125-01-G-D (4-wall) and the TE Connectivity parts (2-wall) significant?

A: Yes. The 4-wall shrouding on TML-125-01-G-D provides greater EMI shielding and mechanical protection compared to 2-wall shrouding on the TE Connectivity alternatives. Applications requiring enhanced electromagnetic interference mitigation should retain the TML-125-01-G-D. Applications with less stringent EMI requirements may accept the 2-wall design.

Q: What is the impact of different contact finish specifications?

A: TML-125-01-G-D uses gold plating on both mating contacts (10.0µin) and posts (gold flash). The TE Connectivity alternatives use gold on mating contacts (30.0µin) but tin or tin-lead on posts. Gold plating provides superior corrosion resistance and is preferred for high-reliability applications. The thicker gold plating (30.0µin vs. 10.0µin) on TE Connectivity mating contacts provides additional corrosion protection.

Q: Does the operating temperature range difference affect substitution?

A: Yes. TML-125-01-G-D operates from -55°C to 125°C, while TE Connectivity alternatives operate from -65°C to 105°C. The TML-125-01-G-D supports higher maximum temperature. Applications requiring operation above 105°C must use TML-125-01-G-D. Applications operating within -65°C to 105°C range may use either part.

Q: What packaging differences exist, and do they affect compatibility?

A: TML-125-01-G-D is supplied in bulk packaging, while TE Connectivity parts are supplied in tube packaging. Packaging affects handling, storage, and ordering quantities but does not affect electrical or mechanical compatibility. Verify packaging requirements with procurement specifications.

Q: Is contact shape (square vs. circular) a compatibility concern?

A: Contact shape differences (square on TML-125-01-G-D vs. circular on TE Connectivity parts) do not affect mating compatibility with standard 0.050" pitch receptacles. Both shapes are designed for the same pitch and row spacing. However, contact shape may affect insertion force and retention characteristics. Verify mating receptacle compatibility if insertion force specifications are critical.