SMM-125-02-S-D-P-TR Equivalent & Substitute Parts

Part Overview

The SMM-125-02-S-D-P-TR is a 50-position receptacle connector from Samtec Inc.'s Tiger Eye™ SMM series, designed for surface mount board-to-board or cable applications. This connector features a 0.079" (2.00mm) pitch with gold-plated mating contacts and is rated for 3.2A per contact at 350VAC. The part maintains Active product status with full RoHS3 compliance and UL94 V-0 flammability rating. Identifying equivalent and substitute parts is necessary when addressing supply chain requirements, lead time constraints, or specific application compatibility needs while maintaining electrical and mechanical performance standards.

Substiute Parts

SMM-125-02-S-D-P-TR

Samtec Inc.In Stock: 1123SMM-125-02-S-D-P-TR Datasheet

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SMM-125-02-S-D-P-TR

Samtec Inc.In Stock: 1123SMM-125-02-S-D-P-TR Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SMM-125-02-S-D-P-TR is determined by strict alignment across the following critical parameters:

Connector configuration: 50-position receptacle with 2-row arrangement and 0.079" (2.00mm) mating pitch Contact specifications: Female socket contacts with gold mating finish (30.0µin thickness) and 3.2A current rating per contact Electrical performance: 350VAC voltage rating and -55°C to 125°C operating temperature range Material and compliance: Liquid Crystal Polymer insulation, UL94 V-0 flammability rating, and ROHS3 compliance Mounting and termination: Surface mount configuration with solder termination and push-pull fastening Packaging format: Tape & Reel delivery suitable for automated assembly

Parts meeting all these parameters are classified as direct equivalents. Deviations in any parameter—including pitch, contact count, row configuration, current rating, voltage rating, temperature range, contact finish specification, insulation material, or compliance certifications—disqualify a part from substitution eligibility.

Parameter Comparison

Engineering Selection Recommendations

The SMM-125-02-S-D-P-TR maintains Active product status with full ROHS3 compliance and UL94 V-0 flammability certification, confirming suitability for current production and regulated applications. The part's Moisture Sensitivity Level 1 (Unlimited) classification eliminates moisture-related handling constraints during assembly and storage.

When selecting equivalent or substitute connectors, prioritize parts that maintain identical electrical ratings (3.2A per contact, 350VAC), mechanical configuration (50-position, 2-row, 0.079" pitch), and material specifications (LCP insulation, gold mating finish at 30.0µin thickness). Compliance certifications and product status must remain unchanged to ensure regulatory acceptance and supply chain continuity.

Frequently Asked Questions (FAQ)

Q: What defines a direct equivalent for the SMM-125-02-S-D-P-TR? A: A direct equivalent must match all specified parameters: 50-position receptacle configuration, 0.079" (2.00mm) pitch, 2-row arrangement, 3.2A per contact current rating, 350VAC voltage rating, gold mating contact finish at 30.0µin thickness, LCP insulation, UL94 V-0 rating, ROHS3 compliance, surface mount termination, and Tape & Reel packaging.

Q: Can connectors with different pitch specifications substitute for the SMM-125-02-S-D-P-TR? A: No. The 0.079" (2.00mm) mating pitch is a critical mechanical parameter. Connectors with different pitch values are not compatible and cannot substitute.

Q: Are there compatibility considerations for the push-pull fastening type? A: The push-pull fastening mechanism is integral to the connector design. Substitute parts must retain this fastening type to ensure proper mating and retention with corresponding plug connectors.

Q: What is the significance of the gold contact finish thickness specification? A: The 30.0µin (0.76µm) gold thickness on mating contacts ensures consistent contact resistance, durability, and electrical performance. Substitute parts must maintain this exact specification to preserve signal integrity and contact reliability.

Q: Does the Moisture Sensitivity Level 1 rating affect handling or storage requirements? A: MSL 1 (Unlimited) indicates no moisture sensitivity constraints. The part can be stored and handled without special humidity control or baking procedures prior to assembly.

Q: How does the LCP insulation material impact substitution decisions? A: Liquid Crystal Polymer insulation provides the specified mechanical strength, thermal stability, and flammability performance. Substitute parts must use LCP insulation to maintain UL94 V-0 compliance and operating temperature range (-55°C to 125°C).

Q: Is the Tiger Eye™ SMM series designation important for substitution? A: Yes. The series designation identifies the connector family and design generation. Parts from the same series with matching configuration parameters are direct equivalents.