SMM-128-02-F-S-K-TR Equivalent & Substitute Parts

Part Overview

The SMM-128-02-F-S-K-TR is a 28-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 2.00mm pitch, gold-plated mating contacts, and operates across -55°C to 125°C. The part is currently active in production with full inventory availability. Identifying equivalent and substitute parts is necessary to ensure design flexibility, manage supply chain continuity, and support alternative sourcing strategies while maintaining electrical and mechanical compatibility.

Substiute Parts

SMM-128-02-F-S-K-TR

Samtec Inc.In Stock: 1105SMM-128-02-F-S-K-TR Datasheet

Current PartRFQ

SMM-128-02-F-S-P-TR

Samtec Inc.In Stock: 3684SMM-128-02-F-S-P-TR Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SMM-128-02-F-S-K-TR is determined by strict equivalence across the following critical parameters:

• Connector type (Receptacle)
• Number of positions (28)
• Pitch specification (0.079" / 2.00mm)
• Mounting method (Surface Mount)
• Contact configuration (Female Socket)
• Current and voltage ratings (3.2A per Contact, 350VAC)
• Operating temperature range (-55°C ~ 125°C)
• Contact finish material and specification (Gold, 3.00µin)
• Termination method (Solder)
• Compliance certifications (UL94 V-0, ROHS3)

The substitute part SMM-128-02-F-S-P-TR matches all these parameters. The difference between the main part and substitute lies in the fastening type designation within the part number suffix, which does not alter the electrical or mechanical compatibility of the connector in standard applications.

Parameter Comparison

Engineering Selection Recommendations

Both the SMM-128-02-F-S-K-TR and SMM-128-02-F-S-P-TR are active production parts from Samtec Inc. with full ROHS3 compliance and UL94 V-0 flammability certification. Both parts carry MSL Level 1 (Unlimited) moisture sensitivity rating, indicating no special storage or handling requirements. The SMM-128-02-F-S-P-TR currently maintains higher inventory availability (3633 pcs vs. 1046 pcs), which may support supply chain continuity objectives. Selection between these parts should be based on design documentation requirements, fastening type specifications, and inventory availability at the time of procurement.

Frequently Asked Questions (FAQ)

Q: Are SMM-128-02-F-S-K-TR and SMM-128-02-F-S-P-TR electrically interchangeable?

A: Yes. Both connectors share identical electrical specifications including current rating (3.2A per Contact), voltage rating (350VAC), contact material (Beryllium Copper with gold plating), and operating temperature range (-55°C ~ 125°C).

Q: What is the difference between the K and P designations in the part numbers?

A: The K and P suffixes indicate different fastening type designations within Samtec's part numbering scheme. This distinction does not affect electrical or mechanical compatibility in standard board-to-board or cable connection applications.

Q: Can I substitute SMM-128-02-F-S-P-TR for SMM-128-02-F-S-K-TR in existing designs?

A: Yes, provided your design documentation does not explicitly require the K-type fastening specification. Both parts are mechanically and electrically equivalent across all specified parameters.

Q: Are there any compliance or certification differences between these parts?

A: No. Both parts carry identical certifications: ROHS3 compliance, UL94 V-0 flammability rating, EAR99 export classification, and MSL Level 1 moisture sensitivity rating.

Q: What is the pitch specification for these connectors?

A: Both connectors feature a 0.079" (2.00mm) mating pitch, which determines compatibility with mating connectors and PCB layout requirements.

Q: Do these connectors require special handling or storage?

A: No. Both parts carry MSL Level 1 (Unlimited) rating, indicating no moisture sensitivity restrictions or special storage conditions are required.