SFM-145-L2-S-D-A Equivalent & Substitute Parts

Part Overview

The SFM-145-L2-S-D-A is a 90 Position Receptacle Connector manufactured by Samtec Inc. as part of the Tiger Eye™ SFM series. This surface mount rectangular connector operates at 0.050" (1.27mm) pitch with gold-plated mating contacts and is designed for board-to-board or cable applications. The connector maintains an active product status and is RoHS3 compliant with MSL 1 rating, making it suitable for applications requiring high-density interconnection in controlled thermal environments. Identifying equivalent substitute parts ensures design flexibility, supply chain continuity, and component availability across manufacturing cycles.

Substiute Parts

SFM-145-L2-S-D-A

Samtec Inc.In Stock: 782SFM-145-L2-S-D-A Datasheet

Current PartRFQ

SFM-145-02-S-D-A

Samtec Inc.In Stock: 1138SFM-145-02-S-D-A Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SFM-145-L2-S-D-A is determined by strict equivalence across the following critical parameters:

• Connector Type & Contact Configuration: Receptacle with female socket contacts
• Position Count & Arrangement: 90 positions in 2-row configuration
• Pitch Specification: 0.050" (1.27mm) mating pitch with 0.050" (1.27mm) row spacing
• Mounting Technology: Surface mount termination with solder attachment
• Electrical Performance: 3.2A per contact at 250VAC rating
• Environmental Compliance: RoHS3 compliance and MSL 1 rating
• Thermal Range: -55°C to 125°C operating temperature
• Contact Material & Finish: Beryllium copper with gold mating finish (30.0µin thickness) and tin post finish

The SFM-145-02-S-D-A meets all substitution criteria as it maintains identical electrical, mechanical, and environmental specifications within the Tiger Eye™ SFM series.

Parameter Comparison

Engineering Selection Recommendations

Both the SFM-145-L2-S-D-A and SFM-145-02-S-D-A are active products from Samtec Inc. with full RoHS3 compliance and identical electrical and mechanical specifications. Selection between these parts should be based on inventory availability and supply chain requirements. The SFM-145-02-S-D-A currently maintains higher inventory levels (1061 pcs) compared to the SFM-145-L2-S-D-A (730 pcs), which may influence procurement decisions for high-volume applications. Both connectors satisfy identical performance requirements for board-to-board interconnection at 0.050" pitch with 90-position capacity and 3.2A per contact current handling.

Frequently Asked Questions (FAQ)

Q: Can SFM-145-02-S-D-A be used as a direct replacement for SFM-145-L2-S-D-A?

A: Yes. Both connectors are functionally equivalent across all electrical, mechanical, and environmental parameters. They share identical pitch (0.050"), position count (90), row configuration (2 rows), current rating (3.2A per contact), voltage rating (250VAC), operating temperature range (-55°C to 125°C), and compliance certifications (RoHS3, UL94 V-0, MSL 1).

Q: Are there any differences in mating compatibility?

A: No. Both receptacle connectors maintain identical mating specifications including contact geometry, pitch, row spacing, and gold contact finish thickness. They are mechanically and electrically interchangeable with the same mating connector series.

Q: What is the significance of the part number suffix differences (L2 vs. 02)?

A: The suffix designates internal Samtec product variants within the SFM-145 base product family. Despite the different suffixes, both variants maintain identical functional specifications for the 90-position, 0.050" pitch receptacle configuration.

Q: Are both parts suitable for high-reliability applications?

A: Both connectors meet high-reliability requirements with UL94 V-0 flammability rating, RoHS3 compliance, MSL 1 moisture sensitivity level, and beryllium copper contacts with gold plating. Operating temperature range of -55°C to 125°C supports demanding thermal environments.

Q: What should drive the selection between these two equivalent parts?

A: Selection should be based on supply chain availability and inventory levels. Both parts are active products with identical performance characteristics. The SFM-145-02-S-D-A offers higher current inventory availability, which may be advantageous for procurement planning.