SFM-140-02-S-S-LC Equivalent & Substitute Parts

Part Overview

The SFM-140-02-S-S-LC is a 40-position receptacle connector from Samtec Inc.'s Tiger Eye™ SFM series, designed for surface mount board-to-board or cable applications. This connector features gold-plated mating contacts, push-pull fastening, and board lock functionality. The part is currently active in production with 983 units in stock. Alternative models within the same series are available to support inventory optimization and supply chain flexibility while maintaining full electrical and mechanical compatibility.

Substiute Parts

SFM-140-02-S-S-LC

Samtec Inc.In Stock: 1073SFM-140-02-S-S-LC Datasheet

Current PartRFQ

SFM-140-L2-S-S-LC

Samtec Inc.In Stock: 927SFM-140-L2-S-S-LC Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

The SFM-140-02-S-S-LC has one qualified substitute within the Tiger Eye™ SFM series: SFM-140-L2-S-S-LC. Substitution eligibility is determined by the following critical parameters that must remain identical:

• Number of Positions: 40
• Pitch - Mating: 0.050" (1.27mm)
• Connector Type: Receptacle
• Mounting Type: Surface Mount
• Contact Finish - Mating: Gold
• Current Rating: 3.2A per Contact
• Voltage Rating: 250VAC
• Operating Temperature Range: -55°C ~ 125°C
• Material Flammability Rating: UL94 V-0
• RoHS Status: ROHS3 Compliant

Both parts share identical electrical performance characteristics, mechanical dimensions, and regulatory compliance. The difference between these part numbers reflects internal Samtec manufacturing or packaging variations that do not affect form, fit, or function in the application.

Parameter Comparison

Engineering Selection Recommendations

Both SFM-140-02-S-S-LC and SFM-140-L2-S-S-LC are active production parts with full ROHS3 compliance and identical electrical and mechanical specifications. Selection between these parts should be based on inventory availability and lead time requirements. The SFM-140-02-S-S-LC currently has higher stock levels (983 units) compared to SFM-140-L2-S-S-LC (859 units). Both parts meet UL94 V-0 flammability requirements and are suitable for applications requiring 40-position, 0.050" pitch surface mount connectors with 3.2A per contact current capacity and 250VAC voltage rating across the -55°C to 125°C operating temperature range.

Frequently Asked Questions (FAQ)

Q: Are SFM-140-02-S-S-LC and SFM-140-L2-S-S-LC electrically interchangeable?

A: Yes. Both parts have identical electrical ratings: 3.2A per contact, 250VAC voltage rating, and gold-plated mating contacts with 30.0µin thickness. They are fully interchangeable in electrical performance.

Q: Do these connectors have the same physical dimensions and mating interface?

A: Yes. Both connectors share identical mechanical specifications including 40 positions, 0.050" (1.27mm) pitch, surface mount termination, and the same mated stacking heights (6.15mm through 11.76mm). They are mechanically interchangeable.

Q: What is the difference between these two part numbers?

A: The difference between SFM-140-02-S-S-LC and SFM-140-L2-S-S-LC reflects internal Samtec manufacturing or packaging variations. All functional, electrical, and mechanical parameters remain identical.

Q: Are both parts RoHS compliant?

A: Yes. Both SFM-140-02-S-S-LC and SFM-140-L2-S-S-LC are ROHS3 compliant and suitable for applications requiring RoHS certification.

Q: What is the moisture sensitivity level for these connectors?

A: Both parts have Moisture Sensitivity Level (MSL) 1, which indicates unlimited shelf life without special moisture control requirements.

Q: Can these connectors be used in high-temperature applications?

A: Yes. Both connectors are rated for operating temperatures from -55°C to 125°C and are constructed with UL94 V-0 flammability-rated Liquid Crystal Polymer insulation, suitable for demanding thermal environments.