SFMC-125-L3-S-D Equivalent & Substitute Parts

Part Overview

The SFMC-125-L3-S-D is a 50-position receptacle connector from Samtec Inc.'s Tiger Eye™ SFMC series, designed for board-to-board or cable applications. This connector features 0.050" (1.27mm) pitch mating with through-hole solder termination and gold-plated mating contacts. The part is currently active in production with 815 units in stock. Substitute parts are identified to provide alternative sourcing options when the primary part number is unavailable or when inventory requirements necessitate alternative stock sources.

Substiute Parts

SFMC-125-L3-S-D

Samtec Inc.In Stock: 921SFMC-125-L3-S-D Datasheet

Current PartRFQ

SFMC-125-03-S-D

Samtec Inc.In Stock: 833SFMC-125-03-S-D Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SFMC-125-L3-S-D is determined by strict equivalence across the following critical parameters:

• Connector type (Receptacle)
• Contact type (Female Socket)
• Number of positions (50)
• Pitch - mating (0.050" / 1.27mm)
• Number of rows (2)
• Row spacing - mating (0.050" / 1.27mm)
• Mounting type (Through Hole)
• Termination method (Solder)
• Fastening type (Push-Pull)
• Contact finish - mating (Gold)
• Contact finish thickness - mating (30.0µin / 0.76µm)
• Operating temperature range (-55°C ~ 125°C)
• Current rating (2.9A per Contact)
• Insulation material (Liquid Crystal Polymer)
• Material flammability rating (UL94 V-0)
• RoHS compliance (ROHS3)

The SFMC-125-03-S-D meets all substitution criteria and is classified as an equivalent part within the Tiger Eye™ SFMC series.

Parameter Comparison

Engineering Selection Recommendations

Both the SFMC-125-L3-S-D and SFMC-125-03-S-D are active production parts from Samtec Inc. with identical electrical and mechanical specifications. Both parts are ROHS3 compliant and carry the same regulatory classifications (ECCN: EAR99, HTSUS: 8536.69.4040). Selection between these parts should be based on inventory availability and lead time requirements. The SFMC-125-L3-S-D currently has 815 units in stock, while the SFMC-125-03-S-D has 773 units available.

Frequently Asked Questions (FAQ)

Q: Are SFMC-125-L3-S-D and SFMC-125-03-S-D mechanically interchangeable?

A: Yes. Both connectors share identical mechanical dimensions, including pitch (0.050"), row spacing (0.050"), insulation height (0.180"), and contact length (0.075"). Both use through-hole solder termination with push-pull fastening.

Q: Do these parts have the same electrical performance?

A: Yes. Both parts have identical current ratings (2.9A per contact), operating temperature range (-55°C ~ 125°C), contact finish specifications (gold mating surface at 30.0µin thickness), and insulation material (Liquid Crystal Polymer).

Q: Are there differences in compliance or certifications?

A: Both parts are ROHS3 compliant with UL94 V-0 flammability rating. Both carry the same ECCN (EAR99) and HTSUS classifications. The SFMC-125-03-S-D specifies Moisture Sensitivity Level 1 (Unlimited) and REACH Unaffected status, while the SFMC-125-L3-S-D does not specify these parameters.

Q: Can I use these connectors in the same PCB design without modification?

A: Yes. The connectors are footprint-compatible and require no PCB layout changes. Both are 50-position receptacles with identical pitch and row spacing specifications.

Q: Which part should I select for new designs?

A: Either part is suitable for new designs. Selection should be based on current inventory availability and supplier lead times. Both parts are active production items from the same manufacturer and series.