SFC-120-T2-F-D-LC Equivalent & Substitute Parts

Part Overview

The SFC-120-T2-F-D-LC is a 40-position receptacle connector manufactured by Samtec Inc. from the Tiger Eye™ SFC series. This surface mount connector features 0.050" (1.27mm) pitch mating with gold-plated contacts and is designed for board-to-board or cable applications. The part is currently active in production with 854 units in stock. Equivalent and substitute parts are identified to provide design flexibility, supply chain alternatives, and component availability options when the primary part is unavailable or when design requirements permit functional alternatives.

Substiute Parts

SFC-120-T2-F-D-LC

Samtec Inc.In Stock: 898SFC-120-T2-F-D-LC Datasheet

Current PartRFQ

5-104652-4

TE Connectivity AMP ConnectorsIn Stock: 23295-104652-4 Datasheet

SimilarRFQ

M50-4302045

Harwin Inc.In Stock: 1132M50-4302045 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SFC-120-T2-F-D-LC are qualified based on the following critical parameters that determine functional interchangeability:

Primary Matching Criteria:

• Connector type: Receptacle
• Contact type: Female socket
• Number of positions: 40
• Pitch - mating: 0.050" (1.27mm)
• Number of rows: 2
• Row spacing - mating: 0.050" (1.27mm)
• Mounting type: Surface mount
• Termination: Solder
• Fastening type: Push-Pull
• Insulation material: Liquid Crystal Polymer (LCP)
• Contact shape: Square

The identified substitute parts meet these core electrical and mechanical parameters, enabling direct functional replacement in applications where the SFC-120-T2-F-D-LC is specified. Variations in secondary parameters such as contact finish thickness, insulation height, operating temperature range, and current rating must be evaluated against specific application requirements.

Parameter Comparison

Engineering Selection Recommendations

All three parts—SFC-120-T2-F-D-LC, 5-104652-4, and M50-4302045—are active production components with ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1). Selection between these parts is based on application-specific operating temperature requirements and supply chain availability.

SFC-120-T2-F-D-LC (Samtec): Supports the widest operating temperature range (-55°C to 125°C) and is suitable for applications requiring extended temperature performance. Current rating is specified at 3.1A per contact.

5-104652-4 (TE Connectivity): Operates from -65°C to 105°C with higher inventory availability (2252 units). Current rating is not specified in available documentation. Contact finish thickness on mating surface is 30.0µin (0.76µm), compared to 3.00µin on the primary part.

M50-4302045 (Harwin): Operates from -40°C to 105°C with UL94 V-0 flammability rating. Current rating is specified at 1A per contact. Contact finish on post is gold rather than tin. Suitable for general purpose, medical, and telecommunications applications.

Frequently Asked Questions (FAQ)

Q: Can 5-104652-4 be used as a direct replacement for SFC-120-T2-F-D-LC?

A: Yes, for applications operating within the -65°C to 105°C temperature range. Both connectors share identical pitch (0.050"), position count (40), row configuration (2 rows), mounting type (surface mount), and fastening mechanism (push-pull). Insulation height differs by 0.007" (0.18mm), which is within typical PCB layout tolerances. Verify current requirements do not exceed available specifications.

Q: What are the differences in contact material between these parts?

A: SFC-120-T2-F-D-LC and M50-4302045 use phosphor bronze contacts, while 5-104652-4 uses copper alloy. Both materials are suitable for 0.050" pitch rectangular connectors. Contact finish thickness on the mating surface varies: SFC-120-T2-F-D-LC has 3.00µin gold, while 5-104652-4 has 30.0µin gold.

Q: Which part should be selected for high-temperature applications?

A: SFC-120-T2-F-D-LC supports -55°C to 125°C and is the appropriate choice for applications requiring operation above 105°C. Both substitute parts are limited to 105°C maximum operating temperature.

Q: Are all three parts RoHS compliant?

A: Yes, all three parts are ROHS3 compliant with MSL 1 (unlimited moisture sensitivity). All are classified as EAR99 for export control purposes.

Q: What is the difference in current rating between these connectors?

A: SFC-120-T2-F-D-LC is rated at 3.1A per contact. M50-4302045 is rated at 1A per contact. 5-104652-4 does not specify a current rating in available documentation. Application current requirements must be evaluated against these specifications.

Q: Can M50-4302045 be used in medical applications?

A: M50-4302045 is listed for medical applications. SFC-120-T2-F-D-LC and 5-104652-4 do not specify medical application suitability in available documentation. Confirm application requirements with design specifications.