SFMC-104-03-S-D Equivalent & Substitute Parts

Part Overview

The SFMC-104-03-S-D is an 8-position receptacle connector from Samtec Inc.'s Tiger Eye™ SFMC series, designed for board-to-board or cable applications. This through-hole mounted connector features 0.050" (1.27mm) pitch mating contacts with gold plating and is actively produced. Finding equivalent or substitute parts may be necessary due to inventory constraints, lead time requirements, or specific application needs while maintaining electrical and mechanical compatibility.

Substiute Parts

SFMC-104-03-S-D

Samtec Inc.In Stock: 873SFMC-104-03-S-D Datasheet

Current PartRFQ

SFMC-104-03-S-D

Samtec Inc.In Stock: 873SFMC-104-03-S-D Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution compatibility for the SFMC-104-03-S-D is determined by strict adherence to the following critical parameters:

• Connector Type & Contact Configuration: Receptacle with female socket contacts
• Position Count & Arrangement: 8 positions in 2 rows
• Pitch Specifications: 0.050" (1.27mm) mating pitch and 0.050" (1.27mm) row spacing
• Mounting & Termination: Through-hole solder termination with push-pull fastening
• Contact Materials & Finish: Beryllium copper contacts with gold mating finish (30.0µin) and tin post finish
• Electrical Performance: 2.9A per contact current rating
• Environmental Compliance: UL94 V-0 flammability, RoHS3 compliance, REACH unaffected status
• Operating Range: -55°C to 125°C temperature specification

Only parts matching all these parameters across electrical, mechanical, and compliance dimensions qualify as direct substitutes.

Parameter Comparison

Engineering Selection Recommendations

The SFMC-104-03-S-D maintains active product status with full RoHS3 compliance and REACH unaffected designation, ensuring regulatory alignment for current and future applications. The connector's UL94 V-0 flammability rating supports use in safety-critical environments. Both the main part and its substitute are identical in all electrical, mechanical, and compliance specifications, providing direct interchangeability without design modification or performance degradation. Selection between equivalent units should be based on inventory availability, lead time, and procurement cost considerations.

Frequently Asked Questions (FAQ)

Q: What makes a part a valid substitute for the SFMC-104-03-S-D?

A: A substitute must match all critical parameters: 8-position receptacle configuration, 0.050" (1.27mm) pitch in 2-row arrangement, through-hole solder termination, push-pull fastening, beryllium copper contacts with gold mating finish and tin post finish, 2.9A per contact current rating, -55°C to 125°C operating range, and UL94 V-0 / RoHS3 / REACH compliance status.

Q: Are there any mechanical compatibility concerns when substituting this connector?

A: No mechanical compatibility issues exist between equivalent parts. Both the main part and substitute share identical mounting type (through-hole), insulation height (0.180"), contact length (0.075"), and contact shape (square), ensuring direct PCB footprint compatibility.

Q: Does the gold plating thickness affect substitution eligibility?

A: Yes. The mating contact finish thickness of 30.0µin (0.76µm) is a critical specification. Substitutes must maintain this exact thickness to ensure consistent contact resistance and signal integrity.

Q: What is the significance of the LCP insulation material in substitution decisions?

A: Liquid Crystal Polymer (LCP) insulation provides the specified mechanical and thermal properties. Substitutes must use LCP to maintain the insulation height of 0.180" and ensure compatibility with the -55°C to 125°C operating temperature range.

Q: Can this connector be substituted with a different pitch configuration?

A: No. The 0.050" (1.27mm) mating pitch and 0.050" (1.27mm) row spacing are fundamental to PCB layout and mating interface design. Different pitch configurations are not compatible.

Q: What compliance certifications should I verify when sourcing substitutes?

A: Verify RoHS3 compliance, REACH unaffected status, and UL94 V-0 flammability rating. These certifications are mandatory for regulatory acceptance and environmental compliance.