SMC321 Equivalent & Substitute Parts

Part Overview

The SMC321 is a ballast control IC manufactured by onsemi, classified as a Power Management (PMIC) component. This controller is designed for ballast applications and operates as an integrated circuit solution for lighting control systems. The SMC321 has reached obsolete product status, making it necessary to identify functionally equivalent alternatives for ongoing design requirements and component procurement.

Substiute Parts

SMC321

onsemiIn Stock: 2531SMC321 Datasheet

Current PartRFQ

FAN7711MX

onsemiIn Stock: 26110FAN7711MX Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

The FAN7711MX has been identified as a substitute for the SMC321 based on the following substitution criteria:

• Functional Category: Both components are ballast control ICs within the Power Management (PMIC) classification
• Manufacturer Alignment: Both are manufactured by onsemi, ensuring design consistency and supply chain continuity
• Application Domain: Both are designed for ballast controller applications
• Regulatory Compliance: Both maintain ROHS3 compliance and REACH unaffected status, meeting current environmental and regulatory requirements
• Product Availability: The FAN7711MX maintains active product status with substantial inventory availability, providing long-term supply security

Parameter Comparison

Engineering Selection Recommendations

The FAN7711MX is the designated substitute for the obsolete SMC321. Selection of this alternative is supported by:

• Product Status Transition: The SMC321 obsolete status necessitates component replacement. The FAN7711MX active product status ensures continued availability and manufacturer support
• Regulatory Compliance Continuity: Both components maintain identical ROHS3 and REACH compliance certifications, eliminating regulatory re-qualification requirements
• Manufacturer Consistency: Procurement from the same manufacturer (onsemi) maintains design integrity and supply chain efficiency
• Functional Equivalence: Both components serve ballast control applications within the Power Management (PMIC) category

Frequently Asked Questions (FAQ)

Q: Why is the SMC321 no longer available? A: The SMC321 has reached obsolete product status. onsemi has discontinued this component, making the FAN7711MX the active equivalent for ballast control applications.

Q: Are the SMC321 and FAN7711MX functionally equivalent? A: Both components are ballast control ICs manufactured by onsemi within the Power Management (PMIC) category. The FAN7711MX is designated as the substitute for the obsolete SMC321.

Q: What are the package differences between these components? A: The FAN7711MX is specified in 8-SOIC (0.154", 3.90mm Width) surface mount packaging with Cut Tape (CT) and Digi-Reel® options. The SMC321 packaging specifications are not provided in the technical documentation.

Q: Do both components meet current environmental standards? A: Yes. Both the SMC321 and FAN7711MX are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements.

Q: What is the Moisture Sensitivity Level (MSL) difference? A: The FAN7711MX has an MSL rating of 1 (Unlimited), indicating no moisture sensitivity restrictions. The SMC321 MSL is vendor undefined.

Q: Is there inventory availability for the FAN7711MX? A: Yes. The FAN7711MX has 26,100 pieces of new original stock available, providing adequate supply for component procurement and design implementation.