STK554U394A-E Equivalent & Substitute Parts

Part Overview

The STK554U394A-E is a motor driver integrated circuit manufactured by onsemi, classified as a Power Management (PMIC) component. This part is currently obsolete, which necessitates identification of functionally equivalent alternatives for ongoing design requirements and component sourcing. The motor driver function requires substitutes that maintain compatible electrical characteristics and packaging specifications to ensure system-level performance continuity.

Substiute Parts

STK554U394A-E

onsemiIn Stock: 2185STK554U394A-E Datasheet

Current PartRFQ

NFAQ1560R43T

onsemiIn Stock: 1349NFAQ1560R43T Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The substitute part NFAQ1560R43T is identified as a manufacturer-recommended alternative based on the following substitution criteria:

Electrical Compatibility Parameters:

• Power management and motor drive functionality
• Voltage rating: 600 V
• Current capacity: 15 A
• Isolation voltage: 2000 Vrms

Mechanical & Packaging Compatibility:

• Through-hole mounting type
• 38-PowerDIP Module package with 24 leads (0.610", 24.00mm)

Compliance & Regulatory Alignment:

• ROHS3 Compliant
• REACH Unaffected
• ECCN: EAR99
• HTSUS Code: 8542.39.0001 (identical classification)

The NFAQ1560R43T represents an active product with current manufacturing status, providing long-term availability compared to the obsolete STK554U394A-E.

Parameter Comparison

Engineering Selection Recommendations

The NFAQ1560R43T is the manufacturer-recommended substitute for the obsolete STK554U394A-E. Both components share identical regulatory compliance classifications (ROHS3, REACH Unaffected, EAR99, HTSUS 8542.39.0001), ensuring equivalent environmental and trade compliance status.

The NFAQ1560R43T maintains active product status with current manufacturing support from onsemi, eliminating supply chain risk associated with obsolete components. The specified electrical parameters (600 V, 15 A, 2000 Vrms isolation) and through-hole PowerDIP packaging provide the motor driver functionality required for direct substitution in existing designs.

Frequently Asked Questions (FAQ)

Q: Why is the STK554U394A-E being replaced? A: The STK554U394A-E is classified as obsolete. The NFAQ1560R43T is the manufacturer-recommended active alternative that maintains functional and compliance equivalence.

Q: Are the electrical specifications compatible between these parts? A: The NFAQ1560R43T provides 600 V, 15 A motor drive capability with 2000 Vrms isolation. Compatibility depends on your specific circuit requirements matching these electrical parameters.

Q: What is the package difference? A: The NFAQ1560R43T uses a 38-PowerDIP Module package with 24 leads (0.610", 24.00mm) in through-hole mounting configuration. Verify your PCB layout accommodates this package geometry.

Q: Are both parts RoHS and REACH compliant? A: Yes. Both the STK554U394A-E and NFAQ1560R43T are ROHS3 Compliant and REACH Unaffected, with identical ECCN (EAR99) and HTSUS (8542.39.0001) classifications.

Q: What is the moisture sensitivity level of the substitute? A: The NFAQ1560R43T has a Moisture Sensitivity Level classification of Not Applicable, indicating no moisture-related handling restrictions for this module package type.

Q: Is the NFAQ1560R43T currently available? A: Yes. The NFAQ1560R43T is an active product with current manufacturing status and documented inventory availability.