HS1KFL Equivalent & Substitute Parts

Part Overview

The HS1KFL is a general-purpose rectifier diode manufactured by Taiwan Semiconductor Corporation, rated for 800 V DC reverse voltage and 1 A average rectified current in a surface mount SOD-123F package. This component is classified as Active product status and is RoHS3 compliant with unlimited moisture sensitivity level (MSL 1).

Substitute parts are identified when equivalent electrical performance and mechanical compatibility are required due to inventory constraints, supply chain considerations, or design flexibility needs. The HS1KFL maintains active production status, while identified substitutes may have different lifecycle positions or additional qualifications.

Substiute Parts

HS1KFL

Taiwan Semiconductor CorporationIn Stock: 7692HS1KFL Datasheet

Current PartRFQ

NRVUS1KFA

onsemiIn Stock: 35242NRVUS1KFA Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the HS1KFL is determined by strict equivalence across the following electrical and mechanical parameters:

Critical Matching Parameters:

• Voltage - DC Reverse (Vr) (Max): 800 V
• Current - Average Rectified (Io): 1 A
• Voltage - Forward (Vf) (Max) @ If: 1.7 V @ 1 A
• Reverse Recovery Time (trr): 75 ns
• Current - Reverse Leakage @ Vr: 5 µA @ 800 V
• Speed Classification: Fast Recovery ≤ 500ns, > 200mA (Io)
• Package / Case: SOD-123F
• Mounting Type: Surface Mount
• Operating Temperature - Junction: -55°C to 150°C
• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level (MSL): 1 (Unlimited)

The NRVUS1KFA meets all critical electrical parameters and mechanical compatibility requirements. Differences in capacitance specification and product lifecycle status do not affect functional substitution within the defined electrical operating envelope.

Parameter Comparison

Engineering Selection Recommendations

HS1KFL Selection Criteria: The HS1KFL is the primary choice for new designs due to its Active product status. This component is in full production and supported for ongoing development cycles. It provides standard-grade performance with full RoHS3 compliance and unlimited moisture sensitivity level.

NRVUS1KFA Selection Criteria: The NRVUS1KFA is electrically and mechanically equivalent to the HS1KFL across all critical operating parameters. However, this part carries a "Not For New Designs" product status designation. The NRVUS1KFA includes Automotive grade classification and AEC-Q101 qualification, making it suitable for applications requiring automotive-level reliability and traceability. The higher capacitance specification (15 pF versus 6 pF) may introduce circuit behavior differences in high-frequency or sensitive timing applications.

Selection between these parts depends on design phase and application requirements. Active production status favors HS1KFL for new development. Automotive qualification and existing inventory levels may justify NRVUS1KFA use in established production environments where design validation has been completed.

Frequently Asked Questions (FAQ)

Q: Can NRVUS1KFA be used as a direct replacement for HS1KFL in existing designs?

A: The NRVUS1KFA meets all critical electrical specifications (800 V reverse voltage, 1 A current rating, 1.7 V forward voltage, 75 ns recovery time) and uses the same SOD-123F surface mount package. Functional substitution is supported within the defined electrical operating envelope. The capacitance difference (15 pF versus 6 pF) must be evaluated for circuit-specific timing or frequency response requirements.

Q: What is the significance of the "Not For New Designs" status on NRVUS1KFA?

A: "Not For New Designs" indicates that onsemi is not recommending this part for new product development. Existing designs already using this component may continue production, but new designs should prioritize the HS1KFL or other actively supported alternatives. This status reflects manufacturer lifecycle management and does not indicate functional deficiency.

Q: Are there package compatibility concerns between HS1KFL and NRVUS1KFA?

A: Both parts use the SOD-123F surface mount package with identical mechanical dimensions and land pattern requirements. PCB layout and assembly processes require no modification for substitution. The supplier device package designation differs slightly (SOD-123F versus SOD-123FL), but both conform to the same physical and electrical interface standard.

Q: How does the capacitance difference affect circuit performance?

A: The NRVUS1KFA specifies 15 pF capacitance at 4 V, 1 MHz, compared to 6 pF for the HS1KFL. This difference may affect high-frequency circuit behavior, switching transient response, and EMI characteristics. Circuit-level analysis is required if the design operates near the frequency limits of the diode or includes sensitive timing-dependent functions.

Q: What compliance and qualification differences exist between these parts?

A: Both parts are RoHS3 compliant with MSL 1 (unlimited moisture sensitivity). The NRVUS1KFA includes Automotive grade classification and AEC-Q101 qualification, indicating enhanced reliability screening and traceability for automotive applications. The HS1KFL carries standard-grade classification without automotive qualification.

Q: Is inventory availability a factor in part selection?

A: Inventory levels are provided for reference only and do not determine substitution eligibility. The HS1KFL has 7,659 pieces in stock, while NRVUS1KFA has 35,200 pieces available. Substitution decisions must be based on design requirements, product status, and compliance needs rather than inventory position.