WNSC051200Q Equivalent & Substitute Parts

Part Overview

The WNSC051200Q is a Silicon Carbide (SiC) Schottky diode rated for 1200 V DC reverse voltage with 5 A average rectified current in a through-hole TO-220AC package. This component is classified as obsolete, which necessitates identification of equivalent substitute parts for ongoing design requirements and procurement needs. The part is RoHS compliant with MSL 1 rating, indicating unlimited moisture sensitivity tolerance.

Substiute Parts

WNSC051200Q

WeEn SemiconductorsIn Stock: 762WNSC051200Q Datasheet

Current PartRFQ

WNSC2D0512006Q

WeEn SemiconductorsIn Stock: 998WNSC2D0512006Q Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the WNSC051200Q is determined by strict equivalence across the following critical parameters:

Mandatory Equivalence Criteria:

• Voltage - DC Reverse (Vr) (Max): 1200 V
• Current - Average Rectified (Io): 5 A
• Mounting Type: Through Hole
• Package / Case: TO-220-2
• Technology: SiC (Silicon Carbide) Schottky

Allowable Parameter Variations:

• Voltage - Forward (Vf) (Max) @ If: Within 1.6 V specification
• Current - Reverse Leakage @ Vr: Equal to or lower than specified value
• Capacitance @ Vr, F: Minor variations acceptable within manufacturing tolerance
• Operating Temperature - Junction: Equal to or exceeding maximum rating
• Product Status: Active status preferred for ongoing availability

The substitute part WNSC2D0512006Q meets all mandatory equivalence criteria and represents an active product offering from the same manufacturer with improved specifications in reverse leakage current and expanded operating temperature range.

Parameter Comparison

Engineering Selection Recommendations

The WNSC2D0512006Q is the direct substitute for the obsolete WNSC051200Q. Selection of this substitute part is based on the following engineering factors:

Product Status: The substitute part carries Active product status, ensuring continued availability and manufacturer support, whereas the main part is classified as Obsolete.

Electrical Equivalence: Both parts maintain identical voltage and current ratings (1200 V, 5 A) with matching forward voltage characteristics, ensuring functional compatibility in existing circuit designs.

Improved Performance: The substitute part demonstrates lower reverse leakage current (25 µA versus 50 µA), resulting in reduced power dissipation and improved efficiency in high-voltage applications.

Compliance: Both parts maintain RoHS compliance and identical ECCN/HTSUS classifications, supporting regulatory and supply chain continuity.

Thermal Capability: The substitute part specifies an expanded operating temperature range (-55°C to 175°C) compared to the main part's maximum-only specification, providing enhanced thermal margin for demanding applications.

Packaging Consistency: Both parts utilize identical TO-220-2 through-hole packaging, enabling direct mechanical and electrical substitution without PCB redesign.

Frequently Asked Questions (FAQ)

Q: Can WNSC2D0512006Q be used as a direct replacement for WNSC051200Q in existing designs?

A: Yes. Both parts share identical voltage ratings (1200 V), current ratings (5 A), forward voltage characteristics (1.6 V @ 5 A), and TO-220-2 package configuration. No circuit modifications are required for substitution.

Q: What is the significance of the lower reverse leakage current in the substitute part?

A: The WNSC2D0512006Q exhibits 25 µA reverse leakage at 1200 V compared to 50 µA in the main part. This reduction decreases standby power dissipation and improves overall circuit efficiency, particularly in applications with extended idle periods.

Q: Are there any thermal performance differences between these parts?

A: The substitute part specifies an operating temperature range of -55°C to 175°C, whereas the main part specifies only a maximum junction temperature of 175°C. This expanded range in the substitute part provides additional thermal margin for cold-start and high-temperature environments.

Q: Does the capacitance difference (250 pF versus 260 pF) affect circuit performance?

A: The capacitance variation of 10 pF (4% difference) falls within standard manufacturing tolerances for SiC Schottky diodes and does not introduce functional incompatibility in typical high-voltage rectification applications.

Q: What is the packaging difference between the main part and substitute?

A: The main part is supplied in standard packaging, while the substitute part is supplied in Tube packaging. Both utilize identical TO-220-2 through-hole configuration, ensuring mechanical and electrical compatibility. Tube packaging provides improved handling and automated assembly compatibility.

Q: Why is the main part classified as Obsolete?

A: Product obsolescence typically results from manufacturer discontinuation decisions. The Active status of the substitute part ensures continued availability and manufacturer technical support for new designs and ongoing production requirements.

Q: Are both parts RoHS compliant?

A: Yes. Both WNSC051200Q and WNSC2D0512006Q maintain RoHS compliance status, supporting environmental and regulatory requirements across global markets.