VSKC320-12 Equivalent & Substitute Parts

Part Overview

The VSKC320-12 is a general-purpose diode module manufactured by Vishay General Semiconductor - Diodes Division, rated for 1200V DC reverse voltage with 320A average rectified current per diode. This component features a 1 Pair Common Cathode configuration in a 3-MAGN-A-PAK™ chassis mount package.

The VSKC320-12 is classified as obsolete. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for applications utilizing this diode module.

Substiute Parts

VSKC320-12

Vishay General Semiconductor - Diodes DivisionIn Stock: 932VSKC320-12 Datasheet

Current PartRFQ

APTDF400KK120G

Microchip TechnologyIn Stock: 1012APTDF400KK120G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the VSKC320-12 is determined by the following critical parameters:

Voltage Rating Compatibility: The substitute part must maintain the 1200V DC reverse voltage rating to ensure safe operation within the original circuit design envelope.

Diode Configuration: The substitute must preserve the 1 Pair Common Cathode configuration to maintain electrical connectivity and circuit topology compatibility.

Mounting Type: Chassis mount configuration must be retained to ensure mechanical fit and thermal management characteristics.

Current Rating: The substitute part must support a current rating equal to or greater than 320A average rectified current per diode to handle the design load without derating.

Regulatory Compliance: The substitute must maintain ROHS3 compliance and REACH unaffected status to satisfy supply chain and environmental requirements.

The APTDF400KK120G meets all substitution criteria while offering enhanced performance characteristics within the allowed parameter set.

Parameter Comparison

Engineering Selection Recommendations

The APTDF400KK120G is a direct substitute for the VSKC320-12 based on the following engineering criteria:

Voltage and Configuration Match: Both parts maintain identical 1200V DC reverse voltage rating and 1 Pair Common Cathode configuration, ensuring circuit compatibility without redesign.

Current Capacity: The APTDF400KK120G provides 470A average rectified current per diode, exceeding the original 320A requirement. This higher current rating provides operational margin within the same voltage class.

Regulatory Compliance: Both parts are ROHS3 compliant and REACH unaffected, satisfying environmental and supply chain requirements.

Product Availability: The APTDF400KK120G is classified as active product status, ensuring long-term supply chain availability compared to the obsolete VSKC320-12.

Mechanical Compatibility: Both parts utilize chassis mount configuration, maintaining thermal management and mechanical integration with existing designs.

Frequently Asked Questions (FAQ)

Q: Can the APTDF400KK120G directly replace the VSKC320-12 in existing designs?

A: Yes. Both parts share identical voltage rating (1200V), diode configuration (1 Pair Common Cathode), and mounting type (Chassis Mount). The APTDF400KK120G provides higher current capacity (470A vs 320A), which is compatible with designs rated for the original 320A specification.

Q: What is the difference in package between these parts?

A: The VSKC320-12 uses 3-MAGN-A-PAK™ packaging, while the APTDF400KK120G uses LP4 packaging with SP6 supplier device package designation. Physical dimensions and mounting interfaces differ between these packages and must be verified for mechanical fit in the target application.

Q: Why does the APTDF400KK120G have lower reverse leakage current?

A: The APTDF400KK120G specifies 250 µA @ 1200V compared to 50 mA @ 1200V for the VSKC320-12. This represents improved leakage characteristics in the substitute part and does not affect substitution compatibility.

Q: What is the significance of the recovery speed difference?

A: The VSKC320-12 uses Standard Recovery (>500ns), while the APTDF400KK120G uses Fast Recovery (≤500ns). Fast recovery characteristics reduce switching losses and improve efficiency in high-frequency applications. This enhancement is compatible with designs originally specified for standard recovery diodes.

Q: Are both parts compliant with current environmental regulations?

A: Yes. Both the VSKC320-12 and APTDF400KK120G are ROHS3 compliant and REACH unaffected, meeting current environmental and supply chain requirements.