VS-45LR10 Equivalent & Substitute Parts Reference

Part Overview

The VS-45LR10 is a general-purpose reverse polarity diode manufactured by Vishay General Semiconductor - Diodes Division, rated for 100 V DC reverse voltage and 150 A average rectified current in a DO-205AC (DO-30) stud mount package. This component is classified as obsolete, necessitating identification of active equivalent parts for ongoing design requirements and procurement continuity. The standard recovery speed (>500ns) and reverse polarity technology define its operational characteristics within power rectification applications.

Substiute Parts

VS-45LR10

Vishay General Semiconductor - Diodes DivisionIn Stock: 958VS-45LR10 Datasheet

Current PartRFQ

VS-150UR60D

Vishay General Semiconductor - Diodes DivisionIn Stock: 949VS-150UR60D Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the VS-45LR10 is determined by the following critical parameters:

Current Rating Compatibility: The substitute part must maintain the 150 A average rectified current specification to ensure equivalent thermal and electrical performance in the application circuit.

Voltage Rating Consideration: While the VS-45LR10 specifies 100 V DC reverse voltage, substitute parts may operate at higher voltage ratings. A higher voltage rating does not prevent substitution in applications designed for 100 V operation, as the component will operate within its safe operating area.

Mounting Configuration: Both the main part and substitute must employ stud mount technology to ensure mechanical compatibility with existing chassis and thermal management infrastructure.

Recovery Speed Classification: The VS-45LR10 operates as a standard recovery diode (>500ns). Substitute parts with faster recovery characteristics (≤500ns) are electrically compatible and may provide improved performance in switching applications.

Package Compatibility: The DO-205AC and DO-205AA packages are both stud mount configurations suitable for high-current applications. These packages are mechanically and thermally interchangeable in standard mounting configurations.

Compliance Requirements: Both parts maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory continuity.

Parameter Comparison

Engineering Selection Recommendations

The VS-150UR60D serves as the manufacturer-recommended substitute for the obsolete VS-45LR10. Selection of this substitute is based on the following engineering criteria:

Current Rating Equivalence: Both parts are rated for 150 A average rectified current, ensuring identical current-handling capability in the application circuit.

Voltage Margin: The VS-150UR60D's 600 V rating provides a 6:1 safety margin relative to the VS-45LR10's 100 V specification. This elevated voltage rating does not compromise performance in 100 V applications and may enhance reliability in transient overvoltage conditions.

Active Product Status: The VS-150UR60D is classified as active, ensuring long-term availability, manufacturing continuity, and technical support from Vishay General Semiconductor - Diodes Division.

Regulatory Compliance: Both parts maintain ROHS3 compliance and REACH unaffected status, satisfying current environmental and regulatory requirements without design modification.

Recovery Speed Enhancement: The VS-150UR60D's fast recovery characteristic (≤500ns) compared to the VS-45LR10's standard recovery (>500ns) provides improved switching performance and reduced reverse recovery losses in applications operating above 200 mA.

Thermal Consideration: The VS-150UR60D operates to a maximum junction temperature of 180°C, compared to 200°C for the VS-45LR10. Thermal design verification is required for applications operating near the upper temperature limit of the original specification.

Frequently Asked Questions (FAQ)

Q: Can the VS-150UR60D directly replace the VS-45LR10 in existing designs?

A: Yes. The VS-150UR60D maintains the 150 A current rating and stud mount configuration required for mechanical and electrical compatibility. The higher voltage rating (600 V vs. 100 V) does not prevent substitution in applications designed for 100 V operation.

Q: What is the significance of the voltage rating difference between these parts?

A: The VS-150UR60D's 600 V rating indicates the maximum reverse voltage the component can withstand without breakdown. In applications operating at 100 V, the substitute operates well within its safe operating area, providing additional margin against transient overvoltages.

Q: How does the recovery speed difference affect circuit performance?

A: The VS-150UR60D's fast recovery characteristic (≤500ns) reduces reverse recovery time compared to the VS-45LR10's standard recovery (>500ns). This results in lower reverse recovery losses and improved efficiency in switching applications, particularly at higher switching frequencies.

Q: Are there thermal management differences between these parts?

A: The VS-150UR60D specifies a maximum junction temperature of 180°C, compared to 200°C for the VS-45LR10. Thermal design calculations should verify that the application's thermal environment maintains junction temperature within the 180°C limit of the substitute part.

Q: Do both parts meet current regulatory requirements?

A: Yes. Both the VS-45LR10 and VS-150UR60D are ROHS3 compliant and REACH unaffected, satisfying current environmental and regulatory standards without design modification.

Q: What is the difference between the DO-205AC and DO-205AA packages?

A: Both packages are stud mount configurations designed for high-current applications. The DO-205AC (DO-30) and DO-205AA (DO-8) designations reflect different package geometries, but both support identical stud mount mechanical interfaces and thermal management approaches.

Q: Is the forward voltage difference between these parts significant?

A: The VS-150UR60D specifies a maximum forward voltage of 1.47 V at 600 A, compared to 1.33 V at 471 A for the VS-45LR10. The forward voltage difference reflects different measurement conditions and device characteristics. Circuit designs should account for this variation in power dissipation calculations.