R6031235ESYA Equivalent & Substitute Parts

Part Overview

The R6031235ESYA is a general-purpose reverse polarity diode rated for 1200 V DC reverse voltage with 350 A average rectified current, manufactured by Powerex Inc. in a DO-205AB stud mount package. This component is designed for chassis-mounted rectification applications requiring high current capacity and reverse polarity protection.

The R6031235ESYA is currently discontinued at DiGi Electronics. Identifying equivalent substitute parts is necessary to maintain design continuity and ensure procurement availability for new production runs and field replacements.

Substiute Parts

R6031235ESYA

Powerex Inc.In Stock: 1062R6031235ESYA Datasheet

Current PartRFQ

VS-400UR120D

Vishay General Semiconductor - Diodes DivisionIn Stock: 1148VS-400UR120D Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the R6031235ESYA is determined by the following critical parameters:

Voltage Rating: The substitute part must maintain the 1200 V DC reverse voltage specification to ensure circuit protection and reliability in the intended application.

Current Capacity: The substitute part must support the 350 A average rectified current minimum. Parts with higher current ratings (400 A or greater) are acceptable as they provide equivalent or superior performance within the same voltage class.

Package and Mounting: The substitute part must use the DO-205AB (DO-9) stud mount package to ensure mechanical and thermal compatibility with existing chassis designs.

Recovery Characteristics: The substitute part must maintain standard recovery speed (>500 ns) and reverse recovery time specifications consistent with general-purpose rectification applications.

Compliance: The substitute part must maintain ROHS3 compliance and equivalent environmental ratings to ensure regulatory and operational continuity.

The VS-400UR120D from Vishay General Semiconductor meets all substitution criteria with equivalent voltage and package specifications, while providing higher current capacity (400 A versus 350 A).

Parameter Comparison

Engineering Selection Recommendations

The VS-400UR120D is a direct substitute for the R6031235ESYA based on the following engineering criteria:

Voltage and Current Ratings: Both parts are rated for 1200 V DC reverse voltage. The VS-400UR120D provides 400 A average rectified current, which exceeds the 350 A requirement of the original part. This higher rating ensures the substitute operates within safe thermal and electrical margins in the application.

Package Compatibility: Both parts use the DO-205AB (DO-9) stud mount package, ensuring mechanical fit and thermal interface compatibility with existing chassis designs without modification.

Regulatory Compliance: Both parts are ROHS3 compliant and carry equivalent environmental certifications, maintaining regulatory continuity for production and field deployment.

Product Availability: The VS-400UR120D is currently active in production with 1048 pieces in stock, providing immediate procurement availability compared to the discontinued R6031235ESYA.

Reverse Leakage Performance: The VS-400UR120D exhibits lower reverse leakage current (15 mA versus 50 mA at 1200 V), indicating superior reverse blocking characteristics and reduced standby power dissipation.

Operating Temperature Range: The VS-400UR120D supports an extended junction temperature range (-40°C to 200°C) compared to the original part (-45°C to 150°C), providing additional thermal margin in high-temperature applications.

Frequently Asked Questions (FAQ)

Q: Can the VS-400UR120D replace the R6031235ESYA in existing designs without circuit modification?

A: Yes. Both parts share identical voltage ratings (1200 V), package type (DO-205AB stud mount), and mounting configuration. The higher current rating of the VS-400UR120D (400 A versus 350 A) does not require circuit changes and operates within the same thermal and electrical envelope.

Q: What is the significance of the higher current rating in the VS-400UR120D?

A: The 400 A rating in the VS-400UR120D provides additional design margin above the 350 A requirement of the original application. This allows the substitute part to operate at lower junction temperatures and with reduced thermal stress during peak current conditions, extending component life and improving reliability.

Q: Are there any differences in forward voltage characteristics between these parts?

A: The forward voltage specifications are measured at different current levels (1.5 V @ 800 A for the original versus 1.62 V @ 1500 A for the substitute). Both parts operate in the same forward voltage class for general-purpose rectification. The substitute's specification at higher current reflects its higher current capacity rating.

Q: Does the lower reverse leakage current in the VS-400UR120D affect circuit operation?

A: The VS-400UR120D exhibits lower reverse leakage (15 mA versus 50 mA at 1200 V), which reduces standby power dissipation and improves circuit efficiency. This is a performance advantage with no negative impact on circuit compatibility.

Q: Are both parts RoHS compliant?

A: Yes. Both the R6031235ESYA and VS-400UR120D are ROHS3 compliant, ensuring regulatory compliance for production and field deployment in restricted substance applications.

Q: What is the moisture sensitivity level for these parts?

A: Both parts carry MSL 1 (Unlimited) rating, indicating no moisture sensitivity restrictions for storage, handling, or assembly processes.

Q: Is the extended operating temperature range of the VS-400UR120D a requirement for substitution?

A: No. The extended temperature range (-40°C to 200°C versus -45°C to 150°C) is an additional performance advantage but not a requirement for substitution. The substitute part operates within the original part's temperature specifications and provides additional margin for high-temperature applications.