DSA2-16A Equivalent & Substitute Parts

Part Overview

The DSA2-16A is an avalanche diode manufactured by IXYS, rated for 1600 V DC reverse voltage with 3.6 A average rectified current. This component is designed for through-hole axial mounting and operates across a junction temperature range of -40°C to 180°C. The part is classified as obsolete, necessitating identification of active equivalent components for continued system design and maintenance applications. Substitute parts must maintain functional compatibility within the specified electrical and mechanical parameters.

Substiute Parts

DSA2-16A

IXYSIn Stock: 2367DSA2-16A Datasheet

Current PartRFQ

BY228TR

Vishay General Semiconductor - Diodes DivisionIn Stock: 13666BY228TR Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the DSA2-16A is determined by the following critical parameters:

Voltage Rating: The substitute part must support a DC reverse voltage (Vr) rating equal to or greater than 1600 V to maintain system protection and reliability in the intended application.

Current Rating: The substitute part must support an average rectified current (Io) equal to or greater than 3.6 A to handle the specified load conditions.

Technology: The substitute part must utilize avalanche diode technology to ensure equivalent transient suppression and voltage regulation characteristics.

Recovery Speed: The substitute part must maintain standard recovery characteristics (>500ns, >200mA) to preserve circuit timing and performance.

Mounting Configuration: The substitute part must support through-hole mounting to ensure mechanical compatibility with existing PCB designs.

Compliance: The substitute part must maintain ROHS3 compliance and REACH unaffected status to satisfy regulatory requirements.

The BY228TR meets the specified criteria with a 1500 V rating and 3 A current capacity. While these values are lower than the DSA2-16A, they remain within acceptable substitution parameters for applications where the full 1600 V and 3.6 A ratings are not required. The BY228TR maintains avalanche technology, standard recovery speed, through-hole mounting, and equivalent compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

The DSA2-16A is classified as obsolete, making the BY228TR the identified active substitute. Selection of the BY228TR is appropriate for applications where the following conditions are satisfied:

Voltage Margin: The application operates at voltages below 1500 V DC reverse. The 100 V reduction from the DSA2-16A rating must be evaluated against system transient conditions and safety margins.

Current Margin: The application requires current handling below 3 A average rectified. The 0.6 A reduction from the DSA2-16A rating must be evaluated against load conditions and thermal management.

Temperature Operating Range: The application operates within the BY228TR maximum junction temperature of 140°C. The DSA2-16A supports operation to 180°C; applications requiring higher temperature operation require alternative substitutes.

Compliance Requirements: Both parts maintain ROHS3 compliance and REACH unaffected status, satisfying regulatory requirements for new designs and replacements.

Product Availability: The BY228TR is active and maintains inventory availability (13,624 pcs), ensuring supply chain continuity compared to the obsolete DSA2-16A.

Frequently Asked Questions (FAQ)

Q: Can the BY228TR directly replace the DSA2-16A in all applications?

A: The BY228TR is a functional substitute only for applications where the voltage and current requirements do not exceed 1500 V and 3 A respectively. Applications requiring the full 1600 V or 3.6 A ratings of the DSA2-16A require alternative substitutes with higher ratings.

Q: What is the significance of the package difference between Axial (DSA2-16A) and SOD-64 (BY228TR)?

A: Both parts support through-hole mounting and axial configuration. The SOD-64 designation indicates the physical package form factor. PCB layout compatibility must be verified to ensure the substitute package dimensions accommodate existing mounting holes and clearances.

Q: How does the operating temperature range affect substitution?

A: The DSA2-16A supports junction temperatures to 180°C, while the BY228TR supports temperatures to 140°C maximum. Applications operating above 140°C junction temperature require alternative substitutes rated for higher temperatures.

Q: What is the impact of the reverse leakage current difference?

A: The DSA2-16A specifies 2 mA reverse leakage at 1600 V, while the BY228TR specifies 5 µA at 1500 V. The BY228TR exhibits lower leakage current, which may improve circuit performance in applications sensitive to leakage. This difference does not prevent substitution.

Q: Are both parts compliant with current regulatory standards?

A: Both the DSA2-16A and BY228TR maintain ROHS3 compliance and REACH unaffected status, satisfying current regulatory requirements for electronic components in most jurisdictions.

Q: What forward voltage difference exists between these parts?

A: The DSA2-16A specifies 1.25 V forward voltage at 7 A, while the BY228TR specifies 1.5 V at 5 A. The BY228TR exhibits higher forward voltage drop. Applications sensitive to power dissipation or voltage drop must account for this 0.25 V difference.