SD830-B Equivalent & Substitute Parts

Part Overview

The SD830-B is a Schottky rectifier diode manufactured by Diodes Incorporated, rated for 30V DC reverse voltage and 8A average rectified current in a through-hole DO-201AD axial package. This component is classified as obsolete, necessitating identification of equivalent substitute parts for ongoing design requirements and procurement needs. The fast recovery characteristic (≤500ns at >200mA) and low forward voltage drop make this diode suitable for high-frequency rectification applications.

Substiute Parts

SD830-B

Diodes IncorporatedIn Stock: 1219SD830-B Datasheet

Current PartRFQ

SB530

Diotec SemiconductorIn Stock: 5358SB530 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SD830-B is determined by the following critical electrical and mechanical parameters:

Voltage Rating Compatibility: The substitute part must maintain the same 30V DC reverse voltage maximum rating to ensure circuit protection and reliability.

Current Rating Consideration: The SD830-B is rated for 8A average rectified current. The identified substitute, SB530, is rated for 5A. This represents a reduced current capacity and establishes a one-directional substitution relationship: the SB530 is suitable only for applications where the actual circuit current demand does not exceed 5A.

Package and Mounting: Both the main part and substitute utilize through-hole axial mounting in the DO-201 family (DO-201AD for SD830-B; DO-201AA/DO-27 for SB530). Physical compatibility is maintained for PCB mounting.

Recovery Speed: Both parts exhibit fast recovery characteristics (≤500ns at >200mA), preserving high-frequency rectification performance.

Temperature Range: The SD830-B operates from -65°C to 150°C, while the SB530 operates from -50°C to 150°C. The substitute has a narrower low-temperature range.

Product Status: The SD830-B is obsolete; the SB530 is active, ensuring continued availability and supply chain viability.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitution Criterion: The SB530 is a valid substitute for the SD830-B when circuit design specifications permit operation at 5A or below. The matching 30V reverse voltage rating and identical fast recovery speed preserve core rectification functionality.

Current Derating: Applications requiring the full 8A capacity of the SD830-B cannot use the SB530 without circuit redesign or parallel configuration. Verify actual circuit current demand before substitution.

Temperature Consideration: If the application requires operation below -50°C, the SB530 does not meet the temperature specification of the SD830-B. Confirm minimum operating temperature requirements.

Compliance Status: Both parts are ROHS3 compliant, supporting regulatory requirements for restricted substance elimination. The SB530's active product status ensures long-term availability and supply chain continuity compared to the obsolete SD830-B.

Forward Voltage Advantage: The SB530 exhibits lower forward voltage drop (550 mV @ 5A versus 700 mV @ 8A), resulting in reduced power dissipation in applications operating within the 5A current range.

Frequently Asked Questions (FAQ)

Q: Can the SB530 directly replace the SD830-B in all applications?

A: The SB530 is a direct substitute only for applications where the circuit current does not exceed 5A. If the design requires the full 8A capacity of the SD830-B, alternative solutions must be evaluated.

Q: What is the significance of the different forward voltage specifications?

A: The SB530 forward voltage (550 mV @ 5A) is measured at its rated current, while the SD830-B specification (700 mV @ 8A) is measured at its higher rated current. The SB530 exhibits lower forward voltage drop within its operating range, reducing power dissipation and heat generation.

Q: Are the DO-201AD and DO-201AA packages physically interchangeable?

A: Both packages are axial through-hole configurations within the DO-201 family and are physically compatible for PCB mounting. Verify specific PCB footprint requirements with design documentation.

Q: Does the SB530 meet the low-temperature operating range of the SD830-B?

A: No. The SD830-B operates from -65°C to 150°C, while the SB530 operates from -50°C to 150°C. If the application requires operation below -50°C, the SB530 does not meet the specification.

Q: What is the impact of the lower reverse leakage current in the SB530?

A: The SB530 exhibits 500 µA reverse leakage at 30V compared to 1 mA for the SD830-B. Lower leakage current reduces standby power consumption and improves circuit efficiency, particularly in low-power or battery-operated applications.

Q: How does the obsolete status of the SD830-B affect component selection?

A: The SD830-B is no longer manufactured. The SB530, with active product status, ensures continued availability for procurement and future production runs. Substitution is necessary for long-term design sustainability.

Q: Are there any compliance differences between the two parts?

A: Both parts are ROHS3 compliant. The SB530 has REACH information available upon request, while the SD830-B is REACH affected. Verify REACH compliance documentation with the supplier for regulatory requirements specific to your application region.