SD930-T Equivalent & Substitute Parts

Part Overview

The SD930-T is a Schottky rectifier diode manufactured by Diodes Incorporated, rated for 30V DC reverse voltage and 9A 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. Substitute parts must maintain functional compatibility within the specified electrical and mechanical parameters while accommodating available product status and packaging options.

Substiute Parts

SD930-T

Diodes IncorporatedIn Stock: 980SD930-T Datasheet

Current PartRFQ

SBR10U45SP5-13

Diodes IncorporatedIn Stock: 25266SBR10U45SP5-13 Datasheet

DirectRFQ

SB530

Diotec SemiconductorIn Stock: 5358SB530 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SD930-T are identified based on the following critical parameters: reverse voltage rating (Vr), average rectified current (Io), forward voltage characteristics (Vf), recovery speed, and operating temperature range. Substitution validity is determined by whether the candidate part meets or exceeds the electrical specifications of the original component while maintaining functional compatibility.

Two substitute parts are provided:

SBR10U45SP5-13 (Diodes Incorporated): This part exceeds the reverse voltage specification (45V vs. 30V) and current rating (10A vs. 9A). However, it employs Super Barrier technology in a surface-mount PowerDI™ 5 package, representing a technology and form-factor change from the through-hole Schottky design. This substitution requires circuit board redesign for surface-mount compatibility.

SB530 (Diotec Semiconductor): This part maintains the same reverse voltage rating (30V) and Schottky technology with through-hole DO-201 axial packaging, preserving mechanical compatibility. The current rating is reduced to 5A, and forward voltage is specified at 550 mV @ 5A. Operating temperature range is -50°C to 150°C, narrowing the lower temperature limit by 15°C compared to the original part.

Parameter Comparison

Engineering Selection Recommendations

SB530 Selection: The SB530 is the primary substitute for through-hole circuit board designs. It maintains identical reverse voltage specification (30V), Schottky technology, and axial through-hole packaging, enabling direct mechanical substitution without board redesign. The reduced current rating (5A vs. 9A) requires verification that circuit load requirements do not exceed 5A average rectified current. The operating temperature range reduction (-50°C to 150°C vs. -65°C to 150°C) applies only to applications requiring operation below -50°C. Both parts are ROHS3 compliant and carry active product status, ensuring long-term availability.

SBR10U45SP5-13 Selection: This substitute applies only to new designs or redesigned circuits accommodating surface-mount technology. The higher voltage rating (45V) and current capacity (10A) provide design margin beyond the original specification. Super Barrier technology delivers lower reverse leakage current (300 µA @ 45V vs. 800 µA @ 30V). Surface-mount implementation requires circuit board layout modification and assembly process changes. This part maintains active product status and ROHS3 compliance.

Both substitute parts satisfy fast recovery speed requirements (≤ 500ns, > 200mA) and maintain compliance certifications (ROHS3, EAR99 ECCN classification).

Frequently Asked Questions (FAQ)

Q: Can the SB530 directly replace the SD930-T in existing circuit boards?

A: Mechanical substitution is possible due to identical through-hole DO-201 axial packaging. However, the reduced current rating (5A vs. 9A) requires circuit analysis to confirm that average rectified current does not exceed 5A under all operating conditions. If circuit load exceeds 5A, the SB530 is not suitable.

Q: What are the implications of using SBR10U45SP5-13 as a substitute?

A: The SBR10U45SP5-13 requires complete circuit board redesign due to surface-mount PowerDI™ 5 packaging versus through-hole DO-201AD. Assembly processes must accommodate surface-mount soldering. The higher voltage and current ratings provide design margin. This substitution is applicable only to new designs or board revisions.

Q: Does the operating temperature range difference affect substitution with SB530?

A: The SB530 operating range (-50°C to 150°C) is narrower than the SD930-T (-65°C to 150°C) by 15°C at the lower limit. Substitution is valid for applications with minimum operating temperature of -50°C or higher. Applications requiring operation below -50°C cannot use the SB530.

Q: Are all substitute parts RoHS compliant?

A: Yes. Both SBR10U45SP5-13 and SB530 are ROHS3 compliant, matching the compliance status of the SD930-T.

Q: What is the significance of reverse leakage current differences?

A: The SBR10U45SP5-13 exhibits lower reverse leakage (300 µA @ 45V) compared to the SD930-T (800 µA @ 30V), indicating superior leakage characteristics. The SB530 shows intermediate leakage (500 µA @ 30V). Lower reverse leakage reduces power dissipation in reverse-biased conditions and improves circuit efficiency.

Q: Can forward voltage differences impact circuit performance?

A: Forward voltage specifications differ across parts: SD930-T (480 mV @ 9A), SBR10U45SP5-13 (470 mV @ 10A), and SB530 (550 mV @ 5A). Forward voltage affects voltage drop across the diode during conduction. The SB530 exhibits higher forward voltage drop (550 mV vs. 480 mV), resulting in increased power dissipation. Circuit designs sensitive to forward voltage drop require thermal analysis when substituting with SB530.

Q: What inventory considerations apply to these substitutes?

A: The SD930-T is obsolete with 953 units in stock. The SBR10U45SP5-13 is active with 25,200 units available. The SB530 is active with 5,322 units available. Long-term procurement should prioritize active-status parts (SBR10U45SP5-13 or SB530) to ensure sustained availability.