SDP20S30 Equivalent & Substitute Parts Reference

Part Overview

The SDP20S30 is a Silicon Carbide (SiC) Schottky diode array manufactured by Infineon Technologies, configured as a 1 Pair Common Cathode arrangement rated for 300 V DC reverse voltage and 10 A average rectified current per diode. The device is packaged in TO-220-3 through-hole configuration and operates across a junction temperature range of -55°C to 175°C.

The SDP20S30 carries an Obsolete product status. Identification of functionally equivalent substitute components is necessary to maintain design continuity and ensure component availability for new production builds and field replacements.

Substiute Parts

SDP20S30

Infineon TechnologiesIn Stock: 1995SDP20S30 Datasheet

Current PartRFQ

SBR40U300CT

Diodes IncorporatedIn Stock: 1499SBR40U300CT Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SDP20S30 is determined by the following critical parameters that must remain constant or compatible:

Fixed Requirements:

• Diode Configuration: 1 Pair Common Cathode (pin-compatible)
• Package / Case: TO-220-3 (mechanical and thermal compatibility)
• Voltage - DC Reverse (Vr) (Max): 300 V (circuit voltage rating)
• Mounting Type: Through Hole (assembly compatibility)

Performance Parameters (Allowable Variation):

• Current - Average Rectified (Io): Substitute must equal or exceed 10 A per diode
• Voltage - Forward (Vf): Substitute forward voltage must not exceed application requirements
• Reverse Recovery Time (trr): Substitute recovery characteristics must be compatible with circuit switching requirements
• Current - Reverse Leakage @ Vr: Substitute leakage must not exceed application limits
• Operating Temperature - Junction: Substitute range must encompass or exceed -55°C to 175°C

The SBR40U300CT from Diodes Incorporated meets all fixed requirements and provides enhanced performance in current rating and recovery characteristics.

Parameter Comparison

Engineering Selection Recommendations

SBR40U300CT (Diodes Incorporated) - Primary Substitute

The SBR40U300CT is the manufacturer-recommended substitute for the obsolete SDP20S30. This device maintains identical pin configuration and package form factor, ensuring direct mechanical and electrical compatibility in TO-220-3 through-hole applications.

The SBR40U300CT provides performance enhancements over the original SDP20S30:

• Current rating of 20 A per diode exceeds the 10 A requirement, providing design margin
• Forward voltage of 890 mV at 20 A is lower than the SDP20S30 specification, reducing power dissipation
• Reverse leakage of 100 µA at 300 V is lower than the SDP20S30, improving circuit efficiency
• Operating temperature range extends to -65°C, providing enhanced low-temperature performance

The SBR40U300CT carries Active product status and holds RoHS3 compliance certification, ensuring long-term availability and regulatory alignment. Both devices maintain identical REACH Unaffected and EAR99 ECCN classifications.

Frequently Asked Questions (FAQ)

Q: Can the SBR40U300CT directly replace the SDP20S30 in existing designs?

A: Yes. Both devices share identical TO-220-3 package configuration and 1 Pair Common Cathode pin arrangement. No PCB modifications or circuit redesign is required for mechanical and electrical compatibility.

Q: What are the key differences between these devices?

A: The SBR40U300CT provides higher current capacity (20 A vs. 10 A), lower forward voltage drop (890 mV vs. 1.7 V at rated current), and lower reverse leakage current (100 µA vs. 200 µA). The SDP20S30 features zero reverse recovery time characteristic of SiC Schottky technology, while the SBR40U300CT exhibits 50 ns recovery time typical of Super Barrier technology.

Q: Are there thermal considerations when substituting these devices?

A: Both devices operate across -55°C to 175°C junction temperature range (SBR40U300CT extends to -65°C minimum). The SBR40U300CT's lower forward voltage generates less heat at equivalent current levels, potentially improving thermal performance in power-limited applications.

Q: What is the inventory status for these parts?

A: The SDP20S30 is Obsolete with 1950 pieces in stock. The SBR40U300CT is Active with 1413 pieces in stock, ensuring continued availability for new designs and field replacements.

Q: Are compliance certifications equivalent between these devices?

A: Both devices maintain REACH Unaffected status and EAR99 ECCN classification. The SBR40U300CT additionally holds RoHS3 compliance certification, meeting current regulatory requirements for electronic components.