STPS4030CT Equivalent & Substitute Parts

Part Overview

The STPS4030CT is a Schottky diode array manufactured by STMicroelectronics, configured as a 1 Pair Common Cathode arrangement with a 30 V DC reverse voltage rating and 20 A average rectified current per diode. The device is packaged in a Through Hole TO-220-3 case and features fast recovery characteristics suitable for high-frequency switching applications.

The STPS4030CT is classified as Obsolete, necessitating identification of equivalent and substitute components for ongoing design support and procurement. Substitute parts must maintain electrical compatibility across critical parameters including reverse voltage rating, diode configuration, technology type, and mounting methodology.

Substiute Parts

STPS4030CT

STMicroelectronicsIn Stock: 4099STPS4030CT Datasheet

Current PartRFQ

MBR4030CT

SMC Diode SolutionsIn Stock: 1650MBR4030CT Datasheet

DirectRFQ

MBR2030CTLG

onsemiIn Stock: 1680MBR2030CTLG Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the STPS4030CT is determined by strict adherence to the following electrical and mechanical parameters:

Primary Substitution Criteria:

• Diode Configuration: 1 Pair Common Cathode (mandatory match)
• Technology: Schottky (mandatory match)
• Voltage - DC Reverse (Vr) (Max): 30 V (mandatory match)
• Mounting Type: Through Hole (mandatory match)
• Package / Case: TO-220-3 (mandatory match)
• Speed: Fast Recovery ≤ 500ns, > 200mA (Io) (mandatory match)

Secondary Compatibility Parameters:

• Current - Average Rectified (Io) (per Diode): Equal to or greater than 20 A
• Voltage - Forward (Vf) (Max) @ If: Within acceptable operating range
• Current - Reverse Leakage @ Vr: Within acceptable operating range
• Operating Temperature - Junction: Suitable for application requirements
• RoHS Status: ROHS3 Compliant (preferred)

Substitute parts are classified as Direct or Similar based on alignment with these criteria. Direct substitutes maintain all primary criteria with equivalent or superior secondary parameters. Similar substitutes maintain all primary criteria but may have reduced current ratings or modified thermal characteristics.

Parameter Comparison

Engineering Selection Recommendations

MBR4030CT (Direct Substitute): The MBR4030CT manufactured by SMC Diode Solutions is classified as a Direct substitute for the STPS4030CT. This part maintains all primary substitution criteria including 1 Pair Common Cathode configuration, Schottky technology, 30 V reverse voltage rating, Through Hole mounting, and TO-220-3 packaging. The MBR4030CT is currently in Active product status, ensuring long-term availability and supply chain continuity. The device is ROHS3 Compliant and carries EAR99 classification. Forward voltage specification of 550 mV @ 20 A represents a 60 mV increase relative to the main part, which is within acceptable operating margins for most applications. The MBR4030CT is the preferred substitute for new designs and ongoing production requiring direct electrical and mechanical compatibility.

MBR2030CTLG (Similar Substitute): The MBR2030CTLG manufactured by onsemi is classified as a Similar substitute for the STPS4030CT. This part maintains all primary substitution criteria but carries a reduced current rating of 10 A per diode compared to the 20 A specification of the main part. The MBR2030CTLG is designated Last Time Buy, indicating limited future availability. The device is ROHS3 Compliant and carries EAR99 classification. Operating temperature range extends to -65°C ~ 175°C, providing superior thermal performance relative to the main part. Forward voltage specification of 520 mV @ 10 A and reverse leakage of 5 mA @ 30 V represent acceptable deviations within the Similar substitute category. The MBR2030CTLG is suitable for applications where current requirements do not exceed 10 A per diode and where Last Time Buy status is acceptable for procurement planning.

Frequently Asked Questions (FAQ)

Q: Can the MBR4030CT be used as a direct replacement for the STPS4030CT in all applications?

A: The MBR4030CT maintains electrical and mechanical compatibility across all primary substitution criteria. Forward voltage increases from 490 mV to 550 mV at 20 A, which represents a 12.2% increase. Applications must tolerate this voltage differential without performance degradation. Thermal management and circuit design should be verified for the specific application context.

Q: What is the significance of the MBR2030CTLG current rating of 10 A versus the STPS4030CT rating of 20 A?

A: The MBR2030CTLG is rated for 10 A average rectified current per diode, which is 50% of the STPS4030CT specification. This part is suitable only for applications where the actual operating current does not exceed 10 A per diode. Applications requiring the full 20 A capability must use the MBR4030CT or equivalent higher-current-rated devices.

Q: Are all substitute parts packaged identically to the STPS4030CT?

A: All substitute parts listed maintain the TO-220-3 package configuration and Through Hole mounting type. The MBR4030CT is supplied in Tube packaging, while the MBR2030CTLG is also supplied in Tube packaging. The STPS4030CT packaging specification was not provided in the input data. Mechanical fit and thermal interface characteristics should be verified for the specific application.

Q: What is the difference between Direct and Similar substitutes?

A: Direct substitutes maintain all primary electrical and mechanical criteria with equivalent or superior secondary parameters. The MBR4030CT is classified as Direct because it maintains the 20 A current rating and all other primary specifications. Similar substitutes maintain all primary criteria but have reduced current ratings or modified thermal characteristics. The MBR2030CTLG is classified as Similar due to its 10 A current limitation.

Q: Are there compliance or regulatory differences between the substitute parts?

A: All parts listed are ROHS3 Compliant and carry EAR99 ECCN classification. The MBR4030CT is REACH Affected, while the STPS4030CT and MBR2030CTLG are REACH Unaffected. Applications subject to REACH regulations should account for this distinction during component selection.

Q: What is the product status significance for long-term procurement?

A: The STPS4030CT is Obsolete, indicating no further manufacturing or support. The MBR4030CT is Active, ensuring continued availability and supply chain support. The MBR2030CTLG is Last Time Buy, indicating limited future availability with a defined end-of-life date. For new designs and long-term production, the MBR4030CT is the recommended choice based on active product status.