STPS2030CT Equivalent & Substitute Parts

Part Overview

The STPS2030CT is a Schottky diode array manufactured by STMicroelectronics, configured as a 1 Pair Common Cathode arrangement rated for 30 V DC reverse voltage and 10 A average rectified current per diode. The device is packaged in a Through Hole TO-220-3 case and features fast recovery characteristics with a maximum forward voltage of 500 mV at 10 A.

The STPS2030CT is classified as Obsolete, which necessitates identification of equivalent and substitute components for ongoing design support and procurement. Substitute parts must maintain electrical compatibility within the specified parameter ranges while considering alternative voltage ratings, current capabilities, and manufacturer availability.

Substiute Parts

STPS2030CT

STMicroelectronicsIn Stock: 1607STPS2030CT Datasheet

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STPS2045CT

STMicroelectronicsIn Stock: 25174STPS2045CT Datasheet

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MBR2030CTLG

onsemiIn Stock: 1680MBR2030CTLG Datasheet

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MBR2035CT

Solid State Inc.In Stock: 2049MBR2035CT Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the STPS2030CT is determined by the following critical parameters:

Configuration Match: The diode configuration (1 Pair Common Cathode) and Schottky technology are primary selection criteria. Substitute parts must maintain the same internal topology to ensure pin compatibility and functional equivalence.

Voltage Rating: The DC reverse voltage (Vr) rating of 30 V establishes the minimum voltage specification. Substitute parts with equal or higher voltage ratings are acceptable, as they provide equivalent or enhanced voltage withstand capability.

Current Rating: The average rectified current (Io) of 10 A per diode is a critical parameter. Substitute parts must support at least 10 A to maintain circuit performance. Parts with higher current ratings are acceptable.

Package Compatibility: The TO-220-3 Through Hole package is mandatory for mechanical and thermal compatibility with existing PCB designs.

Forward Voltage Characteristics: The forward voltage (Vf) at rated current influences power dissipation and circuit efficiency. Substitute parts with comparable or lower Vf values are preferred.

Speed Classification: Fast Recovery characteristics (≤ 500ns, > 200mA) must be maintained for switching applications.

Compliance: RoHS3 compliance and REACH unaffected status are required for regulatory alignment.

Parameter Comparison

Engineering Selection Recommendations

STPS2045CT (MFR Recommended Substitute)

The STPS2045CT is the manufacturer-recommended substitute from STMicroelectronics. This part maintains identical diode configuration (1 Pair Common Cathode), Schottky technology, and TO-220-3 packaging. The STPS2045CT provides enhanced voltage rating (45 V versus 30 V) and improved operating temperature range (175°C maximum junction temperature versus 150°C). The part is currently Active in production status, ensuring long-term availability and supply chain stability. Forward voltage increases to 570 mV at 10 A, representing a 70 mV penalty. Reverse leakage improves to 100 µA at 45 V. RoHS3 compliance and REACH unaffected status are maintained. This substitute is suitable for applications where the higher voltage rating provides design margin without circuit modification.

MBR2030CTLG (Direct Electrical Equivalent)

The MBR2030CTLG from onsemi provides direct electrical equivalence to the STPS2030CT, matching the 30 V voltage rating, 10 A current rating, and 1 Pair Common Cathode configuration. The part is packaged in TO-220-3 and maintains fast recovery characteristics. Forward voltage is 520 mV at 10 A, representing a 20 mV increase. Operating temperature range extends to 175°C maximum junction temperature. The MBR2030CTLG is classified as Last Time Buy, indicating limited future availability. RoHS3 compliance is confirmed. This substitute is appropriate for direct replacement in existing designs where voltage and current specifications are fixed at 30 V and 10 A.

MBR2035CT (Higher Current Alternative)

The MBR2035CT from Solid State Inc. provides enhanced current capability (20 A per diode versus 10 A) and intermediate voltage rating (35 V). The diode configuration differs as 2 Independent versus 1 Pair Common Cathode, which affects pin compatibility and circuit topology. The TO-220-3 package is maintained. This part is Active in production status. The configuration difference requires circuit evaluation before selection. RoHS3 compliance is confirmed; REACH status is vendor undefined. This substitute is suitable only for applications where the 2 Independent configuration is compatible with the circuit design and where the higher current rating provides operational benefit.

Frequently Asked Questions (FAQ)

Q: Can the STPS2045CT directly replace the STPS2030CT in all applications?

A: The STPS2045CT maintains identical diode configuration, Schottky technology, and TO-220-3 packaging. The 45 V voltage rating is compatible with 30 V circuit specifications. However, the forward voltage increases from 500 mV to 570 mV at 10 A, resulting in approximately 7% higher power dissipation. Thermal design and circuit efficiency must be evaluated for applications with tight power budgets.

Q: What is the significance of the diode configuration difference in MBR2035CT?

A: The STPS2030CT features 1 Pair Common Cathode configuration, where two diodes share a common cathode terminal. The MBR2035CT features 2 Independent configuration, where each diode operates independently with separate cathode connections. These configurations have different pin assignments and internal topologies. The MBR2035CT is suitable only if the circuit design accommodates the 2 Independent configuration.

Q: Why is the MBR2030CTLG classified as Last Time Buy?

A: Last Time Buy status indicates that the manufacturer has announced end-of-life for this product. Existing inventory is available for purchase, but no future production is planned. This status affects long-term supply chain planning and should be considered for new designs requiring extended product lifecycle support.

Q: Are all substitute parts RoHS3 compliant?

A: The STPS2045CT and MBR2030CTLG are confirmed RoHS3 compliant. The MBR2035CT is RoHS3 compliant. All substitute parts meet RoHS3 requirements for hazardous substance restrictions.

Q: How does reverse leakage current affect substitute selection?

A: The STPS2030CT specifies 1 mA reverse leakage at 30 V. The STPS2045CT specifies 100 µA at 45 V, representing improved leakage characteristics. The MBR2030CTLG specifies 5 mA at 30 V, representing higher leakage. For applications sensitive to reverse leakage (such as precision analog circuits), the STPS2045CT provides superior performance despite the higher voltage rating.

Q: Is the TO-220-3 package identical across all substitute parts?

A: All substitute parts use the TO-220-3 Through Hole package, ensuring mechanical compatibility with existing PCB designs. Pin assignments differ based on diode configuration (1 Pair Common Cathode versus 2 Independent), requiring verification of circuit connectivity before substitution.

Q: What is the impact of operating temperature range differences?

A: The STPS2030CT specifies 150°C maximum junction temperature. The STPS2045CT and MBR2030CTLG specify 175°C maximum junction temperature. The higher temperature rating in substitute parts provides improved thermal margin and reliability in high-temperature environments. Applications operating near the 150°C limit benefit from substitutes with 175°C ratings.