STPS3030CT Equivalent & Substitute Parts

Part Overview

The STPS3030CT is a Schottky diode array manufactured by STMicroelectronics, configured as a 1 Pair Common Cathode arrangement with a 30 V reverse voltage rating and 15 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 rectification applications.

The STPS3030CT is classified as Obsolete, necessitating identification of equivalent substitute components for ongoing design support and procurement. Substitute parts must maintain electrical compatibility across critical parameters including reverse voltage rating, current capacity, forward voltage characteristics, and thermal specifications while ensuring continued compliance with RoHS3 and REACH standards.

Key Parameters

Parameter	Value	Unit
Diode Configuration	1 Pair Common Cathode	—
Technology	Schottky	—
Voltage - DC Reverse (Vr) (Max)	30	V
Current - Average Rectified (Io) (per Diode)	15	A
Voltage - Forward (Vf) (Max) @ If	490 mV @ 15 A	—
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	—
Current - Reverse Leakage @ Vr	1	mA @ 30 V
Operating Temperature - Junction (Max)	150	°C
Mounting Type	Through Hole	—
Package / Case	TO-220-3	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitute parts for the STPS3030CT are selected based on strict electrical and mechanical compatibility criteria. The primary substitution logic is determined by the following parameters:

Critical Matching Parameters:

Diode Configuration: 1 Pair Common Cathode (pin-compatible topology)
Technology: Schottky (fast recovery rectification)
Voltage - DC Reverse (Vr) (Max): 30 V minimum rating
Current - Average Rectified (Io) (per Diode): 15 A minimum rating
Mounting Type: Through Hole
Package / Case: TO-220-3 (physical and electrical pin compatibility)

Acceptable Variation Parameters:

Voltage - Forward (Vf) (Max) @ If: Substitutes may vary within typical Schottky diode specifications
Current - Reverse Leakage @ Vr: Substitutes may exhibit different leakage characteristics
Operating Temperature - Junction: Substitutes may have extended or different temperature ranges

Substitute parts that meet or exceed the critical matching parameters are considered electrically and mechanically compatible with the STPS3030CT in applications where the original component specifications are required.

Parameter Comparison

Parameter	STPS3030CT (Main)	MBR2030CTLG	MBR2535CTG	MBR30H30CTG
Manufacturer	STMicroelectronics	onsemi	onsemi	onsemi
Diode Configuration	1 Pair Common Cathode	1 Pair Common Cathode	1 Pair Common Cathode	1 Pair Common Cathode
Technology	Schottky	Schottky	Schottky	Schottky
Voltage - DC Reverse (Vr) (Max)	30 V	30 V	35 V	30 V
Current - Average Rectified (Io) (per Diode)	15 A	10 A	30 A	15 A
Voltage - Forward (Vf) (Max) @ If	490 mV @ 15 A	520 mV @ 10 A	820 mV @ 30 A	480 mV @ 15 A
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)
Current - Reverse Leakage @ Vr	1 mA @ 30 V	5 mA @ 30 V	200 µA @ 35 V	800 µA @ 30 V
Operating Temperature - Junction	150°C (Max)	-65°C ~ 175°C	-65°C ~ 175°C	-55°C ~ 150°C
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole
Package / Case	TO-220-3	TO-220-3	TO-220-3	TO-220-3
Product Status	Obsolete	Last Time Buy	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

MBR30H30CTG (Recommended Primary Substitute)

The MBR30H30CTG manufactured by onsemi is the optimal substitute for the STPS3030CT. This component matches all critical electrical parameters: 30 V reverse voltage rating, 15 A average rectified current per diode, 1 Pair Common Cathode configuration, and TO-220-3 package. The forward voltage characteristic of 480 mV @ 15 A is equivalent to the main part at 490 mV @ 15 A. The MBR30H30CTG maintains Active product status, ensuring long-term availability and supply chain continuity. Full RoHS3 compliance and REACH unaffected status are maintained. Operating temperature range of -55°C ~ 150°C aligns with the main part's maximum junction temperature specification.

MBR2535CTG (Secondary Substitute for Higher Current Applications)

The MBR2535CTG manufactured by onsemi provides enhanced current capacity at 30 A per diode, double the STPS3030CT rating, with a slightly elevated reverse voltage rating of 35 V. This component is suitable for applications requiring current headroom beyond the original 15 A specification. The device maintains 1 Pair Common Cathode configuration and TO-220-3 package compatibility. Active product status ensures availability. RoHS3 compliance and REACH unaffected status are confirmed. This substitute is appropriate only when the application circuit can accommodate the higher forward voltage characteristic of 820 mV @ 30 A.

MBR2030CTLG (Limited Substitution for Reduced Current Applications)

The MBR2030CTLG manufactured by onsemi provides a 30 V reverse voltage rating with reduced current capacity of 10 A per diode. This component is not recommended as a direct substitute for the STPS3030CT due to insufficient current rating. The Last Time Buy product status indicates limited future availability. This part is suitable only for applications where the circuit current requirement does not exceed 10 A per diode.

Frequently Asked Questions (FAQ)

Q: Can the MBR30H30CTG directly replace the STPS3030CT in existing circuit designs?

A: Yes. The MBR30H30CTG is electrically and mechanically compatible with the STPS3030CT. Both components share identical reverse voltage (30 V), current rating (15 A per diode), diode configuration (1 Pair Common Cathode), and package type (TO-220-3). Forward voltage characteristics are equivalent at the rated current. No circuit modifications are required.

Q: What is the difference between the MBR2535CTG and the STPS3030CT?

A: The MBR2535CTG has a higher reverse voltage rating (35 V versus 30 V) and significantly higher current capacity (30 A versus 15 A per diode). The forward voltage at rated current is substantially higher (820 mV @ 30 A versus 490 mV @ 15 A). The MBR2535CTG is suitable for applications requiring greater current handling capability but may introduce additional power dissipation due to higher forward voltage drop.

Q: Why is the MBR2030CTLG not recommended as a substitute?

A: The MBR2030CTLG has a reduced current rating of 10 A per diode, which is insufficient to meet the STPS3030CT specification of 15 A per diode. Use of this component in a circuit designed for 15 A operation would result in device overstress and potential failure. The MBR2030CTLG is suitable only for applications with maximum current requirements not exceeding 10 A per diode.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All substitute parts listed (MBR30H30CTG, MBR2535CTG, and MBR2030CTLG) are ROHS3 Compliant and REACH Unaffected, matching the compliance status of the STPS3030CT.

Q: What is the significance of the TO-220-3 package specification?

A: The TO-220-3 package is a Through Hole component with three leads, providing both electrical and mechanical compatibility. All substitute parts maintain this package type, ensuring direct pin-compatible installation on existing printed circuit boards without layout modifications.

Q: How do reverse leakage current differences affect component selection?

A: Reverse leakage current varies among the substitute parts (1 mA for STPS3030CT, 5 mA for MBR2030CTLG, 200 µA for MBR2535CTG, and 800 µA for MBR30H30CTG). In most rectification applications, these differences are not critical. However, in precision analog circuits or low-power applications where leakage current contributes significantly to total circuit current, the STPS3030CT or MBR2535CTG may be preferred due to lower leakage characteristics.

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

A: The STPS3030CT is classified as Obsolete, indicating no further manufacturing or availability. The MBR30H30CTG is Active, ensuring continued production and supply availability for new designs and long-term support. The MBR2030CTLG is Last Time Buy, indicating limited remaining inventory and imminent discontinuation. For new designs, the MBR30H30CTG is the recommended choice for supply chain stability.

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