MBR60L45CTH Equivalent & Substitute Parts

Part Overview

The MBR60L45CTH is a Schottky diode array in a 1 Pair Common Cathode configuration rated for 45 V DC reverse voltage and 30 A average rectified current per diode. Manufactured by onsemi under the SWITCHMODE™ series, this component is designed for fast recovery applications with switching speeds ≤ 500 ns. The part is currently listed as obsolete, necessitating identification of equivalent and substitute components for ongoing design requirements and procurement planning.

Key Parameters

Parameter	Value
Diode Configuration	1 Pair Common Cathode
Technology	Schottky
Voltage - DC Reverse (Vr) (Max)	45 V
Current - Average Rectified (Io) (per Diode)	30 A
Voltage - Forward (Vf) (Max) @ If	550 mV @ 30 A
Speed	Fast Recovery ≤ 500 ns, > 200 mA (Io)
Current - Reverse Leakage @ Vr	1.2 mA @ 45 V
Operating Temperature - Junction	-65°C ~ 175°C
Mounting Type	Through Hole
Package / Case	TO-220-3
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the MBR60L45CTH is determined by the following critical parameters:

Primary Matching Criteria:

Diode Configuration: 1 Pair Common Cathode
Technology: Schottky
Voltage - DC Reverse (Vr) (Max): 45 V
Mounting Type: Through Hole
Package / Case: TO-220-3

Secondary Compatibility Criteria:

Current - Average Rectified (Io) (per Diode): Equal to or greater than 30 A
Speed: Fast Recovery ≤ 500 ns, > 200 mA (Io)
Operating Temperature Range: Must accommodate application requirements
RoHS Status: ROHS3 Compliant

Substitute parts are classified into two categories:

Direct Equivalent: Parts matching all primary and secondary criteria with identical electrical performance specifications.

Functional Equivalent: Parts matching all primary criteria with variations in secondary parameters (current rating, forward voltage, or reverse leakage) that remain within acceptable operational limits for the application.

Parameter Comparison

Parameter	MBR60L45CTH (Main)	MBR60L45CTG (Direct)	STPS40L45CT (Functional)	VS-60CTQ045-M3 (Functional)
Manufacturer	onsemi	onsemi	STMicroelectronics	Vishay General Semiconductor
Product Status	Obsolete	Active	Active	Active
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)	45 V	45 V	45 V	45 V
Current - Average Rectified (Io) (per Diode)	30 A	30 A	20 A	30 A
Voltage - Forward (Vf) (Max) @ If	550 mV @ 30 A	550 mV @ 30 A	530 mV @ 20 A	720 mV @ 60 A
Speed	Fast Recovery ≤ 500 ns, > 200 mA (Io)	Fast Recovery ≤ 500 ns, > 200 mA (Io)	Fast Recovery ≤ 500 ns, > 200 mA (Io)	Fast Recovery ≤ 500 ns, > 200 mA (Io)
Current - Reverse Leakage @ Vr	1.2 mA @ 45 V	1.2 mA @ 45 V	600 µA @ 45 V	2 mA @ 45 V
Operating Temperature - Junction	-65°C ~ 175°C	-65°C ~ 175°C	150°C (Max)	-65°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
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Inventory Status	803 Pcs (Obsolete)	2949 Pcs (Active)	17860 Pcs (Active)	7307 Pcs (Active)

Engineering Selection Recommendations

MBR60L45CTG (Direct Equivalent - Recommended Primary Substitute)

The MBR60L45CTG is manufactured by onsemi and provides direct electrical and mechanical equivalence to the MBR60L45CTH. Both components share identical specifications across all critical parameters: 45 V reverse voltage rating, 30 A average rectified current, 550 mV forward voltage at 30 A, and -65°C to 175°C operating temperature range. The MBR60L45CTG is currently in active production status with 2949 units in stock, ensuring supply chain continuity. Both parts are ROHS3 compliant and REACH unaffected. The only difference is packaging format (Tube for MBR60L45CTG versus unspecified for MBR60L45CTH), which does not affect electrical performance or mechanical fit in TO-220-3 footprints.

STPS40L45CT (Functional Equivalent - Current-Limited Applications)

The STPS40L45CT manufactured by STMicroelectronics is suitable for applications where the 30 A current requirement can be reduced to 20 A per diode. This part maintains the 45 V reverse voltage rating, fast recovery switching speed, and TO-220-3 package compatibility. The forward voltage is 530 mV at 20 A, which is 20 mV lower than the MBR60L45CTH at its rated current. Reverse leakage is 600 µA at 45 V, representing lower leakage than the main part. The maximum junction temperature is 150°C, which is 25°C lower than the MBR60L45CTH. This part is ROHS3 compliant with 17860 units in stock. Selection of this part requires confirmation that application current requirements do not exceed 20 A per diode.

VS-60CTQ045-M3 (Functional Equivalent - High-Current Applications)

The VS-60CTQ045-M3 manufactured by Vishay General Semiconductor maintains the 45 V reverse voltage rating and 30 A average rectified current specification, matching the MBR60L45CTH current capacity. The part is housed in TO-220-3 package with fast recovery switching characteristics. Forward voltage is specified at 720 mV at 60 A, which is higher than the MBR60L45CTH specification. Reverse leakage is 2 mA at 45 V, exceeding the main part by 0.8 mA. Operating temperature range is -65°C to 150°C, providing 25°C lower maximum temperature than the MBR60L45CTH. This part is ROHS3 compliant with 7307 units in stock. Selection requires verification that higher forward voltage and reverse leakage specifications are acceptable for the application.

Frequently Asked Questions (FAQ)

Q: Can the MBR60L45CTG directly replace the MBR60L45CTH without circuit modifications?

A: Yes. The MBR60L45CTG is a direct equivalent with identical electrical specifications and TO-220-3 package compatibility. No circuit modifications are required. Both parts are manufactured by onsemi with matching voltage ratings (45 V), current ratings (30 A), forward voltage (550 mV @ 30 A), and operating temperature range (-65°C to 175°C).

Q: What is the primary limitation of the STPS40L45CT as a substitute?

A: The STPS40L45CT has a reduced current rating of 20 A per diode compared to the 30 A rating of the MBR60L45CTH. This part is suitable only for applications where the actual operating current does not exceed 20 A per diode. The 45 V reverse voltage rating and TO-220-3 package remain compatible.

Q: Why does the VS-60CTQ045-M3 have higher forward voltage specifications?

A: The VS-60CTQ045-M3 forward voltage is specified at 720 mV at 60 A, whereas the MBR60L45CTH is specified at 550 mV at 30 A. Forward voltage in Schottky diodes varies with current level. The higher specification reflects measurement at a higher current point. For applications operating at 30 A, actual forward voltage performance may differ from the stated specification.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. The MBR60L45CTG, STPS40L45CT, and VS-60CTQ045-M3 are all ROHS3 compliant and REACH unaffected, matching the compliance status of the MBR60L45CTH.

Q: What is the difference between the MBR60L45CTH and MBR60L45CTG packaging?

A: The MBR60L45CTH packaging format is unspecified in the provided data. The MBR60L45CTG is supplied in Tube packaging. Both parts use the TO-220-3 package case, which determines physical dimensions and pin configuration. Tube packaging affects handling and storage but does not impact electrical performance or mechanical fit.

Q: Can I use the STPS40L45CT in a circuit designed for 30 A operation?

A: No. The STPS40L45CT is rated for 20 A maximum average rectified current per diode. Using this part in a circuit requiring 30 A operation would exceed the component's current rating and may result in thermal stress, reduced reliability, or component failure.

Q: What is the temperature operating range difference between substitutes?

A: The MBR60L45CTH and MBR60L45CTG both operate from -65°C to 175°C. The STPS40L45CT operates to 150°C maximum, and the VS-60CTQ045-M3 operates to 150°C maximum. Applications requiring operation above 150°C junction temperature require the MBR60L45CTG as the only suitable substitute.

Q: How do reverse leakage specifications compare across all parts?

A: The MBR60L45CTH specifies 1.2 mA reverse leakage at 45 V. The MBR60L45CTG matches this at 1.2 mA. The STPS40L45CT has lower leakage at 600 µA. The VS-60CTQ045-M3 has higher leakage at 2 mA. Applications sensitive to reverse leakage current should prioritize the STPS40L45CT or MBR60L45CTG.

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