MBR2045PT C0G Equivalent & Substitute Parts

Part Overview

The MBR2045PT C0G is a Schottky diode array manufactured by Taiwan Semiconductor Corporation, configured as 1 pair common cathode with a maximum reverse voltage of 45 V and average rectified current of 20 A per diode. The component is housed in a TO-247-3 through-hole package and is classified as Active product status with ROHS3 compliance.

Substitute parts are identified when equivalent electrical and mechanical parameters are maintained within the allowed specifications for this diode rectifier category. Substitution becomes necessary due to inventory availability, manufacturing lead times, or design optimization requirements while maintaining functional compatibility.

Key Parameters

Parameter	Value	Unit
Diode Configuration	1 Pair Common Cathode	—
Technology	Schottky	—
Voltage - DC Reverse (Vr) (Max)	45	V
Current - Average Rectified (Io) (per Diode)	20	A
Voltage - Forward (Vf) (Max) @ If	840 mV @ 20 A	—
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	—
Current - Reverse Leakage @ Vr	100	µA @ 45 V
Operating Temperature - Junction	-55 to 150	°C
Mounting Type	Through Hole	—
Package / Case	TO-247-3	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitute parts for the MBR2045PT C0G are grouped based on strict electrical and mechanical compatibility criteria. All substitute parts maintain the following mandatory parameters:

Diode Configuration: 1 Pair Common Cathode
Technology: Schottky
Voltage - DC Reverse (Vr) (Max): 45 V
Mounting Type: Through Hole
Package / Case: TO-247-3
Speed: Fast Recovery ≤ 500ns, > 200mA (Io)
RoHS Status: ROHS3 Compliant
Moisture Sensitivity Level (MSL): 1 (Unlimited)

Substitution is permitted when the Current - Average Rectified (Io) per diode meets or exceeds 20 A. Forward voltage (Vf), reverse leakage current (Ir), and maximum junction temperature may vary within the specifications of each substitute part without affecting functional compatibility in the application circuit.

Parameter Comparison

Part Number	Manufacturer	Vr (Max) [V]	Io (per Diode) [A]	Vf (Max) @ If [mV]	Ir @ Vr [µA]	Tj (Max) [°C]	Package
MBR2045PT C0G	Taiwan Semiconductor Corporation	45	20	840 @ 20 A	100 @ 45 V	150	TO-247-3
STPS3045CW	STMicroelectronics	45	15	570 @ 15 A	200 @ 45 V	200	TO-247-3
STPS30L45CW	STMicroelectronics	45	15	550 @ 15 A	400 @ 45 V	150	TO-247-3
STPS4045CW	STMicroelectronics	45	20	760 @ 20 A	200 @ 45 V	175	TO-247-3
STPS40L45CW	STMicroelectronics	45	20	530 @ 20 A	600 @ 45 V	150	TO-247-3
STPS6045CW	STMicroelectronics	45	30	630 @ 30 A	500 @ 45 V	175	TO-247-3
STPS60L45CW	STMicroelectronics	45	30	550 @ 30 A	1500 @ 45 V	150	TO-247-3
STPS61L45CW	STMicroelectronics	45	30	560 @ 30 A	1500 @ 45 V	150	TO-247-3

Engineering Selection Recommendations

All listed substitute parts maintain Active product status and ROHS3 compliance, consistent with the MBR2045PT C0G. Selection among substitute parts is determined by application-specific current requirements and thermal operating conditions.

Direct Current Rating Equivalents (20 A): STPS4045CW and STPS40L45CW provide identical 20 A current ratings. STPS4045CW operates at maximum junction temperature of 175°C, while STPS40L45CW is rated to 150°C. STPS40L45CW exhibits lower forward voltage (530 mV @ 20 A) compared to the main part (840 mV @ 20 A), resulting in reduced power dissipation.

Higher Current Capacity (30 A): STPS6045CW, STPS60L45CW, and STPS61L45CW provide 30 A current ratings, exceeding the main part specification. These components are suitable for applications requiring increased current margin or thermal headroom. STPS6045CW operates at 175°C maximum junction temperature, while STPS60L45CW and STPS61L45CW are rated to 150°C.

Lower Current Capacity (15 A): STPS3045CW and STPS30L45CW provide 15 A current ratings. These components are not suitable as direct substitutes for the MBR2045PT C0G in applications requiring 20 A operation.

All substitute parts are manufactured by STMicroelectronics and packaged in TO-247-3 through-hole configuration, maintaining mechanical compatibility with the original design.

Frequently Asked Questions (FAQ)

Q: Can STPS3045CW or STPS30L45CW be used as substitutes for MBR2045PT C0G?

A: No. STPS3045CW and STPS30L45CW are rated for 15 A average rectified current per diode, which is below the 20 A requirement of the MBR2045PT C0G. These parts do not meet the minimum current specification for direct substitution.

Q: What is the difference between STPS4045CW and STPS40L45CW?

A: Both parts are rated for 20 A average rectified current and 45 V reverse voltage in TO-247-3 packages. STPS4045CW has a maximum junction temperature of 175°C and forward voltage of 760 mV @ 20 A. STPS40L45CW has a maximum junction temperature of 150°C and forward voltage of 530 mV @ 20 A. The lower forward voltage of STPS40L45CW results in reduced power dissipation during operation.

Q: Can higher-rated parts like STPS6045CW be used in place of MBR2045PT C0G?

A: Yes. STPS6045CW, STPS60L45CW, and STPS61L45CW are rated for 30 A average rectified current, which exceeds the 20 A requirement. These parts maintain the same 45 V reverse voltage rating and TO-247-3 package configuration. Higher current rating provides additional design margin and thermal capacity.

Q: Are all substitute parts RoHS compliant?

A: Yes. All listed substitute parts are ROHS3 compliant and have Moisture Sensitivity Level (MSL) of 1 (Unlimited), matching the compliance profile of the MBR2045PT C0G.

Q: What is the significance of the "L" designation in part numbers like STPS40L45CW?

A: The "L" designation indicates a variant within the STMicroelectronics product line. Comparison of electrical parameters shows that "L" variants typically feature lower forward voltage characteristics. For example, STPS40L45CW (530 mV @ 20 A) has lower forward voltage than STPS4045CW (760 mV @ 20 A).

Q: Are all substitute parts available in the same packaging format?

A: Yes. All substitute parts are packaged in TO-247-3 through-hole configuration, maintaining mechanical and thermal interface compatibility with the original MBR2045PT C0G design.

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

A: The MBR2045PT C0G operates from -55°C to 150°C junction temperature. Substitute parts vary in maximum junction temperature: STPS3045CW reaches 200°C, STPS4045CW reaches 175°C, while STPS30L45CW, STPS40L45CW, STPS60L45CW, and STPS61L45CW are limited to 150°C. Minimum operating temperature specifications are not provided in the available data.

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