MBR4045PTHC0G Equivalent & Substitute Parts

Part Overview

The MBR4045PTHC0G 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 40 A per diode. The device is packaged in TO-247-3 through-hole format and is qualified to AEC-Q101 automotive standards. This part is currently active in production with 679 pieces in stock.

Substitute parts are identified when equivalent electrical and mechanical parameters are maintained within the allowed specifications for this diode rectifier category. Substitution becomes necessary when the primary part reaches end-of-life status, inventory constraints occur, or alternative sourcing is required while maintaining circuit performance.

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)	40 A
Voltage - Forward (Vf) (Max) @ If	800 mV @ 40 A
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)
Mounting Type	Through Hole
Package / Case	TO-247-3
Operating Temperature - Junction	-55°C ~ 150°C
Grade	Automotive
Qualification	AEC-Q101
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts for the MBR4045PTHC0G are grouped based on the following substitution criteria:

Critical Parameters for Substitution:

Diode Configuration: 1 Pair Common Cathode (must match)
Technology: Schottky (must match)
Voltage - DC Reverse (Vr) (Max): 45 V (must match)
Mounting Type: Through Hole (must match)
Package / Case: TO-247-3 (must match)
Speed: Fast Recovery ≤ 500ns, > 200mA (Io) (must match)

Variable Parameters (Allowed to Differ):

Current - Average Rectified (Io) (per Diode): Substitutes with lower current ratings are acceptable for applications not requiring full 40 A capacity
Voltage - Forward (Vf) (Max) @ If: Variation permitted within Schottky diode technology specifications
Operating Temperature - Junction: Variation permitted based on application thermal requirements
Current - Reverse Leakage @ Vr: Variation permitted within acceptable leakage specifications

All substitute parts listed maintain the same 45 V reverse voltage rating, TO-247-3 package, through-hole mounting, and Schottky fast recovery technology. Substitute parts are available from STMicroelectronics with current ratings ranging from 15 A to 30 A per diode.

Parameter Comparison

Part Number	Manufacturer	Diode Configuration	Technology	Vr (Max)	Io (per Diode)	Vf (Max) @ If	Speed	Package	Mounting Type	Tj (Max)	RoHS Status
MBR4045PTHC0G	Taiwan Semiconductor Corporation	1 Pair Common Cathode	Schottky	45 V	40 A	800 mV @ 40 A	Fast Recovery ≤ 500ns, > 200mA	TO-247-3	Through Hole	150°C	ROHS3 Compliant
STPS3045CW	STMicroelectronics	1 Pair Common Cathode	Schottky	45 V	15 A	570 mV @ 15 A	Fast Recovery ≤ 500ns, > 200mA	TO-247-3	Through Hole	200°C	ROHS3 Compliant
STPS30L45CW	STMicroelectronics	1 Pair Common Cathode	Schottky	45 V	15 A	550 mV @ 15 A	Fast Recovery ≤ 500ns, > 200mA	TO-247-3	Through Hole	150°C	ROHS3 Compliant
STPS4045CW	STMicroelectronics	1 Pair Common Cathode	Schottky	45 V	20 A	760 mV @ 20 A	Fast Recovery ≤ 500ns, > 200mA	TO-247-3	Through Hole	175°C	ROHS3 Compliant
STPS40L45CW	STMicroelectronics	1 Pair Common Cathode	Schottky	45 V	20 A	530 mV @ 20 A	Fast Recovery ≤ 500ns, > 200mA	TO-247-3	Through Hole	150°C	ROHS3 Compliant
STPS6045CW	STMicroelectronics	1 Pair Common Cathode	Schottky	45 V	30 A	630 mV @ 30 A	Fast Recovery ≤ 500ns, > 200mA	TO-247-3	Through Hole	175°C	ROHS3 Compliant
STPS60L45CW	STMicroelectronics	1 Pair Common Cathode	Schottky	45 V	30 A	550 mV @ 30 A	Fast Recovery ≤ 500ns, > 200mA	TO-247-3	Through Hole	150°C	ROHS3 Compliant
STPS61L45CW	STMicroelectronics	1 Pair Common Cathode	Schottky	45 V	30 A	560 mV @ 30 A	Fast Recovery ≤ 500ns, > 200mA	TO-247-3	Through Hole	150°C	ROHS3 Compliant

Engineering Selection Recommendations

All substitute parts listed maintain active product status and ROHS3 compliance. The MBR4045PTHC0G is qualified to AEC-Q101 automotive standards. Substitute parts from STMicroelectronics are also ROHS3 compliant and suitable for through-hole assembly in TO-247-3 packages.

Current Rating Considerations:

Substitute parts with lower current ratings (15 A, 20 A, 30 A) are suitable for applications where the circuit design does not require the full 40 A capacity of the MBR4045PTHC0G. The STPS6045CW, STPS60L45CW, and STPS61L45CW devices rated at 30 A provide the closest current capacity match to the original part.

Forward Voltage Characteristics:

Forward voltage drop varies among substitute parts. The STPS40L45CW and STPS60L45CW exhibit lower forward voltage drops (530 mV @ 20 A and 550 mV @ 30 A respectively) compared to the MBR4045PTHC0G (800 mV @ 40 A), resulting in reduced power dissipation in applications operating at equivalent current levels.

Temperature Rating:

The MBR4045PTHC0G operates to a maximum junction temperature of 150°C. The STPS3045CW operates to 200°C maximum junction temperature, while STPS4045CW and STPS6045CW operate to 175°C. All other substitute parts operate to 150°C maximum junction temperature, matching the original part specification.

Frequently Asked Questions (FAQ)

Q: Can STPS3045CW or STPS30L45CW be used as direct replacements for MBR4045PTHC0G?

A: These parts share the same 45 V reverse voltage rating, TO-247-3 package, through-hole mounting, and Schottky fast recovery technology. However, they are rated at 15 A per diode compared to 40 A for the MBR4045PTHC0G. Substitution is valid only for applications where the circuit current requirement does not exceed 15 A per diode.

Q: What is the difference between STPS4045CW and STPS40L45CW?

A: Both parts are rated at 20 A per diode with 45 V reverse voltage in TO-247-3 packages. The STPS40L45CW exhibits a lower forward voltage drop of 530 mV @ 20 A compared to 760 mV @ 20 A for STPS4045CW. The STPS40L45CW also has a maximum junction temperature of 150°C, while STPS4045CW operates to 175°C.

Q: Are all substitute parts suitable for automotive applications?

A: The MBR4045PTHC0G is qualified to AEC-Q101 automotive standards. The substitute parts listed are ROHS3 compliant and suitable for through-hole assembly. Automotive qualification status for substitute parts should be confirmed against specific application requirements.

Q: Can STPS6045CW, STPS60L45CW, or STPS61L45CW be used in place of MBR4045PTHC0G?

A: These parts are rated at 30 A per diode, which is lower than the 40 A rating of the MBR4045PTHC0G. All three maintain the same 45 V reverse voltage, TO-247-3 package, and through-hole mounting. Substitution is valid for applications where the circuit current requirement does not exceed 30 A per diode.

Q: What is the significance of the "L" designation in part numbers like STPS40L45CW and STPS60L45CW?

A: The "L" designation indicates a variant within the STMicroelectronics product line. These variants maintain the same voltage and current ratings as their non-L counterparts but may differ in forward voltage characteristics and reverse leakage specifications.

Q: Are there any package or mounting differences between the main part and substitutes?

A: All parts listed use TO-247-3 packaging with through-hole mounting. No package or mounting modifications are required for substitution.

Q: What is the maximum reverse leakage current for each substitute part?

A: Reverse leakage current at 45 V varies among substitute parts: STPS3045CW (200 µA), STPS30L45CW (400 µA), STPS4045CW (200 µA), STPS40L45CW (600 µA), STPS6045CW (500 µA), STPS60L45CW (1.5 mA), and STPS61L45CW (1.5 mA). The MBR4045PTHC0G has a reverse leakage of 1 mA @ 45 V.

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