MBR20150PTH Equivalent & Substitute Parts

Part Overview

The MBR20150PTH is a Schottky diode array with 1 pair common cathode configuration rated for 150 V DC reverse voltage and 20 A average rectified current per diode. Manufactured by Taiwan Semiconductor Corporation, this component is packaged in TO-247-3 through-hole format and qualified to AEC-Q101 automotive standards. The part is currently discontinued at DiGi Electronics, necessitating identification of equivalent alternatives that maintain electrical and mechanical compatibility for ongoing production and repair applications.

Key Parameters

Parameter	Value
Diode Configuration	1 Pair Common Cathode
Technology	Schottky
Voltage - DC Reverse (Vr) (Max)	150 V
Current - Average Rectified (Io) (per Diode)	20 A
Voltage - Forward (Vf) (Max) @ If	1.02 V @ 20 A
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)
Current - Reverse Leakage @ Vr	100 µA @ 150 V
Operating Temperature - Junction	-55°C ~ 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

Substitution of the MBR20150PTH is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

Diode Configuration: 1 Pair Common Cathode
Technology: Schottky
Voltage - DC Reverse (Vr) (Max): 150 V
Mounting Type: Through Hole
Package / Case: TO-247-3

Current Rating Consideration: Substitute parts are grouped by average rectified current capacity. The MBR20150PTH operates at 20 A per diode. Substitutes with equal or higher current ratings (20 A, 30 A, 40 A) are electrically compatible for this application. Substitutes with lower current ratings (15 A) are not suitable for direct replacement in circuits designed for 20 A operation.

Compliance and Status: All identified substitutes maintain ROHS3 compliance and MSL 1 rating. Active product status indicates ongoing availability and manufacturer support.

Parameter Comparison

Parameter	MBR20150PTH	MBR30150WT	STPS30150CW	STPS40150CW	STPS61150CW	STPS80150CW
Manufacturer	Taiwan Semiconductor Corporation	SMC Diode Solutions	STMicroelectronics	STMicroelectronics	STMicroelectronics	STMicroelectronics
Diode Configuration	1 Pair Common Cathode	1 Pair Common Cathode	1 Pair Common Cathode	1 Pair Common Cathode	1 Pair Common Cathode	1 Pair Common Cathode
Technology	Schottky	Schottky	Schottky	Schottky	Schottky	Schottky
Voltage - DC Reverse (Vr) (Max)	150 V	150 V	150 V	150 V	150 V	150 V
Current - Average Rectified (Io) (per Diode)	20 A	Not Specified	15 A	20 A	30 A	40 A
Voltage - Forward (Vf) (Max) @ If	1.02 V @ 20 A	1 V @ 15 A	920 mV @ 15 A	920 mV @ 20 A	840 mV @ 30 A	840 mV @ 40 A
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)
Current - Reverse Leakage @ Vr	100 µA @ 150 V	100 µA @ 150 V	6.5 µA @ 150 V	8 µA @ 150 V	20 µA @ 150 V	30 µA @ 150 V
Operating Temperature - Junction (Max)	150°C	150°C	175°C	175°C	175°C	175°C
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Package / Case	TO-247-3	TO-247-3	TO-247-3	TO-247-3	TO-247-3	TO-247-3
Product Status	Discontinued at DiGi Electronics	Active	Active	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
MSL	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

Direct Equivalent (20 A Rating): The STPS40150CW from STMicroelectronics is the primary direct substitute for the MBR20150PTH. Both parts share identical current ratings (20 A per diode), voltage specifications (150 V), and package format (TO-247-3). The STPS40150CW is currently active with 2700 units in stock and maintains ROHS3 compliance. Forward voltage characteristics are superior (920 mV @ 20 A versus 1.02 V @ 20 A), and maximum junction temperature is higher (175°C versus 150°C), providing improved thermal margin.

Higher Current Alternatives: The STPS61150CW (30 A) and STPS80150CW (40 A) are suitable for applications where the circuit can accommodate higher current capacity without adverse effects. These parts provide additional design margin and are available in higher quantities (5876 and 2840 units respectively). Both maintain the same 150 V voltage rating and TO-247-3 package.

Lower Current Alternative: The STPS30150CW (15 A) is not suitable as a direct replacement for circuits designed for 20 A operation. This part is listed for reference only and should not be selected for the MBR20150PTH application.

Compliance Consideration: The MBR30150WT from SMC Diode Solutions maintains electrical compatibility but carries REACH Affected status, whereas the MBR20150PTH is REACH Unaffected. This distinction may be relevant for specific regulatory environments.

Frequently Asked Questions (FAQ)

Q: Can the STPS40150CW directly replace the MBR20150PTH in all applications?

A: Yes. The STPS40150CW matches the critical electrical parameters: 150 V reverse voltage, 20 A average rectified current per diode, 1 Pair Common Cathode configuration, and TO-247-3 through-hole package. Both parts employ Schottky technology with fast recovery characteristics. The STPS40150CW offers improved forward voltage performance and higher maximum junction temperature.

Q: Why are higher current-rated parts (30 A, 40 A) listed as substitutes?

A: Schottky diode arrays with higher current ratings are electrically compatible when the circuit design permits. A 30 A or 40 A rated device operates safely in a 20 A circuit, providing additional thermal and electrical margin. Selection depends on circuit requirements and design constraints.

Q: Is the MBR30150WT from SMC Diode Solutions a suitable substitute?

A: The MBR30150WT is electrically compatible in terms of voltage rating, configuration, and package. However, the average rectified current specification is not provided for this part, creating uncertainty in direct comparison. Additionally, this part carries REACH Affected status, which may be a consideration depending on regulatory requirements. The STPS40150CW is the preferred alternative due to complete specification transparency.

Q: What is the significance of the TO-247-3 package specification?

A: The TO-247-3 package is a three-lead through-hole format with specific pin spacing and mounting hole dimensions. All listed substitutes use identical TO-247-3 packaging, ensuring mechanical compatibility with existing PCB layouts and mounting hardware without modification.

Q: Are there performance differences between the MBR20150PTH and STPS40150CW?

A: The STPS40150CW exhibits lower forward voltage (920 mV @ 20 A versus 1.02 V @ 20 A), resulting in reduced power dissipation. Maximum junction temperature is 175°C compared to 150°C, providing improved thermal headroom. Reverse leakage current is lower (8 µA versus 100 µA at 150 V), indicating superior blocking characteristics.

Q: Can the STPS30150CW (15 A) be used in place of the MBR20150PTH (20 A)?

A: No. The STPS30150CW is rated for 15 A average rectified current, which is below the 20 A specification of the MBR20150PTH. Using an undersized component in a 20 A circuit creates risk of thermal stress and potential failure.

Q: What is the inventory status of substitute parts?

A: STPS40150CW has 2700 units in stock, STPS61150CW has 5876 units, and STPS80150CW has 2840 units. All substitute parts are currently active products with established supply chains.

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