MBR150RL Equivalent & Substitute Parts

Part Overview

The MBR150RL is a Schottky rectifier diode manufactured by onsemi, rated for 50 V DC reverse voltage and 1 A average rectified current in a through-hole axial package (DO-204AL, DO-41). The device features fast recovery characteristics with a maximum forward voltage of 750 mV at 1 A and operates across a junction temperature range of -65°C to 150°C.

The MBR150RL is classified as obsolete. Equivalent and substitute parts are necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements. Substitute parts must maintain electrical compatibility within the specified parameter tolerances while meeting current manufacturing and compliance standards.

Key Parameters

Parameter	Value	Unit	Substitution Relevance
Voltage - DC Reverse (Vr) (Max)	50	V	Critical - determines circuit voltage rating
Current - Average Rectified (Io)	1	A	Critical - determines load capacity
Voltage - Forward (Vf) (Max) @ If	750 mV @ 1 A	mV	Important - affects power dissipation and circuit performance
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	ns	Important - determines switching characteristics
Current - Reverse Leakage @ Vr	500	µA @ 50 V	Important - affects standby current and circuit efficiency
Mounting Type	Through Hole	-	Critical - determines PCB compatibility
Package / Case	DO-204AL, DO-41, Axial	-	Critical - physical and electrical interface
Operating Temperature - Junction	-65 to 150	°C	Important - determines thermal operating range
Technology	Schottky	-	Critical - defines device type and characteristics

Substitute Part Grouping Explanation

Substitution logic for the MBR150RL is based on the following criteria:

Direct Equivalents (Identical Electrical and Mechanical Specifications): Parts that maintain all critical parameters: 50 V reverse voltage rating, 1 A average rectified current, fast recovery speed (≤ 500ns), through-hole axial mounting, and compatible package designation (DO-204AL/DO-41). Forward voltage tolerance and reverse leakage characteristics must remain within acceptable operational limits.

Functional Equivalents (Voltage-Rated Substitutes): Parts rated at 50 V reverse voltage with 1 A current capacity, identical mounting type and package family, but manufactured by different suppliers or with minor variations in forward voltage or leakage characteristics. These maintain full circuit compatibility.

Downrated Substitutes (Lower Voltage Rating): Parts rated at 40 V reverse voltage with 1 A current capacity. These are suitable only for applications where the circuit voltage does not exceed 40 V. They share identical current rating, mounting type, package family, and fast recovery characteristics. Forward voltage and leakage may differ.

Uprated Substitutes (Higher Voltage Rating): Parts rated at 60 V reverse voltage with 1 A current capacity. These provide additional voltage margin and are compatible with all circuits designed for the MBR150RL. They maintain identical current rating, mounting type, package family, and fast recovery characteristics.

Parameter Comparison

Part Number	Manufacturer	Vr (Max) [V]	Io [A]	Vf (Max) @ 1A [mV]	Speed [ns]	Ir @ Vr [µA]	Package	Temp Range [°C]	Product Status	RoHS Status
MBR150RL	onsemi	50	1	750	≤ 500	500 @ 50V	DO-204AL, DO-41	-65 to 150	Obsolete	Non-compliant
MBR150RLG	onsemi	50	1	750	≤ 500	500 @ 50V	DO-204AL, DO-41	-65 to 150	Active	ROHS3 Compliant
1N5819G	Microchip Technology	40	1	600	≤ 500	1 @ 40V	DO-204AL, DO-41	-65 to 150	Active	Not specified
1N5819-BP	Micro Commercial Co	40	1	600	≤ 500	1 @ 40V	DO-204AL, DO-41	-55 to 125	Active	Not specified
SB140-E3/54	Vishay General Semiconductor	40	1	480	≤ 500	500 @ 40V	DO-204AL, DO-41	-65 to 125	Active	ROHS3 Compliant
SB150-E3/73	Vishay General Semiconductor	50	1	650	≤ 500	500 @ 50V	DO-204AL, DO-41	-65 to 150	Active	ROHS3 Compliant
SB150-E3/54	Vishay General Semiconductor	50	1	650	≤ 500	500 @ 50V	DO-204AL, DO-41	-65 to 125	Active	ROHS3 Compliant
SB150-T	Diodes Incorporated	50	1	700	≤ 500	500 @ 50V	DO-204AL, DO-41	-65 to 150	Active	ROHS3 Compliant
STPS1L60RL	STMicroelectronics	60	1	570	≤ 500	50 @ 60V	DO-204AL, DO-41	-65 to 150	Active	ROHS3 Compliant

Engineering Selection Recommendations

Primary Recommendation - Direct Equivalent:

MBR150RLG (onsemi) is the direct successor to the obsolete MBR150RL. It maintains identical electrical specifications (50 V, 1 A, 750 mV forward voltage, fast recovery) and mechanical compatibility (DO-204AL/DO-41 axial package). The MBR150RLG is in active production status and complies with ROHS3 standards, addressing both supply continuity and regulatory compliance requirements. This part is the preferred choice for direct replacement without circuit modification.

Secondary Recommendations - Voltage-Rated Equivalents:

SB150-E3/73 and SB150-E3/54 (Vishay General Semiconductor) and SB150-T (Diodes Incorporated) are functionally equivalent 50 V, 1 A Schottky diodes in identical packages. These parts are in active production and ROHS3 compliant. Forward voltage specifications range from 650 mV to 700 mV at 1 A, which is within acceptable tolerance for most applications. All three maintain the -65°C to 150°C operating temperature range (SB150-E3/54 operates to 125°C maximum). These parts are suitable for direct substitution where supply of MBR150RLG is constrained.

Downrated Substitutes - 40 V Voltage Rating:

1N5819G (Microchip Technology), 1N5819-BP (Micro Commercial Co), and SB140-E3/54 (Vishay General Semiconductor) are 40 V rated Schottky diodes with 1 A current capacity. These parts are suitable only for applications where circuit voltage does not exceed 40 V. All maintain through-hole axial mounting and fast recovery characteristics. Forward voltage is lower (480 mV to 600 mV), which may reduce power dissipation. Operating temperature ranges vary: 1N5819G operates to 150°C; 1N5819-BP to 125°C; SB140-E3/54 to 125°C. SB140-E3/54 is ROHS3 compliant.

Uprated Substitute - 60 V Voltage Rating:

STPS1L60RL (STMicroelectronics) is a 60 V, 1 A Schottky diode in identical package. This part provides additional voltage margin and is compatible with all circuits designed for the MBR150RL. Forward voltage is 570 mV at 1 A, lower than the original specification. Reverse leakage is significantly lower at 50 µA @ 60 V. The part is in active production, ROHS3 compliant, and operates across -65°C to 150°C. This part is suitable for applications requiring enhanced voltage headroom.

Compliance Considerations:

The MBR150RL is RoHS non-compliant. All recommended active substitutes (MBR150RLG, SB150 series, SB140-E3/54, STPS1L60RL) are ROHS3 compliant, meeting current regulatory requirements for new designs and production. All parts listed maintain REACH Unaffected status and EAR99 export classification.

Frequently Asked Questions (FAQ)

Q: Can MBR150RLG be used as a direct replacement for MBR150RL without circuit modification?

A: Yes. MBR150RLG is the active production equivalent of the obsolete MBR150RL. It maintains identical electrical specifications (50 V reverse voltage, 1 A current, 750 mV forward voltage, fast recovery speed) and mechanical compatibility (DO-204AL/DO-41 axial package). No circuit modification is required.

Q: What is the difference between the 50 V rated substitutes (SB150-E3/73, SB150-E3/54, SB150-T)?

A: All three are 50 V, 1 A Schottky diodes in identical packages. Differences are minor: forward voltage ranges from 650 mV to 700 mV at 1 A; SB150-E3/54 operates to 125°C maximum junction temperature while SB150-E3/73 and SB150-T operate to 150°C. All are ROHS3 compliant and in active production. Selection depends on thermal requirements and supply availability.

Q: Can 40 V rated diodes (1N5819G, 1N5819-BP, SB140-E3/54) be used in place of MBR150RL?

A: Only if the circuit voltage does not exceed 40 V. These parts have a lower voltage rating and are not suitable for applications requiring the full 50 V capability of the MBR150RL. Exceeding the rated voltage will result in device failure.

Q: Why would STPS1L60RL be chosen over MBR150RLG?

A: STPS1L60RL provides 60 V voltage rating, offering additional margin above the 50 V specification. It also features lower forward voltage (570 mV) and significantly lower reverse leakage (50 µA @ 60 V). These characteristics may reduce power dissipation and improve circuit efficiency in applications with marginal voltage headroom or stringent leakage requirements.

Q: Are all substitute parts available in the same package?

A: Yes. All substitute parts listed are available in DO-204AL/DO-41 axial through-hole packages, ensuring mechanical and PCB compatibility with the original MBR150RL design.

Q: What is the impact of forward voltage differences among substitutes?

A: Forward voltage differences (ranging from 480 mV to 750 mV at 1 A) directly affect power dissipation and voltage drop across the diode. Lower forward voltage reduces heat generation and improves efficiency. In most applications, these differences are acceptable. Critical applications requiring precise voltage drop characteristics should verify compatibility with the specific substitute part selected.

Q: Do all substitutes meet current compliance standards?

A: All active production substitutes listed are ROHS3 compliant and REACH Unaffected. The original MBR150RL is RoHS non-compliant. Substitution with compliant parts ensures compatibility with current manufacturing and regulatory requirements.

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

A: Most substitutes operate across -65°C to 150°C, matching the original MBR150RL. Exceptions are 1N5819-BP and SB140-E3/54, which operate to 125°C maximum. Applications requiring full -65°C to 150°C operation should select parts with matching temperature range.

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