SR005 B0G Schottky Diode Equivalent & Substitute Parts

Part Overview

The SR005 B0G is a Schottky rectifier diode manufactured by Taiwan Semiconductor Corporation, rated for 50 V DC reverse voltage and 500 mA average rectified current in a DO-204AL (DO-41) through-hole axial package. This component is classified as Active product status and is RoHS3 compliant.

Substitute parts become necessary when the SR005 B0G reaches end-of-life status, inventory depletion occurs, or when higher current capacity is required within the same voltage and package specifications. The substitute parts listed maintain electrical compatibility through matching reverse voltage ratings, fast recovery speed characteristics, and identical mounting technology while offering increased current handling capability or alternative sourcing options.

Key Parameters

Parameter	SR005 B0G
Voltage - DC Reverse (Vr) (Max)	50 V
Current - Average Rectified (Io)	500 mA
Voltage - Forward (Vf) (Max) @ If	700 mV @ 500 mA
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)
Current - Reverse Leakage @ Vr	500 µA @ 50 V
Mounting Type	Through Hole
Package / Case	DO-204AL, DO-41, Axial
Operating Temperature - Junction	-55°C ~ 150°C
Technology	Schottky
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the SR005 B0G is determined by the following critical parameters:

Mandatory Matching Parameters:

Voltage - DC Reverse (Vr) (Max): 50 V
Technology: Schottky
Speed: Fast Recovery ≤ 500ns, > 200mA (Io)
Current - Reverse Leakage @ Vr: 500 µA @ 50 V
Mounting Type: Through Hole
Package / Case: DO-204AL, DO-41, Axial

Allowable Variation Parameters:

Current - Average Rectified (Io): Substitute parts rated at 1 A (1000 mA) are acceptable as they exceed the 500 mA requirement and maintain backward compatibility
Voltage - Forward (Vf) (Max) @ If: Substitute parts with forward voltage specifications at higher current levels (1 A) are acceptable
Operating Temperature - Junction: Substitute parts with extended lower temperature limits (-65°C vs. -55°C) are acceptable

All substitute parts listed maintain the 50 V reverse voltage rating, Schottky technology, fast recovery speed, and identical reverse leakage characteristics. The substitute parts offer increased current capacity at 1 A, providing design margin and extended component availability.

Parameter Comparison

Parameter	SR005 B0G (Taiwan Semiconductor)	MBR150RLG (onsemi)	MBR150G (onsemi)	SB150-E3/54 (Vishay)	SB150-E3/73 (Vishay)
Voltage - DC Reverse (Vr) (Max)	50 V	50 V	50 V	50 V	50 V
Current - Average Rectified (Io)	500 mA	1 A	1 A	1 A	1 A
Voltage - Forward (Vf) (Max) @ If	700 mV @ 500 mA	750 mV @ 1 A	750 mV @ 1 A	650 mV @ 1 A	650 mV @ 1 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)
Current - Reverse Leakage @ Vr	500 µA @ 50 V	500 µA @ 50 V	500 µA @ 50 V	500 µA @ 50 V	500 µA @ 50 V
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Package / Case	DO-204AL, DO-41, Axial	DO-204AL, DO-41, Axial	DO-204AL, DO-41, Axial	DO-204AL, DO-41, Axial	DO-204AL, DO-41, Axial
Operating Temperature - Junction	-55°C ~ 150°C	-65°C ~ 150°C	-65°C ~ 150°C	-65°C ~ 150°C	-65°C ~ 150°C
Technology	Schottky	Schottky	Schottky	Schottky	Schottky
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

MBR150RLG (onsemi) is the primary substitute option. This part maintains Active product status, ensuring long-term availability and supply chain stability. The MBR150RLG is supplied in Cut Tape (CT) packaging and carries ROHS3 compliance with REACH Unaffected status. Current capacity is rated at 1 A, providing 100% design margin above the SR005 B0G 500 mA specification. Operating temperature range extends to -65°C, exceeding the SR005 B0G lower limit.

SB150-E3/54 and SB150-E3/73 (Vishay General Semiconductor - Diodes Division) are secondary substitute options. Both parts maintain Active product status with extensive inventory availability (27,918 Pcs and 4,200 Pcs respectively). These Vishay components offer superior forward voltage characteristics at 650 mV @ 1 A compared to the 700 mV @ 500 mA specification of the SR005 B0G. Both are supplied in Cut Tape (CT) packaging with ROHS3 compliance and REACH Unaffected status. Operating temperature range extends to -65°C.

MBR150G (onsemi) is classified as Obsolete product status and should be avoided for new designs or long-term applications. While electrically compatible, obsolete status indicates discontinued manufacturing and limited future availability.

All substitute parts are electrically and mechanically compatible with the SR005 B0G within the specified application parameters. Selection should prioritize Active product status parts (MBR150RLG, SB150-E3/54, SB150-E3/73) for design continuity and supply chain reliability.

Frequently Asked Questions (FAQ)

Q: Can MBR150RLG directly replace SR005 B0G in existing designs?

A: Yes. The MBR150RLG maintains identical reverse voltage (50 V), reverse leakage current (500 µA @ 50 V), fast recovery speed (≤ 500ns), and through-hole axial package configuration. The 1 A current rating exceeds the 500 mA requirement, providing design margin. Forward voltage at 1 A (750 mV) is comparable to the SR005 B0G specification at 500 mA (700 mV).

Q: What is the difference between SB150-E3/54 and SB150-E3/73?

A: Both parts are electrically identical with matching 50 V reverse voltage, 1 A current rating, 650 mV forward voltage @ 1 A, and fast recovery speed. The designation suffix (-E3/54 vs. -E3/73) indicates different tape and reel packaging configurations from Vishay. Selection between these parts depends on procurement and assembly equipment compatibility.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts (MBR150RLG, MBR150G, SB150-E3/54, SB150-E3/73) carry ROHS3 Compliant status and REACH Unaffected classification, matching the SR005 B0G environmental compliance profile.

Q: Why do substitute parts have higher current ratings (1 A vs. 500 mA)?

A: Higher current ratings in substitute parts provide design margin and extended component availability within the same voltage class and package footprint. The 1 A rating is backward compatible with 500 mA applications. Forward voltage characteristics remain within acceptable operating parameters.

Q: Should MBR150G be used as a substitute?

A: MBR150G is electrically compatible but carries Obsolete product status. For new designs or applications requiring long-term component availability, MBR150RLG or Vishay SB150 series parts are preferred. MBR150G may be considered only for legacy system maintenance where supply chain continuity is not a concern.

Q: Are there package differences between substitute parts?

A: All substitute parts use DO-204AL (DO-41) through-hole axial packages, maintaining identical PCB footprint and mounting compatibility with the SR005 B0G. Packaging format differences (Cut Tape vs. standard packaging) relate to supplier delivery methods and do not affect electrical or mechanical compatibility.

Q: What is the operating temperature range difference?

A: The SR005 B0G operates from -55°C to 150°C. All substitute parts extend the lower temperature limit to -65°C, providing 10°C additional margin at low temperatures. The upper temperature limit remains 150°C across all parts.

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