SB150A-E3/54 Equivalent & Substitute Parts

Part Overview

The SB150A-E3/54 is a Schottky rectifier diode manufactured by Vishay General Semiconductor - Diodes Division, rated for 50 V DC reverse voltage and 1 A average rectified current in a DO-204AL (DO-41) through-hole axial package. This part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement continuity. The device operates across a junction temperature range of -65°C to 150°C and exhibits fast recovery characteristics suitable for switching applications.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	50	V
Current - Average Rectified (Io)	1	A
Voltage - Forward (Vf) (Max) @ If	650 mV @ 1 A	mV
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	ns
Current - Reverse Leakage @ Vr	500	µA @ 50 V
Mounting Type	Through Hole	—
Package / Case	DO-204AL, DO-41, Axial	—
Operating Temperature - Junction	-65 to 150	°C
Technology	Schottky	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution eligibility for the SB150A-E3/54 is determined by the following critical parameters:

Primary Substitution Criteria:

Voltage - DC Reverse (Vr) (Max): Must equal or exceed 50 V
Current - Average Rectified (Io): Must equal or exceed 1 A
Mounting Type: Must be Through Hole
Package / Case: Must be compatible with DO-204AL, DO-41, or Axial configurations
Technology: Must be Schottky rectifier diode

Secondary Compatibility Factors:

Operating Temperature - Junction: Must support the required application temperature range
Speed: Must maintain Fast Recovery characteristics (≤ 500ns, > 200mA)
RoHS and REACH compliance status

Substitute parts are grouped into two categories: Parametric Equivalents (identical electrical specifications from the same manufacturer) and Manufacturer Recommended Alternatives (functionally compatible parts from other manufacturers with comparable or superior electrical characteristics).

Parameter Comparison

Parameter	SB150A-E3/54 (Main)	SB150-E3/54	SB150-E3/73	1N5819 (Microchip)	1N5819-BP (MCC)	1N5819G (Microchip)	MBR150G (onsemi)
Manufacturer	Vishay	Vishay	Vishay	Microchip	Micro Commercial Co	Microchip	onsemi
Vr (Max) [V]	50	50	50	45	40	40	50
Io [A]	1	1	1	1	1	1	1
Vf (Max) @ If [mV]	650 @ 1 A	650 @ 1 A	650 @ 1 A	490 @ 1 A	600 @ 1 A	600 @ 1 A	750 @ 1 A
Speed	Fast Recovery ≤ 500ns	Fast Recovery ≤ 500ns	Fast Recovery ≤ 500ns	Fast Recovery ≤ 500ns	Fast Recovery ≤ 500ns	Fast Recovery ≤ 500ns	Fast Recovery ≤ 500ns
Ir @ Vr [µA]	500 @ 50 V	500 @ 50 V	500 @ 50 V	50 @ 45 V	1000 @ 40 V	1000 @ 40 V	500 @ 50 V
Tj (Operating) [°C]	-65 to 150	-65 to 150	-65 to 150	-65 to 125	-55 to 125	-65 to 150	-65 to 150
Package	DO-204AL (DO-41)	DO-204AL (DO-41)	DO-204AL (DO-41)	DO-41	DO-41	DO-41	Axial
Product Status	Obsolete	Active	Active	Active	Active	Active	Obsolete
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	Not specified	Not specified	Not specified	ROHS3 Compliant

Engineering Selection Recommendations

Parametric Equivalents (Preferred for Direct Replacement):

The SB150-E3/54 and SB150-E3/73 are parametric equivalents manufactured by Vishay with identical electrical specifications to the SB150A-E3/54. Both parts maintain 50 V reverse voltage rating, 1 A current rating, 650 mV forward voltage drop, and -65°C to 150°C operating temperature range. Both are ROHS3 compliant and currently in active production status. The SB150-E3/54 is available in Cut Tape packaging with 27,918 units in stock, while SB150-E3/73 is available with 4,200 units in stock. These parts provide direct functional replacement with no design modification required.

Manufacturer Recommended Alternatives (Conditional Substitution):

The 1N5819 series from Microchip Technology and Micro Commercial Co represents a widely adopted industry standard Schottky diode. The standard 1N5819 (Microchip) operates at 45 V maximum reverse voltage with superior forward voltage characteristics (490 mV @ 1 A) and lower reverse leakage (50 µA @ 45 V). This part is suitable for applications where the 50 V rating of the main part provides design margin above the actual circuit requirement. Operating temperature range is -65°C to 125°C, which is 25°C lower than the main part at the upper limit. The 1N5819 is available with 30,400 units in stock.

The 1N5819G (Microchip) maintains the full -65°C to 150°C operating temperature range of the main part but operates at 40 V maximum reverse voltage with 600 mV forward voltage drop and 1 mA reverse leakage @ 40 V. This variant is suitable for lower voltage applications and is available with 1,623 units in stock.

The 1N5819-BP (Micro Commercial Co) is rated for 40 V maximum reverse voltage with 600 mV forward voltage drop and operates across -55°C to 125°C. This part includes specified reverse recovery time of 10 ns and is available in bulk packaging with 1,029 units in stock.

The MBR150G (onsemi) matches the 50 V and 1 A ratings of the main part with identical operating temperature range (-65°C to 150°C) and ROHS3 compliance. However, this part exhibits higher forward voltage drop (750 mV @ 1 A) and is classified as obsolete. It is available with 1,500 units in stock.

Selection Guidance:

For applications requiring the full 50 V rating and -65°C to 150°C temperature range with active product support, select SB150-E3/54 or SB150-E3/73. For applications where 40-45 V reverse voltage is acceptable, the 1N5819 series offers superior forward voltage characteristics and wider industry availability. Verify actual circuit voltage requirements before selecting lower-rated alternatives.

Frequently Asked Questions (FAQ)

Q: Can the SB150-E3/54 directly replace the SB150A-E3/54?

A: Yes. The SB150-E3/54 is a parametric equivalent with identical electrical specifications: 50 V reverse voltage, 1 A current rating, 650 mV forward voltage drop, and -65°C to 150°C operating temperature. The only difference is packaging format (Cut Tape versus the original specification). Both are ROHS3 compliant and manufactured by Vishay. No circuit modification is required.

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

A: Both parts are parametric equivalents with identical electrical specifications. The difference lies in packaging and inventory availability. SB150-E3/54 is supplied in Cut Tape packaging with 27,918 units in stock, while SB150-E3/73 is also in Cut Tape with 4,200 units in stock. Electrical performance is identical.

Q: Can I use the 1N5819 instead of the SB150A-E3/54?

A: The 1N5819 (Microchip) can be used if your circuit operates below 45 V. The 1N5819 is rated for 45 V maximum reverse voltage compared to the SB150A-E3/54's 50 V rating. The 1N5819 offers superior forward voltage characteristics (490 mV versus 650 mV) and lower reverse leakage (50 µA versus 500 µA). However, the operating temperature range is limited to -65°C to 125°C, which is 25°C lower at the upper limit. Verify that your application voltage and temperature requirements are within these limits before substitution.

Q: What is the difference between 1N5819, 1N5819G, and 1N5819-BP?

A: All three are Schottky diodes with 1 A current rating but differ in reverse voltage rating and temperature range. The standard 1N5819 (Microchip) is rated for 45 V with -65°C to 125°C operating range. The 1N5819G (Microchip) is rated for 40 V with -65°C to 150°C operating range, matching the main part's temperature capability. The 1N5819-BP (Micro Commercial Co) is rated for 40 V with -55°C to 125°C operating range. Forward voltage drops range from 490 mV (1N5819) to 600 mV (1N5819G and 1N5819-BP). Select based on your specific voltage and temperature requirements.

Q: Is the MBR150G a suitable replacement?

A: The MBR150G matches the 50 V rating and -65°C to 150°C operating temperature of the SB150A-E3/54. However, it exhibits higher forward voltage drop (750 mV versus 650 mV) and is classified as obsolete with limited future availability. While electrically compatible, the SB150-E3/54 or SB150-E3/73 are preferred alternatives due to active production status and lower forward voltage characteristics.

Q: Are all these parts RoHS compliant?

A: The SB150A-E3/54, SB150-E3/54, SB150-E3/73, and MBR150G are all ROHS3 compliant. RoHS compliance status is not specified for the 1N5819 series parts (Microchip and Micro Commercial Co variants). Verify RoHS compliance with your supplier if this is a requirement for your application.

Q: Can I use these parts interchangeably in my circuit?

A: Interchangeability depends on your specific circuit requirements. All listed parts are Schottky rectifier diodes in through-hole DO-41 packages with 1 A current rating. However, they differ in reverse voltage rating (40 V to 50 V), forward voltage drop (490 mV to 750 mV), reverse leakage current (50 µA to 1000 µA), and operating temperature range (-55°C to 150°C). Verify that your circuit voltage, current, temperature, and leakage requirements are met by the substitute part before implementation.

Q: What packaging options are available?

A: All substitute parts are supplied in through-hole axial packages compatible with DO-204AL or DO-41 designations. The SB150-E3/54 and SB150-E3/73 are supplied in Cut Tape packaging. The 1N5819-BP is supplied in Bulk packaging. Verify packaging compatibility with your assembly process and component handling requirements.

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