B150-E3/5AT Schottky Diode Equivalent & Substitute Parts

Part Overview

The B150-E3/5AT 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 surface mount DO-214AC (SMA) package. This component is classified as Active product status and is ROHS3 compliant. Equivalent and substitute parts are identified based on matching or compatible electrical ratings, mechanical packaging, and operational characteristics. Alternative sources and packaging configurations are documented to support procurement flexibility and supply chain continuity.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	50	V
Current - Average Rectified (Io)	1	A
Voltage - Forward (Vf) (Max) @ If	750 mV @ 1 A	mV
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	ns
Current - Reverse Leakage @ Vr	200	µA @ 50 V
Mounting Type	Surface Mount	—
Package / Case	DO-214AC, SMA	—
Operating Temperature - Junction	-65 to 150	°C
Technology	Schottky	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the B150-E3/5AT is determined by the following critical parameters:

Primary Substitution Criteria:

Voltage - DC Reverse (Vr) (Max): 50 V or higher
Current - Average Rectified (Io): 1 A
Technology: Schottky
Mounting Type: Surface Mount
Package / Case: DO-214AC, SMA
Operating Temperature Range: Must encompass or exceed -65°C to 150°C

Parametric Equivalent Parts maintain identical electrical specifications and are sourced from the same manufacturer (Vishay) with different tape reel configurations or base product designations. These parts are direct functional replacements with no derating required.

Manufacturer Recommended Substitutes from alternative suppliers (Diodes Incorporated, Comchip Technology, onsemi, SMC Diode Solutions, Micro Commercial Co, Taiwan Semiconductor Corporation) are qualified alternatives that meet the core electrical requirements. Some substitutes operate at lower voltage ratings (40 V) or exhibit different forward voltage characteristics and leakage currents, requiring circuit-level compatibility verification.

Voltage Derating Consideration: Substitutes rated at 40 V (B140Q-13-F, CDBA140LL-HF, MBRA140T3G, SS14-LTP) are suitable only in applications where the maximum reverse voltage does not exceed 40 V. The primary part B150-E3/5AT and its 50 V equivalents are required for circuits operating at voltages between 40 V and 50 V.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Vr (Max) [V]	Io [A]	Vf (Max) @ 1A [mV]	Ir @ Vr [µA]	Tj (Min-Max) [°C]	Package	Packaging Type
B150-E3/5AT	Vishay	50	1	750	200 @ 50V	-65 to 150	DO-214AC, SMA	Tape & Reel (TR)
B150-E3/61T	Vishay	50	1	750	200 @ 50V	-65 to 150	DO-214AC, SMA	Tape & Reel (TR)
B150-M3/61T	Vishay	50	1	750	200 @ 50V	-65 to 150	DO-214AC, SMA	Cut Tape (CT) & Digi-Reel®
SS15-E3/61T	Vishay	50	1	750	200 @ 50V	-65 to 150	DO-214AC, SMA	Cut Tape (CT) & Digi-Reel®
B150Q-13-F	Diodes Incorporated	50	1	700	500 @ 40V	-65 to 150	DO-214AC, SMA	Tape & Reel (TR)
B140Q-13-F	Diodes Incorporated	40	1	500	500 @ 40V	-65 to 150	DO-214AC, SMA	Cut Tape (CT) & Digi-Reel®
SS15	Taiwan Semiconductor Corporation	50	1	750	200 @ 50V	-55 to 150	DO-214AC, SMA	—
SS14	SMC Diode Solutions	100	1	850	500 @ 100V	-55 to 150	DO-214AC, SMA	Cut Tape (CT) & Digi-Reel®
SS14-LTP	Micro Commercial Co	40	1	500	500 @ 40V	-55 to 125	DO-214AC, SMA	Tape & Reel (TR)
CDBA140LL-HF	Comchip Technology	40	1	350	1000 @ 40V	-50 to 100	DO-214AC, SMA	Tape & Reel (TR)
MBRA140T3G	onsemi	40	1	550	500 @ 40V	-55 to 125	DO-214AC, SMA	Cut Tape (CT) & Digi-Reel®

Engineering Selection Recommendations

Direct Parametric Equivalents (Preferred for Drop-In Replacement):

B150-E3/61T, B150-M3/61T, and SS15-E3/61T are parametric equivalents of B150-E3/5AT. These parts maintain identical electrical specifications (50 V, 1 A, 750 mV forward voltage, 200 µA reverse leakage) and are suitable for direct substitution. Differences are limited to packaging configuration (Tape & Reel versus Cut Tape & Digi-Reel) and manufacturer sourcing. All are ROHS3 compliant with MSL 1 rating.

50 V Rated Alternatives from Other Manufacturers:

B150Q-13-F (Diodes Incorporated) and SS15 (Taiwan Semiconductor Corporation) are rated at 50 V and 1 A, matching the primary voltage specification. B150Q-13-F exhibits lower forward voltage (700 mV versus 750 mV) and includes AEC-Q101 automotive qualification. SS15 maintains identical forward voltage and reverse leakage characteristics. Both are ROHS3 compliant. Operating temperature range for SS15 is -55°C to 150°C, which does not extend to the lower -65°C limit of the primary part.

40 V Rated Alternatives (Voltage Derating Required):

B140Q-13-F, SS14-LTP, CDBA140LL-HF, and MBRA140T3G are rated at 40 V maximum reverse voltage. These substitutes are applicable only in circuits where the maximum reverse voltage does not exceed 40 V. CDBA140LL-HF exhibits the lowest forward voltage (350 mV) but operates at a reduced temperature range (-50°C to 100°C) and higher reverse leakage (1 mA @ 40 V). MBRA140T3G and SS14-LTP operate at -55°C to 125°C and -55°C to 125°C respectively, both below the primary part's lower temperature limit.

Over-Voltage Rated Alternative:

SS14 (SMC Diode Solutions) is rated at 100 V, providing margin above the 50 V specification. Forward voltage is higher (850 mV versus 750 mV) and reverse leakage is elevated (500 µA @ 100 V versus 200 µA @ 50 V). This part is suitable for applications requiring higher voltage margin but introduces increased power dissipation due to higher forward voltage drop.

Compliance and Certification:

All listed parts are ROHS3 compliant and carry MSL 1 (Unlimited) moisture sensitivity rating. B150Q-13-F and B140Q-13-F include AEC-Q101 automotive qualification. REACH status varies: Vishay parts are REACH Unaffected; SMC Diode Solutions SS14 is REACH Affected.

Frequently Asked Questions (FAQ)

Q: Can B150Q-13-F (Diodes Incorporated) be used as a direct replacement for B150-E3/5AT?

A: B150Q-13-F is a functional equivalent rated at 50 V and 1 A with identical package (DO-214AC, SMA) and operating temperature range (-65°C to 150°C). Forward voltage is 700 mV versus 750 mV, representing a 50 mV improvement. This part includes AEC-Q101 automotive qualification. Substitution is valid for applications where the lower forward voltage is acceptable or beneficial.

Q: What is the difference between B150-E3/5AT and B150-E3/61T?

A: Both parts are manufactured by Vishay and maintain identical electrical specifications (50 V, 1 A, 750 mV forward voltage, 200 µA reverse leakage). The difference is in the tape reel configuration code (5AT versus 61T). Both are ROHS3 compliant with MSL 1 rating. Selection between these parts is based on packaging procurement requirements.

Q: Can SS14-LTP (40 V rated) replace B150-E3/5AT (50 V rated)?

A: SS14-LTP is suitable only in applications where the maximum reverse voltage does not exceed 40 V. If the circuit operates at voltages between 40 V and 50 V, SS14-LTP will be overstressed and is not an acceptable substitute. For circuits operating below 40 V, SS14-LTP is functionally compatible with identical 1 A current rating and fast recovery speed.

Q: Why does CDBA140LL-HF have a lower forward voltage (350 mV) compared to B150-E3/5AT (750 mV)?

A: CDBA140LL-HF is manufactured by Comchip Technology and exhibits different semiconductor junction characteristics, resulting in lower forward voltage drop. While this reduces power dissipation, CDBA140LL-HF is rated at 40 V (not 50 V) and operates at a reduced temperature range (-50°C to 100°C). Additionally, reverse leakage is significantly higher (1 mA @ 40 V versus 200 µA @ 50 V). Substitution requires verification that the application voltage does not exceed 40 V and that the higher leakage current is acceptable.

Q: Is SS15 (Taiwan Semiconductor Corporation) equivalent to B150-E3/5AT?

A: SS15 maintains identical electrical specifications (50 V, 1 A, 750 mV forward voltage, 200 µA reverse leakage) and package (DO-214AC, SMA). The operating temperature range is -55°C to 150°C, which does not extend to the lower -65°C limit of B150-E3/5AT. For applications operating above -55°C, SS15 is a functional equivalent. For applications requiring operation at -65°C, B150-E3/5AT or its Vishay equivalents are required.

Q: What is the advantage of SS14 (100 V rated) over B150-E3/5AT (50 V rated)?

A: SS14 provides a 2× voltage margin (100 V versus 50 V), offering protection against transient overvoltage conditions. However, forward voltage is higher (850 mV versus 750 mV), resulting in increased power dissipation and heat generation. Reverse leakage is also elevated (500 µA @ 100 V versus 200 µA @ 50 V). SS14 is appropriate for applications where voltage margin is critical and the increased power dissipation is acceptable.

Q: Are all substitute parts available in the same DO-214AC (SMA) package?

A: All listed substitute parts are available in DO-214AC (SMA) surface mount package, ensuring mechanical and footprint compatibility with B150-E3/5AT. Packaging configurations (Tape & Reel, Cut Tape & Digi-Reel) vary by manufacturer and part number but do not affect the component's physical dimensions or PCB mounting characteristics.

Q: Which substitute parts include automotive qualification?

A: B150Q-13-F and B140Q-13-F (both from Diodes Incorporated) include AEC-Q101 automotive qualification. These parts are suitable for automotive and industrial applications requiring formal qualification documentation. Other listed parts do not carry explicit automotive qualification but are ROHS3 compliant and suitable for general industrial applications.

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