MBRA320T3G Equivalent & Substitute Parts

Part Overview

The MBRA320T3G is a Schottky rectifier diode manufactured by onsemi, rated for 20 V DC reverse voltage and 3 A average rectified current in a surface mount SMA (DO-214AC) package. This component is classified as Last Time Buy, indicating discontinued production status. Identification of equivalent and substitute parts is necessary to ensure design continuity and procurement availability for applications requiring Schottky diode functionality in this voltage and current class.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	20	V
Current - Average Rectified (Io)	3	A
Voltage - Forward (Vf) (Max) @ If	500 mV @ 3 A	mV
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	ns
Current - Reverse Leakage @ Vr	2	mA @ 20 V
Package / Case	DO-214AC, SMA	—
Mounting Type	Surface Mount	—
Operating Temperature - Junction	-65°C ~ 125°C	°C
Technology	Schottky	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution of the MBRA320T3G is determined by the following critical parameters: voltage rating (20 V DC reverse), current rating (3 A average rectified), forward voltage drop (500 mV maximum at 3 A), recovery speed classification (fast recovery ≤ 500ns), package type (DO-214AC/SMA), and mounting configuration (surface mount). Parts are grouped into three categories based on parametric alignment:

Parametric Equivalents maintain identical electrical specifications across all critical parameters and are manufactured by onsemi under the NRVBA320 base product line. These parts satisfy direct replacement requirements without circuit redesign.

Direct Manufacturer Alternatives originate from different manufacturers but maintain the same voltage and current ratings with compatible package specifications. These parts may exhibit variations in forward voltage, reverse leakage, or temperature range that require circuit-level evaluation.

Similar Alternatives provide comparable functionality within the same voltage class but may differ in current rating, recovery speed classification, or package variant. These parts are suitable for applications with relaxed performance requirements or where higher voltage ratings provide design margin.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Vr (Max) [V]	Io [A]	Vf (Max) @ If [mV]	Speed Classification	Ir @ Vr [mA]	Package	Product Status	Grade
MBRA320T3G	onsemi	20	3	500 @ 3A	Fast Recovery ≤ 500ns	2 @ 20V	DO-214AC, SMA	Last Time Buy	—
NRVBA320NT3G	onsemi	20	3	500 @ 3A	Fast Recovery ≤ 500ns	2 @ 20V	DO-214AC, SMA	Active	Automotive (AEC-Q101)
NRVBA320T3G	onsemi	20	3	500 @ 3A	Fast Recovery ≤ 500ns	2 @ 20V	DO-214AC, SMA	Active	Automotive (AEC-Q101)
NRVBA320T3G-VF01	onsemi	20	3	500 @ 3A	Fast Recovery ≤ 500ns	2 @ 20V	DO-214AC, SMA	Active	Automotive (AEC-Q101)
B330LA-M3/61T	Vishay General Semiconductor - Diodes Division	30	3	500 @ 3A	Fast Recovery ≤ 500ns	500 µA @ 30V	DO-214AC, SMA	Active	—
B320A-13-F	Diodes Incorporated	20	3	500 @ 3A	Fast Recovery ≤ 500ns	500 µA @ 20V	DO-214AC, SMA	Active	Automotive (AEC-Q101)
PMEG3020EP,115	Nexperia USA Inc.	30	2	360 @ 2A	Fast Recovery ≤ 500ns	3 mA @ 30V	SOD-128	Active	—
SK32A	SMC Diode Solutions	20	3	550 @ 3A	Standard Recovery > 500ns	1 mA @ 20V	DO-214AC, SMA	Active	—
SSA33L-E3/61T	Vishay General Semiconductor - Diodes Division	30	3	450 @ 3A	Fast Recovery ≤ 500ns	500 µA @ 30V	DO-214AC, SMA	Active	—
SX32_R1_00001	Panjit International Inc.	20	3	500 @ 3A	Fast Recovery ≤ 500ns	200 µA @ 20V	DO-214AC, SMA	Active	—

Engineering Selection Recommendations

Parametric Equivalents (Recommended Primary Substitutes):

The NRVBA320T3G, NRVBA320NT3G, and NRVBA320T3G-VF01 manufactured by onsemi provide direct parametric equivalence to the MBRA320T3G across all critical electrical specifications. These parts maintain identical voltage rating (20 V), current rating (3 A), forward voltage (500 mV @ 3 A), and recovery speed classification. All three variants carry Active product status, ensuring long-term availability. NRVBA320T3G and NRVBA320T3G-VF01 are qualified to AEC-Q101 automotive standards, providing enhanced reliability documentation for applications requiring automotive-grade components. NRVBA320NT3G also carries AEC-Q101 qualification. These parts are suitable for direct circuit substitution without modification.

Direct Manufacturer Alternatives:

The B320A-13-F manufactured by Diodes Incorporated maintains identical electrical specifications (20 V, 3 A, 500 mV @ 3 A, fast recovery) and carries AEC-Q101 automotive qualification. Reverse leakage current is specified at 500 µA @ 20 V, compared to 2 mA for the MBRA320T3G. This lower leakage characteristic is beneficial for low-power standby applications. The part is in Active status with high inventory availability (35,100 units).

The SX32_R1_00001 manufactured by Panjit International Inc. provides identical voltage and current ratings with matching forward voltage and fast recovery speed classification. Reverse leakage is specified at 200 µA @ 20 V, representing intermediate leakage performance. This part is in Active status with adequate inventory (1,815 units).

Higher Voltage Alternatives:

The B330LA-M3/61T and SSA33L-E3/61T both provide 30 V reverse voltage rating with 3 A current capacity. These parts are suitable for applications where higher voltage margin is required. B330LA-M3/61T maintains 500 mV forward voltage, while SSA33L-E3/61T offers improved forward voltage at 450 mV @ 3 A. Both parts are in Active status with substantial inventory availability. Operating temperature range extends to 150°C for both parts, compared to 125°C for the MBRA320T3G.

Lower Current Alternative:

The PMEG3020EP,115 manufactured by Nexperia USA Inc. provides 30 V reverse voltage with 2 A current rating in SOD-128 package. This part is suitable only for applications where current requirements do not exceed 2 A. Forward voltage is specified at 360 mV @ 2 A, representing superior efficiency at reduced current levels. Package change from DO-214AC to SOD-128 requires PCB layout modification.

Non-Recommended Alternative:

The SK32A manufactured by SMC Diode Solutions exhibits recovery speed classification of Standard Recovery (> 500ns), compared to Fast Recovery (≤ 500ns) for the MBRA320T3G. Forward voltage is specified at 550 mV @ 3 A, representing 50 mV higher drop. This part is suitable only for applications where recovery speed is not performance-critical.

Frequently Asked Questions (FAQ)

Q: Can NRVBA320T3G directly replace MBRA320T3G without circuit modification?

A: Yes. The NRVBA320T3G maintains identical electrical specifications across voltage rating (20 V), current rating (3 A), forward voltage (500 mV @ 3 A), recovery speed (fast recovery ≤ 500ns), and package configuration (DO-214AC/SMA). Direct substitution is supported without circuit redesign.

Q: What is the difference between NRVBA320T3G and NRVBA320NT3G?

A: Both parts maintain identical electrical specifications and AEC-Q101 automotive qualification. The primary distinction is product designation; both are suitable for direct substitution of the MBRA320T3G.

Q: Why is B330LA-M3/61T listed as a substitute if it has 30 V rating instead of 20 V?

A: The B330LA-M3/61T provides higher voltage margin (30 V vs. 20 V) while maintaining identical current rating (3 A) and forward voltage (500 mV @ 3 A). This part is suitable for applications where the circuit operates below 20 V and higher voltage rating provides design margin. The higher voltage rating does not create incompatibility; it provides additional safety margin.

Q: Can B320A-13-F be used in place of MBRA320T3G?

A: Yes. The B320A-13-F maintains identical voltage (20 V), current (3 A), forward voltage (500 mV @ 3 A), and recovery speed specifications. Reverse leakage is specified at 500 µA @ 20 V compared to 2 mA for the MBRA320T3G, representing lower leakage performance. This part is suitable for direct substitution and carries AEC-Q101 automotive qualification.

Q: What is the significance of the forward voltage difference between SSA33L-E3/61T (450 mV) and MBRA320T3G (500 mV)?

A: The SSA33L-E3/61T exhibits 50 mV lower forward voltage drop at 3 A, resulting in reduced power dissipation and improved efficiency. This characteristic is beneficial for high-current or thermally constrained applications. The lower forward voltage does not create incompatibility; it represents improved performance.

Q: Why is SK32A not recommended as a primary substitute?

A: The SK32A is classified as Standard Recovery (> 500ns) compared to the MBRA320T3G Fast Recovery (≤ 500ns) specification. Additionally, forward voltage is specified at 550 mV @ 3 A, representing 50 mV higher drop. This part is suitable only for applications where recovery speed performance is not critical.

Q: Can PMEG3020EP,115 replace MBRA320T3G?

A: The PMEG3020EP,115 is suitable only for applications where current requirements do not exceed 2 A. This part provides 30 V reverse voltage with 2 A current rating, compared to 3 A for the MBRA320T3G. Package change from DO-214AC to SOD-128 requires PCB layout modification. This part is not recommended for applications requiring full 3 A current capacity.

Q: What does AEC-Q101 qualification indicate?

A: AEC-Q101 is an automotive industry qualification standard for discrete semiconductors. Parts carrying this qualification have undergone enhanced reliability testing and documentation suitable for automotive applications. NRVBA320T3G, NRVBA320NT3G, NRVBA320T3G-VF01, and B320A-13-F all carry AEC-Q101 qualification.

Q: Is the MBRA320T3G still available for procurement?

A: The MBRA320T3G is classified as Last Time Buy, indicating discontinued production. Parametric equivalents such as NRVBA320T3G are in Active status with ongoing availability. Procurement should transition to active alternatives to ensure long-term supply continuity.

Q: What is the difference between Tape & Reel (TR) and Cut Tape (CT) packaging?

A: Tape & Reel packaging supplies components on continuous tape suitable for high-volume automated assembly. Cut Tape packaging supplies components on tape segments suitable for lower-volume or manual assembly. Both packaging formats contain identical components; packaging selection depends on assembly volume and equipment capability.

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