ES2A Equivalent & Substitute Parts

Part Overview

The ES2A is a general-purpose rectifier diode manufactured by onsemi, rated for 50 V DC reverse voltage and 2 A average rectified current in a DO-214AA (SMB) surface mount package. This part is classified as "Not For New Designs," indicating it has reached end-of-life status. The fast recovery characteristic (≤500 ns) and 20 ns reverse recovery time support applications requiring rapid switching performance. Identification of equivalent and substitute parts is necessary to support existing designs, facilitate production continuity, and enable migration to active product alternatives.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	50	V
Current - Average Rectified (Io)	2	A
Voltage - Forward (Vf) (Max) @ If	900 mV @ 2 A	mV
Reverse Recovery Time (trr)	20	ns
Current - Reverse Leakage @ Vr	10	µA @ 50 V
Package / Case	DO-214AA, SMB	—
Mounting Type	Surface Mount	—
Operating Temperature - Junction	-55 to 150	°C
Technology	Standard	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitute parts for the ES2A are classified into three categories based on electrical and mechanical compatibility:

Direct Equivalents (Identical Electrical & Mechanical Parameters): Parts that match all critical parameters: 50 V reverse voltage, 2 A average rectified current, 900 mV forward voltage at 2 A, DO-214AA (SMB) package, and fast recovery speed. These parts are pin-compatible and functionally interchangeable without circuit modification.

Parametric Equivalents (Matching Electrical Performance, Same Package): Parts that maintain 50 V reverse voltage and 2 A current rating with identical forward voltage and package, but may differ in reverse recovery time or leakage current within acceptable ranges. These parts satisfy the same electrical requirements and use the same DO-214AA (SMB) package.

Reduced Current Alternatives (Lower Current Rating, Same Voltage & Package): Parts rated for 1 A or 1.5 A average rectified current at 50 V in the same DO-214AA (SMB) package. These are suitable only for applications where the circuit current requirement does not exceed the substitute part's rating.

Technology Variants (Schottky Diodes): Schottky technology diodes with different voltage ratings (60 V) and current ratings (1 A) in the same package. These exhibit lower forward voltage but higher reverse leakage current and are suitable only where the application circuit can tolerate these trade-offs.

Parameter Comparison

Part Number	Manufacturer	Vr (Max)	Io	Vf @ If	trr	Ir @ Vr	Package	Status
ES2A	onsemi	50 V	2 A	900 mV @ 2 A	20 ns	10 µA @ 50 V	DO-214AA (SMB)	Not For New Designs
ES2A-E3/5BT	Vishay	50 V	2 A	900 mV @ 2 A	30 ns	10 µA @ 50 V	DO-214AA (SMB)	Active
ES2A-E3/52T	Vishay	50 V	2 A	900 mV @ 2 A	30 ns	10 µA @ 50 V	DO-214AA (SMB)	Active
ES2A-M3/5BT	Vishay	50 V	2 A	900 mV @ 2 A	30 ns	10 µA @ 50 V	DO-214AA (SMB)	Active
ES2A-M3/52T	Vishay	50 V	2 A	900 mV @ 2 A	30 ns	10 µA @ 50 V	DO-214AA (SMB)	Active
CGRB201-G	Comchip Technology	50 V	2 A	1.1 V @ 2 A	—	5 µA @ 50 V	DO-214AA (SMB)	Active
MURS105T3G	onsemi	50 V	1 A	875 mV @ 1 A	35 ns	2 µA @ 50 V	DO-214AA (SMB)	Active
SURS8105T3G-VF01	onsemi	50 V	1 A	875 mV @ 1 A	35 ns	2 µA @ 50 V	DO-214AA (SMB)	Active
RS2A-13-F	Diodes Incorporated	50 V	1.5 A	1.3 V @ 1.5 A	150 ns	5 µA @ 50 V	DO-214AC (SMA)	Active
CMSH1-60 BK PBFREE	Central Semiconductor	60 V	1 A	700 mV @ 1 A	—	500 µA @ 60 V	DO-214AA (SMB)	Active
CMSH1-60 TR13 PBFREE	Central Semiconductor	60 V	1 A	700 mV @ 1 A	—	500 µA @ 60 V	DO-214AA (SMB)	Active

Engineering Selection Recommendations

For Direct Replacement (No Circuit Modification Required):

The Vishay ES2A-E3/5BT, ES2A-E3/52T, ES2A-M3/5BT, and ES2A-M3/52T parts are recommended as primary substitutes. All four parts maintain the 50 V reverse voltage, 2 A current rating, 900 mV forward voltage at 2 A, and DO-214AA (SMB) package. These parts are in Active product status and ROHS3 compliant. The reverse recovery time increases from 20 ns to 30 ns, which remains within fast recovery classification (≤500 ns). Inventory availability ranges from 947 to 7700 pieces.

For Active Product Migration:

The Comchip Technology CGRB201-G provides 50 V, 2 A performance in the same DO-214AA (SMB) package with Active status. Forward voltage is specified at 1.1 V @ 2 A (compared to 900 mV for the ES2A), and reverse recovery time is not specified. This part uses standard recovery technology (>500 ns) rather than fast recovery. Circuit validation is required if switching speed is critical. Inventory: 20,272 pieces.

For Reduced Current Applications (≤1.5 A):

The onsemi MURS105T3G and SURS8105T3G-VF01 are rated for 1 A at 50 V in the DO-214AA (SMB) package with Active status. The SURS8105T3G-VF01 includes AEC-Q101 automotive qualification. These parts are suitable only for circuits where the maximum current requirement does not exceed 1 A. The MURS105T3G is available in Cut Tape & Digi-Reel packaging (10,400 pieces); the SURS8105T3G-VF01 is available in standard packaging (1,057 pieces).

The Diodes Incorporated RS2A-13-F provides 1.5 A at 50 V but uses the DO-214AC (SMA) package instead of DO-214AA (SMB), requiring PCB layout modification. This part is suitable only for applications where package change is acceptable and current does not exceed 1.5 A.

For Schottky Technology (Lower Forward Voltage, Higher Leakage):

The Central Semiconductor CMSH1-60 BK PBFREE and CMSH1-60 TR13 PBFREE are Schottky diodes rated for 60 V, 1 A with 700 mV forward voltage at 1 A. These parts exhibit significantly higher reverse leakage current (500 µA @ 60 V compared to 10 µA for the ES2A). Schottky substitution is appropriate only for applications where lower forward voltage is required and the circuit can tolerate increased leakage current. Both variants are in Active status with ROHS3 compliance.

Frequently Asked Questions (FAQ)

Q: Can I use the MURS105T3G or SURS8105T3G-VF01 as a direct replacement for the ES2A?

A: No. These parts are rated for 1 A average rectified current, while the ES2A is rated for 2 A. Direct substitution is not permitted if the circuit requires 2 A operation. These parts are suitable only for applications where the maximum current does not exceed 1 A.

Q: What is the difference between the Vishay ES2A-E3/5BT and ES2A-M3/5BT?

A: Both parts are electrically identical with 50 V, 2 A, 900 mV forward voltage, and 30 ns reverse recovery time in the DO-214AA (SMB) package. The difference is in the internal device designation (E3 versus M3), which reflects different manufacturing processes or date codes. Both are in Active status and ROHS3 compliant. Either part is suitable for direct replacement.

Q: Why does the CGRB201-G have a higher forward voltage (1.1 V) than the ES2A (900 mV)?

A: The CGRB201-G uses standard recovery technology (>500 ns) rather than fast recovery (≤500 ns). Standard recovery diodes typically exhibit higher forward voltage. The CGRB201-G is suitable for applications where switching speed is not critical and the additional forward voltage drop is acceptable.

Q: Can I use the CMSH1-60 Schottky diodes as a replacement for the ES2A?

A: Schottky substitution requires circuit validation. The CMSH1-60 parts offer lower forward voltage (700 mV versus 900 mV) but are rated for only 1 A (versus 2 A) and exhibit much higher reverse leakage current (500 µA versus 10 µA). Schottky diodes are suitable only if the application can tolerate increased leakage and the current requirement does not exceed 1 A.

Q: Is the RS2A-13-F compatible with the ES2A?

A: The RS2A-13-F is not a direct replacement. It uses the DO-214AC (SMA) package instead of DO-214AA (SMB), requiring PCB layout modification. Additionally, it is rated for 1.5 A (not 2 A) and has a higher forward voltage (1.3 V @ 1.5 A). This part is suitable only for applications where package change is acceptable and current does not exceed 1.5 A.

Q: What is the significance of the "Not For New Designs" status of the ES2A?

A: This status indicates the ES2A has reached end-of-life and is no longer recommended for new product development. Existing designs using the ES2A should migrate to active alternatives such as the Vishay ES2A-E3/5BT, ES2A-E3/52T, ES2A-M3/5BT, or ES2A-M3/52T to ensure long-term supply continuity and support.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All substitute parts listed in this reference are ROHS3 compliant and REACH unaffected, matching the compliance status of the ES2A.

Q: What is the difference between the CMSH1-60 BK PBFREE and CMSH1-60 TR13 PBFREE?

A: Both parts are electrically identical Schottky diodes rated for 60 V, 1 A with 700 mV forward voltage. The difference is in packaging: CMSH1-60 BK PBFREE is supplied in Bulk, while CMSH1-60 TR13 PBFREE is supplied in Tape & Reel (TR). The TR variant has higher inventory availability (7,419 pieces versus 965 pieces).

Q: Can I use multiple lower-current diodes in parallel to replace the ES2A?

A: Parallel connection of diodes is not addressed in this reference and requires separate circuit analysis and thermal management evaluation. Consult application-specific design guidelines for parallel diode configurations.

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