ES3G V7G Equivalent & Substitute Parts

Part Overview

The ES3G V7G is a general-purpose rectifier diode rated for 400 V DC reverse voltage and 3 A average rectified current in a DO-214AB (SMC) surface mount package. Manufactured by Taiwan Semiconductor Corporation, this component is classified as discontinued at DiGi Electronics. The fast recovery characteristic with a reverse recovery time of 35 ns qualifies it for applications requiring rapid switching performance in power conversion circuits.

Identification of equivalent and substitute parts is necessary due to the discontinued product status. Alternative sources from active manufacturers provide functional equivalents that maintain the core electrical specifications while offering continued supply availability and compliance certifications.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	400	V
Current - Average Rectified (Io)	3	A
Voltage - Forward (Vf) (Max) @ If	1.3 @ 3 A	V
Reverse Recovery Time (trr)	35	ns
Current - Reverse Leakage @ Vr	10	µA @ 400 V
Speed Classification	Fast Recovery ≤ 500ns, > 200mA (Io)	—
Package / Case	DO-214AB, SMC	—
Mounting Type	Surface Mount	—
Operating Temperature - Junction	-55 to 150	°C
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution of the ES3G V7G is determined by strict equivalence in the following electrical and mechanical parameters:

Primary Equivalence Criteria:

Voltage - DC Reverse (Vr) (Max): 400 V
Current - Average Rectified (Io): 3 A
Package / Case: DO-214AB, SMC
Mounting Type: Surface Mount
Operating Temperature Range: -55°C to 150°C minimum

Secondary Compatibility Parameters:

Voltage - Forward (Vf) (Max): 1.3 V or lower at rated current
Reverse Recovery Time (trr): ≤ 500 ns (fast recovery classification)
Current - Reverse Leakage @ Vr: ≤ 10 µA @ 400 V

Parts are grouped into three categories based on their relationship to the main part:

Direct Manufacturer Equivalent: Parts from different manufacturers with identical electrical specifications and packaging.

Parametric Equivalent: Parts with matching primary criteria but variations in secondary parameters such as reverse recovery time or capacitance. These parts maintain functional compatibility within the specified operating envelope.

Similar Parts: Components meeting the primary electrical and mechanical requirements but with minor deviations in forward voltage or temperature range that do not compromise circuit operation.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Vr (Max) [V]	Io [A]	Vf (Max) [V]	trr [ns]	Ir @ Vr [µA]	Package	Status	RoHS
ES3G V7G	Taiwan Semiconductor Corporation	400	3	1.3 @ 3 A	35	10 @ 400 V	DO-214AB	Discontinued	ROHS3
ES3G	SURGE	400	3	1.3 @ 3 A	35	10 @ 400 V	DO-214AB	Active	ROHS3
ES3GH	Taiwan Semiconductor Corporation	400	3	1.3 @ 3 A	35	10 @ 400 V	DO-214AB	Active	ROHS3
HS3G R7G	Taiwan Semiconductor Corporation	400	3	1.3 @ 3 A	50	10 @ 400 V	DO-214AB	Discontinued	ROHS3
HS3G V7G	Taiwan Semiconductor Corporation	400	3	1.3 @ 3 A	50	10 @ 400 V	DO-214AB	Discontinued	ROHS3
UFS340J/TR13	Microchip Technology	400	3	1.1 @ 3 A	50	10 @ 400 V	DO-214AB	Active	Non-compliant
RS3G-E3/57T	Vishay General Semiconductor - Diodes Division	400	3	1.3 @ 2.5 A	150	10 @ 400 V	DO-214AB	Active	ROHS3
RS3G-E3/9AT	Vishay General Semiconductor - Diodes Division	400	3	1.3 @ 2.5 A	150	10 @ 400 V	DO-214AB	Active	ROHS3
RS3G-M3/57T	Vishay General Semiconductor - Diodes Division	400	3	1.3 @ 2.5 A	150	10 @ 400 V	DO-214AB	Active	ROHS3
RS3G-M3/9AT	Vishay General Semiconductor - Diodes Division	400	3	1.3 @ 2.5 A	150	10 @ 400 V	DO-214AB	Active	ROHS3
RS3GC-HF	Comchip Technology	400	3	1.3 @ 3 A	150	5 @ 400 V	DO-214AB	Active	ROHS3

Engineering Selection Recommendations

Highest Compatibility - Direct Replacement:

The ES3G from SURGE manufacturer provides direct electrical and mechanical equivalence to the ES3G V7G. This part maintains identical specifications across all primary parameters including reverse recovery time of 35 ns, forward voltage of 1.3 V at 3 A, and reverse leakage current of 10 µA at 400 V. The part is currently active with ROHS3 compliance and unlimited moisture sensitivity level (MSL 1).

The ES3GH from Taiwan Semiconductor Corporation offers equivalent performance with active product status and AEC-Q101 automotive qualification. This variant is supplied in Tape & Reel packaging and maintains the same electrical characteristics as the original part.

Active Alternatives with Extended Availability:

The RS3G series from Vishay General Semiconductor (part numbers RS3G-E3/57T, RS3G-E3/9AT, RS3G-M3/57T, RS3G-M3/9AT) provides parametric equivalence with active product status. These parts maintain the 400 V / 3 A rating and DO-214AB packaging. The reverse recovery time specification of 150 ns represents a longer switching time compared to the original 35 ns, which is acceptable in applications where switching speed is not the limiting design factor. All variants carry ROHS3 compliance.

The RS3GC-HF from Comchip Technology meets all primary electrical requirements with the added benefit of reduced reverse leakage current (5 µA at 400 V versus 10 µA). This part is active and ROHS3 compliant.

Alternative with Compliance Consideration:

The UFS340J/TR13 from Microchip Technology is an active product meeting the 400 V / 3 A specifications with improved forward voltage performance (1.1 V at 3 A). However, this part carries RoHS non-compliant status, which may restrict its use in applications requiring RoHS certification. The reverse recovery time of 50 ns falls between the original specification and the Vishay variants.

Discontinued Alternatives:

The HS3G R7G and HS3G V7G variants from Taiwan Semiconductor Corporation are discontinued at DiGi Electronics and should not be selected for new designs despite meeting electrical specifications.

Frequently Asked Questions (FAQ)

Q: Can the ES3G from SURGE be used as a direct replacement for the ES3G V7G?

A: Yes. The ES3G from SURGE is electrically and mechanically identical to the ES3G V7G across all specified parameters. Both parts are rated for 400 V reverse voltage, 3 A average rectified current, and feature a 35 ns reverse recovery time in DO-214AB packaging. The primary difference is packaging format (Bag versus Cut Tape) and active product status of the SURGE variant.

Q: What is the significance of reverse recovery time differences between the original part and alternatives?

A: Reverse recovery time (trr) determines how quickly the diode transitions from conducting to blocking state. The original ES3G V7G specifies 35 ns. Alternatives such as the RS3G series specify 150 ns. In applications where switching frequency is high or where switching losses are critical, the longer recovery time may increase power dissipation. In lower-frequency applications or where switching speed is not a design constraint, the longer recovery time does not impact circuit performance.

Q: Are all substitute parts RoHS compliant?

A: Most substitute parts carry ROHS3 compliance status. The exception is the UFS340J/TR13 from Microchip Technology, which is RoHS non-compliant. Selection should account for end-product RoHS requirements.

Q: What packaging options are available for equivalent parts?

A: The ES3G V7G is supplied in Cut Tape (CT) packaging. Equivalent parts are available in multiple packaging formats: Bag (ES3G from SURGE), Tape & Reel (TR) for ES3GH, RS3G series variants, and RS3GC-HF. Tape & Reel packaging is standard for high-volume production. Cut Tape and Bag formats are suitable for lower-volume applications. All variants use the same DO-214AB (SMC) component package.

Q: Can the RS3G series parts be used interchangeably with the original ES3G V7G?

A: The RS3G series parts meet the primary electrical requirements (400 V, 3 A, DO-214AB package) and are suitable for most applications. The key difference is the reverse recovery time of 150 ns versus 35 ns in the original part. This longer recovery time is acceptable in applications where switching frequency is below approximately 100 kHz or where switching losses are not the primary design constraint. For high-frequency switching applications, the original specification or the ES3G equivalent from SURGE is preferred.

Q: What is the difference between ES3GH and ES3G V7G?

A: The ES3GH is an automotive-qualified variant (AEC-Q101) of the same base design. Electrical specifications are identical. The ES3GH is supplied in Tape & Reel packaging and carries active product status. Selection of the ES3GH is appropriate for automotive applications requiring AEC-Q101 qualification or for general applications where Tape & Reel packaging is preferred.

Q: Does the RS3GC-HF offer any advantages over other alternatives?

A: The RS3GC-HF features reduced reverse leakage current (5 µA at 400 V versus 10 µA in the original part). This lower leakage may provide marginal benefits in high-impedance circuits or applications sensitive to leakage current. The part is active and ROHS3 compliant. The reverse recovery time of 150 ns is consistent with other Vishay alternatives.

Q: Why is the UFS340J/TR13 listed as an alternative if it is RoHS non-compliant?

A: The UFS340J/TR13 meets all primary electrical and mechanical specifications and is currently active in production. It is included for reference in applications where RoHS compliance is not required. The improved forward voltage specification (1.1 V at 3 A) may provide lower power dissipation in some circuit topologies. Selection should be based on specific application requirements and compliance mandates.

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