ES3G Equivalent & Substitute Parts Reference

Part Overview

The ES3G is a general-purpose rectifier diode manufactured by SMC Diode Solutions, rated for 400 V DC reverse voltage and 3 A average rectified current in a Surface Mount SMC (DO-214AB) package. This part is classified as Obsolete, making identification of equivalent and substitute components necessary for ongoing design support, production continuity, and component sourcing.

The ES3G operates across a junction temperature range of -55°C to 150°C and features fast recovery characteristics with a reverse recovery time of 35 nanoseconds. With 33,900 pieces currently in stock, alternative sources and equivalent parts are available from active manufacturers to ensure long-term supply chain reliability.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	400	V
Current - Average Rectified (Io)	3	A
Voltage - Forward (Vf) (Max) @ If	1.25 @ 3 A	V
Reverse Recovery Time (trr)	35	ns
Current - Reverse Leakage @ Vr	5	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
Technology	Standard	—

Substitute Part Grouping Explanation

Substitution of the ES3G is determined by strict equivalence across the following critical parameters:

Mandatory Equivalence Criteria:

Voltage - DC Reverse (Vr) (Max): 400 V
Current - Average Rectified (Io): 3 A
Voltage - Forward (Vf) (Max) @ If: 1.25 V @ 3 A
Package / Case: DO-214AB, SMC
Mounting Type: Surface Mount
Technology: Standard

Acceptable Variation Parameters:

Reverse Recovery Time (trr): 30–35 ns (within fast recovery classification)
Current - Reverse Leakage @ Vr: 1–10 µA @ 400 V
Operating Temperature - Junction: -50°C to -55°C minimum; 150°C maximum
Capacitance @ Vr, F: Variation permitted when not specified

All substitute parts listed meet or exceed the electrical performance requirements of the ES3G and are compatible with existing PCB layouts and assembly processes using the DO-214AB footprint.

Parameter Comparison

Parameter	ES3G (SMC)	ER3G (Diotec)	ER3G_R1_00001 (Panjit)	ES3GC (MDD)	ES3GC-HF (Comchip)	MC03FA40-TE16L (KYOCERA AVX)
Voltage - DC Reverse (Vr) (Max)	400 V	400 V	400 V	400 V	400 V	400 V
Current - Average Rectified (Io)	3 A	3 A	3 A	3 A	3 A	3 A
Voltage - Forward (Vf) (Max) @ If	1.25 V @ 3 A	1.25 V @ 3 A	1.25 V @ 3 A	1.25 V @ 3 A	1.25 V @ 3 A	1.25 V @ 3 A
Reverse Recovery Time (trr)	35 ns	35 ns	35 ns	35 ns	35 ns	30 ns
Current - Reverse Leakage @ Vr	5 µA @ 400 V	5 µA @ 400 V	1 µA @ 400 V	5 µA @ 400 V	5 µA @ 400 V	10 µA @ 400 V
Capacitance @ Vr, F	45 pF @ 4V, 1MHz	—	45 pF @ 4V, 1MHz	—	40 pF @ 4V, 1MHz	—
Package / Case	DO-214AB, SMC	DO-214AB, SMC	DO-214AB, SMC	DO-214AB, SMC	DO-214AB, SMC	DO-214AB, SMC
Operating Temperature - Junction	-55 to 150°C	-50 to 150°C	-55 to 150°C	-55 to 150°C	-55 to 150°C	-55 to 150°C
Product Status	Obsolete	Active	Active	Active	Active	Active
RoHS Status	—	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	Not Applicable	1 (Unlimited)	—	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

Direct Manufacturer Equivalents (Highest Compatibility):

The ER3G from Diotec Semiconductor is a direct manufacturer equivalent with identical electrical specifications to the ES3G. This part is currently in Active product status with 19,784 pieces in stock. The ER3G is ROHS3 compliant and carries the same ECCN and HTSUS classifications. The operating temperature range is -50°C to 150°C, which covers the majority of applications requiring the ES3G's -55°C to 150°C range, with the exception of the lower temperature extreme.

Parametric Equivalents with Enhanced Performance:

The ER3G_R1_00001 from Panjit International Inc. is a parametric equivalent supplied in Tape & Reel packaging. This part demonstrates superior reverse leakage characteristics at 1 µA @ 400 V compared to the ES3G's 5 µA specification. It maintains identical voltage, current, and recovery time ratings while offering ROHS3 compliance and MSL 1 classification. With 5,690 pieces in stock, this part is suitable for applications requiring lower leakage performance.

The ES3GC from MDD is an Active product available in Tape & Reel packaging with 2,200 pieces in stock. It meets all electrical specifications of the ES3G and is ROHS3 compliant with REACH Unaffected status.

The ES3GC-HF from Comchip Technology is an Active product with 698 pieces in stock. This variant features a slightly lower capacitance specification of 40 pF @ 4V, 1MHz compared to the ES3G's 45 pF, which may provide marginal benefits in high-frequency switching applications. ROHS3 compliance and MSL 1 classification are confirmed.

Alternative with Improved Recovery Characteristics:

The MC03FA40-TE16L from KYOCERA AVX features a reverse recovery time of 30 nanoseconds, which is 5 nanoseconds faster than the ES3G. This part is supplied in nSMC_FL package variant and is available with 8,245 pieces in stock. The reverse leakage specification is 10 µA @ 400 V, which is within acceptable tolerance. ROHS3 compliance and MSL 1 classification apply. This part is suitable for applications where improved switching speed provides system-level benefits.

Compliance and Certification Status:

All substitute parts carry ROHS3 compliance and EAR99 ECCN classification, matching the ES3G's regulatory profile. REACH status varies: ER3G requires request for information, while ER3G_R1_00001, ES3GC, ES3GC-HF, and MC03FA40-TE16L are REACH Unaffected.

Frequently Asked Questions (FAQ)

Q: Can the ER3G from Diotec replace the ES3G in all applications?

A: The ER3G is electrically equivalent across all critical parameters: 400 V reverse voltage, 3 A average rectified current, 1.25 V forward voltage, and 35 ns recovery time. The operating temperature range is -50°C to 150°C, which covers standard industrial and commercial applications. Applications requiring operation below -50°C require evaluation of the ER3G_R1_00001, ES3GC, ES3GC-HF, or MC03FA40-TE16L, which support -55°C minimum junction temperature.

Q: What is the difference between the ES3GC and ES3GC-HF variants?

A: Both parts are parametric equivalents with identical voltage, current, and recovery time specifications. The ES3GC-HF features a capacitance specification of 40 pF @ 4V, 1MHz compared to the ES3GC's unspecified capacitance. The ES3GC-HF designation indicates optimization for high-frequency applications where lower junction capacitance reduces switching losses and improves transient response.

Q: Is the MC03FA40-TE16L suitable as a direct replacement?

A: The MC03FA40-TE16L meets all mandatory electrical equivalence criteria and is pin-compatible with the DO-214AB footprint. The 30 ns reverse recovery time is superior to the ES3G's 35 ns specification. The reverse leakage specification of 10 µA @ 400 V is within acceptable tolerance. This part is suitable for direct replacement in new designs and existing applications where improved switching performance is beneficial.

Q: What packaging options are available for these substitute parts?

A: The ER3G is supplied in standard SMC (DO-214AB) packaging. The ER3G_R1_00001, ES3GC, ES3GC-HF, and MC03FA40-TE16L are supplied in Tape & Reel (TR) packaging, which is standard for automated assembly processes. All parts use the DO-214AB footprint and are compatible with existing PCB designs.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All substitute parts listed—ER3G, ER3G_R1_00001, ES3GC, ES3GC-HF, and MC03FA40-TE16L—are ROHS3 compliant. The ES3G does not specify RoHS status. All parts carry EAR99 ECCN and 8541.10.0080 HTSUS classifications.

Q: Which substitute part has the lowest reverse leakage current?

A: The ER3G_R1_00001 from Panjit International Inc. specifies 1 µA @ 400 V reverse leakage, which is the lowest among all listed parts. This part is suitable for applications requiring minimal leakage current, such as precision analog circuits or high-impedance measurement systems.

Q: What is the inventory status of each substitute part?

A: Current inventory levels are as follows: ER3G (19,784 pcs), MC03FA40-TE16L (8,245 pcs), ER3G_R1_00001 (5,690 pcs), ES3GC (2,200 pcs), and ES3GC-HF (698 pcs). The ES3G remains in stock with 33,900 pieces available.

Q: Can these parts be used interchangeably in existing designs?

A: All substitute parts are pin-compatible and electrically equivalent within the specified parameter tolerances. PCB layouts designed for the DO-214AB footprint accommodate all listed parts without modification. Thermal design and circuit performance remain consistent across all equivalents when electrical specifications are met.

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