ES2G/1 Equivalent & Substitute Parts

Part Overview

The ES2G/1 is a superfast recovery rectifier diode manufactured by Vishay General Semiconductor - Diodes Division, rated for 400 V DC reverse voltage and 2 A average rectified current in a surface mount DO-214AA (SMB) package. This component is classified as obsolete, indicating discontinuation from the original manufacturer. Identification of equivalent and substitute parts is necessary to maintain design continuity and ensure procurement availability for applications requiring 400 V, 2 A rectification with fast recovery characteristics.

Key Parameters

Parameter	Value
Voltage - DC Reverse (Vr) (Max)	400 V
Current - Average Rectified (Io)	2 A
Voltage - Forward (Vf) (Max) @ If	1.1 V @ 2 A
Speed Classification	Fast Recovery ≤ 500ns, > 200mA (Io)
Reverse Recovery Time (trr)	50 ns
Current - Reverse Leakage @ Vr	10 µA @ 400 V
Package / Case	DO-214AA, SMB
Mounting Type	Surface Mount
Operating Temperature - Junction	-50°C ~ 150°C

Substitute Part Grouping Explanation

Substitution eligibility for the ES2G/1 is determined by the following critical parameters:

Primary Substitution Criteria:

Voltage - DC Reverse (Vr) (Max): 400 V (exact match required)
Package / Case: DO-214AA, SMB (exact match required)
Mounting Type: Surface Mount (exact match required)

Secondary Compatibility Parameters:

Current - Average Rectified (Io): 2 A (exact match preferred; lower ratings acceptable with design verification)
Voltage - Forward (Vf) (Max) @ If: Must not exceed application requirements
Speed Classification: Fast Recovery preferred for equivalent performance; Standard Recovery acceptable with circuit analysis
Operating Temperature - Junction: Must encompass application operating range

Substitute parts are grouped into two categories:

Category A - Direct Equivalents (2 A Rating): Parts maintaining the 2 A current rating with 400 V voltage rating and SMB package. These provide direct functional replacement without circuit modification.

Category B - Functional Alternatives (1 A or 3 A Rating): Parts with 400 V voltage rating and SMB package but differing current ratings. These require design verification to confirm suitability within the application circuit.

Parameter Comparison

Part Number	Manufacturer	Vr (Max)	Io	Vf (Max) @ If	Speed	trr	Package	Product Status	RoHS Status
ES2G/1	Vishay General Semiconductor	400 V	2 A	1.1 V @ 2 A	Fast Recovery ≤ 500ns	50 ns	DO-214AA (SMB)	Obsolete	RoHS Non-Compliant
CGRB204-G	Comchip Technology	400 V	2 A	1.1 V @ 2 A	Standard Recovery >500ns	Not Specified	DO-214AA (SMB)	Active	ROHS3 Compliant
ES2G-13-F	Diodes Incorporated	400 V	2 A	1.25 V @ 2 A	Fast Recovery ≤ 500ns	35 ns	DO-214AA (SMB)	Active	ROHS3 Compliant
S2G	Diotec Semiconductor	400 V	2 A	1.15 V @ 2 A	Standard Recovery >500ns	1.5 µs	DO-214AA (SMB)	Active	Not Applicable
STTH1R04U	STMicroelectronics	400 V	1 A	1.5 V @ 1 A	Fast Recovery ≤ 500ns	30 ns	DO-214AA (SMB)	Active	ROHS3 Compliant
STTH1R04UY	STMicroelectronics	400 V	1 A	1.6 V @ 1 A	Fast Recovery ≤ 500ns	30 ns	DO-214AA (SMB)	Active	ROHS3 Compliant
STTH3R04U	STMicroelectronics	400 V	3 A	1.5 V @ 3 A	Fast Recovery ≤ 500ns	35 ns	DO-214AA (SMB)	Active	ROHS3 Compliant

Engineering Selection Recommendations

Direct Replacement (2 A Current Rating):

ES2G-13-F (Diodes Incorporated) is the primary recommended substitute. This part maintains the 2 A current rating, 400 V voltage rating, and SMB package. It features fast recovery characteristics (35 ns trr) superior to the original ES2G/1 (50 ns trr) and is ROHS3 compliant. The forward voltage specification of 1.25 V @ 2 A is marginally higher than the original 1.1 V @ 2 A; circuit thermal analysis is required to confirm acceptability in applications with tight thermal budgets.

CGRB204-G (Comchip Technology) provides an alternative 2 A substitute with identical forward voltage (1.1 V @ 2 A) and voltage rating. This part employs standard recovery characteristics (>500ns) rather than fast recovery. Selection of CGRB204-G is appropriate for applications where recovery speed is not a critical performance parameter and where RoHS3 compliance is required.

S2G (Diotec Semiconductor) is a 2 A substitute with 400 V rating and SMB package. Forward voltage is 1.15 V @ 2 A. This part uses standard recovery technology with extended reverse recovery time (1.5 µs). Selection is limited to applications where fast recovery is not required.

Functional Alternatives (Current Rating Deviation):

STTH1R04U and STTH1R04UY (STMicroelectronics) are 1 A rated parts with 400 V voltage and SMB package. These parts are suitable only for applications where the circuit load current does not exceed 1 A. Both feature fast recovery (30 ns trr) and ROHS3 compliance. STTH1R04UY includes AEC-Q101 automotive qualification and extended temperature range (-40°C to 175°C).

STTH3R04U (STMicroelectronics) is a 3 A rated part with 400 V voltage and SMB package. This part provides current margin above the original 2 A specification and is suitable for applications requiring higher current capacity. It features fast recovery (35 ns trr) and ROHS3 compliance.

Compliance Considerations:

All recommended active substitutes are ROHS3 compliant, addressing regulatory requirements for new designs. The original ES2G/1 is RoHS non-compliant and unsuitable for applications subject to RoHS directives.

Frequently Asked Questions (FAQ)

Q: Can STTH1R04U or STTH1R04UY replace ES2G/1 in all applications?

A: No. These parts are rated for 1 A average rectified current, compared to the ES2G/1 rating of 2 A. Substitution is limited to applications where the actual circuit load current does not exceed 1 A. Exceeding the rated current causes excessive junction temperature rise and reduced component reliability. Circuit current analysis is required before selection.

Q: What is the difference between ES2G-13-F and CGRB204-G?

A: Both are 2 A, 400 V SMB package diodes suitable as direct replacements. ES2G-13-F features fast recovery (35 ns trr) and forward voltage of 1.25 V @ 2 A. CGRB204-G features standard recovery (>500ns) and forward voltage of 1.1 V @ 2 A. Selection depends on whether fast recovery performance is required for the application. ES2G-13-F is preferred for circuits sensitive to switching speed; CGRB204-G is preferred for applications where forward voltage drop must be minimized.

Q: Is STTH3R04U suitable as a substitute?

A: Yes, STTH3R04U is functionally suitable. It provides 3 A current capacity, exceeding the original 2 A specification, with identical 400 V voltage rating and SMB package. This part is appropriate for applications where current margin is beneficial or where future design upgrades may require higher current capacity. No circuit modification is required.

Q: What does "fast recovery" mean, and why does it matter?

A: Fast recovery refers to the reverse recovery time (trr), the interval required for a diode to transition from forward conduction to reverse blocking when the applied voltage reverses. The ES2G/1 specifies 50 ns trr. Shorter recovery times reduce switching losses and electromagnetic interference in high-frequency circuits. ES2G-13-F (35 ns) and STTH3R04U (35 ns) provide faster recovery than the original. Standard recovery parts like CGRB204-G (>500ns) are suitable for lower-frequency applications where switching speed is not performance-limiting.

Q: Are all substitute parts available in the same packaging format?

A: All substitute parts use the DO-214AA (SMB) surface mount package, ensuring mechanical and thermal compatibility with the original ES2G/1. Packaging format differences exist only in supplier delivery method: some are supplied in Cut Tape (CT) & Digi-Reel®, others in Tape & Reel (TR). These differences affect procurement and handling but do not affect component performance or PCB assembly compatibility.

Q: Why is the ES2G/1 classified as obsolete?

A: Obsolete status indicates the original manufacturer (Vishay General Semiconductor) has discontinued production. This classification necessitates identification of active substitute parts to maintain design continuity and ensure long-term procurement availability. All recommended substitutes are classified as active and available from multiple suppliers.

Q: Can I use STTH1R04UY in automotive applications?

A: STTH1R04UY is qualified to AEC-Q101 automotive standards and is suitable for automotive applications. However, this part is rated for 1 A, not 2 A. Automotive suitability does not override current rating limitations. Use STTH1R04UY only in automotive circuits where load current does not exceed 1 A.

Q: What is the impact of forward voltage differences between substitutes?

A: Forward voltage (Vf) determines the voltage drop across the diode during forward conduction. The ES2G/1 specifies 1.1 V @ 2 A. ES2G-13-F specifies 1.25 V @ 2 A, a 0.15 V increase. In high-current or thermally constrained applications, this difference increases power dissipation and junction temperature. Circuit thermal analysis is required to confirm acceptability. For most general-purpose rectification applications, this difference is negligible.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message