ES2AHM4G Equivalent & Substitute Parts

Part Overview

The ES2AHM4G is a general-purpose rectifier diode manufactured by Taiwan Semiconductor Corporation, 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 discontinued at DiGi Electronics, necessitating identification of equivalent and substitute components for ongoing design requirements and production continuity. The diode features fast recovery characteristics with a 35 ns reverse recovery time and automotive-grade qualification per AEC-Q101, making it suitable for automotive and industrial applications requiring reliable rectification performance.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	50	V
Current - Average Rectified (Io)	2	A
Voltage - Forward (Vf) (Max) @ If	950 mV @ 2 A	mV
Reverse Recovery Time (trr)	35	ns
Current - Reverse Leakage @ Vr	10	µA @ 50 V
Speed Classification	Fast Recovery ≤ 500ns, > 200mA (Io)	—
Package / Case	DO-214AA, SMB	—
Operating Temperature - Junction	-55°C ~ 150°C	°C
Grade	Automotive	—
Qualification	AEC-Q101	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution of the ES2AHM4G is determined by the following critical parameters: voltage rating (50 V DC reverse), current rating (2 A average rectified), package type (DO-214AA SMB), and recovery speed classification (fast recovery ≤ 500ns). Parts are grouped into three categories based on substitution compatibility:

Parametric Equivalent (Direct Replacement): Parts that match all critical electrical parameters and package specifications. These parts maintain identical voltage, current, and recovery speed ratings, ensuring drop-in compatibility.

Similar Parts (Functional Equivalents with Minor Deviations): Parts that meet the core voltage and current requirements but may differ in recovery speed classification, forward voltage characteristics, or temperature range. These parts are functionally suitable for applications where the specific parameter deviation does not impact circuit performance.

Package Variants (Same Electrical Specifications, Different Package): Parts with identical electrical ratings but different surface mount packages (SMA vs. SMB), requiring PCB layout modification but maintaining electrical compatibility.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Vr (Max)	Io	Vf (Max) @ If	Recovery Speed	trr	Package	Product Status
ES2AHM4G	Taiwan Semiconductor Corporation	50 V	2 A	950 mV @ 2 A	Fast Recovery ≤ 500ns	35 ns	DO-214AA (SMB)	Discontinued
ES2AH	Taiwan Semiconductor Corporation	50 V	2 A	950 mV @ 2 A	Fast Recovery ≤ 500ns	35 ns	DO-214AA (SMB)	Active
ES2A	YAGEO	50 V	2 A	950 mV	—	DO-214AA (SMB)	Active
CGRB201-G	Comchip Technology	50 V	2 A	1.1 V @ 2 A	Standard Recovery >500ns	—	DO-214AA (SMB)	Active
CSFB201-G	Comchip Technology	50 V	2 A	920 mV @ 2 A	Fast Recovery ≤ 500ns	35 ns	DO-214AA (SMB)	Active
ES2A-13-F	Diodes Incorporated	50 V	2 A	920 mV @ 2 A	Fast Recovery ≤ 500ns	25 ns	DO-214AA (SMB)	Active
ES2AA-13-F	Diodes Incorporated	50 V	2 A	920 mV @ 2 A	Fast Recovery ≤ 500ns	25 ns	DO-214AC (SMA)	Active
S2A-13-F	Diodes Incorporated	50 V	1.5 A	1.15 V @ 1.5 A	Standard Recovery >500ns	—	DO-214AA (SMB)	Active

Engineering Selection Recommendations

Primary Recommendation - Parametric Equivalent: The ES2AH from Taiwan Semiconductor Corporation is the direct parametric equivalent to the ES2AHM4G. This part maintains identical electrical specifications (50 V, 2 A, 950 mV forward voltage, 35 ns recovery time) and package configuration (DO-214AA SMB). The ES2AH is currently active in production and carries the same automotive-grade qualification (AEC-Q101) and ROHS3 compliance status. This part is the preferred replacement for direct substitution without circuit modification.

Secondary Recommendation - Fast Recovery Equivalent: The ES2A-13-F from Diodes Incorporated and CSFB201-G from Comchip Technology both meet the fast recovery speed requirement (≤ 500ns) and maintain the 50 V / 2 A rating in DO-214AA SMB packaging. Both parts are active in production with ROHS3 compliance. The ES2A-13-F offers a slightly lower forward voltage (920 mV vs. 950 mV) and faster recovery time (25 ns vs. 35 ns), providing improved switching performance. The CSFB201-G offers comparable performance with 920 mV forward voltage and 35 ns recovery time.

Alternative Consideration - Standard Recovery: The CGRB201-G from Comchip Technology provides a 50 V / 2 A rating in DO-214AA SMB packaging but operates with standard recovery speed (>500ns). This part is suitable for applications where switching speed is not critical and lower forward voltage (1.1 V) is acceptable. This part is active in production with ROHS3 compliance.

Package Variant - SMA Configuration: The ES2AA-13-F from Diodes Incorporated provides identical electrical performance to ES2A-13-F but in a DO-214AC (SMA) package instead of SMB. This part requires PCB layout modification and is suitable only when SMA package footprint is available or preferred.

Current Derating Consideration: The S2A-13-F from Diodes Incorporated is rated for 1.5 A average rectified current, which is below the 2 A requirement of the ES2AHM4G. This part is not suitable for direct substitution in applications requiring full 2 A current capacity.

All recommended substitutes maintain ROHS3 compliance, MSL Level 1 (unlimited moisture sensitivity), and REACH unaffected status consistent with the original part.

Frequently Asked Questions (FAQ)

Q: Can ES2AH be used as a direct replacement for ES2AHM4G? A: Yes. The ES2AH is a parametric equivalent with identical voltage (50 V), current (2 A), forward voltage (950 mV @ 2 A), recovery time (35 ns), and package (DO-214AA SMB). It is currently active in production and carries the same AEC-Q101 automotive qualification.

Q: What is the difference between fast recovery and standard recovery diodes? A: Fast recovery diodes have reverse recovery time ≤ 500ns, enabling faster switching transitions and reduced switching losses. Standard recovery diodes have reverse recovery time >500ns. The ES2AHM4G specifies fast recovery (35 ns). Substitutes with standard recovery (CGRB201-G) are suitable only for applications where switching speed is not performance-critical.

Q: Can CGRB201-G replace ES2AHM4G? A: CGRB201-G matches the 50 V / 2 A rating and DO-214AA SMB package but operates with standard recovery speed (>500ns) versus the fast recovery (35 ns) of ES2AHM4G. Substitution is acceptable only if the application does not require fast switching performance. Forward voltage is higher (1.1 V vs. 950 mV), resulting in increased power dissipation.

Q: Why is ES2AA-13-F listed as a similar part if it has a different package? A: ES2AA-13-F maintains identical electrical specifications (50 V, 2 A, 920 mV forward voltage, 25 ns recovery time, fast recovery classification) but uses a DO-214AC (SMA) surface mount package instead of DO-214AA (SMB). Substitution requires PCB layout modification to accommodate the different package footprint. Electrical performance is equivalent or superior.

Q: Is S2A-13-F suitable for applications requiring 2 A current? A: No. S2A-13-F is rated for 1.5 A average rectified current, which is insufficient for applications requiring the full 2 A capacity of ES2AHM4G. This part is not a suitable substitute for current-critical applications.

Q: What compliance certifications are maintained across all substitute parts? A: All recommended substitute parts maintain ROHS3 compliance, MSL Level 1 (unlimited moisture sensitivity), REACH unaffected status, and EAR99 export classification. The ES2AH maintains AEC-Q101 automotive qualification identical to the original part. Other substitutes maintain active production status with equivalent compliance profiles.

Q: How does forward voltage affect circuit performance? A: Forward voltage (Vf) determines the voltage drop across the diode during conduction. The ES2AHM4G specifies 950 mV @ 2 A. Substitutes with lower forward voltage (920 mV) reduce power dissipation and heat generation. Substitutes with higher forward voltage (1.1 V) increase power dissipation. Selection depends on circuit power budget and thermal management requirements.

Q: Can multiple substitute parts be used interchangeably in the same design? A: Parts with identical electrical specifications and package (ES2AH, ES2A-13-F, CSFB201-G) are interchangeable. Parts with different recovery speeds (CGRB201-G) or current ratings (S2A-13-F) require circuit evaluation before substitution. Package variants (ES2AA-13-F) require PCB layout modification and are not interchangeable without redesign.

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