ES2AAHM2G Equivalent & Substitute Parts

Part Overview

The ES2AAHM2G 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 surface mount DO-214AC (SMA) package. This part is classified as discontinued at DiGi Electronics, necessitating identification of equivalent and substitute components for ongoing design requirements and production needs. The device features fast recovery characteristics with a 35 ns reverse recovery time and automotive-grade qualification under AEC-Q101 standards.

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	µA
Package / Case	DO-214AC, SMA	—
Mounting Type	Surface Mount	—
Operating Temperature - Junction	-55°C ~ 150°C	°C
Grade	Automotive	—
Qualification	AEC-Q101	—
Technology	Standard	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution of the ES2AAHM2G is determined by the following critical parameters: voltage rating (50 V minimum), current rating (2 A minimum for direct equivalents), package type (DO-214AC/SMA surface mount), technology type (Standard rectifier diode), and forward voltage characteristics. Parts are grouped into two categories:

Parametric Equivalents maintain identical electrical specifications across all critical parameters, including 50 V reverse voltage, 2 A current rating, 950 mV forward voltage at 2 A, 35 ns reverse recovery time, and automotive AEC-Q101 qualification. These parts are direct functional replacements with no circuit redesign required.

Similar Parts share the same 50 V voltage rating and DO-214AC/SMA package but differ in current rating (1 A instead of 2 A), technology type (Schottky instead of Standard), or forward voltage characteristics. These parts are suitable only for applications where the lower current rating is acceptable or where Schottky characteristics provide circuit benefits. Parts with reduced current ratings cannot be used in circuits requiring the full 2 A specification.

Parameter Comparison

Part Number	Manufacturer	Technology	Vr (Max)	Io (A)	Vf (Max)	trr (ns)	Package	Grade	AEC-Q101	Product Status
ES2AAHM2G	Taiwan Semiconductor	Standard	50 V	2	950 mV @ 2 A	35	DO-214AC	Automotive	Yes	Discontinued
ES2AA	Taiwan Semiconductor	Standard	50 V	2	950 mV @ 2 A	35	DO-214AC	—	—	Active
ES2AAH	Taiwan Semiconductor	Standard	50 V	2	950 mV @ 2 A	35	DO-214AC	Automotive	Yes	Active
B150-13-F	Diodes Incorporated	Schottky	50 V	1	700 mV @ 1 A	—	DO-214AC	—	—	Active
B150-E3/5AT	Vishay	Schottky	50 V	1	750 mV @ 1 A	—	DO-214AC	—	—	Active
B150-E3/61T	Vishay	Schottky	50 V	1	750 mV @ 1 A	—	DO-214AC	—	—	Active
B150B-13-F	Diodes Incorporated	Schottky	50 V	1	700 mV @ 1 A	—	DO-214AA	—	—	Active
B150Q-13-F	Diodes Incorporated	Schottky	50 V	1	700 mV @ 1 A	—	DO-214AC	Automotive	Yes	Active
B250AQ-13-F	Diodes Incorporated	Schottky	50 V	2	700 mV @ 2 A	—	DO-214AC	Automotive	Yes	Active
CFRA101-G	Comchip Technology	Standard	50 V	1	1.3 V @ 1 A	150	DO-214AC	—	—	Active
CGRA4001-G	Comchip Technology	Standard	50 V	1	1.1 V @ 1 A	—	DO-214AC	—	—	Active

Engineering Selection Recommendations

Parametric Equivalents for Direct Replacement:

ES2AA and ES2AAH are parametric equivalents of ES2AAHM2G, maintaining identical electrical specifications including 50 V reverse voltage, 2 A current rating, 950 mV forward voltage at 2 A, and 35 ns reverse recovery time. ES2AAH carries automotive-grade qualification with AEC-Q101 certification, matching the original part's qualification status. Both parts are in active production status. ES2AA is available in higher inventory (10,100 pcs) compared to ES2AAH (850 pcs). For applications requiring automotive qualification, ES2AAH is the preferred selection. For non-automotive applications, ES2AA provides equivalent performance with greater availability.

Schottky Diode Alternatives with Matching Current Rating:

B250AQ-13-F is a Schottky diode rated for 50 V and 2 A, matching the current capacity of the ES2AAHM2G. This part carries automotive-grade qualification and AEC-Q101 certification. The forward voltage is 700 mV at 2 A, lower than the 950 mV of the original part, resulting in reduced power dissipation. Schottky technology provides faster switching characteristics suitable for high-frequency applications. This part is suitable for circuits where Schottky characteristics are beneficial and lower forward voltage drop is advantageous.

Lower Current Rating Alternatives:

B150-13-F, B150-E3/5AT, B150-E3/61T, B150Q-13-F, CFRA101-G, and CGRA4001-G are rated for 1 A current, half the rating of the ES2AAHM2G. These parts are suitable only for applications where the circuit current requirement does not exceed 1 A. B150Q-13-F carries automotive AEC-Q101 qualification. These parts cannot be used as direct replacements in circuits designed for 2 A operation.

Package Compatibility:

B150B-13-F uses DO-214AA (SMB) package instead of DO-214AC (SMA), requiring PCB layout modification and is not recommended for direct substitution without design review.

Frequently Asked Questions (FAQ)

Q: Can ES2AA be used as a direct replacement for ES2AAHM2G?

A: ES2AA is a parametric equivalent with identical electrical specifications (50 V, 2 A, 950 mV forward voltage, 35 ns recovery time) and DO-214AC package. However, ES2AA does not carry automotive AEC-Q101 qualification. For non-automotive applications, ES2AA is a direct replacement. For automotive applications, ES2AAH is required.

Q: What is the difference between ES2AAH and ES2AA?

A: Both parts are parametric equivalents with identical electrical specifications. ES2AAH carries automotive-grade qualification and AEC-Q101 certification, while ES2AA does not. Selection depends on application requirements for automotive qualification.

Q: Can B250AQ-13-F replace ES2AAHM2G?

A: B250AQ-13-F matches the 50 V voltage rating and 2 A current rating with DO-214AC package. However, it is a Schottky diode with 700 mV forward voltage compared to the 950 mV of the original Standard diode. Schottky technology provides lower forward voltage drop and faster switching. This part is suitable for applications where Schottky characteristics are acceptable and automotive AEC-Q101 qualification is required.

Q: Why are B150 series parts listed as similar but not equivalent?

A: B150 series parts are rated for 1 A current, half the 2 A rating of ES2AAHM2G. These parts cannot carry the full 2 A current and are unsuitable for circuits designed for 2 A operation. They are listed as similar only because they share the 50 V voltage rating and DO-214AC package.

Q: What does AEC-Q101 qualification mean?

A: AEC-Q101 is an automotive qualification standard for discrete semiconductors. Parts carrying this certification meet automotive industry reliability and quality requirements. For automotive applications, AEC-Q101 certification is mandatory.

Q: Can I use CFRA101-G or CGRA4001-G as replacements?

A: Both parts are Standard technology diodes with 50 V rating and DO-214AC package, but are rated for 1 A current only. They cannot be used in circuits requiring 2 A operation. Additionally, neither part carries automotive qualification.

Q: What is the significance of forward voltage (Vf) differences?

A: Forward voltage determines power dissipation in the diode. Lower forward voltage (Schottky at 700 mV) results in less heat generation compared to Standard diodes (950 mV). For high-current or high-frequency applications, lower forward voltage reduces thermal stress. However, Schottky diodes have higher reverse leakage current.

Q: Does package type affect substitution?

A: Yes. DO-214AC (SMA) and DO-214AA (SMB) are different packages requiring different PCB footprints. B150B-13-F uses SMB package and cannot be directly substituted without PCB redesign. All other listed parts use DO-214AC (SMA) package compatible with ES2AAHM2G.

Q: What is reverse recovery time (trr) and why does it matter?

A: Reverse recovery time is the delay before the diode blocks reverse current after switching from forward to reverse bias. Shorter recovery time (35 ns for ES2AAHM2G) is beneficial for high-frequency switching applications. Standard diodes typically have longer recovery times than Schottky diodes.

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