AES2AF-HF Equivalent & Substitute Parts

Part Overview

The AES2AF-HF is a general-purpose rectifier diode manufactured by Comchip Technology, rated for 50V DC reverse voltage and 2A average rectified current in a surface mount SMAF package. This component is classified as Active product status and meets AEC-Q101 automotive qualification standards. Substitute parts are identified when equivalent electrical performance and mechanical compatibility are required due to inventory constraints, supply chain considerations, or design flexibility needs.

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	5	µA @ 50 V
Speed Classification	Fast Recovery ≤ 500ns, > 200mA (Io)	-
Package / Case	DO-214AC, SMA	-
Operating Temperature - Junction	-55°C ~ 150°C	°C
Grade	Automotive	-
Qualification	AEC-Q101	-
RoHS Status	ROHS3 Compliant	-
Moisture Sensitivity Level (MSL)	1 (Unlimited)	-

Substitute Part Grouping Explanation

Substitution of the AES2AF-HF is permissible with parts that maintain electrical equivalence across all critical parameters. The substitution logic is based on the following criteria:

Electrical Equivalence Requirements:

Voltage - DC Reverse (Vr) (Max): 50V minimum
Current - Average Rectified (Io): 2A minimum
Voltage - Forward (Vf) (Max) @ If: 950 mV @ 2A maximum
Reverse Recovery Time (trr): 35 ns maximum
Speed Classification: Fast Recovery ≤ 500ns, > 200mA (Io)

Mechanical Compatibility Requirements:

Package / Case: DO-214AC, SMA
Mounting Type: Surface Mount
Operating Temperature Range: -55°C ~ 150°C minimum

Compliance Requirements:

Product Status: Active
RoHS Status: ROHS3 Compliant
Moisture Sensitivity Level (MSL): 1 (Unlimited)

Parts meeting all three requirement categories are classified as parametric equivalents and direct substitutes.

Parameter Comparison

Parameter	AES2AF-HF (Comchip)	ES2A_R1_00001 (Panjit)	Match Status
Voltage - DC Reverse (Vr) (Max)	50 V	50 V	Equivalent
Current - Average Rectified (Io)	2 A	2 A	Equivalent
Voltage - Forward (Vf) (Max) @ If	950 mV @ 2 A	950 mV @ 2 A	Equivalent
Reverse Recovery Time (trr)	35 ns	35 ns	Equivalent
Speed Classification	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)	Equivalent
Current - Reverse Leakage @ Vr	5 µA @ 50 V	1 µA @ 50 V	Substitute Superior
Package / Case	DO-214AC, SMA	DO-214AC, SMA	Equivalent
Operating Temperature - Junction	-55°C ~ 150°C	-55°C ~ 150°C	Equivalent
Mounting Type	Surface Mount	Surface Mount	Equivalent
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Equivalent
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	Equivalent
Product Status	Active	Active	Equivalent

Engineering Selection Recommendations

The ES2A_R1_00001 manufactured by Panjit International Inc. is a direct parametric equivalent to the AES2AF-HF. Both components satisfy identical electrical specifications for reverse voltage, forward current, forward voltage drop, and reverse recovery time. Both are packaged in DO-214AC (SMA) surface mount configuration and operate across the same temperature range of -55°C to 150°C.

Both parts maintain Active product status and ROHS3 compliance. The ES2A_R1_00001 demonstrates superior reverse leakage current performance at 1 µA compared to 5 µA for the AES2AF-HF, representing an additional design margin without compromising any specified parameter.

Selection between these parts is determined by availability, supply chain requirements, and procurement preferences. The AES2AF-HF currently maintains 786 pieces in stock, while the ES2A_R1_00001 maintains 2708 pieces in stock. Both parts are suitable for direct substitution in automotive-grade applications requiring AEC-Q101 qualification.

Frequently Asked Questions (FAQ)

Q: Can the ES2A_R1_00001 be used as a direct replacement for the AES2AF-HF in production designs?

A: Yes. The ES2A_R1_00001 meets all electrical and mechanical specifications of the AES2AF-HF. Both components are rated for 50V reverse voltage, 2A average rectified current, 950 mV forward voltage drop at 2A, and 35 ns reverse recovery time. Both are packaged in DO-214AC (SMA) surface mount configuration and operate across -55°C to 150°C. Both maintain ROHS3 compliance and Active product status.

Q: Are there package compatibility concerns between these parts?

A: No. Both the AES2AF-HF and ES2A_R1_00001 use identical DO-214AC (SMA) surface mount packaging. PCB footprints, solder pad layouts, and mounting procedures are identical. No design modifications are required for substitution.

Q: What is the difference in reverse leakage current between these parts?

A: The AES2AF-HF specifies 5 µA reverse leakage current at 50V, while the ES2A_R1_00001 specifies 1 µA reverse leakage current at 50V. The ES2A_R1_00001 exhibits lower leakage, providing additional design margin in applications sensitive to reverse current.

Q: Do both parts meet automotive qualification requirements?

A: The AES2AF-HF carries AEC-Q101 automotive qualification. The ES2A_R1_00001 specifications provided do not include explicit AEC-Q101 notation. Verification of automotive qualification status for the ES2A_R1_00001 is required for applications mandating automotive-grade components.

Q: What is the temperature operating range for both parts?

A: Both the AES2AF-HF and ES2A_R1_00001 operate across a junction temperature range of -55°C to 150°C, providing identical thermal performance specifications.

Q: Are there any moisture sensitivity differences between these parts?

A: No. Both parts carry Moisture Sensitivity Level (MSL) rating of 1 (Unlimited), indicating no moisture sensitivity restrictions for storage, handling, or reflow processes.

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