ACGRC304-HF Equivalent & Substitute Parts

Part Overview

The ACGRC304-HF is a general-purpose rectifier diode manufactured by Comchip Technology, rated for 400 V DC reverse voltage and 3 A average rectified current in a DO-214AB (SMC) surface mount package. The device is classified as Active product status with AEC-Q101 automotive qualification and ROHS3 compliance. Substitute parts are identified based on matching electrical specifications and mechanical compatibility within the DO-214AB package form factor.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	400	V
Current - Average Rectified (Io)	3	A
Voltage - Forward (Vf) (Max) @ If	1.15 @ 3 A	V
Speed	Standard Recovery >500ns, > 200mA (Io)	—
Current - Reverse Leakage @ Vr	5	µA @ 400 V
Capacitance @ Vr, F	20	pF @ 4V, 1MHz
Operating Temperature - Junction	-55 to 150	°C
Package / Case	DO-214AB, SMC	—
Mounting Type	Surface Mount	—
Grade	Automotive	—
Qualification	AEC-Q101	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitute parts for the ACGRC304-HF are qualified based on the following criteria:

Electrical Parameter Matching:

Voltage - DC Reverse (Vr) (Max): 400 V
Current - Average Rectified (Io): 3 A
Voltage - Forward (Vf) (Max): 1.15 V (measured at 2.5 A or 3 A)
Speed Classification: Standard Recovery >500ns, > 200mA (Io)
Operating Temperature Range: -55°C to 150°C

Mechanical Compatibility:

Package / Case: DO-214AB (SMC)
Mounting Type: Surface Mount

Compliance & Certification:

RoHS Status: ROHS3 Compliant
Product Status: Active

All substitute parts listed maintain these core parameters. Variations in reverse leakage current (5 µA to 10 µA @ 400 V) and junction capacitance (20 pF to 60 pF @ 4V, 1MHz) remain within acceptable tolerance for general-purpose rectifier applications. Automotive-grade substitutes (S3GHE3_A/H, S3GHE3_A/I) include AEC-Q101 qualification matching the main part.

Parameter Comparison

Parameter	ACGRC304-HF	S3G-E3/57T	S3G-E3/9AT	S3GHE3_A/H	S3GHE3_A/I
Manufacturer	Comchip Technology	Vishay General Semiconductor	Vishay General Semiconductor	Vishay General Semiconductor	Vishay General Semiconductor
Voltage - DC Reverse (Vr) (Max)	400 V	400 V	400 V	400 V	400 V
Current - Average Rectified (Io)	3 A	3 A	3 A	3 A	3 A
Voltage - Forward (Vf) (Max) @ If	1.15 V @ 3 A	1.15 V @ 2.5 A	1.15 V @ 2.5 A	1.15 V @ 2.5 A	1.15 V @ 2.5 A
Speed	Standard Recovery >500ns, > 200mA (Io)	Standard Recovery >500ns, > 200mA (Io)	Standard Recovery >500ns, > 200mA (Io)	Standard Recovery >500ns, > 200mA (Io)	Standard Recovery >500ns, > 200mA (Io)
Reverse Recovery Time (trr)	—	2.5 µs	2.5 µs	2.5 µs	2.5 µs
Current - Reverse Leakage @ Vr	5 µA @ 400 V	10 µA @ 400 V	10 µA @ 400 V	10 µA @ 400 V	10 µA @ 400 V
Capacitance @ Vr, F	20 pF @ 4V, 1MHz	60 pF @ 4V, 1MHz	60 pF @ 4V, 1MHz	60 pF @ 4V, 1MHz	60 pF @ 4V, 1MHz
Operating Temperature - Junction	-55°C to 150°C	-55°C to 150°C	-55°C to 150°C	-55°C to 150°C	-55°C to 150°C
Package / Case	DO-214AB, SMC	DO-214AB, SMC	DO-214AB, SMC	DO-214AB, SMC	DO-214AB, SMC
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Packaging	Tape & Reel (TR)	Cut Tape (CT)	Tape & Reel (TR)	Cut Tape (CT)	Cut Tape (CT)
Grade	Automotive	—	—	Automotive	Automotive
Qualification	AEC-Q101	—	—	AEC-Q101	AEC-Q101
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Active	Active	Active	Active	Active

Engineering Selection Recommendations

For Automotive Applications: S3GHE3_A/H and S3GHE3_A/I are direct functional equivalents with AEC-Q101 qualification matching the ACGRC304-HF. Both parts maintain automotive-grade specifications and are suitable for replacement in automotive circuit designs.

For General Industrial Applications: S3G-E3/57T and S3G-E3/9AT provide electrical equivalence without automotive qualification. These parts are appropriate for non-automotive applications where AEC-Q101 certification is not required.

Packaging Considerations: ACGRC304-HF and S3G-E3/9AT are supplied in Tape & Reel (TR) packaging. S3G-E3/57T, S3GHE3_A/H, and S3GHE3_A/I are supplied in Cut Tape (CT) packaging. Packaging selection depends on assembly process requirements and volume specifications.

Compliance Status: All substitute parts maintain ROHS3 compliance and Active product status, ensuring long-term availability and regulatory alignment.

Frequently Asked Questions (FAQ)

Q: Can S3G-E3/57T replace ACGRC304-HF in automotive applications?

A: S3G-E3/57T is not AEC-Q101 qualified. For automotive applications requiring AEC-Q101 certification, use S3GHE3_A/H or S3GHE3_A/I instead.

Q: What is the difference between the reverse leakage current specifications?

A: ACGRC304-HF specifies 5 µA @ 400 V, while Vishay substitutes specify 10 µA @ 400 V. Both values are within acceptable limits for general-purpose rectifier operation. The higher leakage in Vishay parts does not affect functional compatibility in standard applications.

Q: Are the packaging differences between Tape & Reel and Cut Tape significant?

A: Packaging format affects assembly process compatibility. Tape & Reel (TR) is used for automated high-volume assembly. Cut Tape (CT) is used for lower-volume or manual assembly processes. Electrical performance is identical; selection depends on manufacturing equipment and volume requirements.

Q: Can I use S3G-E3/57T if my design does not require automotive qualification?

A: Yes. S3G-E3/57T meets all electrical and mechanical specifications for general-purpose rectifier applications. Confirm that your application does not require AEC-Q101 certification before selection.

Q: What is the significance of the junction capacitance difference (20 pF vs. 60 pF)?

A: Junction capacitance affects high-frequency switching behavior. ACGRC304-HF has lower capacitance (20 pF), while Vishay substitutes have higher capacitance (60 pF). For standard rectifier applications operating below 1 MHz, this difference is not functionally significant. For high-frequency switching circuits, confirm capacitance compatibility with circuit design requirements.

Q: Are all substitute parts currently in stock?

A: Inventory status is subject to change. Confirm current availability with your supplier before finalizing procurement decisions.

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