S3G V7G General Purpose Rectifier Diode 400V 3A DO-214AB Equivalent & Substitute Parts

Part Overview

The S3G V7G is a general purpose rectifier diode manufactured by Taiwan Semiconductor Corporation, rated for 400V DC reverse voltage and 3A average rectified current in a surface mount DO-214AB (SMC) package. This part is discontinued at DiGi Electronics, necessitating identification of equivalent and substitute components that maintain electrical and mechanical compatibility for ongoing production and repair applications.

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 V @ 3 A	V
Speed	Standard Recovery >500ns, > 200mA (Io)	—
Reverse Recovery Time (trr)	1.5	µs
Current - Reverse Leakage @ Vr	10	µA @ 400 V
Capacitance @ Vr, F	60	pF @ 4V, 1MHz
Mounting Type	Surface Mount	—
Package / Case	DO-214AB, SMC	—
Operating Temperature - Junction	-55 to 150	°C
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the S3G V7G is determined by the following critical parameters:

Mandatory Matching Parameters:

Voltage - DC Reverse (Vr) (Max): 400 V
Current - Average Rectified (Io): 3 A
Mounting Type: Surface Mount
Package / Case: DO-214AB, SMC
Operating Temperature - Junction: -55°C to 150°C minimum

Acceptable Variation Parameters:

Voltage - Forward (Vf) (Max) @ If: 1.15 V maximum (measured at 2.5 A or 3 A)
Reverse Recovery Time (trr): up to 2.5 µs
Current - Reverse Leakage @ Vr: up to 10 µA @ 400 V
Capacitance @ Vr, F: 20 pF to 60 pF @ 4V, 1MHz

Substitute parts must meet or exceed all mandatory parameters. Variations in forward voltage measurement current (2.5 A vs. 3 A) and reverse recovery time do not preclude substitution when the maximum forward voltage specification remains within 1.15 V. Automotive-grade variants with AEC-Q101 qualification are functionally equivalent for general purpose applications.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Vr (Max) [V]	Io [A]	Vf (Max) [V]	trr [µs]	Ir @ Vr [µA]	C @ Vr [pF]	Temp Range [°C]	Product Status	Packaging
S3G V7G	Taiwan Semiconductor Corporation	400	3	1.15 @ 3A	1.5	10 @ 400V	60 @ 4V	-55 to 150	Discontinued	—
S3G	Diotec Semiconductor	400	3	1.15 @ 3A	1.5	5 @ 1700V	—	-50 to 150	Active	Cut Tape (CT) & Digi-Reel®
S3GH	Taiwan Semiconductor Corporation	400	3	1.15 @ 3A	1.5	10 @ 400V	60 @ 4V	-55 to 150	Active	Tape & Reel (TR)
ACGRC304-HF	Comchip Technology	400	3	1.15 @ 3A	—	5 @ 400V	20 @ 4V	-55 to 150	Active	Tape & Reel (TR)
S3G-E3/57T	Vishay General Semiconductor - Diodes Division	400	3	1.15 @ 2.5A	2.5	10 @ 400V	60 @ 4V	-55 to 150	Active	Cut Tape (CT)
S3G-E3/9AT	Vishay General Semiconductor - Diodes Division	400	3	1.15 @ 2.5A	2.5	10 @ 400V	60 @ 4V	-55 to 150	Active	Tape & Reel (TR)
S3G-M3/57T	Vishay General Semiconductor - Diodes Division	400	3	1.15 @ 2.5A	2.5	10 @ 400V	60 @ 4V	-55 to 150	Active	Tape & Reel (TR)
S3G-M3/9AT	Vishay General Semiconductor - Diodes Division	400	3	1.15 @ 2.5A	2.5	10 @ 400V	60 @ 4V	-55 to 150	Active	Tape & Reel (TR)
S3GHE3_A/H	Vishay General Semiconductor - Diodes Division	400	3	1.15 @ 2.5A	2.5	10 @ 400V	60 @ 4V	-55 to 150	Active	Cut Tape (CT)
S3GHE3_A/I	Vishay General Semiconductor - Diodes Division	400	3	1.15 @ 2.5A	2.5	10 @ 400V	60 @ 4V	-55 to 150	Active	Cut Tape (CT)
S3GHM3_A/H	Vishay General Semiconductor - Diodes Division	400	3	1.15 @ 2.5A	2.5	10 @ 400V	60 @ 4V	-55 to 150	Active	Tape & Reel (TR)

Engineering Selection Recommendations

Primary Substitute (Direct Replacement): The S3GH manufactured by Taiwan Semiconductor Corporation is the primary substitute for the S3G V7G. This part maintains identical electrical specifications, the same manufacturer origin, and is currently in active production status with 3,728 units in stock. The S3GH differs only in packaging format (Tape & Reel vs. unspecified original packaging) and carries AEC-Q101 automotive qualification.

Secondary Substitutes (Functionally Equivalent): The following parts are functionally equivalent and maintain all critical electrical parameters:

S3G (Diotec Semiconductor): Active status with highest inventory (14,614 units). Meets all voltage and current specifications. Operating temperature range is -50°C to 150°C, which covers the primary application range. Available in Cut Tape and Digi-Reel packaging.
ACGRC304-HF (Comchip Technology): Active status with 3,597 units in stock. Automotive-grade with AEC-Q101 qualification. Capacitance specification is lower (20 pF vs. 60 pF), which is acceptable for general purpose rectification applications.
Vishay General Semiconductor S3G Series (S3G-E3/57T, S3G-E3/9AT, S3G-M3/57T, S3G-M3/9AT, S3GHE3_A/H, S3GHE3_A/I, S3GHM3_A/H): All variants are active status with combined inventory exceeding 45,000 units. These parts feature extended reverse recovery time (2.5 µs vs. 1.5 µs) and forward voltage measurement at 2.5 A instead of 3 A, but maintain the 1.15 V maximum specification. Automotive-qualified variants (S3GHE3_A/H, S3GHE3_A/I, S3GHM3_A/H) carry AEC-Q101 certification.

Compliance Considerations: All substitute parts maintain ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating. The S3GH, ACGRC304-HF, and all Vishay automotive variants carry AEC-Q101 qualification, suitable for automotive and industrial applications requiring enhanced reliability documentation.

Frequently Asked Questions (FAQ)

Q: Can the S3G V7G be replaced with the S3GH? A: Yes. The S3GH is a direct functional equivalent manufactured by the same company (Taiwan Semiconductor Corporation) with identical electrical specifications. The primary difference is packaging format (Tape & Reel). Both parts are rated 400V, 3A, with 1.15V forward voltage and -55°C to 150°C operating range.

Q: What is the difference between the Diotec S3G and the Taiwan Semiconductor S3GH? A: Both parts meet the 400V, 3A, 1.15V specifications required for substitution. The Diotec S3G has a slightly lower operating temperature minimum (-50°C vs. -55°C) and does not carry automotive qualification. The S3GH includes AEC-Q101 automotive qualification. Diotec S3G has significantly higher inventory availability (14,614 units).

Q: Are the Vishay S3G variants (S3G-E3/57T, S3G-E3/9AT, etc.) suitable replacements? A: Yes. All Vishay variants maintain the 400V, 3A core specifications and 1.15V maximum forward voltage. The reverse recovery time is longer (2.5 µs vs. 1.5 µs), which is acceptable for general purpose rectification. Forward voltage is measured at 2.5A instead of 3A, but the maximum specification remains 1.15V. Automotive-qualified variants are available.

Q: What is the difference between Cut Tape (CT) and Tape & Reel (TR) packaging? A: Both are surface mount delivery formats for DO-214AB components. Cut Tape (CT) provides individual component strips suitable for manual assembly or small-volume production. Tape & Reel (TR) provides continuous reel format for automated pick-and-place assembly equipment. Electrical specifications are identical; selection depends on assembly process requirements.

Q: Can I use an automotive-qualified part (AEC-Q101) in a non-automotive application? A: Yes. Automotive-qualified parts meet or exceed general purpose specifications and carry additional reliability documentation. Using an automotive-qualified part in a general purpose application introduces no compatibility issues and may provide enhanced reliability margins.

Q: What does the capacitance specification (60 pF @ 4V, 1MHz) mean for substitution? A: Capacitance is a secondary parameter for general purpose rectifier diodes. The ACGRC304-HF specifies 20 pF at the same conditions, which is acceptable for substitution. Capacitance variation does not affect rectification performance in standard power supply applications. Selection between 20 pF and 60 pF variants depends on specific circuit requirements for high-frequency filtering or switching applications.

Q: Why does the Diotec S3G specify reverse leakage at 1700V instead of 400V? A: Reverse leakage current is typically measured at the rated reverse voltage (400V for this part). The Diotec specification at 1700V represents a more stringent test condition and indicates lower leakage performance. This does not preclude substitution; it indicates equivalent or superior leakage characteristics at the operating voltage.

Q: Are all substitute parts ROHS3 compliant? A: The S3GH, ACGRC304-HF, and all Vishay variants are explicitly ROHS3 compliant. The Diotec S3G lists RoHS status as "Not applicable," which typically indicates the part predates formal RoHS classification but meets RoHS requirements. Verify compliance documentation with the supplier if RoHS certification is a contractual requirement.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message