S3G R6 General Purpose Rectifier Diode 400V 3A DO-214AB Equivalent & Substitute Parts

Part Overview

The S3G R6 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 for ongoing production and repair applications. Active equivalent parts from alternative manufacturers and packaging configurations are available to maintain design functionality and supply chain continuity.

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
Reverse Recovery Time (trr)	1.5	µs
Current - Reverse Leakage @ Vr	10	µA @ 400 V
Capacitance @ Vr, F	60	pF @ 4V, 1MHz
Package / Case	DO-214AB, SMC	—
Mounting Type	Surface Mount	—
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 R6 is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

Voltage - DC Reverse (Vr) (Max): 400 V
Current - Average Rectified (Io): 3 A
Package / Case: DO-214AB, SMC
Mounting Type: Surface Mount
Operating Temperature Range: -55°C to 150°C
RoHS Status: ROHS3 Compliant

Acceptable Variation Parameters:

Voltage - Forward (Vf) (Max) @ If: 1.15 V to 1.2 V
Reverse Recovery Time (trr): 1.5 µs to 2.5 µs
Current - Reverse Leakage @ Vr: 5 µA to 10 µA @ 400 V
Capacitance @ Vr, F: 20 pF to 60 pF @ 4V, 1MHz

Substitute parts are grouped into two categories: Parametric Equivalents (identical electrical specifications) and Similar Parts (minor parameter variations within acceptable engineering tolerances). All substitute parts maintain the same package footprint and mounting methodology, ensuring direct board-level compatibility.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Vr (Max) [V]	Io [A]	Vf (Max) [V]	trr [µs]	Ir @ Vr [µA]	C @ Vr [pF]	Package	Packaging Type	Product Status
S3G R6	Taiwan Semiconductor Corporation	400	3	1.15 @ 3A	1.5	10 @ 400V	60 @ 4V	DO-214AB	—	Discontinued
S3GH	Taiwan Semiconductor Corporation	400	3	1.15 @ 3A	1.5	10 @ 400V	60 @ 4V	DO-214AB	Tape & Reel (TR)	Active
S3G-TP	Micro Commercial Co	400	3	1.2 @ 3A	—	10 @ 400V	—	DO-214AB	Tape & Reel (TR)	Not For New Designs
ACGRC304-HF	Comchip Technology	400	3	1.15 @ 3A	—	5 @ 400V	20 @ 4V	DO-214AB	Tape & Reel (TR)	Active
S3G-E3/57T	Vishay General Semiconductor - Diodes Division	400	3	1.15 @ 2.5A	2.5	10 @ 400V	60 @ 4V	DO-214AB	Cut Tape (CT)	Active
S3G-E3/9AT	Vishay General Semiconductor - Diodes Division	400	3	1.15 @ 2.5A	2.5	10 @ 400V	60 @ 4V	DO-214AB	Tape & Reel (TR)	Active
S3G-M3/57T	Vishay General Semiconductor - Diodes Division	400	3	1.15 @ 2.5A	2.5	10 @ 400V	60 @ 4V	DO-214AB	Tape & Reel (TR)	Active
S3G-M3/9AT	Vishay General Semiconductor - Diodes Division	400	3	1.15 @ 2.5A	2.5	10 @ 400V	60 @ 4V	DO-214AB	Tape & Reel (TR)	Active
S3GHE3_A/H	Vishay General Semiconductor - Diodes Division	400	3	1.15 @ 2.5A	2.5	10 @ 400V	60 @ 4V	DO-214AB	Cut Tape (CT)	Active
S3GHE3_A/I	Vishay General Semiconductor - Diodes Division	400	3	1.15 @ 2.5A	2.5	10 @ 400V	60 @ 4V	DO-214AB	Cut Tape (CT)	Active
S3GHM3_A/H	Vishay General Semiconductor - Diodes Division	400	3	1.15 @ 2.5A	2.5	10 @ 400V	60 @ 4V	DO-214AB	Tape & Reel (TR)	Active

Engineering Selection Recommendations

Primary Recommendation: S3GH

The S3GH from Taiwan Semiconductor Corporation is the direct parametric equivalent to the S3G R6. It maintains identical electrical specifications including 400V reverse voltage, 3A average rectified current, 1.15V forward voltage at 3A, and 1.5µs reverse recovery time. The S3GH is currently active in production and available in Tape & Reel packaging with 3728 pieces in stock. This part is the preferred substitute for direct replacement in existing designs.

Secondary Recommendations: Vishay General Semiconductor Diodes Division Parts

The S3G-E3/57T, S3G-E3/9AT, S3G-M3/57T, S3G-M3/9AT, S3GHE3_A/H, S3GHE3_A/I, and S3GHM3_A/H are all active Vishay products that meet the 400V/3A electrical requirements. These parts exhibit slightly longer reverse recovery times (2.5µs versus 1.5µs) and forward voltage specifications at 2.5A rather than 3A, but remain functionally equivalent within standard rectifier diode application tolerances. Automotive-grade variants (S3GHE3_A/H, S3GHE3_A/I, S3GHM3_A/H) carry AEC-Q101 qualification and are suitable for automotive and high-reliability applications. Packaging options include Cut Tape (CT) and Tape & Reel (TR) configurations.

Alternative Recommendation: ACGRC304-HF

The ACGRC304-HF from Comchip Technology is an active parametric equivalent with identical 400V/3A ratings and 1.15V forward voltage. This part features lower reverse leakage current (5µA versus 10µA) and reduced capacitance (20pF versus 60pF), which may provide performance advantages in specific circuit topologies. The ACGRC304-HF carries AEC-Q101 automotive qualification and is available in Tape & Reel packaging with 3597 pieces in stock.

Not Recommended for New Designs: S3G-TP

The S3G-TP from Micro Commercial Co meets the core electrical requirements but carries a "Not For New Designs" product status designation. While functionally suitable for legacy system repairs, this part should not be selected for new product development.

Frequently Asked Questions (FAQ)

Q: Can the S3GH directly replace the S3G R6 on existing circuit boards?

A: Yes. The S3GH is a parametric equivalent with identical electrical specifications and the same DO-214AB package footprint. Direct board-level substitution is supported without circuit modification.

Q: What is the difference between the Vishay S3G-E3/57T and S3G-E3/9AT parts?

A: Both parts are electrically identical with 400V/3A ratings and identical electrical parameters. The primary difference is packaging: S3G-E3/57T is supplied in Cut Tape (CT) format, while S3G-E3/9AT is supplied in Tape & Reel (TR) format. Selection depends on assembly process requirements.

Q: Are the automotive-grade variants (S3GHE3_A/H, S3GHE3_A/I) suitable for non-automotive applications?

A: Yes. Automotive-grade components with AEC-Q101 qualification exceed the reliability and quality requirements of standard industrial applications. These parts are fully compatible with non-automotive designs and provide enhanced reliability margins.

Q: What does the reverse recovery time difference (1.5µs versus 2.5µs) mean for circuit performance?

A: Reverse recovery time affects switching speed and switching losses in rectifier circuits. The S3G R6 and S3GH with 1.5µs recovery time switch faster than Vishay variants with 2.5µs recovery time. For standard 50/60 Hz AC rectification applications, this difference is negligible. For higher-frequency switching applications, the faster recovery time may provide efficiency advantages.

Q: Can I use the ACGRC304-HF as a substitute if lower reverse leakage current is required?

A: Yes. The ACGRC304-HF features 5µA reverse leakage current compared to 10µA in the S3G R6, along with reduced capacitance (20pF versus 60pF). These characteristics make it suitable for applications where lower leakage or capacitance is beneficial, while maintaining full 400V/3A electrical compatibility.

Q: What is the significance of the RoHS3 compliance marking?

A: RoHS3 compliance indicates the part meets Restriction of Hazardous Substances Directive requirements, confirming the absence of lead, cadmium, mercury, and other restricted substances. All listed substitute parts carry RoHS3 compliance, ensuring regulatory compatibility with modern manufacturing and environmental standards.

Q: Are there packaging considerations when switching from the discontinued S3G R6 to active substitutes?

A: The S3G R6 original packaging type is not specified in available data. All active substitute parts are available in either Cut Tape (CT) or Tape & Reel (TR) packaging, both standard for surface mount assembly. Verify your assembly equipment compatibility with the selected packaging format before procurement.

Q: Why is the S3G-TP marked "Not For New Designs"?

A: The "Not For New Designs" status indicates the manufacturer has discontinued active development and support for this part. While it remains functionally compatible, it should not be selected for new product development due to potential future supply discontinuation and lack of manufacturer support.

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