S8GC M6G General Purpose Rectifier Diode 400V 8A DO-214AB

Part Overview

The S8GC M6G is a general purpose rectifier diode manufactured by Taiwan Semiconductor Corporation, rated for 400V DC reverse voltage and 8A average rectified current in a surface mount DO-214AB (SMC) package. This component is classified as discontinued at DiGi Electronics, necessitating identification of equivalent and substitute parts for ongoing design requirements and procurement needs. The diode operates across a junction temperature range of -55°C to 150°C and complies with RoHS3 and REACH standards.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) Maximum	400	V
Current - Average Rectified (Io)	8	A
Voltage - Forward (Vf) Maximum @ If	985 mV @ 8 A	mV @ A
Speed Classification	Standard Recovery >500ns, > 200mA (Io)	—
Current - Reverse Leakage @ Vr	10	µA @ 400 V
Capacitance @ Vr, F	48	pF @ 4V, 1MHz
Package / Case	DO-214AB, SMC	—
Operating Temperature - Junction	-55 to 150	°C
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution of the S8GC M6G is determined by the following critical electrical and mechanical parameters:

Primary Substitution Criteria:

Voltage - DC Reverse (Vr) Maximum: 400V minimum
Current - Average Rectified (Io): 8A minimum
Package / Case: DO-214AB (SMC) surface mount
Mounting Type: Surface Mount

Secondary Compatibility Factors:

Forward voltage (Vf) characteristics at rated current
Recovery speed classification (Standard or Fast Recovery acceptable)
Reverse leakage current specifications
Operating temperature range compatibility
RoHS3 compliance and MSL rating

The S8GC M6G operates at 8A current rating with standard recovery characteristics. Substitute parts must meet or exceed the 400V reverse voltage and 8A current specifications while maintaining the same DO-214AB package footprint. Parts with lower current ratings (3A, 5A) are classified as similar but not direct substitutes due to insufficient current capacity. The parametric equivalent S8GC V7G from Taiwan Semiconductor Corporation provides identical electrical specifications with different packaging (Cut Tape versus standard packaging).

Parameter Comparison

Part Number	Manufacturer	Vr (Max) V	Io (A)	Vf (Max) mV @ If	Speed	Reverse Leakage µA @ Vr	Package	Product Status
S8GC M6G	Taiwan Semiconductor Corporation	400	8	985 @ 8A	Standard >500ns	10 @ 400V	DO-214AB	Discontinued
S8GC V7G	Taiwan Semiconductor Corporation	400	8	985 @ 8A	Standard >500ns	10 @ 400V	DO-214AB	Discontinued
CGRC504-G	Comchip Technology	400	5	1150 @ 5A	Standard >500ns	10 @ 400V	DO-214AB	Active
CFRC304-G	Comchip Technology	400	3	1300 @ 3A	Fast ≤500ns	5 @ 400V	DO-214AB	Active
CSFC304-G	Comchip Technology	400	3	1250 @ 3A	Fast ≤500ns	5 @ 400V	DO-214AB	Active
CURC304-G	Comchip Technology	400	3	1300 @ 3A	Fast ≤500ns	5 @ 400V	DO-214AB	Active
ER3G-TP	Micro Commercial Co	400	3	1250 @ 3A	Fast ≤500ns	5 @ 400V	DO-214AB	Active
ES3G-E3/57T	Vishay General Semiconductor	400	3	1100 @ 3A	Fast ≤500ns	10 @ 400V	DO-214AB	Active
ES3G-E3/9AT	Vishay General Semiconductor	400	3	1100 @ 3A	Fast ≤500ns	10 @ 400V	DO-214AB	Active
ES3GHE3_A/I	Vishay General Semiconductor	400	3	1100 @ 3A	Fast ≤500ns	10 @ 400V	DO-214AB	Active
MURS340S-E3/52T	Vishay General Semiconductor	400	1.5	1450 @ 3A	Fast ≤500ns	5 @ 400V	DO-214AB	Active

Engineering Selection Recommendations

Direct Parametric Equivalent: The S8GC V7G from Taiwan Semiconductor Corporation is the direct parametric equivalent to the S8GC M6G, offering identical electrical specifications (400V, 8A, 985mV forward voltage) in the same DO-214AB package. Both parts are discontinued at DiGi Electronics; however, S8GC V7G maintains higher inventory availability (1281 pcs) compared to S8GC M6G (608 pcs). Both parts comply with RoHS3 and carry MSL 1 (Unlimited) moisture sensitivity rating.

Current-Limited Alternatives: Parts with lower current ratings (3A to 5A) are available from active manufacturers including Comchip Technology, Micro Commercial Co, and Vishay General Semiconductor. These alternatives are suitable only for applications where the 8A current requirement can be reduced or where multiple devices can be paralleled. CGRC504-G from Comchip Technology provides 5A capacity at 400V in the same package with active product status and higher inventory (743 pcs).

Compliance and Availability: All listed substitute parts maintain RoHS3 compliance and MSL 1 rating. Active product status is confirmed for Comchip Technology, Micro Commercial Co, and Vishay General Semiconductor offerings, ensuring long-term availability and supply chain stability. The S8GC V7G variant remains the preferred choice for direct replacement where 8A capacity is required.

Frequently Asked Questions (FAQ)

Q: Can I use a 5A rated diode (CGRC504-G) as a substitute for the 8A S8GC M6G?

A: No. The CGRC504-G is rated for 5A average rectified current, which is insufficient for applications requiring 8A capacity. Using an undersized component will result in excessive junction temperature rise and reduced component lifespan. Direct substitution requires a minimum 8A rating.

Q: What is the difference between S8GC M6G and S8GC V7G?

A: Both parts are manufactured by Taiwan Semiconductor Corporation with identical electrical specifications (400V, 8A, 985mV forward voltage). The primary difference is packaging: S8GC M6G uses standard packaging while S8GC V7G is supplied in Cut Tape (CT) format. Electrical performance and DO-214AB footprint are identical.

Q: Are the 3A diodes (ES3G-E3/57T, CFRC304-G, CSFC304-G) suitable replacements?

A: No. These parts are rated for 3A average rectified current, which represents a 62.5% reduction from the 8A requirement of the S8GC M6G. While they share the same 400V reverse voltage rating and DO-214AB package, the current capacity is insufficient for direct substitution.

Q: Do all substitute parts use the same DO-214AB package?

A: Yes. All parts listed in this reference maintain the DO-214AB (SMC) surface mount package, ensuring mechanical and footprint compatibility. Mounting type is surface mount for all alternatives.

Q: What is the significance of "Standard Recovery" versus "Fast Recovery" speed classification?

A: The S8GC M6G uses Standard Recovery (>500ns) classification. Substitute parts with Fast Recovery (≤500ns) characteristics have faster switching behavior and lower reverse recovery time. Fast Recovery diodes are acceptable substitutes from an electrical standpoint but may exhibit different transient response characteristics in specific circuit topologies.

Q: Why is the S8GC M6G discontinued if alternatives exist?

A: Product discontinuation reflects manufacturer production decisions and market demand shifts. The availability of parametric equivalent S8GC V7G and active alternatives from other manufacturers provides design continuity. Designers should transition to active product status parts for new designs to ensure long-term supply availability.

Q: Can I parallel multiple lower-rated diodes to achieve 8A capacity?

A: Paralleling diodes requires careful thermal and current distribution management. This approach is not addressed in the provided parametric data and falls outside the scope of direct substitution guidance. Consult application-specific design guidelines for parallel diode configurations.

Q: Are automotive-qualified versions available?

A: Yes. The ES3GHE3_A/I from Vishay General Semiconductor carries automotive qualification (AEC-Q101) with 3A rating. However, this part does not meet the 8A current requirement of the S8GC M6G. Automotive-qualified 8A alternatives are not listed in the provided substitute data.

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