RS3J M6G Equivalent & Substitute Parts

Part Overview

The RS3J M6G is a general-purpose rectifier diode manufactured by Taiwan Semiconductor Corporation, rated for 600 V DC reverse voltage and 3 A 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 design and procurement requirements. Equivalent parts maintain identical electrical and mechanical specifications, while substitute parts offer functional alternatives with minor parameter variations suitable for the same application space.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	600	V
Current - Average Rectified (Io)	3	A
Voltage - Forward (Vf) (Max) @ If	1.3 @ 3	V @ A
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	—
Reverse Recovery Time (trr)	250	ns
Current - Reverse Leakage @ Vr	10	µA @ 600 V
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 RS3J M6G is determined by the following critical parameters:

Mandatory Matching Parameters:

Voltage - DC Reverse (Vr) (Max): 600 V
Current - Average Rectified (Io): 3 A
Package / Case: DO-214AB, SMC
Mounting Type: Surface Mount

Allowable Variation Parameters:

Voltage - Forward (Vf) (Max) @ If: ±0.1 V tolerance acceptable
Reverse Recovery Time (trr): Variation acceptable if speed classification maintained
Current - Reverse Leakage @ Vr: Lower values acceptable
Operating Temperature - Junction: Extended ranges acceptable
Product Status: Active parts preferred over discontinued

Parts are grouped into three categories:

Parametric Equivalents: Identical electrical specifications and base product number (RS3J series variants).

Direct Manufacturers: Alternative manufacturers with matching core specifications (600 V, 3 A, DO-214AB).

Similar Parts: Functionally compatible with minor parameter deviations (forward voltage, recovery time, leakage current) that do not compromise application performance.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Vr (Max) V	Io (A)	Vf (Max) @ If (V @ A)	Speed	trr (ns)	Ir @ Vr (µA @ V)	Package	Temp Range (°C)	Product Status
RS3J M6G	Taiwan Semiconductor Corporation	600	3	1.3 @ 3	Fast Recovery ≤ 500ns	250	10 @ 600	DO-214AB, SMC	-55 to 150	Discontinued
RS3J V7G	Taiwan Semiconductor Corporation	600	3	1.3 @ 3	Fast Recovery ≤ 500ns	250	10 @ 600	DO-214AB, SMC	-55 to 150	Discontinued
RS3JH	Taiwan Semiconductor Corporation	600	3	1.3 @ 3	Fast Recovery ≤ 500ns	250	10 @ 600	DO-214AB, SMC	-55 to 150	Active
S3J-TP	Micro Commercial Co	600	3	1.2 @ 3	Standard Recovery >500ns	—	10 @ 600	DO-214AB, SMC	-55 to 150	Active
CFRC305-G	Comchip Technology	600	3	1.3 @ 3	Fast Recovery ≤ 500ns	250	5 @ 600	DO-214AB, SMC	—	Active
ER3J-TP	Micro Commercial Co	600	3	1.7 @ 3	Fast Recovery ≤ 500ns	35	5 @ 600	DO-214AB, SMC	-50 to 175	Active
MURS360-E3/57T	Vishay General Semiconductor - Diodes Division	600	3	1.28 @ 3	Fast Recovery ≤ 500ns	75	10 @ 600	DO-214AB, SMC	-65 to 175	Active
MURS360-E3/9AT	Vishay General Semiconductor - Diodes Division	600	3	1.28 @ 3	Fast Recovery ≤ 500ns	75	10 @ 600	DO-214AB, SMC	-65 to 175	Active
MURS360T3G	onsemi	600	3	1.25 @ 3	Fast Recovery ≤ 500ns	75	10 @ 600	DO-214AB, SMC	-65 to 175	Active
RS3J-13-F	Diodes Incorporated	600	3	1.3 @ 3	Fast Recovery ≤ 500ns	250	5 @ 600	DO-214AB, SMC	-65 to 150	Active

Engineering Selection Recommendations

Primary Recommendation: RS3JH

The RS3JH from Taiwan Semiconductor Corporation is the direct parametric equivalent with identical electrical specifications to the RS3J M6G. This part maintains all critical parameters including 600 V reverse voltage, 3 A average rectified current, 1.3 V forward voltage at 3 A, 250 ns reverse recovery time, and DO-214AB package. The RS3JH is currently in active production status with automotive-grade qualification (AEC-Q101) and ROHS3 compliance, providing superior long-term availability and supply chain stability compared to the discontinued RS3J M6G.

Secondary Recommendation: RS3J-13-F

The RS3J-13-F from Diodes Incorporated provides parametric equivalence with identical electrical specifications and active product status. This part shares the RS3J base product number designation and maintains all critical performance parameters. Extended operating temperature range (-65°C to 150°C) provides additional thermal margin. ROHS3 compliance and MSL 1 rating confirm environmental and moisture handling compatibility.

Tertiary Recommendation: MURS360T3G

The MURS360T3G from onsemi meets all mandatory electrical specifications with 600 V reverse voltage, 3 A average rectified current, and DO-214AB package. Forward voltage of 1.25 V at 3 A is within acceptable tolerance. Fast recovery speed classification (≤ 500ns) and 75 ns reverse recovery time support high-frequency switching applications. Extended operating temperature range (-65°C to 175°C) and active production status ensure availability. ROHS3 compliance and MSL 1 rating confirm regulatory alignment.

Alternative Consideration: S3J-TP

The S3J-TP from Micro Commercial Co provides functional compatibility with matching 600 V, 3 A, and DO-214AB specifications. Forward voltage of 1.2 V represents a 0.1 V improvement over the original specification. Standard recovery speed classification (>500ns) indicates slower switching characteristics suitable for lower-frequency rectification applications. Active production status and high inventory availability support procurement flexibility.

Not Recommended: CGRC505-G

The CGRC505-G from Comchip Technology specifies 5 A average rectified current, exceeding the 3 A requirement of the RS3J M6G. While this part maintains 600 V reverse voltage and DO-214AB package compatibility, the higher current rating introduces unnecessary design margin and potential cost inefficiency. This part is suitable only for applications requiring 5 A rectification capacity.

Frequently Asked Questions (FAQ)

Q: Can RS3J M6G be directly replaced with RS3JH?

A: Yes. The RS3JH is a parametric equivalent with identical electrical specifications (600 V, 3 A, 1.3 V forward voltage, 250 ns recovery time) and identical DO-214AB package. The primary difference is active production status and automotive-grade qualification. Direct substitution is supported without circuit modification.

Q: What is the difference between Fast Recovery and Standard Recovery speed classifications?

A: Fast Recovery diodes exhibit reverse recovery time ≤ 500 ns and are suitable for high-frequency switching applications. Standard Recovery diodes have reverse recovery time > 500 ns and are optimized for lower-frequency rectification. The RS3J M6G specifies Fast Recovery. Substitutes maintaining Fast Recovery classification (RS3JH, CFRC305-G, ER3J-TP, MURS360 series, RS3J-13-F) preserve switching performance. The S3J-TP with Standard Recovery classification is suitable only for applications not requiring fast switching.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts carry ROHS3 compliance certification, confirming restriction of hazardous substances in accordance with EU Directive 2011/65/EU. This ensures regulatory alignment with modern procurement and environmental standards.

Q: What does MSL 1 (Unlimited) moisture sensitivity level mean?

A: MSL 1 indicates the component has unlimited shelf life and requires no special moisture control during storage or handling. This classification applies to all listed parts and eliminates moisture-related reliability concerns during procurement, warehousing, and assembly operations.

Q: Can S3J-TP be used as a direct replacement?

A: S3J-TP provides functional compatibility with matching 600 V, 3 A, and DO-214AB specifications. However, the Standard Recovery speed classification (>500ns) differs from the Fast Recovery specification (≤ 500ns) of the RS3J M6G. S3J-TP is suitable for low-frequency rectification applications but not recommended for high-frequency switching circuits where the original fast recovery characteristic is required.

Q: What is the significance of the extended temperature range in MURS360T3G (-65°C to 175°C)?

A: The MURS360T3G operating temperature range of -65°C to 175°C exceeds the RS3J M6G specification of -55°C to 150°C. This extended range provides additional thermal margin for applications operating at elevated ambient temperatures or with high junction temperature conditions. The extended lower temperature limit (-65°C vs. -55°C) supports cryogenic or aerospace applications.

Q: Are packaging variants (Tape & Reel vs. Cut Tape) electrically equivalent?

A: Yes. Packaging variants (Tape & Reel, Cut Tape, Digi-Reel) represent different supply and handling formats only. Electrical specifications, performance characteristics, and component functionality remain identical. Selection between packaging variants depends on assembly process requirements and procurement volume, not electrical compatibility.

Q: Why is RS3J-13-F from Diodes Incorporated recommended over other alternatives?

A: RS3J-13-F maintains the RS3J base product number and provides parametric equivalence with identical electrical specifications. Active production status ensures long-term availability. Extended operating temperature range (-65°C to 150°C) provides additional thermal margin. Lower reverse leakage current (5 µA vs. 10 µA) represents improved performance. ROHS3 compliance and MSL 1 rating confirm regulatory and environmental compatibility.

Q: Can CGRC505-G be used in place of RS3J M6G?

A: CGRC505-G is not recommended as a direct substitute. While this part maintains 600 V reverse voltage and DO-214AB package compatibility, the 5 A average rectified current rating exceeds the 3 A requirement of the RS3J M6G. Use of CGRC505-G introduces unnecessary design margin and potential cost inefficiency. This part is suitable only for applications requiring 5 A rectification capacity.

Q: What is the impact of forward voltage variation among substitute parts?

A: Forward voltage variations among substitute parts (1.2 V to 1.7 V at 3 A) affect power dissipation and thermal performance but do not compromise rectification function. Parts with lower forward voltage (S3J-TP at 1.2 V, MURS360T3G at 1.25 V) reduce power loss. Parts with higher forward voltage (ER3J-TP at 1.7 V) increase power dissipation. Selection depends on thermal design requirements and efficiency targets. All variations remain within acceptable engineering tolerance for general-purpose rectification applications.

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