S3J Equivalent & Substitute Parts

Part Overview

The S3J is an active, general-purpose rectifier diode manufactured by Diotec Semiconductor, rated for 600 V DC reverse voltage and 3 A average rectified current in a surface mount SMC (DO-214AB) package. This component is designed for standard recovery applications with a maximum forward voltage of 1.15 V at 3 A and operates across a junction temperature range of -50°C to 150°C. The S3J is ROHS3 compliant and currently maintained in active production status with 851 pieces in stock. Equivalent and substitute parts are identified based on matching or exceeding the electrical performance parameters and package compatibility requirements of the original specification.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	600	V
Current - Average Rectified (Io)	3	A
Voltage - Forward (Vf) (Max) @ If	1.15 @ 3 A	V
Reverse Recovery Time (trr)	1.5	µs
Current - Reverse Leakage @ Vr	5	µA @ 600 V
Package / Case	DO-214AB, SMC	—
Operating Temperature - Junction	-50 to 150	°C
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitute parts for the S3J are qualified based on the following electrical and mechanical parameters:

Voltage Rating: Minimum 600 V DC reverse voltage (Vr)
Current Rating: Minimum 3 A average rectified current (Io)
Package Type: Surface mount SMC (DO-214AB) package
Forward Voltage: Maximum 1.25 V at 3 A (allows for minor variation in forward drop)
Reverse Leakage: Maximum 10 µA at 600 V (acceptable tolerance)
Compliance: ROHS3 compliant status required
Product Status: Active production status

The MURS360T3G from onsemi meets all substitution criteria. It maintains identical voltage and current ratings, uses the same SMC package, and provides enhanced performance characteristics including faster recovery time and extended operating temperature range, while maintaining full ROHS3 compliance.

Parameter Comparison

Parameter	S3J (Diotec)	MURS360T3G (onsemi)	Unit
Voltage - DC Reverse (Vr) (Max)	600	600	V
Current - Average Rectified (Io)	3	3	A
Voltage - Forward (Vf) (Max) @ If	1.15 @ 3 A	1.25 @ 3 A	V
Speed Classification	Standard Recovery >500ns	Fast Recovery ≤500ns	—
Reverse Recovery Time (trr)	1.5	0.075	µs
Current - Reverse Leakage @ Vr	5 @ 600 V	10 @ 600 V	µA
Package / Case	DO-214AB, SMC	DO-214AB, SMC	—
Operating Temperature - Junction	-50 to 150	-65 to 175	°C
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	—
Product Status	Active	Active	—

Engineering Selection Recommendations

Both the S3J and MURS360T3G are active production components with ROHS3 compliance and REACH unaffected status, qualifying them for use in regulated applications. The S3J provides standard recovery characteristics suitable for general-purpose rectification circuits. The MURS360T3G offers enhanced performance through fast recovery operation with a reverse recovery time of 75 nanoseconds compared to 1.5 microseconds for the S3J, making it suitable for higher-frequency switching applications while maintaining identical voltage and current ratings. Both components are packaged in the DO-214AB SMC form factor, ensuring mechanical and thermal compatibility in existing PCB layouts. Selection between these parts depends on application frequency requirements and thermal management considerations, with the MURS360T3G providing superior performance margins across an extended operating temperature range.

Frequently Asked Questions (FAQ)

Q: Can the MURS360T3G directly replace the S3J in all applications?

A: The MURS360T3G is electrically and mechanically compatible with the S3J. Both components share identical voltage (600 V) and current (3 A) ratings and use the same DO-214AB SMC package. The MURS360T3G exhibits faster recovery characteristics and operates across a wider temperature range (-65°C to 175°C versus -50°C to 150°C), making it suitable for all S3J applications with no design modifications required.

Q: What is the significance of the recovery time difference between these parts?

A: The S3J has a standard recovery time of 1.5 microseconds, while the MURS360T3G has a fast recovery time of 75 nanoseconds. Standard recovery diodes are appropriate for low-frequency rectification circuits. Fast recovery diodes reduce switching losses and are preferred in higher-frequency applications, power factor correction circuits, and switch-mode power supplies. The choice depends on the operating frequency of the target application.

Q: Are both parts suitable for high-temperature applications?

A: The S3J operates to a maximum junction temperature of 150°C, while the MURS360T3G extends to 175°C. For applications requiring operation near or above 150°C, the MURS360T3G provides additional thermal margin. Both parts maintain their electrical specifications within their respective operating ranges.

Q: Do these parts require different PCB footprints?

A: No. Both the S3J and MURS360T3G use the DO-214AB SMC package, which specifies identical physical dimensions and pin spacing. Existing PCB layouts designed for the S3J accommodate the MURS360T3G without modification.

Q: What compliance certifications apply to both parts?

A: Both the S3J and MURS360T3G are ROHS3 compliant and REACH unaffected, meeting environmental and regulatory requirements for commercial and industrial applications. Both parts are in active production status.

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