S2J Equivalent & Substitute Parts Reference

Part Overview

The S2J is a general-purpose rectifier diode rated for 600 V DC reverse voltage and 2 A average rectified current in a surface mount DO-214AA (SMB) package. Manufactured by Micro Commercial Co, this component is classified as obsolete product status. Due to its obsolete designation, equivalent and substitute parts from active manufacturers are necessary for new designs and ongoing production requirements. Substitute diodes must maintain compatibility with the DO-214AA package footprint and satisfy the electrical performance requirements of 600 V reverse voltage rating and 2 A current capacity.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	600	V
Current - Average Rectified (Io)	2	A
Voltage - Forward (Vf) (Max) @ If	1.15 @ 2 A	V
Reverse Recovery Time (trr)	2	µs
Current - Reverse Leakage @ Vr	10	µA @ 600 V
Speed Classification	Standard Recovery >500ns, > 200mA (Io)	—
Package / Case	DO-214AA, SMB	—
Mounting Type	Surface Mount	—
Operating Temperature - Junction	-55 to 150	°C

Substitute Part Grouping Explanation

Substitute parts for the S2J rectifier diode are grouped based on strict electrical and mechanical compatibility criteria. The primary substitution parameters are:

Critical Parameters for Substitution:

Voltage - DC Reverse (Vr) (Max): Must equal or exceed 600 V
Current - Average Rectified (Io): Must equal or exceed 2 A
Package / Case: Must be DO-214AA or SMB equivalent
Mounting Type: Must be Surface Mount
Forward Voltage (Vf): Must not exceed 1.15 V @ rated current

Grouping Categories:

Direct Equivalents (2 A Rating): Parts with identical 2 A current rating, 600 V reverse voltage, and standard recovery characteristics. These include S2J from Nexperia USA Inc., S2JH from Taiwan Semiconductor Corporation, SB2J-M3/52T and SB2J-M3/5BT from Vishay General Semiconductor - Diodes Division.

Reduced Current Equivalents (1.5 A Rating): Parts rated for 1.5 A average rectified current with 600 V reverse voltage. These include S2J/54 from Vishay General Semiconductor - Diodes Division and S2J-13-F from Diodes Incorporated. These parts are suitable for applications where the circuit current requirement does not exceed 1.5 A.

Fast Recovery Variant (2 A Rating): SURS8260T3G-VF01 from onsemi provides 2 A capacity at 600 V with fast recovery characteristics (75 ns trr) and automotive qualification. This part exhibits higher forward voltage (1.45 V @ 2 A) and faster recovery speed compared to the standard S2J specification.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Vr (Max) [V]	Io [A]	Vf (Max) [V]	trr [µs/ns]	Ir @ Vr [µA]	Package	Product Status	RoHS Status
S2J	Micro Commercial Co	600	2	1.15 @ 2 A	2 µs	10 @ 600 V	DO-214AA, SMB	Obsolete	Non-compliant
S2J/54	Vishay General Semiconductor - Diodes Division	600	1.5	1.15 @ 1.5 A	2 µs	1 @ 600 V	DO-214AA, SMB	Active	Non-compliant
S2J	Nexperia USA Inc.	600	2	1.15 @ 2 A	2 µs	1 @ 600 V	DO-214AA, SMB	Active	Non-compliant
S2J-13-F	Diodes Incorporated	600	1.5	1.15 @ 1.5 A	Standard >500ns	5 @ 600 V	DO-214AA, SMB	Active	ROHS3 Compliant
SURS8260T3G-VF01	onsemi	600	2	1.45 @ 2 A	75 ns	5 @ 600 V	DO-214AA, SMB	Not For New Designs	ROHS3 Compliant
S2JH	Taiwan Semiconductor Corporation	600	2	1.15 @ 2 A	1.5 µs	1 @ 600 V	DO-214AA, SMB	Active	ROHS3 Compliant
SB2J-M3/52T	Vishay General Semiconductor - Diodes Division	600	2	1.15 @ 2 A	2 µs	1 @ 600 V	DO-214AA, SMB	Active	ROHS3 Compliant
SB2J-M3/5BT	Vishay General Semiconductor - Diodes Division	600	2	1.15 @ 2 A	2 µs	1 @ 600 V	DO-214AA, SMB	Active	ROHS3 Compliant

Engineering Selection Recommendations

For Direct Replacement (Full 2 A Capacity):

The S2J from Nexperia USA Inc. provides the most direct equivalent to the obsolete Micro Commercial Co S2J. Both parts share identical electrical specifications: 600 V reverse voltage, 2 A average rectified current, 1.15 V forward voltage at 2 A, and 2 µs reverse recovery time. Nexperia's S2J is active product status with extensive inventory availability (2,447,738 pcs). This part maintains the original performance envelope without design modification.

S2JH from Taiwan Semiconductor Corporation offers equivalent electrical performance with active product status and ROHS3 compliance. The reverse recovery time is slightly improved at 1.5 µs compared to 2 µs. This part includes AEC-Q101 automotive qualification, suitable for applications requiring automotive-grade components.

SB2J-M3/52T and SB2J-M3/5BT from Vishay General Semiconductor - Diodes Division both provide 2 A capacity at 600 V with identical forward voltage and recovery characteristics to the original S2J. Both parts are active, ROHS3 compliant, and available in tape and reel packaging. These parts are suitable for high-volume production environments.

For Reduced Current Applications (1.5 A Maximum):

S2J/54 from Vishay General Semiconductor - Diodes Division is rated for 1.5 A at 600 V with identical forward voltage characteristics. This part is active product status but non-RoHS compliant. Use this part only when circuit current requirements do not exceed 1.5 A.

S2J-13-F from Diodes Incorporated provides 1.5 A capacity at 600 V with ROHS3 compliance and active product status. This part is suitable for applications requiring RoHS compliance with reduced current requirements.

For Automotive Applications:

S2JH from Taiwan Semiconductor Corporation includes AEC-Q101 qualification and ROHS3 compliance, making it suitable for automotive applications requiring qualified components.

SURS8260T3G-VF01 from onsemi is designated "Not For New Designs" and includes AEC-Q101 automotive qualification. This part exhibits fast recovery characteristics (75 ns) and higher forward voltage (1.45 V @ 2 A). Use this part only in legacy automotive designs where fast recovery performance is required and forward voltage elevation is acceptable.

RoHS Compliance Considerations:

The original S2J from Micro Commercial Co is RoHS non-compliant. For new designs requiring RoHS compliance, select from: S2JH (Taiwan Semiconductor Corporation), SB2J-M3/52T, SB2J-M3/5BT (Vishay General Semiconductor - Diodes Division), S2J-13-F (Diodes Incorporated), or SURS8260T3G-VF01 (onsemi). All these alternatives are ROHS3 compliant.

Frequently Asked Questions (FAQ)

Q: Can I use a 1.5 A rated diode (S2J/54 or S2J-13-F) as a direct replacement for the 2 A S2J?

A: No. The 1.5 A rated parts are suitable only for applications where the maximum circuit current does not exceed 1.5 A. If your circuit requires 2 A capacity, use a 2 A rated substitute such as S2J from Nexperia, S2JH from Taiwan Semiconductor Corporation, or SB2J-M3/52T from Vishay.

Q: What is the difference between standard recovery and fast recovery diodes?

A: The S2J uses standard recovery with reverse recovery time (trr) of 2 µs. SURS8260T3G-VF01 uses fast recovery with trr of 75 ns. Fast recovery diodes switch off more quickly, reducing switching losses in high-frequency applications. However, SURS8260T3G-VF01 exhibits higher forward voltage (1.45 V vs. 1.15 V), which increases conduction losses. Select fast recovery only if your circuit operates at frequencies where the switching loss reduction justifies the increased conduction loss.

Q: Are all substitute parts compatible with the same PCB footprint?

A: Yes. All substitute parts listed use the DO-214AA (SMB) package, which has identical footprint dimensions. Surface mount assembly equipment and PCB layouts designed for DO-214AA packages are compatible with all listed substitutes without modification.

Q: What does "Not For New Designs" mean for SURS8260T3G-VF01?

A: This designation indicates the part is available for existing production and legacy designs but should not be selected for new circuit designs. Manufacturers typically apply this status when a part is being phased out or superseded by newer alternatives. For new designs, select from parts with "Active" product status.

Q: Which substitute offers the best RoHS compliance and active product status?

A: S2JH from Taiwan Semiconductor Corporation and SB2J-M3/52T or SB2J-M3/5BT from Vishay General Semiconductor - Diodes Division all provide ROHS3 compliance with active product status and full 2 A capacity. S2JH additionally includes AEC-Q101 automotive qualification.

Q: Can I use the Nexperia S2J as a drop-in replacement for the obsolete Micro Commercial Co S2J?

A: Yes. The Nexperia S2J provides identical electrical specifications: 600 V reverse voltage, 2 A average rectified current, 1.15 V forward voltage at 2 A, and 2 µs reverse recovery time. The part is active product status with extensive inventory. This is the most direct equivalent replacement.

Q: What is the significance of reverse leakage current differences between parts?

A: Reverse leakage current (Ir) represents the small current flowing through the diode when reverse biased. The original S2J specifies 10 µA @ 600 V, while most substitutes specify 1 µA @ 600 V. Lower leakage current reduces power dissipation in reverse bias conditions. This difference is not significant for most general-purpose rectifier applications but becomes important in high-impedance circuits or low-power applications.

Q: Are there any temperature range differences between substitutes?

A: Yes. The original S2J and most substitutes operate from -55°C to 150°C junction temperature. However, Nexperia's S2J extends the lower temperature limit to -65°C. SURS8260T3G-VF01 extends the upper temperature limit to 175°C. Select based on your application's required operating temperature range.

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