S1JR2 Equivalent & Substitute Parts

Part Overview

The S1JR2 is a general-purpose rectifier diode manufactured by Taiwan Semiconductor Corporation, rated for 600 V DC reverse voltage and 1 A average rectified current in a surface mount DO-214AC (SMA) package. This component is classified as Active and complies with RoHS3 and REACH standards. Alternative part numbers become necessary when the S1JR2 experiences supply constraints, packaging format requirements, or when design specifications permit equivalent electrical performance from alternative manufacturers.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	600	V
Current - Average Rectified (Io)	1	A
Voltage - Forward (Vf) (Max) @ If	1.1 @ 1 A	V
Reverse Recovery Time (trr)	1.5	µs
Current - Reverse Leakage @ Vr	1	µA @ 600 V
Capacitance @ Vr, F	12	pF @ 4V, 1MHz
Operating Temperature - Junction	-55 to 175	°C
Package / Case	DO-214AC, SMA	—
Mounting Type	Surface Mount	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution eligibility for the S1JR2 is determined by strict equivalence across the following electrical and mechanical parameters:

Primary Substitution Criteria:

Voltage - DC Reverse (Vr) (Max): 600 V
Current - Average Rectified (Io): 1 A
Voltage - Forward (Vf) (Max) @ If: 1.1 V @ 1 A
Reverse Recovery Time (trr): 1.5 µs
Current - Reverse Leakage @ Vr: 1 µA @ 600 V
Capacitance @ Vr, F: 12 pF @ 4V, 1MHz
Package / Case: DO-214AC, SMA
Mounting Type: Surface Mount
Operating Temperature - Junction: -55°C to 175°C

Packaging Format Variations: Substitute parts are grouped by packaging format (Cut Tape, Tape & Reel, Digi-Reel) to accommodate different procurement and assembly workflows. All substitute parts maintain the same electrical specifications and surface mount DO-214AC package footprint.

Compliance Requirements: All substitute parts maintain RoHS3 compliance, REACH unaffected status, and MSL 1 rating, ensuring compatibility with standard manufacturing and environmental requirements.

Parameter Comparison

Part Number	Manufacturer	Vr (Max) [V]	Io [A]	Vf (Max) @ If [V]	trr [µs]	Ir @ Vr [µA]	C @ Vr [pF]	Tj [°C]	Package	Product Status
S1JR2	Taiwan Semiconductor Corporation	600	1	1.1 @ 1 A	1.5	1 @ 600 V	12 @ 4V, 1MHz	-55 to 175	DO-214AC, SMA	Active
S1J	YAGEO	600	1	1.1	—	—	—	—	DO-214AC, SMA	Active
S1J R3G	Taiwan Semiconductor Corporation	600	1	1.1 @ 1 A	1.5	1 @ 600 V	12 @ 4V, 1MHz	-55 to 175	DO-214AC, SMA	Discontinued at DiGi Electronics
S1JH	Taiwan Semiconductor Corporation	600	1	1.1 @ 1 A	1.5	1 @ 600 V	12 @ 4V, 1MHz	-55 to 175	DO-214AC, SMA	Active
GS1J_R1_00001	Panjit International Inc.	600	1	1.1 @ 1 A	1.5	1 @ 600 V	12 @ 4V, 1MHz	-55 to 150	DO-214AC, SMA	Active
MRA4005T1G	onsemi	600	1	1.1 @ 1 A	1.5	10 @ 600 V	—	-55 to 175	DO-214AC, SMA	Not For New Designs
MRA4005T3G	onsemi	600	1	1.1 @ 1 A	1.5	10 @ 600 V	—	-55 to 175	DO-214AC, SMA	Not For New Designs

Engineering Selection Recommendations

Primary Substitutes (Active Status):

The S1JH manufactured by Taiwan Semiconductor Corporation is the preferred substitute. It maintains identical electrical specifications to the S1JR2, including reverse recovery time, reverse leakage current, and capacitance characteristics. The S1JH is supplied in Tape & Reel packaging and carries AEC-Q101 automotive qualification, making it suitable for both commercial and automotive applications. Product status is Active.

The S1J manufactured by YAGEO is an alternative parametric equivalent with Active status. This part is available in Cut Tape and Digi-Reel packaging formats and provides the same core electrical performance for 600 V, 1 A rectification.

Secondary Substitutes (Limited Availability):

The S1J R3G, also from Taiwan Semiconductor Corporation, is electrically identical to the S1JR2 but is marked as Discontinued at DiGi Electronics. This part should be used only when supply of active alternatives is unavailable and existing inventory is confirmed.

The GS1J_R1_00001 from Panjit International Inc. meets all electrical specifications with one exception: the maximum operating junction temperature is -55°C to 150°C, compared to -55°C to 175°C for the S1JR2. This part is suitable for applications where the lower temperature ceiling does not present a constraint.

Not Recommended for New Designs:

The MRA4005T1G and MRA4005T3G from onsemi are marked as Not For New Designs. While they maintain the required voltage, current, and recovery time specifications, the reverse leakage current is specified at 10 µA @ 600 V, compared to 1 µA for the S1JR2. These parts should be used only in legacy design maintenance or when no other alternatives are available.

Frequently Asked Questions (FAQ)

Q: Can the S1JH be used as a direct replacement for the S1JR2?

A: Yes. The S1JH is a parametric equivalent with identical electrical specifications: 600 V reverse voltage, 1 A average rectified current, 1.1 V forward voltage drop, 1.5 µs reverse recovery time, and 1 µA reverse leakage current. Both parts use the DO-214AC (SMA) surface mount package. The primary difference is packaging format (Tape & Reel for S1JH versus the original format for S1JR2) and the addition of AEC-Q101 automotive qualification on the S1JH.

Q: What is the difference between the S1J and S1JR2?

A: The S1J from YAGEO is a parametric equivalent that meets the core electrical requirements: 600 V reverse voltage, 1 A current rating, and 1.1 V forward voltage. However, detailed specifications for reverse recovery time and reverse leakage current are not provided in the S1J datasheet parameters. Both parts use the DO-214AC (SMA) package. The S1J is available in Cut Tape and Digi-Reel packaging.

Q: Why are the MRA4005T1G and MRA4005T3G marked as "Not For New Designs"?

A: These onsemi parts are legacy products no longer recommended for new circuit designs. While they meet the voltage, current, and recovery time specifications, the reverse leakage current specification (10 µA @ 600 V) is higher than the S1JR2 (1 µA @ 600 V). This difference may affect circuit performance in applications sensitive to leakage current. These parts should be used only for maintaining existing designs or when no other alternatives are available.

Q: Does the GS1J_R1_00001 have any limitations compared to the S1JR2?

A: The GS1J_R1_00001 from Panjit International Inc. is electrically equivalent in all critical parameters except maximum operating junction temperature. The S1JR2 operates to 175°C, while the GS1J_R1_00001 operates to 150°C. For applications where the diode will not exceed 150°C junction temperature, this part is fully compatible. For high-temperature applications, the S1JH or S1JR2 should be used.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All substitute parts listed maintain RoHS3 compliance and REACH unaffected status, matching the environmental and regulatory requirements of the S1JR2.

Q: What packaging formats are available for substitutes?

A: Substitute parts are available in three packaging formats: Cut Tape (CT), Tape & Reel (TR), and Digi-Reel. All maintain the same DO-214AC (SMA) surface mount footprint and are compatible with standard pick-and-place assembly equipment. Selection depends on procurement volume and assembly workflow requirements.

Q: Can I use the S1J R3G if it is discontinued?

A: The S1J R3G is electrically identical to the S1JR2 and can be used as a substitute if existing inventory is available. However, since it is marked as Discontinued at DiGi Electronics, it should not be selected for new designs or long-term production runs. Use the S1JH or S1J for ongoing supply assurance.

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