S1JR3 Equivalent & Substitute Parts

Part Overview

The S1JR3 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 product status and is RoHS3 compliant with unlimited moisture sensitivity level (MSL 1).

Equivalent and substitute parts are identified based on matching electrical performance parameters: reverse voltage rating, forward current capacity, forward voltage drop, recovery characteristics, and package compatibility. Alternative sources and packaging configurations are documented to support procurement flexibility and supply chain continuity.

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	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	—
Operating Temperature - Junction	-55 to 175	°C
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitute parts are classified into two categories based on electrical and mechanical compatibility:

Parametric Equivalents share identical or functionally equivalent electrical specifications across all critical parameters: reverse voltage (600 V), average rectified current (1 A), forward voltage (1.1 V @ 1 A), recovery time characteristics (1.5 µs), reverse leakage current (1 µA @ 600 V), and package form factor (DO-214AC/SMA). These parts are direct functional replacements with no circuit redesign required.

Similar Parts maintain the same voltage and current ratings and package type but exhibit variations in one or more secondary parameters such as forward voltage drop, reverse recovery time, reverse leakage current, or capacitance. These parts are functionally compatible but may exhibit minor performance differences in specific circuit applications.

Substitution eligibility is determined by:

Reverse voltage rating ≥ 600 V
Average rectified current ≥ 1 A
Package compatibility: DO-214AC or SMA surface mount
Operating temperature range encompassing -55°C to 175°C
RoHS3 compliance status

Parameter Comparison

Manufacturer Part Number	Manufacturer	Vr (Max) [V]	Io [A]	Vf (Max) @ If [V]	trr [µs]	Ir @ Vr [µA]	Package	Product Status	RoHS Status
S1JR3	Taiwan Semiconductor Corporation	600	1	1.1 @ 1 A	1.5	1 @ 600 V	DO-214AC (SMA)	Active	ROHS3 Compliant
S1J	YAGEO	600	1	1.1 @ 1 A	—	—	DO-214AC (SMA)	Active	ROHS3 Compliant
S1J R3G	Taiwan Semiconductor Corporation	600	1	1.1 @ 1 A	1.5	1 @ 600 V	DO-214AC (SMA)	Discontinued at DiGi Electronics	ROHS3 Compliant
S1JH	Taiwan Semiconductor Corporation	600	1	1.1 @ 1 A	1.5	1 @ 600 V	DO-214AC (SMA)	Active	ROHS3 Compliant
ES1J	HY Electronic (Cayman) Limited	600	1	1.7 @ 1 A	0.035	5 @ 600 V	DO-214AC (SMA)	Active	RoHS Compliant
GF1J	onsemi	600	1	1.0 @ 1 A	2	5 @ 600 V	DO-214AC (SMA)	Not For New Designs	ROHS3 Compliant
MRA4005T1G	onsemi	600	1	1.1 @ 1 A	—	10 @ 600 V	DO-214AC (SMA)	Not For New Designs	ROHS3 Compliant
MRA4005T3G	onsemi	600	1	1.1 @ 1 A	—	10 @ 600 V	DO-214AC (SMA)	Not For New Designs	ROHS3 Compliant

Engineering Selection Recommendations

Primary Substitutes (Parametric Equivalents)

S1JH (Taiwan Semiconductor Corporation) is the recommended primary substitute. This part maintains identical electrical specifications to the S1JR3 across all critical parameters and carries Active product status. The S1JH is qualified to AEC-Q101 automotive standard and is available in Tape & Reel packaging with 14,686 units in stock. This part is suitable for new designs and provides the highest compatibility assurance.

S1J (YAGEO) is an alternative parametric equivalent with Active product status. This part matches the voltage and current ratings and forward voltage specification. Packaging is available in Cut Tape and Digi-Reel configurations with 5,851 units in stock.

Secondary Substitutes (Similar Parts with Parameter Variations)

S1J R3G (Taiwan Semiconductor Corporation) is a parametric equivalent but carries Discontinued at DiGi Electronics status. This part exhibits identical electrical performance to the S1JR3 but should not be selected for new designs due to discontinuation status. Existing inventory of 8,941 units may support legacy system maintenance only.

MRA4005T1G and MRA4005T3G (onsemi) are parametric equivalents with Not For New Designs status. Both parts maintain 600 V reverse voltage and 1 A current ratings with 1.1 V forward voltage. However, reverse leakage current is specified at 10 µA compared to 1 µA for the S1JR3, and reverse recovery time is not specified. These parts carry large inventory (820,300 and 820,400 units respectively) but are not recommended for new circuit designs.

Alternative with Performance Differences

ES1J (HY Electronic) is classified as a similar part with notable performance variations. Forward voltage is elevated to 1.7 V @ 1 A (compared to 1.1 V), and reverse recovery time is significantly faster at 35 ns (compared to 1.5 µs). Reverse leakage current is 5 µA @ 600 V. This part is AEC-Q101 qualified and carries 175,400 units in stock. Selection of ES1J requires circuit analysis to confirm compatibility with the elevated forward voltage drop.

GF1J (onsemi) carries Not For New Designs status and is not recommended for new applications. Forward voltage is lower at 1.0 V @ 1 A, and reverse recovery time is 2 µs. Reverse leakage current is 5 µA @ 600 V.

Frequently Asked Questions (FAQ)

Q: Can S1JR3 be replaced with S1JH in existing designs?

A: Yes. S1JH is a parametric equivalent with identical electrical specifications: 600 V reverse voltage, 1 A average rectified current, 1.1 V forward voltage @ 1 A, 1.5 µs reverse recovery time, and 1 µA reverse leakage current @ 600 V. Both parts use DO-214AC (SMA) surface mount packaging. S1JH is Active product status and AEC-Q101 qualified, making it suitable for both legacy and new designs.

Q: What is the difference between S1J R3G and S1JR3?

A: S1J R3G is a parametric equivalent to S1JR3 with identical electrical specifications. The primary difference is product status: S1J R3G is Discontinued at DiGi Electronics, while S1JR3 is Active. Both parts share the same base product number (S1J) and Taiwan Semiconductor Corporation manufacturer. S1J R3G should be used only for maintenance of existing systems where supply is available.

Q: Can ES1J be used as a direct replacement for S1JR3?

A: ES1J is functionally compatible but exhibits performance differences that require circuit evaluation. Forward voltage is 1.7 V @ 1 A compared to 1.1 V for S1JR3, representing a 0.6 V increase. Reverse recovery time is significantly faster at 35 ns. Reverse leakage current is 5 µA compared to 1 µA. These differences may affect circuit performance in voltage-sensitive or high-frequency applications. Circuit analysis is required before substitution.

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

A: MRA4005T1G and MRA4005T3G carry Not For New Designs status from onsemi, indicating these parts are in end-of-life phase. While they maintain parametric equivalence to S1JR3 in voltage and current ratings, they should not be selected for new circuit designs. These parts are available for legacy system support only.

Q: What packaging options are available for S1JR3 substitutes?

A: All substitute parts use surface mount DO-214AC (SMA) package form factor, matching the S1JR3 package specification. Packaging configurations vary by supplier: S1JR3 is supplied in standard packaging, S1J is available in Cut Tape (CT) and Digi-Reel, S1JH is supplied in Tape & Reel (TR), and MRA4005T1G/T3G are available in Tape & Reel. Package compatibility is maintained across all substitutes.

Q: Are all substitute parts RoHS3 compliant?

A: Most substitute parts are RoHS3 compliant: S1JR3, S1J, S1J R3G, S1JH, GF1J, MRA4005T1G, and MRA4005T3G. ES1J is RoHS Compliant but not specifically RoHS3 certified. All parts carry MSL 1 (Unlimited) moisture sensitivity level. Compliance documentation should be verified for specific procurement requirements.

Q: What is the operating temperature range for S1JR3 substitutes?

A: S1JR3 operates from -55°C to 175°C junction temperature. All parametric equivalents (S1J, S1J R3G, S1JH, MRA4005T1G, MRA4005T3G) maintain this temperature range. ES1J operates from -55°C to 150°C, providing a 25°C reduction in maximum junction temperature. GF1J extends to -65°C minimum temperature. Temperature range compatibility should be confirmed for applications operating at temperature extremes.

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