S1J-M3/5AT Equivalent & Substitute Parts

Part Overview

The S1J-M3/5AT is a general-purpose rectifier diode manufactured by Vishay General Semiconductor - Diodes Division. This surface mount diode operates at 600 V DC reverse voltage with 1 A average rectified current in a DO-214AC (SMA) package. The part 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 and mechanical compatibility. Alternative part numbers may be required due to supply chain availability, packaging format preferences, or specific application certifications such as automotive qualification.

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)	1.8	µs
Current - Reverse Leakage @ Vr	1	µA @ 600 V
Capacitance @ Vr, F	12	pF @ 4V, 1MHz
Operating Temperature - Junction	-55 to 150	°C
Package / Case	DO-214AC, SMA	—
Mounting Type	Surface Mount	—
Technology	Standard	—

Substitute Part Grouping Explanation

Substitute parts for the S1J-M3/5AT are grouped into two categories based on electrical and mechanical compatibility:

Parametric Equivalents share identical electrical specifications: 600 V reverse voltage, 1 A average rectified current, 1.1 V forward voltage drop at 1 A, 1.8 µs reverse recovery time, and DO-214AC (SMA) surface mount package. These parts are direct functional replacements with no performance trade-offs.

Manufacturer Recommended Alternatives meet the same voltage and current ratings but may differ in secondary parameters such as forward voltage, reverse recovery time, reverse leakage current, or capacitance. These parts are suitable for applications where the primary electrical requirements (600 V, 1 A) are the controlling factors.

Substitution eligibility is determined by:

Voltage - DC Reverse (Vr) (Max): 600 V minimum
Current - Average Rectified (Io): 1 A minimum
Package / Case: DO-214AC or SMA compatible
Mounting Type: Surface Mount
Operating Temperature Range: -55°C to 150°C minimum

Parameter Comparison

Part Number	Manufacturer	Vr (Max) [V]	Io [A]	Vf (Max) @ 1A [V]	trr [µs]	Ir @ 600V [µA]	Packaging	Product Status	Grade
S1J-M3/5AT	Vishay	600	1	1.1	1.8	1	Tape & Reel	Active	Standard
S1J-E3/5AT	Vishay	600	1	1.1	1.8	1	Cut Tape & Digi-Reel	Active	Standard
S1J-E3/61T	Vishay	600	1	1.1	1.8	1	Cut Tape & Digi-Reel	Active	Standard
S1JHE3_A/H	Vishay	600	1	1.1	1.8	1	Tape & Reel	Active	Automotive
S1JHE3_A/I	Vishay	600	1	1.1	1.8	1	Cut Tape & Digi-Reel	Active	Automotive
ES1J	HY Electronic	600	1	1.7	0.035	5	—	Active	Automotive
ES1J-LTP	Micro Commercial Co	600	1	1.7	0.035	5	Cut Tape & Digi-Reel	Active	Standard
GF1J	onsemi	600	1	1.0	2.0	5	Tape & Reel	Not For New Designs	Standard
GS1J-LTP	Micro Commercial Co	600	1	1.0	—	10	Tape & Reel	Active	Standard
MRA4005T1G	onsemi	600	1	1.1	—	10	Tape & Reel	Not For New Designs	Standard
MRA4005T3G	onsemi	600	1	1.1	—	10	Cut Tape & Digi-Reel	Not For New Designs	Standard

Engineering Selection Recommendations

For Active Product Status Applications:

Parts with Active product status are suitable for new designs and ongoing production. Within the Vishay family, S1J-E3/5AT and S1J-E3/61T provide identical electrical performance to the S1J-M3/5AT with alternative packaging formats (Cut Tape & Digi-Reel instead of Tape & Reel). These are direct parametric equivalents.

S1JHE3_A/H and S1JHE3_A/I are automotive-grade variants (AEC-Q101 qualified) with identical electrical specifications. These are suitable for applications requiring automotive qualification.

ES1J-LTP (Micro Commercial Co) and ES1J (HY Electronic) are Active status alternatives with faster recovery characteristics (35 ns versus 1.8 µs) and higher forward voltage (1.7 V versus 1.1 V). These represent functional alternatives where fast recovery performance is beneficial.

GS1J-LTP is an Active status alternative with standard recovery speed and lower forward voltage (1.0 V).

For Legacy or Constrained Applications:

GF1J and MRA4005T1G/MRA4005T3G carry "Not For New Designs" status. These parts remain available but should not be selected for new product development. Existing designs using these parts may continue to source them for production continuity.

Compliance Considerations:

All listed parts are ROHS3 compliant with MSL 1 (Unlimited). The S1J-M3/5AT, S1J-E3/5AT, S1J-E3/61T, S1JHE3_A/H, S1JHE3_A/I, ES1J-LTP, GF1J, GS1J-LTP, MRA4005T1G, and MRA4005T3G are REACH Unaffected. ES1J is REACH Affected. Component selection should account for supply chain and regulatory requirements specific to the end application.

Frequently Asked Questions (FAQ)

Q: Can S1J-E3/5AT be used as a direct replacement for S1J-M3/5AT?

A: Yes. S1J-E3/5AT is a parametric equivalent with identical electrical specifications (600 V, 1 A, 1.1 V forward voltage, 1.8 µs recovery time). The difference is packaging format: S1J-M3/5AT is supplied in Tape & Reel, while S1J-E3/5AT is supplied in Cut Tape & Digi-Reel. Both are surface mount DO-214AC (SMA) packages suitable for the same PCB assembly processes.

Q: What is the difference between standard Vishay S1J parts and automotive-grade S1JHE3_A variants?

A: The S1JHE3_A/H and S1JHE3_A/I variants are AEC-Q101 qualified for automotive applications. Electrical performance is identical to standard S1J parts. The automotive qualification indicates compliance with automotive reliability and testing standards. Use automotive-grade variants when the application requires AEC-Q101 certification.

Q: Why do ES1J-LTP and ES1J show different forward voltage and recovery time than the S1J-M3/5AT?

A: ES1J parts use fast recovery technology with 35 ns reverse recovery time compared to 1.8 µs for standard S1J parts. This results in higher forward voltage (1.7 V versus 1.1 V) and faster switching characteristics. These parts are suitable for applications where fast recovery performance is required, but the higher forward voltage drop must be evaluated for thermal and efficiency impacts.

Q: Are GF1J and MRA4005 series parts suitable for new designs?

A: No. Both GF1J and MRA4005T1G/MRA4005T3G carry "Not For New Designs" product status. These parts are available for production support of existing designs but should not be selected for new product development. Use Active status alternatives such as S1J-E3/5AT, S1JHE3_A/H, or ES1J-LTP for new designs.

Q: What packaging options are available for 600 V, 1 A rectifier diodes in this family?

A: All listed parts use DO-214AC (SMA) surface mount package. Packaging format variations include Tape & Reel (TR), Cut Tape (CT) & Digi-Reel, and unspecified formats. The physical package remains identical; only the supply format differs. Select based on assembly equipment compatibility and supply chain requirements.

Q: Can I substitute a part with higher reverse leakage current?

A: Reverse leakage current ranges from 1 µA (S1J-M3/5AT) to 10 µA (GS1J-LTP, MRA4005 series). Higher leakage current increases power dissipation and may affect circuit performance in high-impedance applications. Substitution with higher leakage is acceptable only if circuit design tolerates the increased leakage and associated power loss.

Q: What is the significance of the -55°C to 150°C operating temperature range?

A: This is the junction temperature operating range. The S1J-M3/5AT operates from -55°C to 150°C. Some alternatives (ES1J-LTP, GF1J, MRA4005 series) extend to 175°C. Verify that the selected part's temperature range meets the application's thermal requirements, including worst-case ambient temperature, PCB thermal design, and power dissipation.

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