SA2J-M3/5AT Equivalent & Substitute Parts

Part Overview

The SA2J-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 a 2 A average rectified current rating 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 or exceeding the electrical and mechanical specifications of the SA2J-M3/5AT. Substitutes are necessary when the primary part is unavailable, when alternative sourcing is required, or when design flexibility permits selection from multiple qualified manufacturers.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	600	V
Current - Average Rectified (Io)	2	A
Voltage - Forward (Vf) (Max) @ If	1.1 V @ 2 A	V
Reverse Recovery Time (trr)	1.5	µs
Current - Reverse Leakage @ Vr	3 µA @ 1000 V	µA
Capacitance @ Vr, F	11	pF @ 4V, 1MHz
Mounting Type	Surface Mount	-
Package / Case	DO-214AC, SMA	-
Operating Temperature - Junction	-55 to 150	°C
RoHS Status	ROHS3 Compliant	-
Moisture Sensitivity Level (MSL)	1 (Unlimited)	-

Substitute Part Grouping Explanation

Substitute parts for the SA2J-M3/5AT are classified into two categories based on electrical performance and current rating:

Category 1: Parametric Equivalents (2A Current Rating)

Parametric equivalent parts maintain the same 2 A average rectified current rating and 600 V reverse voltage specification as the main part. These parts are direct functional replacements with identical electrical performance characteristics. The key parameters determining substitution within this category are:

Voltage - DC Reverse (Vr) (Max): 600 V
Current - Average Rectified (Io): 2 A
Voltage - Forward (Vf) (Max) @ If: 1.1 V @ 2 A
Reverse Recovery Time (trr): 1.5 µs
Package / Case: DO-214AC, SMA
Mounting Type: Surface Mount

Category 2: Manufacturer Recommended Alternatives (1A Current Rating)

Manufacturer recommended alternatives operate at reduced current ratings (1 A average rectified current) while maintaining the 600 V reverse voltage specification. These parts are suitable for applications where the 2 A current requirement is not mandatory. The key parameters determining substitution within this category are:

Voltage - DC Reverse (Vr) (Max): 600 V
Current - Average Rectified (Io): 1 A
Package / Case: DO-214AC, SMA
Mounting Type: Surface Mount

Parameter Comparison

Manufacturer Part Number	Manufacturer	Vr (Max) [V]	Io [A]	Vf (Max) @ If [V]	trr [µs/ns]	Package	Tj Range [°C]	Product Status	RoHS Status
SA2J-M3/5AT	Vishay General Semiconductor	600	2	1.1 @ 2 A	1.5 µs	DO-214AC, SMA	-55 to 150	Active	ROHS3
SA2J-E3/5AT	Vishay General Semiconductor	600	2	1.1 @ 2 A	1.5 µs	DO-214AC, SMA	-55 to 150	Active	ROHS3
SA2J-E3/61T	Vishay General Semiconductor	600	2	1.1 @ 2 A	1.5 µs	DO-214AC, SMA	-55 to 150	Active	ROHS3
CSFA105-G	Comchip Technology	600	1	1.5 @ 1 A	35 ns	DO-214AC, SMA	-55 to 150	Active	ROHS3
ES1J	HY Electronic (Cayman) Limited	600	1	1.7 @ 1 A	35 ns	DO-214AC, SMA	-55 to 150	Active	RoHS
ES1J-LTP	Micro Commercial Co	600	1	1.7 @ 1 A	35 ns	DO-214AC, SMA	-65 to 175	Active	ROHS3
ES2J-LTP	Micro Commercial Co	600	2	1.7 @ 2 A	35 ns	DO-214AC, SMA	-65 to 175	Active	ROHS3
GF1J	onsemi	600	1	1.0 @ 1 A	2 µs	DO-214AC, SMA	-65 to 175	Not For New Designs	ROHS3
GS1J-LTP	Micro Commercial Co	600	1	1.0 @ 1 A	>500 ns	DO-214AC, SMA	-55 to 150	Active	ROHS3
MRA4005T1G	onsemi	600	1	1.1 @ 1 A	>500 ns	DO-214AC, SMA	-55 to 175	Not For New Designs	ROHS3
MRA4005T3G	onsemi	600	1	1.1 @ 1 A	>500 ns	DO-214AC, SMA	-55 to 175	Not For New Designs	ROHS3

Engineering Selection Recommendations

Direct Parametric Equivalents (Recommended for 2A Applications)

The SA2J-E3/5AT and SA2J-E3/61T are parametric equivalents of the SA2J-M3/5AT. Both parts are manufactured by Vishay General Semiconductor and maintain identical electrical specifications including 600 V reverse voltage, 2 A average rectified current, 1.1 V forward voltage at 2 A, and 1.5 µs reverse recovery time. All three parts are Active product status and ROHS3 compliant. The SA2J-E3/61T offers significantly higher inventory availability (30,100 pieces) compared to the main part (913 pieces), making it the preferred choice for high-volume applications.

Fast Recovery Alternatives (2A Current Rating)

The ES2J-LTP manufactured by Micro Commercial Co provides 2 A current rating with improved fast recovery characteristics (35 ns reverse recovery time versus 1.5 µs). This part operates across an extended temperature range (-65°C to 175°C) and is ROHS3 compliant. The ES2J-LTP is suitable for applications requiring faster switching performance while maintaining the 2 A current specification.

Reduced Current Alternatives (1A Current Rating)

For applications where 1 A current rating is sufficient, multiple alternatives are available:

ES1J-LTP (Micro Commercial Co): Fast recovery (35 ns), extended temperature range (-65°C to 175°C), ROHS3 compliant, high inventory (55,300 pieces)
CSFA105-G (Comchip Technology): Fast recovery (35 ns), standard temperature range (-55°C to 150°C), ROHS3 compliant
GS1J-LTP (Micro Commercial Co): Standard recovery (>500 ns), standard temperature range (-55°C to 150°C), ROHS3 compliant, lowest forward voltage (1.0 V @ 1 A)
MRA4005T1G and MRA4005T3G (onsemi): Standard recovery (>500 ns), extended temperature range (-55°C to 175°C), ROHS3 compliant, Not For New Designs status

Obsolescence Considerations

Parts designated as "Not For New Designs" (GF1J, MRA4005T1G, MRA4005T3G) are suitable for replacement applications and legacy system support but should not be selected for new product development. Active status parts are recommended for all new designs.

Frequently Asked Questions (FAQ)

Q: Can SA2J-E3/5AT and SA2J-E3/61T be used interchangeably with SA2J-M3/5AT?

A: Yes. Both parts are parametric equivalents with identical electrical specifications (600 V, 2 A, 1.1 V forward voltage, 1.5 µs recovery time) and the same DO-214AC package. The difference between SA2J-E3/5AT and SA2J-E3/61T is packaging format (Tape & Reel designation), not electrical performance.

Q: What is the difference between standard recovery and fast recovery diodes in this product line?

A: Standard recovery diodes (SA2J series, GF1J, MRA4005 series) have reverse recovery times of 1.5 µs to 2 µs. Fast recovery diodes (ES1J-LTP, ES2J-LTP, CSFA105-G) have reverse recovery times of 35 ns. Fast recovery diodes switch more quickly and generate less switching noise, making them suitable for high-frequency applications. Standard recovery diodes are adequate for lower-frequency rectification applications.

Q: Can 1A-rated diodes replace the 2A-rated SA2J-M3/5AT?

A: 1A-rated diodes can replace the SA2J-M3/5AT only if the application circuit does not require current exceeding 1 A. The 600 V reverse voltage specification is maintained across all alternatives. Circuit analysis must confirm that peak and average current demands do not exceed 1 A before substitution.

Q: What is the significance of the temperature range difference between parts?

A: The SA2J-M3/5AT operates from -55°C to 150°C junction temperature. Some alternatives (ES1J-LTP, ES2J-LTP, MRA4005 series) extend to -65°C or 175°C. Extended temperature range parts are suitable for applications requiring operation outside the standard range. Standard range parts are adequate for typical industrial and consumer applications.

Q: Are all substitute parts RoHS3 compliant?

A: Most substitute parts are ROHS3 compliant. The ES1J part is listed as RoHS Compliant (not specifically ROHS3). For applications requiring strict ROHS3 compliance, verify the specific part designation. All Vishay SA2J variants, ES1J-LTP, ES2J-LTP, CSFA105-G, GS1J-LTP, and MRA4005 series are ROHS3 compliant.

Q: What packaging formats are available for these diodes?

A: All parts listed use the DO-214AC (SMA) surface mount package. Packaging format variations include Tape & Reel (TR), Cut Tape (CT) & Digi-Reel®, and unspecified formats. These variations affect handling and assembly processes but do not change electrical performance or physical package dimensions.

Q: Which substitute offers the best inventory availability?

A: The SA2J-E3/61T offers the highest inventory (30,100 pieces) among 2A-rated alternatives. For 1A-rated parts, ES1J-LTP provides 55,300 pieces. MRA4005T1G and MRA4005T3G each have 820,000+ pieces available but are designated Not For New Designs.

Q: Is forward voltage difference significant when selecting a substitute?

A: Forward voltage differences range from 1.0 V to 1.7 V across the substitute parts. In rectification circuits, this affects power dissipation and heat generation. Applications with tight thermal budgets or high-current continuous operation should account for forward voltage differences. For low-current or intermittent applications, forward voltage variation is typically not critical.

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