SA2M-M3/61T Equivalent & Substitute Parts

Part Overview

The SA2M-M3/61T is a general-purpose rectifier diode manufactured by Vishay General Semiconductor - Diodes Division. This surface mount diode is rated for 1000 V DC reverse voltage and 2 A average rectified current in a DO-214AC (SMA) package. The part is currently active and in production with 31,058 units in stock.

Substitute parts are necessary when the primary part becomes unavailable, when alternative sourcing is required for supply chain resilience, or when design flexibility permits selection from multiple qualified manufacturers. Equivalent parts maintain identical electrical and mechanical specifications, while alternative parts may have reduced current ratings or different recovery characteristics but remain functionally compatible within specific application constraints.

Key Parameters

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

Substitute Part Grouping Explanation

Substitution of the SA2M-M3/61T is determined by the following critical parameters:

Primary Substitution Criteria:

Voltage - DC Reverse (Vr) Maximum: Must equal or exceed 1000 V
Current - Average Rectified (Io): Must equal or exceed 2 A
Package / Case: Must be DO-214AC (SMA) surface mount
Mounting Type: Must be surface mount compatible with same footprint
Operating Temperature Range: Must accommodate -55°C to 150°C minimum
RoHS and MSL Compliance: Must maintain ROHS3 compliance and MSL 1 rating

Full Parametric Equivalents maintain all electrical characteristics including forward voltage, reverse recovery time, and reverse leakage current specifications. These parts are direct replacements with no circuit redesign required.

Current-Reduced Alternatives (1 A rated) are listed for reference but require circuit evaluation. These parts maintain 1000 V reverse voltage rating and DO-214AC packaging but are rated for 1 A instead of 2 A average rectified current. Use of these parts is restricted to applications where the actual circuit current demand does not exceed 1 A.

Voltage-Reduced Alternatives (800 V rated) are listed for reference but require circuit evaluation. These parts maintain 1 A or higher current ratings and DO-214AC packaging but are rated for 800 V instead of 1000 V reverse voltage. Use of these parts is restricted to applications where the actual reverse voltage stress does not exceed 800 V.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Vr (Max) V	Io A	Vf (Max) @ If	trr µs	Ir @ Vr µA	Package	Status	Inventory Pcs
SA2M-M3/61T	Vishay	1000	2	1.1 @ 2A	1.5	3 @ 1000V	DO-214AC	Active	31,058
SA2M-E3/5AT	Vishay	1000	2	1.1 @ 2A	1.5	3 @ 1000V	DO-214AC	Active	15,625
SA2M-E3/61T	Vishay	1000	2	1.1 @ 2A	1.5	3 @ 1000V	DO-214AC	Active	21,500
CGRA4007-G	Comchip Technology	1000	1	1.1 @ 1A	—	5 @ 1000V	DO-214AC	Active	52,200
CURA107-G	Comchip Technology	1000	1	1.7 @ 1A	0.075	5 @ 1000V	DO-214AC	Active	13,182
GF1M	onsemi	1000	1	1.2 @ 1A	2	5 @ 1000V	DO-214AC	Not For New Designs	63,580
GS1K-LTP	Micro Commercial Co	800	1	1 @ 1A	—	10 @ 800V	DO-214AC	Active	8,458
GS1M-LTP	Micro Commercial Co	1000	1	1 @ 1A	—	10 @ 1000V	DO-214AC	Active	88,005
MRA4006T3G	onsemi	800	1	1.1 @ 1A	—	10 @ 800V	DO-214AC	Not For New Designs	45,300
MRA4007T3G	onsemi	1000	1	1.1 @ 1A	—	10 @ 1000V	DO-214AC	Not For New Designs	425,100
NRVA4006T3G	onsemi	800	1	1.1 @ 1A	—	10 @ 800V	DO-214AC	Not For New Designs	50,200

Engineering Selection Recommendations

Full Parametric Equivalents (Direct Replacement):

The SA2M-E3/5AT and SA2M-E3/61T are full parametric equivalents manufactured by Vishay. Both parts maintain identical electrical specifications: 1000 V reverse voltage, 2 A average rectified current, 1.1 V forward voltage at 2 A, 1.5 µs reverse recovery time, and 3 µA reverse leakage current at 1000 V. Both are ROHS3 compliant with MSL 1 rating and active product status. These parts are suitable for direct substitution without circuit modification.

Current-Reduced Alternatives (1 A Rated, 1000 V):

The CGRA4007-G, CURA107-G, GF1M, and MRA4007T3G are rated for 1000 V reverse voltage but limited to 1 A average rectified current. These parts are suitable only for applications where actual circuit current does not exceed 1 A. CGRA4007-G and MRA4007T3G maintain standard recovery characteristics (>500 ns). CURA107-G is an ultrafast diode with 75 ns reverse recovery time and higher forward voltage (1.7 V @ 1 A), suitable for high-frequency switching applications. GF1M carries "Not For New Designs" status and should be avoided for new circuit development. GS1M-LTP is also 1 A rated at 1000 V with lower forward voltage (1 V @ 1 A) and active product status.

Voltage-Reduced Alternatives (800 V Rated, 1 A):

The GS1K-LTP and MRA4006T3G are rated for 800 V reverse voltage and 1 A average rectified current. These parts are suitable only for applications where actual reverse voltage stress does not exceed 800 V. GS1K-LTP is active with low forward voltage (1 V @ 1 A). MRA4006T3G carries "Not For New Designs" status. NRVA4006T3G is an automotive-qualified part (AEC-Q101) rated for 800 V and 1 A with "Not For New Designs" status.

Compliance and Status Considerations:

All listed parts maintain ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating. Parts marked "Not For New Designs" (GF1M, MRA4006T3G, MRA4007T3G, NRVA4006T3G) are suitable for legacy system support and repair but should not be selected for new circuit development. Active status parts (Vishay SA2M series, Comchip CGRA4007-G and CURA107-G, Micro Commercial GS1K-LTP and GS1M-LTP) are recommended for new designs.

Frequently Asked Questions (FAQ)

Q: Can I use a 1 A rated diode in place of the SA2M-M3/61T in my circuit?

A: Only if your circuit's actual average rectified current does not exceed 1 A. The SA2M-M3/61T is rated for 2 A. Using a 1 A part in a 2 A application will cause excessive junction temperature rise and premature device failure. Verify your circuit's actual current demand before selecting a current-reduced alternative.

Q: What is the difference between SA2M-M3/61T, SA2M-E3/5AT, and SA2M-E3/61T?

A: All three are Vishay SA2 series diodes with identical electrical specifications: 1000 V, 2 A, 1.1 V forward voltage, 1.5 µs recovery time, and 3 µA leakage. The differences are in tape reel specifications (61T versus 5AT designations) and inventory levels. Electrically, they are interchangeable.

Q: Can I use an 800 V diode where a 1000 V diode is specified?

A: Only if your circuit's actual reverse voltage stress does not exceed 800 V. The SA2M-M3/61T is rated for 1000 V reverse voltage. Using an 800 V part in a 1000 V application will cause device breakdown. Verify your circuit's actual reverse voltage before selecting a voltage-reduced alternative.

Q: What does "Not For New Designs" status mean?

A: Parts marked "Not For New Designs" are legacy or obsolete products. While they may still be available in inventory, manufacturers no longer recommend them for new circuit development. These parts are suitable for repair and maintenance of existing systems but should not be selected for new projects. Use active status parts for new designs.

Q: Is the CURA107-G a direct replacement for the SA2M-M3/61T?

A: No. The CURA107-G is an ultrafast diode with 75 ns reverse recovery time, compared to the SA2M-M3/61T's 1.5 µs standard recovery. Additionally, CURA107-G is rated for only 1 A instead of 2 A. The higher forward voltage (1.7 V @ 1 A versus 1.1 V @ 2 A) also differs. CURA107-G is suitable only for high-frequency switching applications with 1 A or lower current demand.

Q: Do all substitute parts use the same DO-214AC package?

A: Yes. All listed substitute parts use the DO-214AC (SMA) surface mount package, ensuring mechanical and footprint compatibility with the SA2M-M3/61T. However, verify your PCB assembly equipment and reflow profile compatibility with the specific manufacturer's package specifications.

Q: What is the difference between reverse recovery time specifications?

A: Reverse recovery time (trr) is the time required for a diode to stop conducting in the reverse direction after the forward current is removed. The SA2M-M3/61T has 1.5 µs recovery time (standard recovery). CURA107-G has 75 ns (ultrafast recovery). Faster recovery reduces switching losses in high-frequency applications but is unnecessary in low-frequency rectification circuits. Standard recovery parts are suitable for 50/60 Hz line rectification and general-purpose applications.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts are ROHS3 compliant and carry MSL 1 (Unlimited) moisture sensitivity rating, matching the SA2M-M3/61T compliance profile.

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