SA2D-M3/5AT Equivalent & Substitute Parts

Part Overview

The SA2D-M3/5AT is a general-purpose rectifier diode manufactured by Vishay General Semiconductor - Diodes Division. This surface mount component operates at 200 V DC reverse voltage with 2 A average rectified current in a DO-214AC (SMA) package. The part is currently active and in production with 1034 units in stock.

Equivalent and substitute parts are identified when design requirements necessitate alternative sourcing due to supply constraints, inventory availability, or specific performance characteristics within the same functional category. Substitute parts maintain electrical compatibility through matching or superior performance parameters while preserving mechanical compatibility through identical or compatible packaging.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	200	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 @ 200 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

Substitute parts for the SA2D-M3/5AT are classified into two categories based on electrical parameter compatibility:

Parametric Equivalents (Direct Substitutes): Parts that match all critical electrical parameters including 200 V reverse voltage, 2 A average rectified current, 1.1 V forward voltage at 2 A, and 1.5 µs reverse recovery time. These parts maintain identical functional performance and are interchangeable without circuit modification.

Current-Reduced Alternatives (1 A Rating): Parts rated for 1 A average rectified current instead of 2 A. These parts are suitable for applications where the circuit current requirement does not exceed 1 A. They maintain the 200 V reverse voltage rating and DO-214AC package compatibility but operate at reduced current capacity.

Key Parameters Determining Substitution:

Voltage - DC Reverse (Vr) (Max): Must equal or exceed 200 V
Current - Average Rectified (Io): Must equal or exceed circuit requirement
Package / Case: Must be DO-214AC (SMA) for mechanical compatibility
Mounting Type: Must be Surface Mount
Operating Temperature Range: Must accommodate application requirements

Parameter Comparison

Part Number	Manufacturer	Vr (Max) [V]	Io [A]	Vf (Max) @ If [V]	trr [µs/ns]	Ir @ Vr [µA]	Package	Status	Inventory [Pcs]
SA2D-M3/5AT	Vishay	200	2	1.1 @ 2A	1.5 µs	3 @ 200V	DO-214AC	Active	1034
SA2D-E3/5AT	Vishay	200	2	1.1 @ 2A	1.5 µs	3 @ 200V	DO-214AC	Active	2340
SA2D-E3/61T	Vishay	200	2	1.1 @ 2A	1.5 µs	3 @ 200V	DO-214AC	Active	30300
ES2D-LTP	Micro Commercial Co	200	2	0.95 @ 2A	35 ns	5 @ 200V	DO-214AC	Active	75300
ES2DA-13-F	Diodes Incorporated	200	2	0.92 @ 2A	25 ns	5 @ 200V	DO-214AC	Active	56754
CSFA103-G	Comchip Technology	200	1	0.95 @ 1A	35 ns	5 @ 200V	DO-214AC	Active	19914
CURA103-G	Comchip Technology	200	1	1.0 @ 1A	50 ns	5 @ 200V	DO-214AC	Active	28880
EGF1D	onsemi	200	1	1.0 @ 1A	50 ns	10 @ 200V	DO-214AC	Not For New Designs	300300
ES1D	EVVO Semi	200	1	1.0 @ 1A	35 ns	5 @ 200V	DO-214AC	Active	140400
ES1D-13-F	Diodes Incorporated	200	1	0.92 @ 1A	25 ns	5 @ 200V	DO-214AC	Active	550400
ES1D-LTP	Micro Commercial Co	200	1	0.95 @ 1A	35 ns	5 @ 200V	DO-214AC	Active	335300

Engineering Selection Recommendations

Direct Parametric Equivalents (2 A Rating):

The SA2D-E3/5AT and SA2D-E3/61T from Vishay are direct parametric equivalents to the SA2D-M3/5AT. Both parts maintain identical electrical specifications across all critical parameters. The SA2D-E3/61T offers significantly higher inventory availability (30,300 units) compared to the main part (1,034 units), making it the preferred choice for high-volume applications requiring immediate supply assurance.

2 A Alternatives with Enhanced Performance:

ES2D-LTP (Micro Commercial Co) and ES2DA-13-F (Diodes Incorporated) are 2 A rated alternatives that provide faster reverse recovery characteristics (35 ns and 25 ns respectively versus 1.5 µs for the main part). These parts are suitable for applications where reduced switching losses and improved efficiency are beneficial. Both parts maintain ROHS3 compliance and MSL 1 rating. ES2DA-13-F offers the fastest recovery time (25 ns) and highest inventory (56,754 units).

1 A Alternatives (Current-Reduced Applications):

For applications where circuit current does not exceed 1 A, the following parts are suitable substitutes:

ES1D-13-F (Diodes Incorporated): Highest inventory availability (550,400 units), fastest reverse recovery time (25 ns), lowest forward voltage (0.92 V @ 1 A), ROHS3 compliant, active product status.
ES1D-LTP (Micro Commercial Co): Extended operating temperature range (-65°C to 175°C), 335,300 units in stock, ROHS3 compliant, active status.
ES1D (EVVO Semi): 140,400 units available, 35 ns recovery time, active status.
CSFA103-G (Comchip Technology): 19,914 units in stock, 35 ns recovery time, active status.
CURA103-G (Comchip Technology): 28,880 units available, 50 ns recovery time, active status.

Parts to Avoid for New Designs:

EGF1D (onsemi) carries a "Not For New Designs" status despite high inventory (300,300 units). This designation indicates the manufacturer has discontinued active development and support for this part. New designs should not incorporate this component.

Frequently Asked Questions (FAQ)

Q: Can I use a 1 A rated diode in place of the SA2D-M3/5AT which is rated for 2 A?

A: A 1 A rated diode can be used only if your circuit current requirement does not exceed 1 A. The 1 A rating represents the maximum average rectified current the diode can safely conduct. Using a 1 A diode in a 2 A application will cause excessive heat generation and premature failure. Verify your actual circuit current requirement before selecting a 1 A alternative.

Q: What is the difference between the SA2D-M3/5AT, SA2D-E3/5AT, and SA2D-E3/61T?

A: All three parts are Vishay products with identical electrical specifications. The differences are in packaging configuration (indicated by the suffix) and inventory availability. SA2D-E3/61T has the highest stock level (30,300 units) and is the recommended choice for supply continuity.

Q: Are the faster recovery time alternatives (ES2DA-13-F with 25 ns) direct replacements?

A: Yes, ES2DA-13-F is a direct replacement for the SA2D-M3/5AT in terms of voltage rating, current rating, and package. The faster recovery time (25 ns versus 1.5 µs) is a performance enhancement that reduces switching losses. This part is suitable for all applications where the original part was used and offers improved efficiency characteristics.

Q: Why do some substitute parts have different forward voltage specifications?

A: Forward voltage variation is a normal characteristic across different manufacturers and process technologies. The SA2D-M3/5AT specifies 1.1 V maximum at 2 A, while alternatives range from 0.92 V to 1.0 V. These variations are within acceptable engineering tolerances for general-purpose rectifier applications. Lower forward voltage indicates slightly better efficiency but does not affect functional compatibility.

Q: Can I use ES2D-LTP which has a lower forward voltage (0.95 V @ 2 A) instead of the original part?

A: Yes. ES2D-LTP is a direct 2 A rated substitute with identical voltage rating and package. The lower forward voltage (0.95 V versus 1.1 V) represents improved performance with reduced power dissipation. This part is fully compatible and offers enhanced efficiency.

Q: What does "Not For New Designs" mean for the EGF1D part?

A: "Not For New Designs" is a manufacturer status designation indicating that onsemi has discontinued active development and support for this component. While existing inventory may be available, the manufacturer does not recommend incorporating this part into new product designs. New designs should select from parts with "Active" status.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All substitute parts listed carry ROHS3 compliance certification, matching the environmental compliance of the SA2D-M3/5AT. All parts also maintain MSL 1 (Unlimited) moisture sensitivity rating.

Q: What is the significance of the packaging suffix (5AT versus 61T)?

A: The suffix indicates the tape and reel configuration for automated assembly. Both SA2D-E3/5AT and SA2D-E3/61T are functionally identical; the suffix reflects different packaging formats for manufacturing. Selection between these variants depends on your assembly equipment compatibility, not electrical performance.

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