S3M-M3/57T Equivalent & Substitute Parts

Part Overview

The S3M-M3/57T is a general-purpose rectifier diode manufactured by Vishay General Semiconductor - Diodes Division. This surface mount diode operates at 1000 V DC reverse voltage with a 3 A average rectified current rating and is packaged in the DO-214AB (SMC) form factor. The device is classified as Active product status and is ROHS3 compliant with unlimited moisture sensitivity level (MSL 1).

Substitute parts are necessary when the original packaging format (Tape & Reel) is unavailable, when alternative sourcing is required due to inventory constraints, or when automotive-grade qualification is mandated for specific applications.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	1000	V
Current - Average Rectified (Io)	3	A
Voltage - Forward (Vf) (Max) @ If	1.15 V @ 2.5 A	V
Reverse Recovery Time (trr)	2.5	µs
Current - Reverse Leakage @ Vr	10	µA @ 1000 V
Capacitance @ Vr, F	60	pF @ 4V, 1MHz
Operating Temperature - Junction	-55 to 150	°C
Package / Case	DO-214AB, SMC	—
Mounting Type	Surface Mount	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution of the S3M-M3/57T is determined by electrical and mechanical parameter equivalence within the general-purpose rectifier diode category. The critical parameters that define substitutability are:

Voltage - DC Reverse (Vr) (Max): 1000 V
Current - Average Rectified (Io): 3 A
Package / Case: DO-214AB, SMC
Mounting Type: Surface Mount
Operating Temperature Range: -55°C to 150°C
Technology: Standard Recovery

All substitute parts listed maintain identical electrical ratings and the same physical package specification. Packaging format (Tape & Reel, Cut Tape, or Digi-Reel®) represents the only variation among equivalents and does not affect electrical performance or mechanical fit. Automotive-grade variants (S3MHE3_A/H and S3MHE3_A/I) include AEC-Q101 qualification and are suitable for applications requiring automotive-level reliability assurance.

Parameter Comparison

Part Number	Manufacturer	Vr (Max)	Io	Vf (Max) @ If	trr	Ir @ Vr	Packaging	Product Status	Automotive Grade
S3M-M3/57T	Vishay	1000 V	3 A	1.15 V @ 2.5 A	2.5 µs	10 µA @ 1000 V	Tape & Reel (TR)	Active	No
S3M-E3/57T	Vishay	1000 V	3 A	1.15 V @ 2.5 A	2.5 µs	10 µA @ 1000 V	Cut Tape (CT)	Active	No
S3M-E3/9AT	Vishay	1000 V	3 A	1.15 V @ 2.5 A	2.5 µs	10 µA @ 1000 V	Cut Tape (CT) & Digi-Reel®	Active	No
S3MHE3_A/H	Vishay	1000 V	3 A	1.15 V @ 2.5 A	2.5 µs	10 µA @ 1000 V	Tape & Reel (TR)	Active	Yes (AEC-Q101)
S3MHE3_A/I	Vishay	1000 V	3 A	1.15 V @ 2.5 A	2.5 µs	10 µA @ 1000 V	Tape & Reel (TR)	Active	Yes (AEC-Q101)
S3M V7G	Taiwan Semiconductor Corporation	1000 V	3 A	1.15 V @ 3 A	1.5 µs	10 µA @ 1000 V	Tape & Reel (TR)	Discontinued at DiGi Electronics	No

Engineering Selection Recommendations

Vishay S3M-E3/57T and S3M-E3/9AT are direct electrical equivalents to the S3M-M3/57T with identical electrical specifications. These parts differ only in packaging format (Cut Tape or Digi-Reel® versus Tape & Reel). Selection between these variants depends on assembly equipment compatibility and tape format requirements. Both maintain Active product status and ROHS3 compliance.

Vishay S3MHE3_A/H and S3MHE3_A/I are automotive-qualified variants carrying AEC-Q101 certification. These parts are electrically equivalent to the main part and suitable for applications requiring automotive-grade reliability assurance. Both are available in Tape & Reel packaging and maintain Active product status. The distinction between S3MHE3_A/H and S3MHE3_A/I relates to internal manufacturing or qualification batches; both are functionally interchangeable.

Taiwan Semiconductor Corporation S3M V7G is electrically equivalent with identical voltage and current ratings. This part is listed as Discontinued at DiGi Electronics and should be considered only when existing inventory is available and no alternative sourcing is required. The reverse recovery time (1.5 µs) is faster than the main part (2.5 µs), which may affect circuit behavior in specific applications but does not prevent substitution.

Frequently Asked Questions (FAQ)

Q: Can S3M-E3/57T replace S3M-M3/57T in production assembly?

A: Yes. Both parts are electrically identical with 1000 V reverse voltage, 3 A average rectified current, and DO-214AB packaging. The difference is packaging format: S3M-E3/57T uses Cut Tape while S3M-M3/57T uses Tape & Reel. Compatibility depends on assembly equipment tape format compatibility.

Q: What is the difference between S3MHE3_A/H and S3MHE3_A/I?

A: Both parts are electrically and mechanically identical with AEC-Q101 automotive qualification. The designation difference reflects internal manufacturing or qualification batch tracking. Both are suitable for automotive applications requiring AEC-Q101 compliance.

Q: Is the S3M V7G a suitable substitute despite being discontinued?

A: The S3M V7G meets all electrical specifications for substitution (1000 V, 3 A, DO-214AB package). However, its Discontinued status at DiGi Electronics indicates limited availability. Use this part only when existing inventory is confirmed and alternative sourcing is not feasible. The faster reverse recovery time (1.5 µs versus 2.5 µs) may affect switching behavior in specific circuit topologies.

Q: Should I use automotive-grade parts (S3MHE3_A/H or S3MHE3_A/I) for non-automotive applications?

A: Automotive-grade parts are electrically equivalent to standard-grade parts and are suitable for any application. AEC-Q101 qualification provides additional reliability assurance but is not required for non-automotive use. Selection should be based on application requirements and cost considerations.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts maintain ROHS3 compliance and Moisture Sensitivity Level 1 (Unlimited), matching the environmental and regulatory status of the S3M-M3/57T.

Q: What packaging formats are available among the substitutes?

A: Tape & Reel (TR) is available in S3M-M3/57T, S3MHE3_A/H, S3MHE3_A/I, and S3M V7G. Cut Tape (CT) is available in S3M-E3/57T. Cut Tape & Digi-Reel® is available in S3M-E3/9AT. Select based on assembly equipment compatibility and tape format requirements.

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