ESH3D-M3/9AT Equivalent & Substitute Parts

Part Overview

The ESH3D-M3/9AT is a general-purpose rectifier diode manufactured by Vishay General Semiconductor - Diodes Division. This surface mount diode operates at 200 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.

Substitute parts are identified when equivalent electrical performance and mechanical compatibility are maintained across the specified parameter set. Alternative sources and packaging configurations may be required due to inventory availability, supply chain considerations, or application-specific requirements such as automotive qualification.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	200	V
Current - Average Rectified (Io)	3	A
Voltage - Forward (Vf) (Max) @ If	900 mV @ 3 A	mV
Reverse Recovery Time (trr)	40	ns
Current - Reverse Leakage @ Vr	5	µA @ 200 V
Package / Case	DO-214AB, SMC	—
Mounting Type	Surface Mount	—
Operating Temperature - Junction	-55 to 175	°C
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution of the ESH3D-M3/9AT is determined by equivalence in the following critical parameters:

Voltage Rating: DC reverse voltage of 200 V (maximum)
Current Rating: Average rectified current of 3 A
Package Type: DO-214AB (SMC) surface mount form factor
Forward Voltage: Maximum forward voltage drop at rated current
Recovery Characteristics: Reverse recovery time and leakage current
Compliance: ROHS3 compliance and moisture sensitivity level (MSL 1)

Substitute parts are classified into two categories:

Parametric Equivalents maintain identical electrical specifications and are sourced from the same manufacturer (Vishay). These parts differ only in packaging configuration (Tape & Reel versus Cut Tape) or include additional automotive qualification.

Manufacturer Recommended Substitutes are sourced from alternative manufacturers and may exhibit variations in forward voltage, recovery speed, or leakage current while maintaining the same voltage and current ratings and package type.

Parameter Comparison

Parameter	ESH3D-M3/9AT	ESH3D-E3/57T	ESH3DHE3_A/H	S3D-TP
Manufacturer	Vishay	Vishay	Vishay	Micro Commercial Co
Voltage - DC Reverse (Vr) (Max)	200 V	200 V	200 V	200 V
Current - Average Rectified (Io)	3 A	3 A	3 A	3 A
Voltage - Forward (Vf) (Max) @ If	900 mV @ 3 A	900 mV @ 3 A	900 mV @ 3 A	1.2 V @ 3 A
Reverse Recovery Time (trr)	40 ns	40 ns	40 ns	Not specified
Current - Reverse Leakage @ Vr	5 µA @ 200 V	5 µA @ 200 V	5 µA @ 200 V	10 µA @ 200 V
Speed Classification	Fast Recovery ≤ 500ns	Fast Recovery ≤ 500ns	Fast Recovery ≤ 500ns	Standard Recovery > 500ns
Package / Case	DO-214AB, SMC	DO-214AB, SMC	DO-214AB, SMC	DO-214AB, SMC
Packaging Type	Tape & Reel (TR)	Tape & Reel (TR)	Cut Tape (CT)	Tape & Reel (TR)
Operating Temperature - Junction	-55 to 175°C	-55 to 175°C	-55 to 175°C	-55 to 150°C
Product Status	Active	Active	Active	Not For New Designs
Automotive Qualification	—	—	AEC-Q101	—
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

ESH3D-E3/57T is a direct parametric equivalent to the ESH3D-M3/9AT. Both parts are manufactured by Vishay with identical electrical specifications, including 200 V reverse voltage, 3 A current rating, 900 mV forward voltage at 3 A, and 40 ns reverse recovery time. The primary difference is packaging configuration: ESH3D-E3/57T is supplied in Tape & Reel format with higher inventory availability (10,200 pcs). This part is suitable for direct substitution in applications where packaging format does not impose constraints.

ESH3DHE3_A/H is a parametric equivalent with identical electrical specifications and includes AEC-Q101 automotive qualification. This part is supplied in Cut Tape packaging and is appropriate for applications requiring automotive-grade components or where cut tape packaging is preferred. Operating temperature range matches the main part (-55 to 175°C).

S3D-TP is a manufacturer-recommended substitute from Micro Commercial Co. This part maintains the 200 V voltage rating and 3 A current rating in the same DO-214AB package. However, it exhibits higher forward voltage (1.2 V @ 3 A versus 900 mV @ 3 A), higher reverse leakage current (10 µA @ 200 V versus 5 µA @ 200 V), and is classified as Standard Recovery rather than Fast Recovery. The product status is listed as Not For New Designs. This part is suitable only for legacy applications or where the electrical performance differences are acceptable. The maximum operating temperature is limited to 150°C.

For new designs, ESH3D-E3/57T or ESH3DHE3_A/H are recommended. For automotive applications, ESH3DHE3_A/H is the appropriate selection.

Frequently Asked Questions (FAQ)

Q: Can ESH3D-E3/57T be used as a direct replacement for ESH3D-M3/9AT?

A: Yes. Both parts are manufactured by Vishay with identical electrical specifications: 200 V reverse voltage, 3 A average rectified current, 900 mV forward voltage at 3 A, and 40 ns reverse recovery time. The only difference is packaging format (Tape & Reel). Both are ROHS3 compliant and operate across -55 to 175°C.

Q: What is the difference between ESH3DHE3_A/H and the main part?

A: ESH3DHE3_A/H is electrically identical to ESH3D-M3/9AT but includes AEC-Q101 automotive qualification and is supplied in Cut Tape packaging rather than Tape & Reel. It is suitable for automotive applications requiring qualified components.

Q: Why does S3D-TP have higher forward voltage?

A: S3D-TP is manufactured by Micro Commercial Co and exhibits different semiconductor characteristics. The forward voltage is 1.2 V @ 3 A compared to 900 mV @ 3 A for the Vishay parts. This represents a 300 mV difference and will result in higher power dissipation in the diode.

Q: Is S3D-TP suitable for new designs?

A: S3D-TP is marked as Not For New Designs. It is available for legacy applications only. For new designs, ESH3D-E3/57T or ESH3DHE3_A/H are the recommended selections.

Q: What is the significance of Fast Recovery versus Standard Recovery classification?

A: Fast Recovery diodes have reverse recovery time ≤ 500 ns and are suitable for high-frequency switching applications. Standard Recovery diodes have reverse recovery time > 500 ns and are suitable for lower-frequency applications. ESH3D-M3/9AT, ESH3D-E3/57T, and ESH3DHE3_A/H are Fast Recovery devices with 40 ns reverse recovery time. S3D-TP is Standard Recovery and exhibits longer switching transients.

Q: Can packaging format affect circuit performance?

A: Packaging format (Tape & Reel versus Cut Tape) does not affect electrical performance. The choice depends on assembly process requirements and inventory management. Tape & Reel is standard for automated pick-and-place assembly. Cut Tape is used for manual assembly or lower-volume applications.

Q: What does MSL 1 (Unlimited) mean?

A: Moisture Sensitivity Level 1 indicates the component has unlimited shelf life and does not require special moisture control during storage or handling. All substitute parts listed carry MSL 1 classification.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. ESH3D-M3/9AT, ESH3D-E3/57T, ESH3DHE3_A/H, and S3D-TP are all ROHS3 compliant and REACH unaffected.

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