U2D-M3/52T Equivalent & Substitute Parts

Part Overview

The U2D-M3/52T 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 2 A average rectified current in a DO-214AA (SMB) package. The device is classified as a fast recovery diode with a reverse recovery time of 27 nanoseconds and is actively produced with ROHS3 compliance and unlimited moisture sensitivity level (MSL 1).

Equivalent and substitute parts are identified when design requirements permit component interchangeability based on electrical performance parameters, mechanical packaging, and operational specifications. Alternative sources and packaging formats may be necessary due to inventory availability, supply chain considerations, or specific application requirements.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) Maximum	200	V
Current - Average Rectified (Io)	2	A
Voltage - Forward (Vf) Maximum @ If	900 mV @ 2 A	mV @ A
Speed Classification	Fast Recovery ≤ 500ns, > 200mA (Io)	—
Reverse Recovery Time (trr)	27	ns
Current - Reverse Leakage @ Vr	10	µA @ 200 V
Capacitance @ Vr, F	16	pF @ 4V, 1MHz
Package / Case	DO-214AA, SMB	—
Mounting Type	Surface Mount	—
Operating Temperature - Junction	-55 to 150	°C
Packaging Format	Tape & Reel (TR)	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the U2D-M3/52T is determined by the following critical parameters:

Electrical Equivalence Criteria:

Voltage - DC Reverse (Vr) Maximum: 200 V minimum
Current - Average Rectified (Io): 2 A minimum
Voltage - Forward (Vf) Maximum @ If: 900 mV or lower @ 2 A
Speed Classification: Fast Recovery ≤ 500ns, > 200mA (Io)
Operating Temperature Range: -55°C to 150°C minimum

Mechanical Compatibility Criteria:

Package / Case: DO-214AA (SMB) surface mount
Mounting Type: Surface Mount

Compliance & Environmental Criteria:

RoHS Status: ROHS3 Compliant
Moisture Sensitivity Level: MSL 1 (Unlimited)

Substitute parts are grouped into the following categories:

Parametric Equivalents (Vishay General Semiconductor): Parts ES2D-E3/52T, ES2D-E3/5BT, ES2D-M3/52T, and U2D-E3/52T meet all electrical and mechanical requirements with identical or superior performance characteristics. These parts differ primarily in packaging format (Cut Tape vs. Tape & Reel) and minor variations in reverse recovery time (27–30 ns) and capacitance (16–18 pF).

Parametric Equivalents with Automotive Qualification (Vishay General Semiconductor): Parts ES2DHE3_A/H and ES2DHE3_A/I are AEC-Q101 qualified automotive-grade devices with improved reverse recovery time (20 ns) and identical electrical specifications.

Cross-Manufacturer Parametric Equivalents: Parts ES2DV and ES2DVH from Taiwan Semiconductor Corporation meet electrical specifications with 20 ns reverse recovery time and 25 pF capacitance. ES2DVH includes automotive qualification (AEC-Q101).

Alternative Manufacturer Standard Equivalent: Part ES2D from Good-Ark Semiconductor meets core electrical requirements with slightly higher forward voltage (950 mV @ 2 A), reverse recovery time (35 ns), and capacitance (25 pF).

Higher Current Rated Alternative: Part ES3DBHR5G from Taiwan Semiconductor Corporation provides 3 A current rating at 200 V with identical package and temperature range, suitable for applications requiring increased current capacity.

Parameter Comparison

Part Number	Manufacturer	Vr (Max) V	Io (A)	Vf (Max) mV @ 2A	trr (ns)	Ir @ 200V (µA)	C @ 4V (pF)	Package	Packaging Format	Automotive Grade
U2D-M3/52T	Vishay	200	2	900	27	10	16	DO-214AA	Tape & Reel	No
ES2D-E3/52T	Vishay	200	2	900	30	10	18	DO-214AA	Cut Tape	No
ES2D-E3/5BT	Vishay	200	2	900	30	10	18	DO-214AA	Tape & Reel	No
ES2D-M3/52T	Vishay	200	2	900	30	10	18	DO-214AA	Tape & Reel	No
ES2DHE3_A/H	Vishay	200	2	900	20	10	18	DO-214AA	Tape & Reel	Yes (AEC-Q101)
ES2DHE3_A/I	Vishay	200	2	900	20	10	18	DO-214AA	Tape & Reel	Yes (AEC-Q101)
U2D-E3/52T	Vishay	200	2	900	27	10	—	DO-214AA	Tape & Reel	No
ES2D	Good-Ark	200	2	950	35	10	25	DO-214AA	Cut Tape & Digi-Reel	No
ES3DBHR5G	Taiwan Semiconductor	200	3	1000 @ 3A	35	100	46	DO-214AA	Cut Tape	No
ES2DV	Taiwan Semiconductor	200	2	900	20	5	25	DO-214AA	Tape & Reel	No
ES2DVH	Taiwan Semiconductor	200	2	900	20	10	25	DO-214AA	Tape & Reel	Yes (AEC-Q101)

Engineering Selection Recommendations

Direct Substitution (Identical Electrical Performance):

Parts ES2D-E3/5BT, ES2D-M3/52T, and U2D-E3/52T from Vishay General Semiconductor are direct substitutes with matching electrical specifications. These parts maintain the 200 V reverse voltage, 2 A current rating, and 900 mV forward voltage. Selection among these options depends on packaging format availability: Tape & Reel format is preferred for automated assembly processes, while Cut Tape format suits lower-volume applications.

Enhanced Performance Substitutes (Improved Reverse Recovery Time):

Parts ES2DHE3_A/H, ES2DHE3_A/I, ES2DV, and ES2DVH offer reduced reverse recovery time (20 ns versus 27 ns), resulting in faster switching characteristics and reduced switching losses. These parts are suitable for applications where improved efficiency or higher switching frequencies are beneficial. ES2DHE3_A/H, ES2DHE3_A/I, and ES2DVH carry AEC-Q101 automotive qualification, appropriate for automotive and industrial applications requiring enhanced reliability standards.

Alternative Manufacturer Substitute (Good-Ark ES2D):

The Good-Ark ES2D meets core electrical requirements with slightly degraded performance characteristics: forward voltage of 950 mV (versus 900 mV), reverse recovery time of 35 ns (versus 27 ns), and higher capacitance of 25 pF (versus 16 pF). This part is suitable for non-critical applications where performance margins are adequate and cost optimization is prioritized.

Higher Current Rated Alternative (Taiwan Semiconductor ES3DBHR5G):

The ES3DBHR5G provides 3 A current rating at 200 V, suitable for applications requiring increased current capacity beyond the 2 A specification of the U2D-M3/52T. This part exhibits higher reverse leakage current (100 µA versus 10 µA) and increased capacitance (46 pF versus 16 pF), which may affect circuit performance in sensitive applications.

Compliance & Regulatory Considerations:

All substitute parts maintain ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity level, ensuring compatibility with standard manufacturing and storage practices. Automotive-qualified variants (ES2DHE3_A/H, ES2DHE3_A/I, ES2DVH) are appropriate for applications subject to automotive reliability standards and AEC-Q101 qualification requirements.

Frequently Asked Questions (FAQ)

Q: Can ES2D-E3/52T replace U2D-M3/52T in my application?

A: Yes. ES2D-E3/52T is a parametric equivalent with identical electrical specifications (200 V, 2 A, 900 mV forward voltage). The primary difference is packaging format: ES2D-E3/52T is supplied in Cut Tape format, while U2D-M3/52T is Tape & Reel. Both are Vishay products with ROHS3 compliance and MSL 1 rating. Verify your assembly equipment compatibility with Cut Tape format before substitution.

Q: What is the difference between ES2DHE3_A/H and the standard U2D-M3/52T?

A: ES2DHE3_A/H is an automotive-grade variant with AEC-Q101 qualification and improved reverse recovery time (20 ns versus 27 ns). Electrical specifications are identical: 200 V, 2 A, 900 mV forward voltage. The automotive qualification makes ES2DHE3_A/H suitable for automotive and high-reliability applications. Both parts use DO-214AA packaging and Tape & Reel format.

Q: Can I use ES3DBHR5G as a substitute for U2D-M3/52T?

A: ES3DBHR5G is a higher current rated alternative (3 A versus 2 A) at the same 200 V reverse voltage. While mechanically compatible (DO-214AA package), the increased current rating results in higher reverse leakage current (100 µA versus 10 µA) and increased capacitance (46 pF versus 16 pF). Use ES3DBHR5G only when your application requires the additional current capacity and can tolerate the increased leakage and capacitance characteristics.

Q: What is the difference between Tape & Reel and Cut Tape packaging?

A: Tape & Reel format supplies components on continuous carrier tape wound on reels, suitable for high-speed automated pick-and-place assembly. Cut Tape format supplies components on shorter tape segments, appropriate for lower-volume production or manual assembly. Both formats use identical DO-214AA component packages. Verify your assembly equipment specifications before selecting packaging format.

Q: Are Taiwan Semiconductor parts ES2DV and ES2DVH compatible with U2D-M3/52T?

A: Yes. Both ES2DV and ES2DVH meet electrical specifications with 200 V reverse voltage, 2 A current rating, and 900 mV forward voltage. Both offer improved reverse recovery time (20 ns versus 27 ns). ES2DVH includes AEC-Q101 automotive qualification. Both use DO-214AA packaging in Tape & Reel format. These are cross-manufacturer substitutes suitable for applications where supply chain diversification is required.

Q: What does ROHS3 compliance mean for component substitution?

A: ROHS3 compliance indicates the component meets Restriction of Hazardous Substances Directive requirements, restricting lead, cadmium, mercury, and other hazardous materials. All substitute parts listed maintain ROHS3 compliance, ensuring compatibility with environmental regulations and manufacturing standards. This compliance status is consistent across all recommended substitutes.

Q: Can I substitute U2D-M3/52T with Good-Ark ES2D?

A: Yes, with performance trade-offs. Good-Ark ES2D meets core specifications (200 V, 2 A, DO-214AA package) but exhibits degraded performance: forward voltage of 950 mV (versus 900 mV), reverse recovery time of 35 ns (versus 27 ns), and higher capacitance of 25 pF (versus 16 pF). Use this substitute only when cost optimization is prioritized and your application can tolerate reduced switching performance and increased power dissipation.

Q: What does MSL 1 (Unlimited) moisture sensitivity level mean?

A: MSL 1 indicates the component has unlimited shelf life and does not require special moisture control during storage or handling. All substitute parts maintain MSL 1 rating, eliminating the need for dry-pack storage or baking procedures before assembly. This simplifies inventory management and reduces handling costs.

Q: How do I select between multiple Vishay substitutes?

A: Selection depends on application requirements and supply availability. For standard applications, ES2D-E3/5BT or ES2D-M3/52T provide identical performance in Tape & Reel format. For improved switching performance, select ES2DHE3_A/H or ES2DHE3_A/I (automotive-qualified). For cost-optimized designs, ES2D-E3/52T in Cut Tape format is suitable if your assembly equipment supports this format. Verify inventory availability and lead times for your selected part.

Q: What is reverse recovery time and why does it matter?

A: Reverse recovery time (trr) is the interval required for a diode to stop conducting after the applied voltage reverses polarity. Shorter reverse recovery time reduces switching losses and enables higher switching frequencies. U2D-M3/52T has 27 ns trr, while improved substitutes (ES2DHE3_A/H, ES2DV, ES2DVH) offer 20 ns trr. Select lower trr variants for high-frequency switching applications or when minimizing power dissipation is critical.

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