U2D-M3/5BT Equivalent & Substitute Parts

Part Overview

The U2D-M3/5BT is a general-purpose fast recovery rectifier diode manufactured by Vishay General Semiconductor - Diodes Division. This surface mount diode is rated for 200 V DC reverse voltage and 2 A average rectified current in a DO-214AA (SMB) package. The part is Active status and ROHS3 compliant, designed for standard rectification applications requiring fast recovery characteristics. Substitute parts are identified to provide design flexibility, alternative packaging formats, and supply chain options while maintaining electrical and mechanical compatibility.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	200	V
Current - Average Rectified (Io)	2	A
Voltage - Forward (Vf) (Max) @ If	900	mV @ 2 A
Speed Classification	Fast Recovery ≤ 500ns, > 200mA (Io)	—
Reverse Recovery Time (trr)	27	ns
Current - Reverse Leakage @ Vr	10	µA @ 200 V
Package / Case	DO-214AA, SMB	—
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 U2D-M3/5BT are qualified based on the following critical parameters:

Electrical Equivalence Criteria:

Voltage - DC Reverse (Vr) (Max): 200 V
Current - Average Rectified (Io): 2 A
Voltage - Forward (Vf) (Max) @ If: 900 mV @ 2 A (±50 mV tolerance acceptable)
Speed Classification: Fast Recovery ≤ 500ns, > 200mA (Io)
Operating Temperature - Junction: -55°C to 150°C

Mechanical Compatibility Criteria:

Package / Case: DO-214AA, SMB
Mounting Type: Surface Mount

Compliance Criteria:

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

Substitute parts are grouped into three categories: (1) Vishay General Semiconductor variants with identical or superior reverse recovery time and packaging options, (2) Automotive-grade alternatives with AEC-Q101 qualification, and (3) Alternative manufacturer equivalents meeting all electrical and mechanical specifications.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Vr (Max) [V]	Io [A]	Vf (Max) @ 2A [mV]	trr [ns]	Ir @ 200V [µA]	Packaging	Automotive Grade	Inventory [Pcs]
U2D-M3/5BT	Vishay General Semiconductor	200	2	900	27	10	Tape & Reel (TR)	—	846
ES2D-E3/52T	Vishay General Semiconductor	200	2	900	30	10	Cut Tape (CT)	—	155985
ES2D-E3/5BT	Vishay General Semiconductor	200	2	900	30	10	Tape & Reel (TR)	—	22500
ES2D-M3/52T	Vishay General Semiconductor	200	2	900	30	10	Tape & Reel (TR)	—	6400
ES2DHE3_A/H	Vishay General Semiconductor	200	2	900	20	10	Tape & Reel (TR)	AEC-Q101	32210
ES2DHE3_A/I	Vishay General Semiconductor	200	2	900	20	10	Tape & Reel (TR)	AEC-Q101	15969
U2D-E3/52T	Vishay General Semiconductor	200	2	900	27	10	Tape & Reel (TR)	—	73900
ES2D	Good-Ark Semiconductor	200	2	950	35	10	Cut Tape (CT) & Digi-Reel®	—	89400
ES2DV	Taiwan Semiconductor Corporation	200	2	900	20	5	Tape & Reel (TR)	—	6817
ES2DVH	Taiwan Semiconductor Corporation	200	2	900	20	10	Tape & Reel (TR)	AEC-Q101	6776

Engineering Selection Recommendations

Vishay General Semiconductor - Standard Grade (Non-Automotive): The ES2D-E3/5BT, ES2D-M3/52T, and U2D-E3/52T are direct electrical equivalents with identical voltage and current ratings. These parts maintain ROHS3 compliance and MSL 1 classification. The ES2D-E3/5BT offers the highest inventory availability (22,500 pcs) in Tape & Reel packaging, matching the original part's format. The U2D-E3/52T provides equivalent reverse recovery time (27 ns) to the main part with superior stock levels (73,900 pcs).

Vishay General Semiconductor - Automotive Grade (AEC-Q101): The ES2DHE3_A/H and ES2DHE3_A/I are automotive-qualified alternatives with improved reverse recovery time (20 ns versus 27 ns). These parts are suitable for applications requiring AEC-Q101 certification. Both maintain identical voltage, current, and forward voltage specifications. The ES2DHE3_A/H provides higher inventory (32,210 pcs) compared to the ES2DHE3_A/I variant (15,969 pcs).

Alternative Manufacturers: The Good-Ark Semiconductor ES2D meets all core electrical specifications with slightly elevated forward voltage (950 mV versus 900 mV) and reverse recovery time (35 ns). This part offers the highest inventory availability (89,400 pcs) in Cut Tape and Digi-Reel® packaging formats. The Taiwan Semiconductor Corporation ES2DV and ES2DVH provide superior reverse recovery time (20 ns) and lower reverse leakage current (5 µA for ES2DV). The ES2DVH variant includes AEC-Q101 automotive qualification.

Packaging Considerations: The original U2D-M3/5BT is supplied in Tape & Reel (TR) format. Equivalent Tape & Reel options include ES2D-E3/5BT, ES2D-M3/52T, ES2DHE3_A/H, ES2DHE3_A/I, U2D-E3/52T, ES2DV, and ES2DVH. Cut Tape (CT) alternatives include ES2D-E3/52T and Good-Ark ES2D. Selection depends on assembly equipment compatibility and procurement requirements.

Frequently Asked Questions (FAQ)

Q: Can ES2D-E3/52T (Cut Tape) be used as a direct replacement for U2D-M3/5BT (Tape & Reel)?

A: The ES2D-E3/52T is electrically equivalent with identical voltage (200 V), current (2 A), and forward voltage (900 mV @ 2 A) specifications. The primary difference is packaging format: Cut Tape versus Tape & Reel. Compatibility depends on assembly equipment capability to process Cut Tape format. Electrical performance is identical.

Q: What is the difference between standard-grade and automotive-grade alternatives?

A: Automotive-grade parts (ES2DHE3_A/H, ES2DHE3_A/I, ES2DVH) carry AEC-Q101 qualification, indicating compliance with automotive reliability standards. These parts feature improved reverse recovery time (20 ns versus 27-30 ns in standard grades). Selection depends on application requirements; automotive-grade parts are necessary for automotive applications but not required for general industrial use.

Q: Are there performance differences between Vishay and alternative manufacturer parts?

A: All substitute parts meet the core electrical specifications (200 V, 2 A, 900 mV forward voltage). Reverse recovery time varies: Vishay standard parts (27-30 ns), Vishay automotive parts (20 ns), Taiwan Semiconductor parts (20 ns), and Good-Ark parts (35 ns). Reverse leakage current is 10 µA for most parts, with Taiwan Semiconductor ES2DV at 5 µA. These variations remain within acceptable operating ranges for general-purpose rectification.

Q: Is the U2D-E3/52T a better choice than ES2D-E3/5BT?

A: Both parts are electrically equivalent with identical specifications. The U2D-E3/52T offers significantly higher inventory (73,900 pcs versus 22,500 pcs) and maintains the same reverse recovery time (27 ns) as the original U2D-M3/5BT. Selection depends on supply chain availability and procurement lead time requirements.

Q: Can Good-Ark ES2D be used in applications sensitive to forward voltage?

A: The Good-Ark ES2D has a maximum forward voltage of 950 mV @ 2 A, compared to 900 mV for the original part. This 50 mV difference may impact power dissipation and thermal performance in current-limited applications. For applications with strict forward voltage requirements, Vishay or Taiwan Semiconductor alternatives are recommended.

Q: What is the significance of reverse recovery time (trr) differences?

A: Reverse recovery time affects switching speed and electromagnetic interference characteristics. The original U2D-M3/5BT has trr of 27 ns. Faster alternatives (20 ns: ES2DHE3_A/H, ES2DHE3_A/I, ES2DV, ES2DVH) provide improved switching performance. Slower alternatives (30-35 ns: ES2D-E3/52T, ES2D-M3/52T, Good-Ark ES2D) remain within fast recovery classification and are suitable for standard rectification applications.

Q: Are all substitute parts ROHS3 compliant?

A: Yes, all listed substitute parts are ROHS3 compliant and carry MSL 1 (Unlimited) moisture sensitivity classification, matching the original U2D-M3/5BT specifications.

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