ES2D Equivalent & Substitute Parts

Part Overview

The ES2D is a general-purpose rectifier diode manufactured by onsemi, rated for 200 V DC reverse voltage and 2 A average rectified current in a DO-214AA (SMB) surface mount package. This component is classified as "Not For New Designs," indicating it has reached end-of-life status. The fast recovery characteristic (≤500 ns) and 20 ns reverse recovery time make it suitable for switching power supply applications and general rectification circuits. Due to its obsolescence status, equivalent and substitute parts from active manufacturers are necessary for ongoing production and maintenance applications.

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 ≤500 ns	ns
Reverse Recovery Time (trr)	20	ns
Current - Reverse Leakage @ Vr	10	µA @ 200 V
Package / Case	DO-214AA, SMB	—
Mounting Type	Surface Mount	—
Operating Temperature - Junction	-50°C to 150°C	°C
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution of the ES2D is determined by strict electrical and mechanical compatibility criteria. The primary substitution parameters are:

Electrical Requirements:

Voltage - DC Reverse (Vr) rating must equal or exceed 200 V
Current - Average Rectified (Io) rating must equal or exceed 2 A
Forward voltage (Vf) must not significantly exceed 900 mV @ 2 A to maintain circuit efficiency
Speed classification must support fast recovery operation (≤500 ns) for switching applications

Mechanical Requirements:

Package must be DO-214AA (SMB) surface mount for PCB compatibility
Mounting type must be surface mount

Compliance Requirements:

RoHS3 compliance preferred for new designs
MSL rating of 1 (Unlimited) for storage and handling

Substitute parts are grouped into two categories:

Direct Equivalents (Same Electrical and Mechanical Specifications): Parts from Vishay General Semiconductor (ES2D-E3/52T, ES2D/1, U2D-E3/52T, U2D-M3/52T, U2D-M3/5BT) that maintain identical or near-identical electrical performance with the same DO-214AA package.

Similar Alternatives (Different Current Rating or Package Variant): Parts that meet the 200 V voltage requirement but differ in current rating (MURS120T3G at 1 A) or package format (MURA220T3G in SMA package), suitable only when circuit design permits the variation.

Non-Recommended Alternatives (Marginal Compliance): Parts such as CGRB203-G and CMR1-02 variants that meet voltage and package requirements but employ standard recovery speed (>500 ns) rather than fast recovery, introducing performance trade-offs in switching applications.

Parameter Comparison

Part Number	Manufacturer	Vr (Max) V	Io (A)	Vf (Max) @ If	Speed	trr (ns)	Package	Product Status	RoHS
ES2D	onsemi	200	2	900 mV @ 2 A	Fast Recovery ≤500 ns	20	DO-214AA (SMB)	Not For New Designs	ROHS3
ES2D-E3/52T	Vishay	200	2	900 mV @ 2 A	Fast Recovery ≤500 ns	30	DO-214AA (SMB)	Active	ROHS3
ES2D/1	Vishay	200	2	900 mV @ 2 A	Fast Recovery ≤500 ns	30	DO-214AA (SMB)	Active	Non-compliant
U2D-E3/52T	Vishay	200	2	900 mV @ 2 A	Fast Recovery ≤500 ns	27	DO-214AA (SMB)	Active	ROHS3
U2D-M3/52T	Vishay	200	2	900 mV @ 2 A	Fast Recovery ≤500 ns	27	DO-214AA (SMB)	Active	ROHS3
U2D-M3/5BT	Vishay	200	2	900 mV @ 2 A	Fast Recovery ≤500 ns	27	DO-214AA (SMB)	Active	ROHS3
MURA220T3G	onsemi	200	2	950 mV @ 2 A	Fast Recovery ≤500 ns	35	DO-214AC (SMA)	Active	ROHS3
MURS120T3G	onsemi	200	1	875 mV @ 1 A	Fast Recovery ≤500 ns	35	DO-214AA (SMB)	Active	ROHS3
CGRB203-G	Comchip	200	2	1.1 V @ 2 A	Standard Recovery >500 ns	—	DO-214AA (SMB)	Active	ROHS3
CMR1-02 TR13 PBFREE	Central Semiconductor	200	1	1.1 V @ 1 A	Fast Recovery ≤500 ns	—	DO-214AA (SMB)	Active	ROHS3
CMR1-02 BK PBFREE	Central Semiconductor	200	1	1.1 V @ 1 A	Standard Recovery >500 ns	—	DO-214AA (SMB)	Active	ROHS3

Engineering Selection Recommendations

Primary Recommendation - Direct Equivalents:

The Vishay U2D-E3/52T, U2D-M3/52T, and U2D-M3/5BT are the preferred direct substitutes for the ES2D. These parts maintain identical electrical specifications (200 V, 2 A, 900 mV forward voltage, fast recovery ≤500 ns) in the same DO-214AA package. All three are classified as Active products with ROHS3 compliance, ensuring long-term availability and regulatory conformance. The reverse recovery time (27 ns) is superior to the original ES2D (20 ns), providing improved switching performance. These parts are suitable for direct PCB replacement without circuit modification.

The Vishay ES2D-E3/52T is an alternative direct equivalent with identical specifications and ROHS3 compliance, though it carries a slightly longer reverse recovery time (30 ns).

Secondary Recommendation - onsemi Active Equivalent:

The onsemi MURA220T3G maintains the same electrical performance (200 V, 2 A, fast recovery) and Active product status with ROHS3 compliance. However, it is packaged in DO-214AC (SMA) format rather than DO-214AA (SMB). This part is suitable only if PCB layout and footprint design accommodate the SMA package variant. The forward voltage is marginally higher (950 mV vs. 900 mV), which may introduce minor efficiency differences in power conversion applications.

Current-Reduced Alternative:

The onsemi MURS120T3G provides a 1 A rated current in the DO-214AA package with identical voltage rating and fast recovery characteristics. This part is suitable only for applications where the circuit design permits operation at 1 A maximum current. It is not a direct replacement for 2 A applications.

Non-Recommended Alternatives:

The Comchip CGRB203-G and Central Semiconductor CMR1-02 variants employ standard recovery speed (>500 ns) rather than fast recovery. These parts are not suitable for switching power supply applications requiring fast recovery performance. The CMR1-02 variants are also rated for 1 A current, further limiting their applicability as ES2D replacements.

Compliance Consideration:

The Vishay ES2D/1 is electrically equivalent but carries RoHS non-compliant status. This part is not suitable for new designs or applications subject to RoHS3 regulatory requirements.

Frequently Asked Questions (FAQ)

Q: Can the MURA220T3G (SMA package) be used as a direct replacement for the ES2D (SMB package)?

A: The MURA220T3G is electrically equivalent but uses a different surface mount package (DO-214AC SMA vs. DO-214AA SMB). Direct PCB replacement is not possible without footprint modification. The SMA package is physically smaller than SMB, requiring PCB redesign. Use only if circuit layout can accommodate the SMA footprint.

Q: What is the difference between fast recovery and standard recovery diodes?

A: Fast recovery diodes (≤500 ns) are designed for switching applications where rapid reverse recovery is critical to minimize switching losses and electromagnetic interference. Standard recovery diodes (>500 ns) are suitable for line-frequency rectification and general-purpose applications. The ES2D requires fast recovery performance; standard recovery alternatives introduce performance degradation in switching circuits.

Q: Why is the ES2D classified as "Not For New Designs"?

A: This classification indicates the part has reached end-of-life status at the manufacturer. While existing inventory may be available, the manufacturer does not recommend its use in new product designs. Active equivalent parts from Vishay (U2D series) or onsemi (MURA220T3G) should be selected for new designs to ensure long-term supply continuity and manufacturer support.

Q: Can the CMR1-02 series be used as a substitute?

A: The CMR1-02 series is rated for 1 A maximum current, compared to the ES2D's 2 A rating. It is not suitable for applications requiring 2 A operation. Additionally, the CMR1-02 BK variant uses standard recovery speed, which is incompatible with fast recovery switching applications. The CMR1-02 TR13 variant supports fast recovery but remains limited by its 1 A current rating.

Q: What are the key electrical parameters that determine substitution compatibility?

A: The critical parameters are: (1) Voltage - DC Reverse rating must equal or exceed 200 V, (2) Current - Average Rectified rating must equal or exceed 2 A, (3) Speed classification must support fast recovery (≤500 ns) for switching applications, and (4) Forward voltage should not significantly exceed 900 mV @ 2 A to maintain circuit efficiency. Package format (DO-214AA SMB) must also match for direct PCB replacement.

Q: Are there any temperature range differences between the ES2D and its substitutes?

A: The ES2D operates from -50°C to 150°C junction temperature. Most active substitutes (Vishay U2D series, onsemi MURA220T3G) operate from -55°C to 175°C or -65°C to 175°C, providing extended temperature range capability. This difference is not a limiting factor for substitution; the wider operating range of active parts is advantageous for reliability.

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

A: Reverse recovery time is the interval required for a forward-biased diode to cease conduction when reverse bias is applied. Shorter trr values (20-30 ns for ES2D and substitutes) minimize switching losses and reduce electromagnetic interference in high-frequency switching applications. The ES2D's 20 ns trr is matched or exceeded by all recommended substitutes, ensuring compatible switching performance.

Q: Is RoHS3 compliance mandatory for selecting a substitute?

A: RoHS3 compliance is mandatory for products destined for European markets and increasingly required by global supply chain standards. All recommended active substitutes carry ROHS3 compliance. The Vishay ES2D/1 is RoHS non-compliant and should not be selected for new designs or applications subject to regulatory requirements.

Q: Can the MURS120T3G (1 A rated) be paralleled to achieve 2 A operation?

A: Paralleling diodes for current multiplication is not a standard engineering practice for rectifier diodes due to unequal current distribution caused by forward voltage variations between devices. This approach introduces reliability risks and is not recommended. Use only parts rated for the required current specification.

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