ES2AA-13 Equivalent & Substitute Parts

Part Overview

The ES2AA-13 is a general-purpose rectifier diode manufactured by Diodes Incorporated, rated for 50 V DC reverse voltage and 2 A average rectified current in a Surface Mount SMA package (DO-214AC). This component is classified as discontinued at DiGi Electronics, indicating limited availability through primary distribution channels. Identification of equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain resilience, and support ongoing production requirements for applications utilizing this rectifier specification.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	50	V
Current - Average Rectified (Io)	2	A
Voltage - Forward (Vf) (Max) @ If	920 mV @ 2 A	mV
Reverse Recovery Time (trr)	25	ns
Current - Reverse Leakage @ Vr	5	µA @ 50 V
Speed Classification	Fast Recovery ≤ 500ns, > 200mA (Io)	—
Package / Case	DO-214AC, SMA	—
Mounting Type	Surface Mount	—
Operating Temperature - Junction	-55°C ~ 150°C	°C
Technology	Standard	—

Substitute Part Grouping Explanation

Substitution of the ES2AA-13 rectifier diode is determined by strict equivalence across the following critical parameters:

Primary Substitution Criteria:

Voltage - DC Reverse (Vr) (Max): 50 V minimum
Current - Average Rectified (Io): 2 A minimum
Package / Case: DO-214AC (SMA) form factor
Mounting Type: Surface Mount
Speed Classification: Fast Recovery ≤ 500ns, > 200mA (Io)

Secondary Compatibility Factors:

Reverse Recovery Time (trr): Equivalent or superior performance
Current - Reverse Leakage @ Vr: Within acceptable operating margins
Operating Temperature Range: Sufficient for application environment
RoHS and REACH Compliance Status: Regulatory alignment

Substitute parts are grouped into two categories: Parametric Equivalents (identical electrical specifications and package) and Manufacturer-Recommended Alternatives (functionally compatible with minor parameter variations acceptable within design margins).

Parameter Comparison

Parameter	ES2AA-13	ES2AA-13-F	ES2A-LTP	MURA105T3G	SURA8205T3G
Manufacturer	Diodes Incorporated	Diodes Incorporated	Micro Commercial Co	onsemi	onsemi
Voltage - DC Reverse (Vr) (Max)	50 V	50 V	50 V	50 V	50 V
Current - Average Rectified (Io)	2 A	2 A	2 A	2 A	2 A
Voltage - Forward (Vf) (Max) @ If	920 mV @ 2 A	920 mV @ 2 A	950 mV @ 2 A	875 mV @ 1 A	940 mV @ 2 A
Reverse Recovery Time (trr)	25 ns	25 ns	35 ns	30 ns	30 ns
Current - Reverse Leakage @ Vr	5 µA @ 50 V	5 µA @ 50 V	5 µA @ 50 V	2 µA @ 50 V	2 µA @ 50 V
Package / Case	DO-214AC, SMA	DO-214AC, SMA	DO-214AC, SMA	DO-214AC, SMA	DO-214AC, SMA
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Operating Temperature - Junction	-55°C ~ 150°C	-55°C ~ 150°C	-65°C ~ 175°C	-65°C ~ 175°C	-65°C ~ 175°C
Product Status	Discontinued at DiGi Electronics	Active	Not For New Designs	Active	Obsolete
RoHS Status	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

Primary Substitute: ES2AA-13-F

The ES2AA-13-F is the direct parametric equivalent to the ES2AA-13, manufactured by Diodes Incorporated. This part maintains identical electrical specifications (50 V, 2 A, 920 mV forward voltage, 25 ns recovery time) and package configuration. The ES2AA-13-F is currently in active product status with 21,393 units in stock, providing immediate supply availability. The primary distinction is packaging format: ES2AA-13-F is supplied in Tape & Reel (TR) configuration versus the original part's unspecified packaging. Both parts are ROHS3 compliant, addressing regulatory requirements superior to the original non-compliant ES2AA-13. This substitute is recommended for direct replacement in new procurement and design continuation.

Secondary Substitute: MURA105T3G

The MURA105T3G, manufactured by onsemi, meets all critical substitution parameters: 50 V reverse voltage, 2 A average rectified current, DO-214AC (SMA) package, and fast recovery speed classification. This part demonstrates superior reverse leakage performance (2 µA versus 5 µA) and extended operating temperature range (-65°C ~ 175°C). The forward voltage specification differs slightly (875 mV @ 1 A versus 920 mV @ 2 A), reflecting different measurement conditions but remaining within acceptable design margins for general-purpose rectification applications. MURA105T3G is active in production with 10,200 units available. ROHS3 compliance and REACH unaffected status align with modern regulatory requirements.

Tertiary Substitute: ES2A-LTP

The ES2A-LTP, manufactured by Micro Commercial Co, provides functional equivalence with minor parameter variations. Reverse voltage (50 V) and current rating (2 A) are identical. Forward voltage is marginally higher (950 mV @ 2 A), and reverse recovery time is extended (35 ns versus 25 ns). Operating temperature range is superior (-65°C ~ 175°C). This part is designated "Not For New Designs," indicating end-of-life status, and should be considered only for legacy system maintenance or when other substitutes are unavailable. Packaging is Cut Tape (CT) format with 6,209 units in stock.

Not Recommended: SURA8205T3G

The SURA8205T3G is classified as obsolete and should not be selected for new applications or ongoing production. Although electrical parameters are compatible (50 V, 2 A, 940 mV forward voltage, 30 ns recovery time), obsolete status indicates discontinued manufacturing and uncertain future availability. Only 1,152 units remain in inventory.

Not Recommended: ES2B

The ES2B, manufactured by YAGEO, does not provide sufficient technical specification data for engineering validation. Available documentation is incomplete, lacking critical parameters including voltage rating, current rating, forward voltage, and recovery time. This part cannot be confirmed as electrically equivalent and should not be selected without complete parametric verification.

Frequently Asked Questions (FAQ)

Q: Can ES2AA-13-F be used as a direct replacement for ES2AA-13?

A: Yes. ES2AA-13-F is a parametric equivalent with identical electrical specifications (50 V, 2 A, 920 mV forward voltage, 25 ns recovery time) and package configuration (DO-214AC, SMA). The only difference is packaging format (Tape & Reel versus unspecified). Both parts are functionally interchangeable in circuit applications. ES2AA-13-F is currently active in production with superior availability.

Q: What is the difference between the packaging formats listed for these diodes?

A: Packaging format refers to the physical delivery method: Tape & Reel (TR) is standard for automated assembly lines and high-volume production; Cut Tape (CT) is used for lower-volume or manual assembly; unspecified packaging indicates the original part's format is not documented. All formats use the same DO-214AC (SMA) component package, so circuit-level compatibility is maintained. Selection depends on assembly process requirements, not electrical performance.

Q: Are all substitute parts RoHS compliant?

A: No. The original ES2AA-13 is RoHS non-compliant. All recommended substitutes (ES2AA-13-F, MURA105T3G, ES2A-LTP, SURA8205T3G) are ROHS3 compliant. If RoHS compliance is required for your application, select from the compliant alternatives. ES2B compliance status cannot be determined from available documentation.

Q: What does "Not For New Designs" mean for ES2A-LTP?

A: This designation indicates the part is in end-of-life status and the manufacturer is not recommending it for new product development. While ES2A-LTP remains functionally compatible with ES2AA-13, it should be used only for legacy system maintenance or repair. For new designs, select ES2AA-13-F or MURA105T3G, both of which are active in production.

Q: Why is SURA8205T3G listed as obsolete?

A: Obsolete status indicates the manufacturer has discontinued production and removed the part from active product lines. Although SURA8205T3G meets electrical substitution criteria, obsolete classification creates supply chain risk and limits future availability. Only 1,152 units remain in inventory. This part should not be selected for applications requiring long-term supply assurance.

Q: How do forward voltage differences affect circuit performance?

A: Forward voltage (Vf) determines the voltage drop across the diode during conduction. ES2AA-13 specifies 920 mV @ 2 A. Substitutes range from 875 mV (MURA105T3G @ 1 A) to 950 mV (ES2A-LTP @ 2 A). These variations are within typical design margins for general-purpose rectification. In precision applications with tight voltage budgets, verify that the substitute's forward voltage does not exceed circuit tolerance limits. Differences of 30 mV are generally acceptable in power supply and switching applications.

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. ES2AA-13 specifies 25 ns. Substitutes range from 25 ns (ES2AA-13-F) to 35 ns (ES2A-LTP). Faster recovery reduces switching losses and electromagnetic interference in high-frequency applications. For low-frequency rectification (50/60 Hz), recovery time differences are negligible. For switching frequencies above 100 kHz, verify that the substitute's recovery time is acceptable for your application.

Q: Can I use MURA105T3G if my circuit operates at temperatures below -55°C?

A: Yes. MURA105T3G operates from -65°C to 175°C, extending the lower temperature limit by 10°C compared to ES2AA-13 (-55°C to 150°C). If your application requires operation below -55°C, MURA105T3G, ES2A-LTP, and SURA8205T3G all support -65°C minimum temperature. Verify that other circuit components also support the extended temperature range.

Q: Why is ES2B not recommended as a substitute?

A: ES2B documentation lacks critical electrical specifications including voltage rating, current rating, forward voltage, and recovery time. Without complete parametric data, electrical equivalence cannot be confirmed. Additionally, ES2B is described as a "RECTIFIER DO-214AA" which may indicate a different package variant than the DO-214AC (SMA) required for ES2AA-13 substitution. Do not select ES2B without obtaining complete technical specifications and verifying package compatibility.

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