ES3A-13 Equivalent & Substitute Parts

Part Overview

The ES3A-13 is a fast recovery rectifier diode manufactured by Diodes Incorporated, rated for 50 V DC reverse voltage and 3 A average rectified current in a surface mount SMC (DO-214AB) package. This part is discontinued at DiGi Electronics, necessitating identification of equivalent and substitute components for ongoing design support and procurement.

The ES3A-13 features fast recovery characteristics with a reverse recovery time of 25 ns, making it suitable for applications requiring rapid switching performance. The part operates across a junction temperature range of -55°C to 150°C and carries RoHS non-compliant status with REACH affected designation.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	50	V
Current - Average Rectified (Io)	3	A
Voltage - Forward (Vf) (Max) @ If	900 mV @ 3 A	mV
Reverse Recovery Time (trr)	25	ns
Speed Classification	Fast Recovery ≤ 500ns, > 200mA (Io)	—
Current - Reverse Leakage @ Vr	10 µA @ 50 V	µA
Capacitance @ Vr, F	45	pF @ 4V, 1MHz
Package / Case	DO-214AB, SMC	—
Operating Temperature - Junction	-55 to 150	°C
Mounting Type	Surface Mount	—

Substitute Part Grouping Explanation

Substitution of the ES3A-13 is determined by the following critical parameters:

Mandatory Matching Parameters:

Voltage - DC Reverse (Vr) (Max): 50 V
Current - Average Rectified (Io): 3 A
Package / Case: DO-214AB, SMC
Mounting Type: Surface Mount

Performance Characteristics:

Speed classification (Fast Recovery ≤ 500ns or Standard Recovery >500ns)
Reverse Recovery Time (trr)
Forward Voltage (Vf) at rated current
Reverse Leakage Current

Substitute parts are grouped into two categories:

Category 1: Parametric Equivalents — Parts matching all mandatory parameters with identical or superior electrical performance characteristics, particularly fast recovery speed classification and reverse recovery time specifications.

Category 2: Functional Alternatives — Parts matching voltage and current ratings with the same package but differing in speed classification or recovery characteristics, suitable for applications where switching speed is not critical.

Parameter Comparison

Part Number	Manufacturer	Vr (Max)	Io	Vf @ If	trr	Speed	Package	Product Status	RoHS Status
ES3A-13	Diodes Incorporated	50 V	3 A	900 mV @ 3 A	25 ns	Fast Recovery ≤ 500ns	DO-214AB, SMC	Discontinued	RoHS Non-Compliant
ES3A-13-F	Diodes Incorporated	50 V	3 A	900 mV @ 3 A	25 ns	Fast Recovery ≤ 500ns	DO-214AB, SMC	Active	ROHS3 Compliant
ES3A-E3/57T	Vishay General Semiconductor - Diodes Division	50 V	3 A	900 mV @ 3 A	30 ns	Fast Recovery ≤ 500ns	DO-214AB, SMC	Active	ROHS3 Compliant
ES3A-E3/9AT	Vishay General Semiconductor - Diodes Division	50 V	3 A	900 mV @ 3 A	30 ns	Fast Recovery ≤ 500ns	DO-214AB, SMC	Active	ROHS3 Compliant
ES3A	Taiwan Semiconductor Corporation	50 V	3 A	950 mV @ 3 A	35 ns	Fast Recovery ≤ 500ns	DO-214AB, SMC	Active	ROHS3 Compliant
S3A-E3/57T	Vishay General Semiconductor - Diodes Division	50 V	3 A	1.15 V @ 2.5 A	2.5 µs	Standard Recovery >500ns	DO-214AB, SMC	Active	ROHS3 Compliant
S3A	Diodes Incorporated	50 V	3 A	1.15 V @ 3 A	2 µs	Standard Recovery >500ns	DO-214AB, SMC	Obsolete	ROHS3 Compliant
SMLJ60S05-TP	Micro Commercial Co	50 V	6 A	1 V @ 6 A	—	Standard Recovery >500ns	DO-214AB, SMC	Not For New Designs	ROHS3 Compliant
S10A-TP	Micro Commercial Co	50 V	10 A	1.2 V @ 10 A	—	Standard Recovery >500ns	DO-214AB, SMC	Obsolete	ROHS3 Compliant
STTH302S	STMicroelectronics	200 V	3 A	950 mV @ 3 A	35 ns	Fast Recovery ≤ 500ns	DO-214AB, SMC	Active	ROHS3 Compliant

Engineering Selection Recommendations

Primary Recommendation: ES3A-13-F

The ES3A-13-F is the direct equivalent replacement for the discontinued ES3A-13. Both parts are manufactured by Diodes Incorporated and share identical electrical specifications including 50 V reverse voltage, 3 A average rectified current, 900 mV forward voltage at 3 A, and 25 ns reverse recovery time. The ES3A-13-F is currently active in production and carries ROHS3 compliance with REACH unaffected status, addressing regulatory requirements absent in the original part. Packaging is available in Cut Tape and Digi-Reel formats with 10,300 pieces in stock.

Secondary Recommendation: ES3A-E3/57T and ES3A-E3/9AT

Both Vishay General Semiconductor parts provide parametric equivalence with fast recovery characteristics. These parts maintain the 50 V / 3 A rating and 900 mV forward voltage specification. Reverse recovery time is 30 ns, marginally higher than the ES3A-13 at 25 ns. Both parts are active with ROHS3 compliance. ES3A-E3/57T is supplied in Tape & Reel packaging with 5,250 pieces available; ES3A-E3/9AT is also Tape & Reel with 2,177 pieces available.

Tertiary Recommendation: ES3A (Taiwan Semiconductor Corporation)

This part maintains the 50 V / 3 A core specifications with fast recovery classification. Forward voltage is 950 mV at 3 A and reverse recovery time is 35 ns. The part is active with ROHS3 compliance and 17,100 pieces in stock. This option is suitable where the marginal increase in recovery time is acceptable.

Alternative for Non-Critical Switching Applications: S3A-E3/57T

For applications where fast recovery is not required, the S3A-E3/57T from Vishay provides 50 V / 3 A ratings in standard recovery classification with 2.5 µs reverse recovery time. This part is active with ROHS3 compliance and 15,100 pieces in stock.

Not Recommended for Direct Substitution:

STTH302S: 200 V reverse voltage exceeds application requirements
S10A-TP: 10 A current rating exceeds specification; obsolete status
SMLJ60S05-TP: 6 A current rating exceeds specification; not for new designs status
S3A: Obsolete status; standard recovery characteristics

Frequently Asked Questions (FAQ)

Q: Can ES3A-13-F be used as a direct replacement for ES3A-13?

A: Yes. ES3A-13-F is the active production equivalent with identical electrical specifications: 50 V reverse voltage, 3 A average rectified current, 900 mV forward voltage at 3 A, and 25 ns reverse recovery time. Both use DO-214AB SMC packaging. The primary difference is regulatory compliance; ES3A-13-F is ROHS3 compliant while ES3A-13 is not.

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

A: Fast recovery diodes have reverse recovery times ≤ 500 ns and are specified for switching applications requiring rapid turn-off. Standard recovery diodes have reverse recovery times > 500 ns and are suitable for lower-frequency rectification. The ES3A-13 is fast recovery (25 ns); alternatives like S3A-E3/57T are standard recovery (2.5 µs).

Q: Are ES3A-E3/57T and ES3A-E3/9AT interchangeable?

A: Yes. Both parts share identical electrical specifications: 50 V reverse voltage, 3 A average rectified current, 900 mV forward voltage at 3 A, and 30 ns reverse recovery time. The difference is packaging format: ES3A-E3/57T is supplied in Tape & Reel; ES3A-E3/9AT is also Tape & Reel. Selection depends on procurement and assembly requirements.

Q: Why is STTH302S not recommended as a substitute?

A: STTH302S has a 200 V reverse voltage rating, which exceeds the 50 V specification of the ES3A-13. While the 3 A current rating and fast recovery characteristics match, using a higher voltage-rated component introduces unnecessary cost and may alter circuit performance characteristics. Direct voltage-matched alternatives are available.

Q: Can I use a higher current-rated diode like SMLJ60S05-TP (6 A) or S10A-TP (10 A)?

A: Higher current ratings do not provide functional equivalence for the ES3A-13 application. These parts are oversized for a 3 A specification and introduce unnecessary cost. Additionally, SMLJ60S05-TP is marked "Not For New Designs" and S10A-TP is obsolete. Use current-matched alternatives.

Q: What is the significance of RoHS compliance in selecting a substitute?

A: RoHS3 compliance indicates the part meets current regulatory requirements for hazardous substance restrictions. The original ES3A-13 is RoHS non-compliant. Selecting ROHS3-compliant alternatives such as ES3A-13-F, ES3A-E3/57T, or ES3A-E3/9AT ensures designs meet modern environmental and regulatory standards.

Q: Does reverse recovery time affect circuit performance?

A: Yes. Reverse recovery time (trr) determines how quickly a diode stops conducting in reverse bias. Shorter recovery times reduce switching losses and electromagnetic interference. The ES3A-13 has 25 ns recovery time. Alternatives with 30 ns (Vishay parts) or 35 ns (Taiwan Semiconductor) introduce minimal performance variation. Standard recovery parts with microsecond-range recovery times are unsuitable for high-frequency switching applications.

Q: Are packaging differences between Cut Tape, Digi-Reel, and Tape & Reel significant?

A: Packaging format affects procurement and assembly processes but not electrical performance. Cut Tape and Digi-Reel are suitable for manual or small-scale assembly; Tape & Reel is standard for automated pick-and-place assembly. Select based on manufacturing process requirements, not electrical compatibility.

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