ES3E Equivalent & Substitute Parts Reference

Part Overview

The ES3E is a general-purpose rectifier diode rated for 300 V DC reverse voltage and 3 A average rectified current, manufactured by SMC Diode Solutions in the DO-214AB (SMC) surface mount package. This diode is classified as obsolete, which necessitates identification of active equivalent alternatives for ongoing design and procurement requirements. The ES3E features fast recovery characteristics with a reverse recovery time of 35 nanoseconds, making it suitable for applications requiring rapid switching performance in rectification circuits.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	300	V
Current - Average Rectified (Io)	3	A
Voltage - Forward (Vf) (Max) @ If	1.25 @ 3 A	V
Reverse Recovery Time (trr)	35	ns
Current - Reverse Leakage @ Vr	5	µA @ 300 V
Capacitance @ Vr, F	45	pF @ 4V, 1MHz
Package / Case	DO-214AB, SMC	—
Operating Temperature - Junction	-55 to 150	°C
Mounting Type	Surface Mount	—
Technology	Standard	—

Substitute Part Grouping Explanation

Substitution of the obsolete ES3E diode is determined by strict equivalence across the following critical electrical and mechanical parameters:

Mandatory Equivalence Criteria:

Voltage - DC Reverse (Vr) (Max): 300 V
Current - Average Rectified (Io): 3 A
Voltage - Forward (Vf) (Max) @ If: 1.25 V @ 3 A
Reverse Recovery Time (trr): 35 ns
Package / Case: DO-214AB, SMC
Mounting Type: Surface Mount
Technology: Standard

Acceptable Variation Parameters:

Current - Reverse Leakage @ Vr: Equal or lower values are acceptable
Capacitance @ Vr, F: Minor variations within ±10% are acceptable
Operating Temperature - Junction: Extended ranges are acceptable
Packaging Format: Tape & Reel (TR) is compatible with the original surface mount application

Three active substitute parts meet these equivalence criteria and are available in production inventory.

Parameter Comparison

Parameter	ES3E (Main)	ER3E	ER3E_R1_00001	ES3EC-HF
Manufacturer	SMC Diode Solutions	SMC Diode Solutions	Panjit International Inc.	Comchip Technology
Product Status	Obsolete	Active	Active	Active
Voltage - DC Reverse (Vr) (Max)	300 V	300 V	300 V	300 V
Current - Average Rectified (Io)	3 A	3 A	3 A	3 A
Voltage - Forward (Vf) (Max) @ If	1.25 V @ 3 A	1.25 V @ 3 A	1.25 V @ 3 A	1.25 V @ 3 A
Reverse Recovery Time (trr)	35 ns	35 ns	35 ns	35 ns
Current - Reverse Leakage @ Vr	5 µA @ 300 V	5 µA @ 300 V	1 µA @ 300 V	5 µA @ 300 V
Capacitance @ Vr, F	45 pF @ 4V, 1MHz	45 pF @ 4V, 1MHz	45 pF @ 4V, 1MHz	40 pF @ 4V, 1MHz
Package / Case	DO-214AB, SMC	DO-214AB, SMC	DO-214AB, SMC	DO-214AB, SMC
Operating Temperature - Junction	-55 to 150 °C	-65 to 150 °C	-55 to 150 °C	-55 to 150 °C
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Packaging Format	—	Tape & Reel (TR)	Tape & Reel (TR)	Tape & Reel (TR)
RoHS Status	—	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Inventory Status	625 Pcs New Original In Stock	5800 Pcs New Original In Stock	1492 Pcs New Original In Stock	1000 Pcs New Original In Stock

Engineering Selection Recommendations

All three substitute parts—ER3E, ER3E_R1_00001, and ES3EC-HF—are electrically and mechanically equivalent to the obsolete ES3E and are suitable for direct replacement in applications requiring a 300 V, 3 A general-purpose rectifier diode in the DO-214AB surface mount package.

ER3E (SMC Diode Solutions): This part maintains manufacturer continuity with the original ES3E, as both are produced by SMC Diode Solutions. The ER3E is active in production with the highest inventory availability (5800 units). It provides an extended operating temperature range (-65 to 150 °C) compared to the original specification. RoHS3 compliance is confirmed. This part is the preferred choice for applications requiring manufacturer consistency and maximum supply security.

ER3E_R1_00001 (Panjit International Inc.): This parametric equivalent from Panjit International Inc. offers superior reverse leakage characteristics (1 µA @ 300 V versus 5 µA), resulting in lower leakage current performance. The part is RoHS3 compliant and REACH unaffected. Operating temperature range matches the original specification (-55 to 150 °C). This part is suitable for applications where minimized reverse leakage current provides performance benefits.

ES3EC-HF (Comchip Technology): This part from Comchip Technology provides equivalent electrical performance with a marginally lower capacitance value (40 pF versus 45 pF), which may offer slight advantages in high-frequency switching applications. The part is RoHS3 compliant with confirmed inventory availability (1000 units). Operating temperature range matches the original specification.

Selection among these three parts should be based on procurement availability, supply chain preferences, and any specific performance requirements related to reverse leakage current or capacitance characteristics.

Frequently Asked Questions (FAQ)

Q: Can the ER3E directly replace the obsolete ES3E in existing designs?

A: Yes. The ER3E is a direct functional equivalent with identical electrical ratings (300 V, 3 A, 35 ns recovery time) and the same DO-214AB surface mount package. The extended temperature range (-65 to 150 °C) provides additional operational margin. No circuit modifications are required.

Q: What is the difference between ER3E_R1_00001 and the other substitutes?

A: The ER3E_R1_00001 from Panjit International Inc. has lower reverse leakage current (1 µA @ 300 V) compared to 5 µA in the ES3E, ER3E, and ES3EC-HF. This lower leakage may be beneficial in applications sensitive to standby current or requiring minimal reverse bias leakage. All other electrical parameters are identical.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All three substitute parts—ER3E, ER3E_R1_00001, and ES3EC-HF—are confirmed RoHS3 compliant, meeting current environmental and regulatory requirements.

Q: Does the Tape & Reel (TR) packaging of substitutes affect compatibility?

A: No. Tape & Reel packaging is a standard format for surface mount components and is fully compatible with automated assembly equipment. The DO-214AB package geometry and electrical interface remain identical to the original ES3E.

Q: Which substitute part has the best inventory availability?

A: The ER3E from SMC Diode Solutions has the highest inventory availability with 5800 units in stock, followed by ES3EC-HF (1000 units) and ER3E_R1_00001 (1492 units).

Q: Can I use ES3EC-HF if the ER3E is unavailable?

A: Yes. The ES3EC-HF from Comchip Technology is a full parametric equivalent with the same voltage, current, and recovery time ratings. The 5 pF lower capacitance (40 pF versus 45 pF) is within acceptable variation and may provide marginal benefits in certain switching applications.

Q: What is the significance of the 35 ns reverse recovery time?

A: The 35 ns reverse recovery time classifies this diode as a fast recovery rectifier, enabling rapid switching transitions. All substitute parts maintain this specification, ensuring equivalent performance in high-frequency rectification and switching applications.

Q: Are there any REACH or ECCN compliance differences among the substitutes?

A: The ER3E and ES3EC-HF are REACH affected and REACH unaffected respectively, while ER3E_R1_00001 is REACH unaffected. All parts carry the same ECCN classification (EAR99). Compliance requirements should be verified against specific end-use and export destination regulations.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message