ES3J | Diode | Datasheet | PDF onsemi
- Voltage-DCReverse(Vr)(Max): 600 V
- Current-AverageRectified(Io): 3A
- Voltage-Forward(Vf)(Max)@If: 1.7 V @ 3 A
- Package: DO-214AB, SMC

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WEET Ultra Fast Recovery Rectifiers Fast Recovery Rectifiers DO-27 SF51G THRU SF58G SMA ER2A – ER2J
ES3J 600v fast recovery diode
The ES3J is a surface-mounted fast recovery diode, mainly used in circuits like high-frequency switching power supplies, rectifier circuits, and freewheeling protection. It has a maximum reverse voltage of up to 600V and can handle currents up to 3A. Its main advantage is the quick recovery time, which reduces energy losses during switching, making it highly efficient for electronic devices where performance matters. Overall, it’s a reliable and practical component.
ES3J pinout

| Pin Number | Pin Name | Description |
| 1 | Cathode (-) | Negative terminal; usually connects to load or output side. |
| 2 | Anode (+) | Positive terminal; usually connects to input or power side. |
Note: ES3J is a standard diode in a two-pin DO-214AB (SMB) package. One pin is the anode (positive terminal), and the other is the cathode (negative terminal). Always pay attention to the diode’s polarity to avoid damaging the component or causing circuit malfunction.
ES3J diode Equivalent

ES3J is an ultra-fast recovery diode with a rating of 600V and 3A, packaged in a DO-214AB (SMC) format, commonly used in high-frequency rectification, switching power supplies, and freewheeling protection circuits.Below is a comparison table of ES3J and several suitable alternative models with similar parameters and packaging:
| Model | Package | Avg. Rectified Current (IF(AV)) | Max Reverse Voltage (VRRM) | Forward Voltage Drop (VF @ 3A) | Reverse Recovery Time (trr) | Surge Current (IFSM) | Remarks |
| ES3J | DO-214AB (SMC) | 3A | 600V | 1.7V | 35ns | 100A | Original model |
| RS3J | DO-214AB (SMC) | 3A | 600V | 1.7V | 35ns | 100A | Identical parameters, direct replacement for ES3J |
| SF31 | DO-214AB (SMC) | 3A | 600V | 1.7V | 35ns | 100A | Alternative provided by GOOD-ARK |
| ES3J (Diotec) | DO-214AB (SMC) | 3A | 600V | 1.5V | 35ns | 115A | Lower forward voltage, higher surge current capability |
| ES3J (Yangjie) | DO-214AB (SMC) | 3A | 600V | 1.7V | 35ns | 100A | Reliable domestic brand, good price-performance ratio |
ES3J VS ES3D

The ES3J diode is commonly used in high-frequency switching power supplies, rectifier circuits, and freewheeling protection circuits. Its key advantage is its fast recovery time, which helps reduce switching losses and boosts overall circuit efficiency. It’s particularly suitable for applications in consumer electronics, industrial equipment, and automotive electronics, where high performance, stability, and reliability are essential.
| Parameter | ES3J | ES3D |
| Package | DO-214AB (SMC) | DO-214AB (SMC) |
| Maximum Reverse Voltage (VRRM) | 600 V | 200 V |
| Average Rectified Current (IF(AV)) | 3 A | 3 A |
| Forward Voltage Drop (VF @ 3A) | 1.7 V (typical) | 0.95 V (typical) |
| Reverse Recovery Time (trr) | 35 ns | 35 ns |
| Surge Current (IFSM) | 100 A | 100 A |
| Operating Temperature | -55°C to +150°C | -55°C to +150°C |
The primary differences between ES3J and ES3D lie in their maximum reverse voltage and forward voltage drop:
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ES3J features a higher voltage rating (600V), making it suitable for high-voltage applications.
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ES3D has a lower reverse voltage rating (200V) but a lower forward voltage drop (0.95V), offering greater efficiency for medium- to low-voltage applications where minimizing power loss is essential.









