SS34 | Review | Specs | Diode Fairchild Semiconductor
- Voltage-DCReverse(Vr)(Max): 40 V
- Current-AverageRectified(Io): 3A
- Voltage-Forward(Vf)(Max)@If: 500 mV @ 3 A
- Package: DO-214AB, SMC

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SS34 Schottky Diode
At Kasuo Electronics Technology, we offer the SS34 Schottky Diode, a reliable and efficient component for various electronic applications. The SS34 is designed with a low forward voltage drop and high-speed switching capabilities, making it ideal for power rectification and high-efficiency circuits.
Key Features of the SS34 Diode:
Type: Schottky Diode
Forward Voltage: 0.4V
Maximum Reverse Voltage: 40V
Current Rating: 3A
Package Type: DO-214AC (SMA)
Fast Switching Time: Low reverse recovery time
Low Power Loss: Efficient performance in power conversion systems
We ensure the highest standards of quality control at Kasuo Electronics Technology. Before shipment, each SS34 diode undergoes thorough quality testing to ensure it meets the strictest performance specifications. Additionally, we provide detailed testing reports, offering peace of mind that the components you receive are of the highest quality.
SS34 Pinout

The SS34 has two pins: the anode pin and the cathode pin, which are clearly marked for easy identification. The anode pin is positive and the cathode pin is negative. This diode is designed to provide efficient rectification of circuits and is particularly suitable for low voltage, high frequency applications.
| Pin Number | Pin Name | Function |
|---|---|---|
| 1 | Cathode | Negative side |
| 2 | Anode | Positive side |
The SS34 Schottky diode has a simple pinout, with the cathode on pin 1 and the anode on pin 2. This configuration allows for efficient current flow and quick response in power and signal applications.
SS34 Equivalent
This is a table of ss34 and other types of components that are packaged consistently and can be substituted for each other
| Picture | Model | Manufacturer | Reverse Voltage (V) | Forward Current (A) | Package Type | Key Features |
|---|---|---|---|---|---|---|
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SS34 | Fairchild Semiconductor | 40 | 3 | DO-214AC | Schottky diode, low forward voltage drop |
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MBR340 | ON Semiconductor | 40 | 3 | DO-214AC | Schottky rectifier diode |
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BAT54C | NXP Semiconductors | 30 | 0.3 | DO-214AC | Small signal Schottky diode |
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1N5819 | ON Semiconductor | 40 | 1 | DO-214AC | Schottky diode, general-purpose |
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MBR120 | ON Semiconductor | 30 | 1 | DO-214AC | Schottky diode, low forward voltage drop |
Note:
Reverse Voltage: Most models in this list have a reverse voltage of 40V, except for the BAT54C and MBR120, which have a lower reverse voltage of 30V.
Forward Current: The SS34 and MBR340 can handle 3A, while the BAT54C and MBR120 handle less current (0.3A and 1A, respectively).
Key Features: The BAT54C is better suited for small-signal applications, while the 1N5819 and MBR120 are good choices for general-purpose and low-current applications. The SS34 and MBR340 are better for power applications with higher current handling.
This list includes a broader range of options, some of which may offer higher current handling or different reverse voltage specifications but share the same DO-214AC package type, making them interchangeable in many designs.














