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Nathan Green
Nathan Green
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What are the technical specifications of the SR3100?

Nov 13, 2025

Hey there! As a supplier of the SR3100, I'm super stoked to spill the beans on its technical specs. Whether you're an electronics enthusiast, a professional engineer, or just someone looking to learn more about this nifty device, you're in the right place. So, let's dive right in!

1. Basics of the SR3100

The SR3100 is a Schottky diode, which is a type of semiconductor diode known for its low forward voltage drop and fast switching speeds. These features make it ideal for a wide range of applications, from power supplies to solar panels.

2. Key Technical Specifications

2.1 Forward Current (IF)

The SR3100 can handle a maximum continuous forward current (IF) of 3A. This means it can carry up to 3 amperes of current in the forward direction without getting too hot or breaking down. For many low - to medium - power applications, this is more than enough. For example, in a small power supply circuit, it can efficiently handle the current required to power small electronic components.

2.2 Peak Forward Surge Current (IFSM)

When it comes to short - term surges, the SR3100 can handle a peak forward surge current (IFSM) of 100A. This is important because in real - world scenarios, there can be sudden spikes in current, like when a device is first turned on. The ability to handle these surges ensures the diode won't be damaged during these transient events.

2.3 Reverse Voltage (VR)

The maximum reverse voltage (VR) that the SR3100 can withstand is 100V. Reverse voltage is the voltage applied in the opposite direction of the normal current flow. If this voltage is exceeded, the diode may start to conduct in the reverse direction, which can lead to damage. So, it's crucial to make sure that in your circuit, the reverse voltage doesn't go above 100V.

2.4 Forward Voltage Drop (VF)

One of the most significant advantages of the SR3100 is its low forward voltage drop. At a forward current of 3A, the forward voltage drop (VF) is typically around 0.55V. A low forward voltage drop means less power is wasted as heat. In power - sensitive applications, this can lead to increased efficiency. For instance, in a solar panel system, a lower forward voltage drop in the diode means more of the power generated by the solar panels can be used to charge the batteries or power the load. You can learn more about solar panel diodes here.

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2.5 Reverse Leakage Current (IR)

The reverse leakage current (IR) of the SR3100 is very low. At a reverse voltage of 100V and a temperature of 25°C, the reverse leakage current is typically around 10μA. A low reverse leakage current means that very little current flows in the reverse direction when the diode is supposed to be blocking. This is important for maintaining the integrity of the circuit and reducing power consumption.

2.6 Operating Temperature Range

The SR3100 can operate within a temperature range of - 65°C to + 125°C. This wide temperature range makes it suitable for use in various environments, from extremely cold to relatively hot conditions. Whether it's used in a freezer or an industrial setting with high - temperature machinery, the SR3100 can still perform reliably.

3. Package and Dimensions

The SR3100 usually comes in a DO - 201AD package. This is a common package for diodes, and it has standard dimensions. The package is designed to be easy to mount on printed circuit boards (PCBs). It also provides good thermal dissipation, which helps in keeping the diode cool during operation.

4. Comparison with Similar Diodes

It's always a good idea to compare the SR3100 with other similar diodes on the market. For example, the SR5100 can handle a higher forward current of 5A compared to the SR3100's 3A. However, if your application doesn't require such a high current, the SR3100 can be a more cost - effective choice.

Another popular diode is the 1N5822. The 1N5822 has a lower reverse voltage rating of 40V compared to the SR3100's 100V. So, if your circuit requires a higher reverse voltage tolerance, the SR3100 would be a better option.

5. Applications

The SR3100's technical specifications make it suitable for a variety of applications:

5.1 Power Supplies

In power supplies, the SR3100 can be used as a rectifier diode. Its low forward voltage drop helps in reducing power losses and increasing the overall efficiency of the power supply. It can convert alternating current (AC) to direct current (DC) while minimizing heat generation.

5.2 Solar Panel Systems

As mentioned earlier, in solar panel systems, the SR3100 can be used to prevent reverse current flow from the batteries back to the solar panels at night. Its low forward voltage drop ensures that most of the power generated by the solar panels is utilized effectively.

5.3 Battery Charging Circuits

In battery charging circuits, the SR3100 can be used to control the flow of current. It can prevent the battery from discharging back into the charging circuit when the charger is turned off.

6. Why Choose Our SR3100?

As a supplier, we take pride in providing high - quality SR3100 diodes. Our products are rigorously tested to ensure they meet or exceed the specified technical requirements. We also offer competitive pricing and excellent customer service. Whether you need a small quantity for a hobby project or a large order for an industrial application, we've got you covered.

If you're interested in purchasing the SR3100 or have any questions about its technical specifications, feel free to reach out to us. We're here to help you make the right choice for your project. Don't miss out on the opportunity to use a reliable and efficient Schottky diode in your next circuit!

References

  • Datasheet of SR3100
  • General knowledge of Schottky diodes in electronics textbooks