1N4749A

What is 1N4749A?

1N4749A is a type of diode, known as a Zener diode, that is used to regulate voltage in a circuit. It is a small two-terminal device, typically made from silicon, that is designed to allow current to flow in one direction (forward bias) and to block it in the other direction (reverse bias). When the voltage across the diode exceeds its Zener voltage (Vz), the diode will conduct current in the reverse direction, thereby regulating the voltage in the circuit. The 1N4749A diode has a Zener voltage of 6.8 volts and is capable of handling up to 500mA of current. It is commonly used in power-supply circuits as a voltage regulator, as well as in radio frequency circuits and overvoltage protection circuits.

1N4749A diodes are available in a variety of sizes, including DO-35, DO-41, and SOD-123 packages. They are designed to operate in temperature ranges from -65°C to +150°C, and are characterized by their low noise, low leakage current, and low reverse recovery time. The 1N4749A is an ideal choice for applications such as voltage regulation in automotive, industrial, and consumer electronics.

Overview 1N4749A

• Type: Zener Diode
• Material: Silicon
• Voltage: 6.8V
• Current: 500mA
• Packages: DO-35, DO-41, SOD-123
• Operating Temperature: -65°C to +150°C
• Features: Low Noise, Low Leakage Current, Low Reverse Recovery Time
• Applications: Voltage Regulation in Automotive, Industrial, and Consumer Electronics

How to use 1N4749A?

1N4749A diodes are typically used to regulate voltage in a circuit. When connected between two points in the circuit, the diode should be oriented such that the banded end of the diode is connected to the point of higher voltage. When the voltage across the diode exceeds the Zener voltage (Vz), the diode will conduct current in the reverse direction, thereby regulating the voltage in the circuit. The 1N4749A diode is commonly used in power-supply circuits as a voltage regulator, as well as in radio frequency circuits and overvoltage protection circuits.

Pros & Cons

Pros:
• Low noise
• Low leakage current
• Low reverse recovery time
• Wide operating temperature range
• Can be used in a variety of applications

Cons:
• May require a heat sink for higher power applications
• Higher forward voltage drop than other types of diodes

FAQ

Q: What is the Zener voltage of the 1N4749A diode?

A: The Zener voltage of the 1N4749A diode is 6.8 volts.

Q: What is the maximum current rating of the 1N4749A diode?

A: The maximum current rating of the 1N4749A diode is 500mA.

Q: What size packages are the 1N4749A diode available in?

A: The 1N4749A diode is available in DO-35, DO-41, and SOD-123 packages.

Q: What is the operating temperature range of the 1N4749A diode?

A: The operating temperature range of the 1N4749A diode is -65°C to +150°C.

Conclusion

The 1N4749A diode is a type of Zener diode that is used to regulate voltage in a circuit. It has a Zener voltage of 6.8 volts and is capable of handling up to 500mA of current. It is available in a variety of sizes, including DO-35, DO-41, and SOD-123 packages, and is characterized by its low noise, low leakage current, and low reverse recovery time. The 1N4749A is commonly used in power-supply circuits as a voltage regulator, as well as in radio frequency circuits and overvoltage protection circuits.