LL4148

The LL4148 from Changzhou Starsea Elec is a small-signal diode that is widely used in various electronic applications due to its reliability and efficiency. This diode is designed to handle moderate current levels and is particularly effective in switching and rectification tasks.

Physical Characteristics: The LL4148 typically comes in a DO-35 glass package, which is cylindrical in shape and has a transparent appearance. The diode is relatively compact, with a length of about 3.6 mm and a diameter of approximately 1.5 mm. The leads are made of metal and are designed for easy soldering onto printed circuit boards (PCBs). The diode's body is marked with a part number and polarity indicators to ensure correct installation.

Electrical Specifications:

• Maximum Reverse Voltage (VR): The LL4148 can withstand a maximum reverse voltage of around 100 volts, making it suitable for a variety of applications where voltage spikes may occur.
• Forward Current (IF): It can handle a forward current of up to 1 ampere, which is adequate for many low to moderate power applications.
• Forward Voltage Drop (VF): The forward voltage drop is typically around 0.7 volts at a forward current of 1 ampere, which is relatively low, contributing to its efficiency.
• Reverse Recovery Time (trr): The LL4148 features a fast reverse recovery time, usually in the range of 4 nanoseconds, making it ideal for high-speed switching applications.

Applications: The LL4148 is commonly used in:

• Signal detection and processing circuits
• Clamping and protection circuits
• Rectification in power supplies
• Switching applications in digital circuits
• General-purpose diode applications in consumer electronics

Performance Characteristics: The LL4148 is known for its excellent temperature stability and reliability, with a wide operating temperature range typically from -55°C to +150°C. This makes it suitable for use in various environments, including automotive and industrial applications.

In summary, the LL4148 from Changzhou Starsea Elec is a versatile and efficient small-signal diode that is well-suited for a range of electronic applications, characterized by its compact size, reliable performance, and robust electrical specifications.