The component you’re referring to is the BAT54S , which is a Schottky Diode made by several manufacturers, with the most common being Diodes Incorporated or ON Semiconductor. It's typically used in low-voltage applications for rectification purposes.
Key Information for BAT54S
Package Type: The BAT54S is typically available in a SOT-23 package. The SOT-23 is a small, surface-mount package, usually featuring 3 pins.
Pins Function List:
Pin 1: Anode (A) of the Schottky diode.
Pin 2: Cathode (K) of the Schottky diode.
Pin 3: Anode (A) of the Schottky diode.
This particular diode is usually used for applications where low forward voltage drop and high-speed switching are needed.
Here’s the detailed pin function and FAQ you requested.
Pin Function Table (BAT54S - SOT-23 Package)
Pin Number Pin Name Function Description 1 A (Anode) Anode (1st Diode) The anode is the positive side of the diode, where current enters the diode. 2 K (Cathode) Cathode (Common Cathode) The cathode is the negative side of the diode, where current exits. 3 A (Anode) Anode (2nd Diode) The second anode for the second Schottky diode configuration.Detailed Circuit Principle and Working Description
The BAT54S consists of two Schottky diodes connected in a parallel configuration with a common cathode pin. The diodes are typically used for high-speed switching, protecting circuits from reverse voltages and providing low forward voltage drop.
High-Speed Switching: The BAT54S is capable of fast switching speeds, making it ideal for use in high-frequency applications, like signal processing or protection circuits.
Low Forward Voltage Drop: The Schottky diode features a very low forward voltage drop, typically around 0.3V, which reduces power loss in applications where efficiency is critical.
Common Cathode Configuration: With two anodes and a common cathode, this configuration allows the device to handle bidirectional current or to be used in specific diode protection circuits.
FAQ (Frequently Asked Questions)
Q: What is the maximum forward current for the BAT54S? A: The maximum forward current for the BAT54S is 200mA.
Q: Can I use the BAT54S in high-voltage applications? A: No, the BAT54S is designed for low-voltage applications and has a maximum reverse voltage rating of 30V.
Q: How do I connect the BAT54S in my circuit? A: The anode pins (pin 1 and pin 3) should be connected to the positive voltage, and the cathode pin (pin 2) should be connected to the negative or ground voltage.
Q: What is the typical forward voltage drop for BAT54S? A: The typical forward voltage drop is 0.3V.
Q: What is the power dissipation limit for the BAT54S? A: The BAT54S can dissipate up to 250mW of power.
Q: Is the BAT54S suitable for signal protection? A: Yes, the BAT54S is ideal for protecting circuits from voltage spikes in signal lines.
Q: Can I use the BAT54S for reverse voltage protection? A: Yes, the BAT54S is commonly used for reverse voltage protection in low-voltage circuits.
Q: What is the capacitance value for BAT54S? A: The BAT54S has a typical junction capacitance of 3pF at 0V reverse bias.
Q: What is the operating temperature range for the BAT54S? A: The operating temperature range for the BAT54S is between -55°C and +125°C.
Q: What is the maximum reverse leakage current for the BAT54S? A: The maximum reverse leakage current is 0.1μA at 25°C.
Q: Can the BAT54S be used in automotive applications? A: Yes, the BAT54S can be used in automotive and other low-voltage, high-speed switching applications.
Q: What is the typical rise and fall time for BAT54S? A: The BAT54S has a typical rise and fall time in the order of nanoseconds, making it ideal for fast switching.
Q: Can I use the BAT54S for rectification purposes? A: Yes, the BAT54S is commonly used for rectifying small signals and for low-power applications.
Q: Does the BAT54S have a reverse recovery time? A: The BAT54S has negligible reverse recovery time, which is one of the reasons it’s preferred for high-speed applications.
Q: How do I store the BAT54S? A: Store the BAT54S in a dry environment and avoid exposing it to excessive humidity or extreme temperatures.
Q: Is the BAT54S RoHS compliant? A: Yes, the BAT54S is RoHS compliant, meaning it is free from hazardous materials like lead.
Q: Can I use the BAT54S in a series configuration? A: It’s not recommended to connect BAT54S diodes in series since they are designed for parallel connection with a common cathode.
Q: How do I calculate the current handling capacity of the BAT54S? A: The current handling capacity is limited by the maximum current rating (200mA), and the voltage drop across the diode under operating conditions.
Q: How should I mount the BAT54S? A: The BAT54S should be mounted using surface-mount technology (SMT) on a PCB. Ensure that the soldering is done properly to avoid any shorts.
Q: Can I use the BAT54S for high-current power supplies? A: No, the BAT54S is designed for low-current applications, not for high-current power supplies.
This explanation should give you a detailed understanding of the BAT54S diode, its pinout, working principles, and common queries related to its usage. Let me know if you need further clarification!
