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To clarify, " BSS123LT1G " is a specific part number for a N-channel MOSFET made by ON Semiconductor. If you are looking for detailed specifications, pin functions, and instructions for a specific packaging type, I can give you a general overview based on the part number.
BSS123LT1G is typically found in a SOT-23 package (a small, surface-mount package with 3 pins), which is commonly used for transistor s, MOSFETs , and similar components.General Pin Function for the BSS123LT1G (SOT-23 Package):
Pin 1 (Gate): The gate terminal controls the operation of the MOSFET. Applying a voltage to the gate relative to the source allows current to flow between the drain and source. Pin 2 (Drain): The drain is the current output of the MOSFET. When the gate is activated, current flows from the drain to the source. Pin 3 (Source): The source is where the current enters the MOSFET. It is the reference point for the gate voltage.Key Specifications:
Drain-Source Voltage (Vds): 50V Gate Threshold Voltage (Vgs(th)): 1.3V – 3.5V Continuous Drain Current (Id): 0.3A Power Dissipation (Ptot): 0.4WPackaging:
As mentioned, the SOT-23 package typically has 3 pins:
Pin 1 (Gate) Pin 2 (Drain) Pin 3 (Source)Usage Instructions:
The Gate (Pin 1) must receive the voltage above the threshold value to enable the MOSFET to conduct. Below this value, it remains off. The Drain (Pin 2) is where the load is connected, and the current flows from Drain to Source when the MOSFET is turned on. The Source (Pin 3) is typically connected to ground in a switching application, completing the circuit.Example Pin Function Table for the BSS123LT1G:
Pin Description Functionality 1 Gate Controls the switch between Drain and Source 2 Drain Current flows out of the MOSFET when it is on 3 Source Current flows into the MOSFET when it is on20 Frequently Asked Questions (FAQs)
What is the function of the Gate in BSS123LT1G? The Gate (Pin 1) controls the conduction of current between the Drain and Source by applying a voltage relative to the Source. What happens when the Gate voltage exceeds the threshold for BSS123LT1G? When the Gate voltage exceeds the threshold voltage, the MOSFET starts conducting between Drain and Source. What is the maximum voltage rating for the BSS123LT1G? The maximum drain-to-source voltage is 50V. What is the typical Gate threshold voltage of the BSS123LT1G? The Gate threshold voltage is between 1.3V and 3.5V. What is the typical current rating for the BSS123LT1G? The continuous drain current rating is typically 0.3A. How should the Source pin be connected in a circuit? The Source (Pin 3) is typically connected to the ground in a switching application. What is the SOT-23 package size for BSS123LT1G? The BSS123LT1G comes in a small SOT-23 surface-mount package, which has 3 pins. Can the BSS123LT1G be used in high-power applications? The BSS123LT1G is not suitable for high-power applications since its maximum power dissipation is 0.4W. How do I switch the BSS123LT1G on? To switch the BSS123LT1G on, apply a voltage to the Gate that is higher than the threshold voltage (Vgs(th)).What happens if the Gate voltage is lower than the threshold voltage?
If the Gate voltage is lower than the threshold voltage, the MOSFET remains off, and no current flows between Drain and Source.What is the maximum Gate voltage for BSS123LT1G?
The maximum Gate-source voltage (Vgs) is ±20V.What is the drain-to-source resistance (Rds(on)) for the BSS123LT1G?
The Rds(on) is low when the MOSFET is on, typically around 0.5Ω.What is the purpose of the Drain pin in BSS123LT1G?
The Drain (Pin 2) is the output terminal, where current exits the MOSFET when it is turned on.Is there a need for a current-limiting resistor with the BSS123LT1G?
Yes, a current-limiting resistor may be needed to protect the MOSFET from excessive current.Can the BSS123LT1G handle inductive loads?
Care should be taken when driving inductive loads, as inductive spikes can damage the MOSFET.Can the BSS123LT1G be used in a low-voltage circuit?
Yes, the BSS123LT1G is ideal for low-voltage circuits as it operates with a Gate threshold voltage of 1.3V to 3.5V.What is the maximum temperature rating for BSS123LT1G?
The maximum junction temperature is 150°C.What is the main application for BSS123LT1G?
It is commonly used in switching and amplification applications in low-voltage digital circuits.How does the BSS123LT1G differ from other MOSFETs?
The BSS123LT1G is a small, low-power N-channel MOSFET with a low Gate threshold voltage.Is the BSS123LT1G suitable for automotive applications?
The BSS123LT1G is not designed for automotive applications due to its relatively low power handling capabilities.I hope this helps! Feel free to ask if you need further information on this part or any other components.
