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    [Zener Diode] Current Ratings (IF,IFRM,IZM,IZSM)

    [Zener Diode] Current Ratings (IF,IFRM,IZM,IZSM)

    2023/1/24  

    Regarding the "Current Ratings of Zener Diode", this article will explain the information below. Current Ratings of Zener Diode Continuous Forward Current \(I_F\) Repetitive Peak Forward Current \(I_{FRM}\) Maximum Zener Current \(I_{ZM}\) Non-repetitive Peak Reverse Current \(I_{ZSM}\) Current Ratings of Zener Diode The absolute maximum ratings in the datasheet of a zener diode show the current ratings. The current ratings are listed in the following ways, although the information varies from datasheet to datasheet. Continuous Forward Current \(I_F\) Repetitive Peak Forward Current \(I_{FRM}\) Maximum Zener Current \(I_{ZM}\) Non-repetitive Peak Reverse Current \(I_{ZSM}\) Each current rating is explained in turn below. ...

    [MOSFET] What is Power Dissipation PD?

    [MOSFET] What is Power Dissipation PD?

    2023/1/24  

    Regarding the "Power Dissipation \(P_D\) of MOSFET", this article will explain the information below. Power Dissipation \(P_D\) of MOSFET \(P_D\)-\(T_c\) Characteristics of MOSFET Power Dissipation of MOSFET The power dissipation \(P_D\) of a MOSFET is the power dissipated when the channel temperature \(T_{ch}\) reaches the absolute maximum rating. The symbol for power dissipation depends on the datasheet, but it is often expressed as \(P_D\), \(P_d\), \(P_T\), \(P_{tot}\), or \(P\). In the case of "packages to which a heat sink can be attached such as TO-220" or "packages that allow backside heat dissipation such as TO-252", the power dissipation \(P_D\) listed ...

    [Zener Diode] What is Power Dissipation Pd?

    [Zener Diode] What is Power Dissipation Pd?

    2023/1/24  

    Regarding the "Power Dissipation \(P_d\) of Zener Diode", this article will explain the information below. Power Dissipation \(P_d\) of Zener Diode \(P_d\)-\(T_a\) Characteristics of Zener Diode Power Dissipation of Zener Diode The power dissipation \(P_d\) of a zener diode is the power dissipated when the junction temperature \(T_j\) reaches the absolute maximum rating. The symbol for power dissipation depends on the datasheet, but it is often expressed as \(P_d\), \(P_T\), \(P_{tot}\), or \(P\). The power dissipation \(P_d\) listed on the datasheet is based on the ambient temperature \(T_a=25\mathrm{^{\circ}C}\). Therefore, the power consumption when the junction temperature \(T_j\) reaches the absolute ...

    [Zener Diode] What is Resistance Rz (Impedance Zz)

    [Zener Diode] What is Resistance Rz (Impedance Zz)?

    2023/1/24  

    This article explains "Resistance (Impedance) of Zener Diode". In the zener diode, when the zener current \(I_Z\) changes, the zener voltage \(V_Z\) changes slightly. The slope of the Zener voltage \(V_Z\) and the Zener current \(dV_Z/dI_Z\) is called the resistance (or impedance) of zener diode. Now, I will explain "Resistance (Impedance) of Zener Diode" in detail using diagrams. Resistance (Impedance) of Zener Diode The above figure shows the "Zener current \(I_Z\)-Zener voltage \(V_Z\) characteristic" of the zener diode. Ideally, the zener voltage \(V_Z\) of the zener diode should remain constant even when the zener current \(I_Z\) changes. In reality, however, ...

    Temperature Coefficient of Zener Diode

    Temperature Coefficient of Zener Diode

    2023/1/24  

    Regarding the temperature coefficient of zener diode: This article will explain the information below. Characteristics of Temperature Coefficient of Zener Diode Method of Temperature Compensation of Zener Diode Characteristics of Temperature Coefficient of Zener Diode The zener voltage of a zener diode varies with temperature. Depending on the magnitude of the zener voltage, a zener diode may have a positive or negative temperature coefficient. Those with a Zener voltage higher than around 5V have a positive temperature coefficient, so the zener voltage increases as the temperature rises. On the other hand, those whose zener voltage is lower than around 5V ...

    [Zener Diode] What is Reverse Current (Leakage Current)?

    [Zener Diode] What is Reverse Current (Leakage Current)?

    2023/1/24  

    The reverse current in a zener diode is the current that flows in a minute amount when a reverse voltage is applied. Regarding the reverse current in a zener diode: This article will explain the information below. Reverse Current of Zener Diodes How reverse current is described on the datasheet Reverse Current (Leakage Current) of Zener Diode The above figure shows the "current-voltage characteristic" of a zener diode. In the "current-voltage characteristic," the horizontal axis represents the voltage applied to the zener diode and the vertical axis represents the current flowing through the zener diode. When the reverse voltage (the ...

    Types of Resistors

    Types of Resistors

    2022/11/17  

    There are many different types of resistors. Regarding the Resistor, this article will explain the information below. Types of ResistorsCharacteristics of each resistance (advantages and disadvantages, etc.) Types of Resistors There are many types of resistors, which can be classified mainly according to their characteristics and materials as shown in the figure above. The resistors that are very inexpensive and most widely used are carbon film resistors. In addition, metal plate resistors with low resistance, high power (several watts), and small inductance are used to detect the current flowing in a circuit. The following is a detailed explanation of each ...

    RL Parallel Circuit (Admittance, Phasor Diagram)

    RL Parallel Circuit (Admittance, Phasor Diagram)

    2022/11/13  

    Regarding the RL parallel circuit, this article will explain the information below. Equation, magnitude, vector diagram, and admittance phase angle of RL parallel circuit admittance Admittance of the RL parallel circuit An RL parallel circuit is an electrical circuit consisting of a resistor \(R\) and an inductor \(L\) connected in parallel, driven by a voltage source or current source. The impedance \({\dot{Z}}_R\) of the resistor \(R\) and the impedance \({\dot{Z}}_L\) of the inductor \(L\) can be expressed by the following equations: \begin{eqnarray}{\dot{Z}_R}&=&R\tag{1}\\\\{\dot{Z}_L}&=&jX_L=j{\omega}L\tag{2}\end{eqnarray} , where \({\omega}\) is the angular frequency, which is equal to \(2{\pi}f\), and \(X_L\left(={\omega}L\right)\) is called inductive reactance, ...

    RC Parallel Circuit (Admittance, Phasor Diagram)

    RC Parallel Circuit (Admittance, Phasor Diagram)

    2022/11/13  

    Regarding the RC parallel circuit, this article will explain the information below. Equation, magnitude, vector diagram, and admittance phase angle of RC parallel circuit admittance Admittance of the RC parallel circuit An RC parallel circuit is an electrical circuit consisting of a resistor \(R\) and a capacitor \(C\) connected in parallel, driven by a voltage source or current source. The impedance \({\dot{Z}}_R\) of the resistor \(R\) and the impedance \({\dot{Z}}_C\) of the capacitor \(C\) can be expressed by the following equations: \begin{eqnarray}{\dot{Z}_R}&=&R\tag{1}\\\\{\dot{Z}_C}&=&-jX_C=-j\frac{1}{{\omega}C}=\frac{1}{j{\omega}C}\tag{2}\end{eqnarray} , where \({\omega}\) is the angular frequency, which is equal to \(2{\pi}f\), and \(X_C\left(=\displaystyle\frac{1}{{\omega}C}\right)\) is called capacitive reactance, ...

    LC Parallel Circuit (Admittance, Phasor Diagram)

    LC Parallel Circuit (Admittance, Phasor Diagram)

    2022/11/13  

    Regarding the LC parallel circuit, this article will explain the information below. Equation, magnitude, vector diagram, and admittance phase angle of LC parallel circuit admittance Admittance of the LC parallel circuit An LC parallel circuit is an electrical circuit consisting of an inductor \(L\) and a capacitor \(C\) connected in parallel, driven by a voltage source or current source. The impedance \({\dot{Z}}_L\) of the inductor \(L\) and the impedance \({\dot{Z}}_C\) of the capacitor \(C\) can be expressed by the following equations: \begin{eqnarray}{\dot{Z}}_L&=&jX_L=j{\omega}L\tag{1}\\\\{\dot{Z}}_C&=&-jX_C=-j\frac{1}{{\omega}C}=\frac{1}{j{\omega}C}\tag{2}\end{eqnarray} , where \({\omega}\) is the angular frequency, which is equal to \(2{\pi}f\), and \(X_L\left(={\omega}L\right)\) is called inductive reactance, ...