SVITIDLAIMEX electrical components Germany SVITIDLAIMEX model SVITIDLAIMEX price

SVITIDLAIMEX electrical component is a varactor diode, also known as a "variable reactance diode," which is made using the characteristic that the junction capacitance of a PN junction changes with the applied voltage when reverse-biased. As the reverse bias voltage increases, the junction capacitance decreases; conversely, the junction capacitance increases. The capacitance of a varactor diode is generally small, with a maximum value ranging from tens of pF to hundreds of pF. It is mainly used in high-frequency circuits for automatic tuning, frequency modulation, and phase adjustment, such as serving as a variable capacitor in the tuning circuit of a television receiver. The main parameters are: zero-bias junction capacitance, zero-bias quality factor, reverse breakdown voltage, center reverse bias voltage, nominal capacitance, capacitance variation range (in picofarads), and cutoff frequency.

SVITIDLAIMEX electrical component characteristics

The most important characteristic of a diode is its unidirectional conductivity. In a circuit, current can only flow into the anode of the diode and out of the cathode. 1. Forward characteristics: In an electronic circuit, when the anode of the diode is connected to a high potential terminal and the cathode to a low potential terminal, the diode will conduct. This connection method is called forward bias. It must be noted that when the forward voltage applied across the diode is very small, the diode still cannot conduct, and the forward current flowing through the diode is very weak. Only when the forward voltage reaches a certain value can the diode truly conduct. After conduction, the voltage across the diode remains basically unchanged, which is called the "forward voltage drop" of the diode. 10. Reverse characteristics In an electronic circuit, when the anode of the diode is connected to a low potential terminal and the cathode to a high potential terminal, almost no current flows through the diode, and the diode is in a cutoff state. This connection method is called reverse bias. When the diode is reverse-biased, there will still be a weak reverse current flowing through the diode, called leakage current. When the reverse voltage across the diode increases to a certain value, the reverse current will increase sharply, and the diode will lose its unidirectional conductivity characteristic. This state is called diode breakdown. The injection current of a laser diode must be greater than the critical current density to satisfy the population inversion condition and emit laser light. The critical current density is related to the junction temperature and indirectly affects efficiency. During high-temperature operation, the critical current increases, efficiency decreases, and components may even be damaged.

SVITIDLAIMEX electrical component parameters

1. Stabilized voltage refers to the stable voltage value generated across the terminals when the Zener diode passes the rated current. This value changes slightly with different operating currents and temperatures. Due to differences in manufacturing processes, the stabilized voltage values of Zener diodes of the same model are not completely consistent. 2. Reverse leakage current refers to the current value passing through the Zener diode when it generates a stable voltage. Below this value, although the Zener diode can still stabilize voltage, the stabilization effect will deteriorate; above this value, as long as the rated power loss is not exceeded, it is allowed, and the stabilization performance will be better, but it will consume more electrical energy. 3. Dynamic resistance refers to the ratio of the change in voltage across the Zener diode to the change in current. This ratio changes with different operating currents; generally, the larger the operating current, the smaller the dynamic resistance. 4. Rated power consumption is determined by the allowable temperature rise of the chip, and its value is the product of the stabilized voltage and the maximum allowable current. 5. Temperature coefficient: If the temperature of the Zener diode changes, its stabilized voltage will also undergo slight changes. The relative change in voltage across the tube caused by a temperature change of 1℃ is the temperature coefficient (unit: %/℃). Generally speaking, if the stabilized voltage is lower than 6V, it belongs to Zener breakdown, and the temperature coefficient is negative; the temperature coefficient is positive. When the temperature rises, the depletion layer decreases. In the depletion layer, the valence electrons of atoms rise to higher energy levels, and a smaller electric field strength can excite valence electrons from atoms to produce Zener breakdown, so its temperature coefficient is negative. Avalanche breakdown occurs when the depletion layer is wider and the electric field strength is lower. An increase in temperature increases the vibration amplitude of lattice atoms, hindering the movement of carriers. In this case, only by increasing the reverse voltage can avalanche breakdown occur, so the voltage temperature coefficient of avalanche breakdown is positive. For occasions with high requirements for power supply, two Zener diodes with opposite temperature coefficients can be connected in series for compensation. Due to mutual compensation, the temperature coefficient is greatly reduced. 8. Reverse leakage current refers to the leakage current generated by the Zener diode under the specified reverse voltage.

SVITIDLAIMEX electrical component classification

Ordinary power supplies can be subdivided into: switching power supplies, inverter power supplies, AC stabilized power supplies, DC stabilized power supplies, DC/DC power supplies, communication power supplies, module power supplies, variable frequency power supplies, UPS power supplies, EPS emergency power supplies, purification power supplies, PC power supplies, rectifier power supplies, custom power supplies, heating power supplies, welding power supplies/arc power supplies, electroplating power supplies, network power supplies, power operation power supplies, adapter power supplies, linear power supplies, power controllers/drivers, power power supplies, other ordinary power supplies, parameter power supplies, voltage-regulating power supplies, transformer power supplies. Special power supplies can be subdivided into: shore power supplies, security power supplies, high-voltage power supplies, medical power supplies, military power supplies, aerospace power supplies, laser power supplies, other special power supplies.

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