100022798 in stock German 100022798 electrical components 100022798 inventory

100022798 electrical components are Zener diodes manufactured to provide voltage regulation by utilizing the PN junction reverse breakdown state, a phenomenon where current can vary over a wide range while voltage remains essentially constant. This diode is a semiconductor device that exhibits high resistance up to the critical reverse breakdown voltage. At this critical breakdown point, the reverse resistance drops to a very low value; in this low-resistance region, current increases while voltage remains constant. Zener diodes are graded according to their breakdown voltage. Due to this characteristic, they are primarily used as voltage regulators or voltage reference elements. Zener diodes can be connected in series for use at higher voltages, allowing for higher stabilized voltages through series connection.

100022798 Electrical Component Classification

For most conductors, at a given temperature, the resistance remains almost constant at a fixed value; such resistors are called linear resistors. For some materials, the resistance changes significantly with current (or voltage), and their volt-ampere characteristic is a curve; such resistors are called nonlinear resistors. For a nonlinear resistor under a given voltage (or current), the ratio of voltage to current is the static resistance at that operating point, and the slope of the volt-ampere characteristic curve is the dynamic resistance. The methods for expressing nonlinear resistor characteristics are relatively complex, but these nonlinear relationships are widely applied in electronic circuits.

100022798 Electrical Component Parameters

(1) Rated operating voltage: refers to the voltage required by the coil for the relay to operate normally. Depending on the relay model, it can be AC voltage or DC voltage. (2) DC resistance: refers to the DC resistance of the relay coil, which can be measured with a multimeter. (3) Pull-in current: refers to the minimum current required for the relay to perform the pull-in action. During normal use, the supplied current must be slightly greater than the pull-in current to ensure stable operation of the relay. The operating voltage applied to the coil should generally not exceed the rated operating voltage; otherwise, excessive current may burn out the coil. (4) Release current: refers to the maximum current at which the relay performs the release action. When the current in the pulled-in state decreases to a certain level, the relay returns to the de-energized released state; this current is much lower than the pull-in current. (5) Contact switching voltage and current: refer to the voltage and current that the relay is allowed to carry. These values determine the magnitude of voltage and current the relay can control. Do not exceed these values during use, as doing so can easily damage the relay contacts.

100022798 Electrical Component Classification

Plug-in fuses are often used at the end of lines for short-circuit protection of distribution branch circuits or electrical equipment. Screw-type fuses have a fuse indicator on the upper cap of the fuse element. Once the fuse element melts, the indicator pops out immediately and can be observed through the glass hole on the ceramic cap. They are commonly used in machine tool electrical control equipment. Enclosed fuses are divided into filled and unfilled types. Filled fuses typically use square ceramic tubes containing quartz sand and the fuse element, offering high breaking capacity. Unfilled enclosed fuses enclose the fuse element in a sealed cylinder and have slightly lower breaking capacity. Fast-acting fuses are mainly used for short-circuit protection of semiconductor rectifier elements or rectifier devices. Since semiconductor components have very low overload capacity and can only withstand large overload currents for extremely short periods, short-circuit protection requires fast-acting fusing capability. The structure of fast-acting fuses is basically the same as that of filled enclosed fuses, but the fuse element material and shape differ; it uses a silver sheet stamped into a variable cross-section fuse element with V shaped deep grooves. Fast-acting fuses, often abbreviated as "fast fuses," are characterized by fast fusing speed, high rated current, strong breaking capacity, stable current-limiting characteristics, and small size. Self-resetting fuses use sodium metal as the fuse element, which has high electrical conductivity at room temperature. When a short-circuit fault occurs in the circuit, the short-circuit current generates high temperature that rapidly vaporizes the sodium. The gaseous sodium presents a high-resistance state, thereby limiting the short-circuit current. After the short-circuit current disappears and the temperature drops, the sodium metal restores its original good conductivity. Self-resetting fuses can only limit short-circuit current and cannot truly disconnect the circuit. Their advantage is that the fuse element does not need to be replaced, allowing for repeated use.

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