di-soric electrical components Germany di-soric model di-soric price

di-soric electrical component is a sensor resistor whose resistance value changes with temperature. According to different temperature coefficients, it is divided into positive temperature coefficient thermistors and negative temperature coefficient thermistors. The resistance value of a positive temperature coefficient thermistor increases as the temperature rises, while the resistance value of a negative temperature coefficient thermistor decreases as the temperature rises; they both belong to semiconductor devices.

di-soric electrical component structure

A bipolar junction transistor is made by fabricating two closely spaced PN junctions on a single semiconductor substrate. The two PN junctions divide the entire semiconductor into three parts: the middle part is the base region, and the two side parts are the emitter region and the collector region. There are two arrangement types: PNP and NPN. Corresponding electrodes are led out from the three regions, namely the base b, emitter e, and collector c. The PN junction between the emitter region and the base region is called the emitter junction, and the PN junction between the collector region and the base region is called the collector junction. The base region is very thin, while the emitter region is thicker with a high impurity concentration. In a PNP type transistor, the emitter "emits" holes, whose movement direction is consistent with the current direction, so the emitter arrow points inward; in a NPN type transistor, the emitter "emits" free electrons, whose movement direction is opposite to the current direction, so the emitter arrow points outward. The direction of the emitter arrow also indicates the conduction direction of the PN junction under forward voltage. Both silicon and germanium bipolar junction transistors have PNP type and NPN type variants. Transistor package forms and pin identification: Common transistor packages fall into two main categories: metal packages and plastic packages. The pin arrangement follows certain rules. When placed in a bottom-view position such that the three pins form the vertices of an isosceles triangle, the order from left to right is e b c; for small and medium-power plastic transistors, when oriented with the flat side facing you and the three pins pointing downward, the order from left to right is e b c.

di-soric electrical component parameters

1. Nominal varistor voltage: refers to the voltage value across the varistor when a pulse current of specified duration passes through it. 2. Voltage ratio: refers to the ratio of the voltage value generated by the current in the varistor to the voltage value generated by the current in the varistor. 3. Maximum limiting voltage: the peak voltage across the varistor under the maximum pulse peak current Ip that the varistor can withstand and under a specified waveform. 4. Residual voltage ratio: when the current passing through the varistor is at a certain value, the voltage generated across it is called the residual voltage for that current value. The residual voltage ratio is the ratio of the residual voltage to the nominal voltage. 5. Current handling capacity: also known as surge current rating, it refers to the maximum pulse current value allowed to pass through the varistor under specified conditions. 6. Leakage current: also known as standby current, it refers to the current flowing through the varistor when the varistor is at a specified temperature and under maximum DC voltage. 7. Voltage temperature coefficient: refers to the rate of change of the varistor's nominal voltage within a specified temperature range, i.e., the relative change in voltage across the varistor when the temperature changes while the current passing through the varistor remains constant. 8. Current temperature coefficient: refers to the relative change in the current flowing through the varistor when the temperature changes while the voltage across the varistor remains constant. 9. Voltage nonlinearity coefficient: refers to the ratio of the static resistance value to the dynamic resistance value of the varistor under a given applied voltage. 10. Insulation resistance: refers to the resistance value between the lead wires of the varistor and the insulating surface of the resistive body. 11. Static capacitance: refers to the inherent capacitive capacity of the varistor itself. 12. Rated power: the maximum power that causes a change in varistor voltage when operating at a specific ambient temperature. 24. Maximum surge current: the maximum surge current that causes a change in varistor voltage when the varistor is impacted by a specific pulse current once or twice.

di-soric electrical component characteristics

Resolution refers to the ability of a sensor to detect the smallest change in the measured quantity. That is, if the input changes slowly from a non-zero value, the sensor output will not change when the input change does not exceed a certain value, meaning the sensor cannot resolve this change in the input. Only when the change in the input exceeds the resolution will the output change. Typically, the resolution at various points within the full-scale range of a sensor is not the same; therefore, the maximum change in the input within the full scale that causes a step change in the output is commonly used as the indicator for measuring resolution. If the above indicator is expressed as a percentage of the full scale, it is called resolution. Resolution has a negative correlation with sensor stability.

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