1015DU in stock German 1015DU electrical components 1015DU inventory

1015DU electrical component is a resistive device with nonlinear voltage-current characteristics, mainly used for voltage clamping when the circuit is subjected to overvoltage, absorbing excess current to protect sensitive devices. The resistor body material of the varistor is semiconductor, so it is a type of semiconductor resistor. The currently widely used "zinc oxide" varistor has a main body material composed of divalent element zinc and hexavalent element oxygen. Therefore, from a material perspective, the zinc oxide varistor is a "II-VI group oxide semiconductor". In Taiwan, China, varistors are called "surge absorbers", sometimes also referred to as "electric shock (surge) suppressors (absorbers)". A varistor is a voltage-limiting protection device. Utilizing the nonlinear characteristics of the varistor, when an overvoltage appears between the two poles of the varistor, the varistor can clamp the voltage to a relatively fixed value, thereby achieving protection for the subsequent circuit. The main parameters of a varistor include: varistor voltage, current handling capacity, junction capacitance, response time, etc. The response time of a varistor is at the ns level, faster than gas discharge tubes, but slightly slower than TVS tubes. Generally, its response speed can meet the requirements for overvoltage protection in electronic circuits. The junction capacitance of a varistor is generally in the range of hundreds to thousands of Pf, making it unsuitable for direct application in the protection of high-frequency signal lines in many cases. When applied in AC circuit protection, its larger junction capacitance will increase leakage current, which needs to be fully considered in the design of protection circuits. The current handling capacity of a varistor is relatively large, but smaller than that of gas discharge tubes. Varistors are abbreviated as VDR, and are nonlinear overvoltage protection semiconductor components sensitive to voltage.

1015DU electrical component classification

Terminal blocks can be divided into European-style terminal block series, plug-in terminal block series, transformer terminal blocks, building wiring terminals, fence-style terminal block series, spring-style terminal block series, DIN rail-mounted terminal block series, wall-through terminal block series, optocoupler-type terminal block series, various ring terminals, tubular terminals, terminal blocks, copper strips, iron strips, etc. Usage methods include plug-in, fence-style, spring-style, DIN rail-mounted, wall-through, and fuse terminals.

1015DU electrical component composition

A diode is formed by a PN junction plus corresponding electrode leads and package casing. Using different doping processes, through diffusion, P-type semiconductor and N-type semiconductor are fabricated on the same semiconductor substrate (usually silicon or germanium), forming a space charge region at their interface called the PN junction. The electrode drawn from the P region is called the anode, and the electrode drawn from the N region is called the cathode. Due to the unidirectional conductivity of the PN junction, when the diode is conducting, the current direction flows from the anode through the interior of the tube to the cathode. A diode has two electrodes; the electrode drawn from the P region is the positive pole, also called the anode; the electrode drawn from the N region is the negative pole, also called the cathode.

1015DU electrical component features

Most microphones are electret condenser microphones (ECM), a technology with a history of several decades. The working principle of ECM utilizes a polymer diaphragm with permanently isolated charges. Compared to the polymer diaphragm of ECM, MEMS microphones exhibit stable performance across different temperatures, unaffected by temperature, vibration, humidity, and time. Due to strong heat resistance, MEMS microphones can withstand high-temperature reflow soldering without any change in performance. Since the sensitivity change before and after assembly is minimal, this can even save audio debugging costs during the manufacturing process. Currently, integrated circuit processes are increasingly widely applied in the manufacturing of sensors and sensor interface integrated circuits. This microfabrication process offers advantages such as precision, flexible design, miniaturization, integration with signal processing circuits, low cost, and mass production. A first-order resonant frequency in such a low frequency band will result in highly uneven frequency response within the auditory frequency range for the microphone, which is unacceptable for microphone applications. When tensile stress exists within the sensitive membrane, its resonant frequency increases, but at the cost of sensitivity. Of course, higher first-order resonant frequencies can be obtained by adjusting the size of the sensitive membrane, but this will still reduce sensitivity. Thus, piezoresistive schemes are not suitable for the manufacture of miniature microphones. A feasible solution is to adopt a capacitive scheme to manufacture miniature microphones. The advantage of this method is that all materials used in integrated circuit manufacturing processes can be used for sensor manufacturing. However, manufacturing micro-microphones using single-chip processes is quite difficult because the air medium between the two capacitor plates can only have a very small gap. Moreover, due to size limitations, bias voltage is difficult to satisfy in some application scenarios. Based on these issues, research on capacitive microphones has continued uninterrupted. Compared to traditional electret microphones, micro-electromechanical system (MEMS) microphones offer advantages such as small size, good heat resistance, good consistency, good stability, high reliability, and resistance to radio frequency interference, and can also output digital signals, facilitating intelligent development.

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