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The main specifications of inductance include, in addition to size, the inductance value at switching frequency, DC impedance (DCR) of the coil, rated saturation current, rated rms current, AC impedance (ESR), and Q factor. Depending on the application, the choice of inductance type - shielded or unshielded - is also important.
116 views2023-05-15Chip capacitors are a type of capacitive material. The full name of chip capacitors is: multilayer (stacked, stacked) chip ceramic capacitors, also known as chip capacitors, chip capacitance. There are two ways to represent chip capacitors, one is in inches and the other is in millimeters. A capacitor, as the name suggests, is a "container for holding electricity" and a device that holds charges. English name: capacitor.
161 views2023-05-15Chip capacitors, as passive components, are commonly used in power circuits for functions such as bypass, decoupling, filtering, and energy storage. In signal circuits, their main functions include coupling, oscillation/synchronization, and time constant. Let's explain each of these separately.
160 views2023-05-15The parameters such as X5R, X7R, Y5V, Z5U, COG, COH, etc. of chip capacitors describe the type of dielectric material used for capacitor acquisition, temperature characteristics, and error parameters. Different values also correspond to the range of capacitor capacity. What are the differences?
165 views2023-05-15If the appearance is normal. The quality of capacitors can be tested and judged using a multimeter resistance range. Large capacity (1 μ Fixed capacitors with a rating of F or above can use the resistance range (R) of a multimeter × 1000) Measure the two electrodes of the capacitor, and the watch needle should swing in the direction of low resistance, then slowly swing back to around ∞. Next, exchange the test rod and try again to observe the swing of the watch needle. The larger the swing, the greater the capacitance of the capacitor.
131 views2023-05-15Range requirements of electrolytic capacitor, rated voltage range: 6.3V-400V DC; Operating temperature range: -55 ℃~+105 ℃; Nominal capacitance range: 0.1-6800uf; Leakage current (20 ℃): 1 ≤ 0.01CrUr (uA) or 3uA, whichever is greater (2 minutes)
120 views2023-05-15Firstly, SMD inductors have the advantage of miniaturization, as they do not occupy too much space and are not affected by environmental factors. If it is applied to various small devices, it is also very suitable because the device itself has a relatively small volume, so there are also volume requirements for various internal pole components. In such a state, everyone can choose it first, Because it holds a unique advantage in terms of volume.
125 views2023-05-12There are two types of electrolytic capacitor, energy storage capacitor and bypass capacitor, and their use methods are also different.
127 views2023-05-12The volume and weight of SMT capacitors and resistors are only about 1/10 that of traditional plug-in components. After using SMT, the volume of electronic products is reduced by 40% to 60%, and the weight is reduced by 60% to 80%. High reliability, strong vibration resistance, low solder joint defect rate, good high-frequency characteristics, reduced electromagnetic and radio frequency interference, easy to achieve automation, improved production efficiency, and reduced costs by 30% to 50%.
122 views2023-05-12