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Three important factors to consider when selecting SMD inductors

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.
80 views2023-05-15
What are the methods for detecting chip capacitors

If 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.
103 views2023-05-15
What are the technical performance characteristics of electrolytic capacitor?

Range 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)
95 views2023-05-15

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