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The bending angle of the pins of common mode inductors primarily affects mechanical strength: If the bending angle is too small (e.g., <90°), stress concentration occurs at the bent part of the pin, making it prone to fatigue fracture under long-term vibration (such as in automotive and industrial scenarios), thereby reducing mechanical reliability. Excessive bending (e.g., repeated bending) may damage the internal metal structure of the pin (such as copper wire breakage), leading to a sharp drop in mechanical strength. Electrical performance: If the bending angle is too small (acute angle): The "tip effect" at the bent part of the pin at high frequencies increases parasitic inductance and radiation, resulting in a decrease in high-frequency filtering effect (e.g., impedance reduction in frequency bands above 1GHz). If the bending radius is too small: The impedance non-uniformity of the pin increases, potentially causing signal reflection and affecting common mode suppression stability in low-frequency bands (e.g., below 1MHz). It is recommended that the bending angle be ≥90°, and the bending radius be no less than 1-2 times the diameter of the pin (e.g., for a φ0.8mm pin, the radius should be ≥0.8mm) to balance mechanical strength and electrical performance
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