AA112 Zener Diode from China

AA112 is a low-power silicon zener diode for voltage regulation in 5-200mW circuits. Classified HTS 8541.10.00.70 with maximum current well below 0.5A, used in stabilization circuits of consumer gadgets.

Duty Rate — China → United States

50%

Rate breakdown

9903.91.0550%Effective with respect to entries on or after January 1, 2025, articles the product of China, as provided for in subdivision (f) of U.S. note 31 to this subchapter

9903.03.030%Articles the product of any country, as provided for in subdivision (aa)(ii) of U.S. note 2 to this subchapter

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Import Tips

• Document zener voltage rating and power dissipation to confirm low-current classification

• Zener diodes often confused with LEDs; include spectral analysis if questioned by customs

• Batch test for voltage tolerance; parameter drift common rejection reason