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
9903.05.860%Articles provided for in subdivision (b) of U.S. note 52 to this subchapter
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