1N4728A 3.3V Zener Diode from China
The 1N4728A is a 3.3V Zener diode commonly used in low-voltage reference and protection circuits for microcontrollers and sensors. Classified under HTS 8541.10.0050 due to its Zener breakdown mechanism distinguishing it from standard rectifier diodes.
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
Import Tips
• Provide test data confirming Zener voltage and power rating to support tariff classification
• Declare exact quantity and value per diode; avoid bulk packaging misdescription
• Watch for anti-dumping duties on certain Asian-origin semiconductor diodes