1N4728A 3.3V Zener Diode
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.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If standard PN junction without Zener characteristics
Non-Zener diodes are captured in the broader 'Other diodes' subheading.
If mounted on ceramic substrates for high-power apps
Certain semiconductor devices on insulators may shift to apparatus for voltage regulation.
If imported as parts of semiconductor assemblies
Parts thereof for semiconductor devices fall under the residual parts heading.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right HTS code — and can price the duty on it in the same conversation.
Import Tips & Compliance
• 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
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