TIP31C NPN Power Transistor (Low Power Variant) from China
TIP31C variant configured for <1W operation in linear voltage regulators and current sources. Despite power transistor appearance, electrical specs qualify for HTS 8541.21.00.95. Used where heat sinking limits power to under 1W.
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
• Derating curves mandatory to prove <1W operation despite TO-220 package
• Heatsink requirements documentation prevents power transistor misclassification
• Safe operating area (SOA) graphs essential for linear mode applications