DARLINGTON Phototransistor Dual Element from Mexico
High current gain darlington connected phototransistor pair providing 10,000+ gain for low light level detection in smoke detectors and medical instruments. Falls under HTS 8541.49.70 as photosensitive transistor configuration.
Duty Rate — Mexico → United States
0%
Rate breakdown
9903.05.860%Universal product exemption (U.S. note 52(b))
Import Tips
• Specify darlington configuration in documentation; still classifies as phototransistor not two separate devices
• Include smoke detector UL certification if applicable for end-use verification
• Avoid GRI 3(a) set classification; functions as single photosensitive transistor unit