Ambient Light Sensor Transistor ALS-PT19
A photosensitive transistor designed to measure ambient visible light levels for automatic backlight control in smartphones and displays. It features a daylight-visible spectral response mimicking human eye sensitivity, operating as a light-dependent transistor. Falls under 8541.49.70.80 as a discrete photosensitive semiconductor transistor.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If thyristor-type photosensitive device
Light-activated thyristors (SCRs) use different semiconductor structure classified separately from phototransistors.
If imported as populated PC board assembly
Photosensitive transistors mounted on PCBs for computers classify as parts of ADP machines.
If specialized for camera exposure measurement
Phototransistors designed specifically for photographic light metering may fall under camera parts.
Not sure which classification is right?
Our AI classifier can analyze your specific product and recommend the correct HTS code with confidence.
Import Tips & Compliance
• Provide spectral response curves showing visible light sensitivity (400-700nm) to distinguish from IR-only devices
• Declare as discrete component, not IC, with leadframe photos confirming single transistor die construction
• Watch for reclassification as display parts (8531.90) if marketed specifically for LCD backlight systems
Related Products under HTS 8541.49.70.80
IR Phototransistor T-1 3/4 Package
An infrared phototransistor in a T-1 3/4 (5mm) plastic package designed for object detection and remote control applications. It converts infrared light into electrical current using a photosensitive semiconductor base, functioning as a light-controlled transistor. Classified under 8541.49.70.80 as a photosensitive semiconductor device in transistor form, distinct from photovoltaic cells or LEDs.
Visible Light Phototransistor LTR-306
Silicon NPN phototransistor sensitive to visible spectrum (400-600nm) used in light barriers, encoders, and paper detection. Features high gain and fast response in TO-18 metal can package. HTS 8541.49.70.80 covers this discrete photosensitive transistor.
DARLINGTON Phototransistor QSD2030F
High-gain Darlington-connected phototransistor pair in surface-mount package for low-light detection in consumer electronics. Provides current gain >10,000 for ultra-sensitive applications. Classified as photosensitive transistor under 8541.49.70.80.
Side-Looking Phototransistor PT908-7C
Infrared side-looking phototransistor in 4-pin DIP package for slot sensors and reflective object detection. 940nm peak sensitivity with 45° acceptance angle. Discrete photosensitive semiconductor under HTS 8541.49.70.80.
Blue-Sensitive Silicon Phototransistor
Phototransistor with enhanced blue light response (400-500nm) for LCD backlight monitoring and color sensing. Uses special window material for short wavelength transmission. HTS 8541.49.70.80 as specialized photosensitive transistor.
Miniature Phototransistor TEMD5010X01
0201-size (0.6x0.3mm) IR phototransistor for mobile device proximity sensing and wearables. Ultra-low profile for under-display applications. Compact photosensitive transistor under 8541.49.70.80.