PC817 Photocoupler
The PC817 series optical isolator features an infrared LED optically coupled to a phototransistor in a 4-pin DIP package, offering 5kV isolation voltage. Classified under HTS 8541.49.80.00 for its role as an optical coupled isolator in telecommunication equipment and AC input detection circuits. Provides high reliability signal transmission between high and low voltage circuits.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If includes semiconductor-based transducer function
Devices combining optical isolation with pressure/temperature transduction classified as semiconductor-based transducers
If imported as parts of complete isolator assemblies
Parts of photosensitive devices not meeting complete isolator criteria may fall under parts provision
If when used as control panel isolation in boards
Boards with mounted control/isolation functions classified under control panels rather than discrete devices
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Import Tips & Compliance
• Provide package outline drawings showing 4-pin DIP configuration typical of optical isolators; include isolation voltage certification
• Declare exact CTR range and forward current specs to distinguish from general purpose transistors under different subheadings
• Ensure commercial invoice specifies 'optical coupled isolator' function; prepare for CBP requests for application circuit diagrams
Related Products under HTS 8541.49.80.00
TLP521 Optocoupler
The TLP521 is a photosensitive semiconductor optocoupler consisting of a gallium arsenide infrared LED optically coupled to a phototransistor, providing electrical isolation up to 2.5kV. It falls under HTS 8541.49.80.00 as an optical coupled isolator used in power supplies and motor drives to transmit signals while preventing high voltage feedback. This device ensures reliable galvanic isolation in industrial control circuits.
TLP181GB High-Speed Optocoupler
TLP181GB is a high-speed optical coupled isolator with infrared LED and phototransistor, featuring 3.75kV isolation for 10Mbps data transmission. Falls under HTS 8541.49.80.00 as it provides optical signal coupling for isolated I/O interfaces in digital circuits. Used in PLCs and servo amplifiers requiring fast switching isolation.
SFH618A-2 Phototransistor Optocoupler
SFH618A-2 optical isolator combines AlGaAs infrared emitter with phototransistor in SMD package, providing 5.3kV isolation. Classified HTS 8541.49.80.00 for optical coupling in SMPS feedback circuits and microprocessor interfaces. High CTR stability makes it ideal for precise current sensing applications.
H11A1 AC Input Optocoupler
H11A1 features bidirectional phototransistor output for AC input detection, optically coupled to infrared LED with 5kV isolation. HTS 8541.49.80.00 classification for optical isolation in zero-crossing detection and solid-state relays. Designed for noisy industrial environments requiring reliable AC signal isolation.
4N25 General Purpose Optocoupler
4N25 is a versatile optical isolator with GaAs infrared LED coupled to phototransistor in 6-pin DIP, offering 2.5kV isolation. Falls under HTS 8541.49.80.00 for general purpose interface isolation in computers, printers, and instrumentation. Base-emitter pin enables high-speed switching applications.
TLP2362 High-Speed Logic Gate Optocoupler
TLP2362 integrates infrared LED with high-speed logic gate output for 15Mbps isolated data transmission, 3.75kV isolation. HTS 8541.49.80.00 as optical coupled isolator despite logic function due to discrete photosensitive semiconductor construction. Used in isolated bus interfaces and digital I/O cards.