Optical coupled isolators
Semiconductor devices (for example, diodes, transistors, semiconductor-based transducers); photosensitive semiconductor devices, including photovoltaic cells whether or not assembled in modules or made up into panels; light-emitting diodes (LED), whether or not assembled with other light-emitting diodes (LED); mounted piezo-electric crystals; parts thereof: > Photosensitive semiconductor devices, including photovoltaic cells whether or not assembled in modules or made up into panels; light-emitting diodes (LED): > Other: > Other: > Optical coupled isolators
Duty Rate (from China)
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
Articles the product of any country, as provided for in subdivision (aa)(ii) of U.S. note 2 to this subchapter
Products classified 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.
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.
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.
CNY17F-1 High Isolation Optocoupler
CNY17F-1 provides 7.5kV high isolation between IR LED and phototransistor for medical and industrial applications. Classified HTS 8541.49.80.00 for superior creepage/clearance distances in patient monitoring equipment. CTR guaranteed over wide temperature range for reliable feedback control.
EL357N Narrow CTR Optocoupler
EL357N features tightly controlled CTR (50-200%) for precision feedback applications, optically coupled GaAs LED to phototransistor. HTS 8541.49.80.00 classification for optical isolation in SMPS and motor control requiring accurate current proportioning. SOP-5 package enables high-density mounting.
FOD817 Silicon Phototransistor Optocoupler
FOD817 uses silicon phototransistor coupled to high-reliability AlGaAs LED for 5kV isolation in telecom line interfaces. Classified under HTS 8541.49.80.00 as optical coupled isolator for ringing detection and hookswitch circuits. Extended industrial temperature operation (-40°C to +85°C).
TLP627 Programmable Gain Optocoupler
TLP627 offers programmable gain phototransistor via external resistor network, providing flexible CTR adjustment. HTS 8541.49.80.00 for optical isolation applications requiring field-adjustable transfer characteristics. DIP-8 package accommodates gain setting resistor internally.
HCPL-817-00DE Commercial Optocoupler
HCPL-817-00DE is cost-effective DIP-4 optocoupler for commercial SMPS and printer interfaces, 5kV isolation rating. Falls under HTS 8541.49.80.00 as standard optical coupled isolator for high-volume consumer electronics manufacturing. Balanced CTR distribution for consistent performance.
LTV-817B High CTR Optocoupler
LTV-817B provides high CTR (400-800%) for low input current detection circuits, optically coupled in DIP-4 package. HTS 8541.49.80.00 classification for high sensitivity optical isolation in battery-powered equipment. 5kV isolation supports portable device applications.
PS2501-1 Low-Profile Optocoupler
PS2501-1 features 3mm low-profile package with IR LED-phototransistor coupling for space-constrained applications. Classified HTS 8541.49.80.00 for optical isolation in notebook computers and handheld instruments. Maintains 2.5kV isolation in miniature form factor.
TLP785 Mini-Flat Optocoupler
TLP785BL mini-flat package (SO-6) optocoupler provides 5kV isolation for high-density PCB mounting in automotive ECUs. HTS 8541.49.80.00 as optical coupled isolator for vehicle signal isolation and CAN bus interfaces. Automotive grade reliability (-55°C to +125°C).