Package direction: DIP4, SMD4, 817-class references, and board-space equivalents.
Wisdomray product family
Optocouplers
Signal isolation components for power supply feedback, smart meters, home appliance boards, industrial controls, and communication interfaces.
Where this family fits
Signal isolation components for power supply feedback, smart meters, home appliance boards, industrial controls, and communication interfaces.
Classroom sourcing content. Confirm exact models, datasheets, sample results, certifications, and any supplier relationship before public commercial use.
Parameters and selection points
Package, electrical, optical, and sourcing checks
Isolation checks: isolation voltage, creepage/clearance fit, insulation requirement, and safety document request path.
Electrical matching: CTR range, input current, output transistor behavior, response time, and temperature range.
Assembly format: through-hole or SMD preference, tube or reel packing, and sample approval workflow.
Define whether the part supports feedback, logic isolation, communication isolation, or signal transfer.
Align input current, CTR bin, output current, aging margin, and control-loop requirement.
Choose DIP or SMD package based on board spacing, process route, clearance, and supply format.
Ask for datasheet, test condition, certificate or compliance file availability before commercial use.
Application scenarios
Use cases buyers can describe in an RFQ
Switching power supplies
Feedback isolation and control loop signal transfer in AC/DC and DC/DC power modules.
Smart meters
Isolation positions for metering, communication, and MCU interface circuits.
Home appliances
Control-board isolation for appliances, power stages, and user interface electronics.
Industrial controls
Signal isolation for controllers, relays, panel electronics, and factory automation boards.
Purchasing and RFQ checklist
Information to send before sample matching
- Reference model or target package.
- Isolation voltage, creepage/clearance expectation, and application circuit.
- CTR range, input current, output current, and response speed.
- Operating temperature, process route, and packing format.
- Sample quantity, annual forecast, destination country, and required compliance files.
Related blog links
Continue the selection research
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