K817P

Transistor, Photovoltaic Output Optoisolators Overview

The K817P is a single-channel optocoupler manufactured by Vishay Semiconductor Opto Division, featuring a phototransistor output. It provides electrical isolation with a voltage rating of 5000Vrms between input and output circuits. The device utilizes a DC input type and is housed in a standard 4-DIP package configuration. Key performance specifications include a minimum current transfer ratio of 50% when tested at an input current of 5mA. This component is designed for signal transmission across isolated barriers while maintaining high voltage withstand capabilities.

Transistor, Photovoltaic Output Optoisolators Feature Summary

• Provides galvanic isolation between input and output circuits using a phototransistor output stage
• Supports high voltage isolation ratings suitable for safety-critical signal transmission applications
• Features a compact four-pin dual in-line package design for standard mounting configurations

Transistor, Photovoltaic Output Optoisolators Applications

• Signal isolation in industrial control systems
• Interface circuits for microprocessor-based logic systems
• Switching power supply feedback loops

Transistor, Photovoltaic Output Optoisolators Procurement Notes

Verify the specific manufacturer designation and revision status before procurement, as the component may be classified as obsolete or end-of-life depending on regional availability. Confirm that the 4-DIP package dimensions match the target PCB footprint requirements. Ensure that the 5000Vrms isolation rating meets the safety standards required for the intended application environment. Check for alternative sourcing channels if original inventory is depleted.

Transistor, Photovoltaic Output Optoisolators Selection Notes

Select this component when a phototransistor output is required for low-speed digital signal isolation. The 5000Vrms isolation level makes it suitable for applications requiring robust barrier protection. Consider the 50% minimum current transfer ratio at 5mA input to ensure adequate drive capability for downstream logic gates. Evaluate the 4-DIP package constraints against available board space and mounting preferences.

Transistor, Photovoltaic Output Optoisolators Part Context

This part belongs to the family of Vishay optocouplers utilizing phototransistor outputs. It serves as a discrete solution for isolating low-voltage control signals from higher voltage power stages. The K817P represents a standard industry form factor for basic optoisolation needs, distinct from faster transistor-array or logic-output variants.

Transistor, Photovoltaic Output Optoisolators Replacement Considerations

Public confirmed substitute part numbers are not provided in the source documentation. As the component status is noted as obsolete, equivalent parts must be identified through independent cross-reference databases rather than official manufacturer substitution lists.