K844P

Transistor, Photovoltaic Output Optoisolators Overview

The K844P is a quad phototransistor output optocoupler manufactured by Vishay Semiconductor Opto Division. It features four independent channels in a 16-pin DIP package with a 7.62 mm width. Key electrical specifications include a maximum collector-emitter voltage of 70 V, a forward current of 60 mA, and a maximum collector current of 50 mA. The device offers an insulation voltage of 5000 Vrms and a typical coupling capacitance of 0.3 pF. It operates within a temperature range of -40°C to +100°C and has a power dissipation rating of 250 mW.

Transistor, Photovoltaic Output Optoisolators Feature Summary

• Provides DC isolation test voltage of 5 kV for robust signal transmission between isolated circuits.
• Features low coupling capacitance to minimize high-frequency noise interference.
• Endstackable design allows for compact PCB layout with standard 2.54 mm pin spacing.

Transistor, Photovoltaic Output Optoisolators Applications

• Microcontroller interface circuits requiring galvanic isolation
• Signal transmission in industrial control systems
• Power supply feedback loops

Transistor, Photovoltaic Output Optoisolators Procurement Notes

Verify the specific datasheet version from Vishay Semiconductor Opto Division to confirm RoHS compliance status and exact mechanical dimensions. Ensure the procurement channel provides authentic components with traceable manufacturing dates. Cross-reference the part number K844P with official Vishay documentation to validate the 16-DIP package configuration and electrical ratings before finalizing orders.

Transistor, Photovoltaic Output Optoisolators Selection Notes

Select the K844P when multiple isolated channels are required in a single package to save board space. Consider its 5000 Vrms isolation rating for applications involving high-voltage separation. Evaluate the 70 V collector-emitter voltage limit against the load requirements. The quad configuration makes it suitable for multi-channel data acquisition or control systems needing simultaneous isolation.

Transistor, Photovoltaic Output Optoisolators Part Context

The K844P belongs to the K8xx series of transistor output optocouplers from Vishay. This series is designed for general-purpose isolation applications. The K844P specifically integrates four phototransistors, distinguishing it from single-channel variants like the K814P. It shares similar electrical characteristics with other members of the family but differs in channel count and package pinout.

Transistor, Photovoltaic Output Optoisolators Replacement Considerations

Check for direct substitutes such as the K814P or K824P if fewer channels are sufficient. Verify that any replacement maintains the 5000 Vrms isolation voltage and compatible DIP-16 footprint. Ensure the alternative component meets the same operating temperature range and current transfer ratio specifications.

Transistor, Photovoltaic Output Optoisolators FAQ

What is the maximum insulation voltage of the K844P?

The K844P supports a DC isolation test voltage (VIO) of 5 kV.

How many channels does the K844P contain?

The K844P contains four independent phototransistor channels.

What is the typical coupling capacitance value?

The typical coupling capacitance is 0.3 pF.