LTV-851S

Transistor, Photovoltaic Output Optoisolators Overview

The LTV-851S is a single-channel transistor output optocoupler manufactured by Lite-On Inc. It features a surface-mount package with four pins, designed for through-hole or SMD applications depending on the specific variant configuration. The device provides high isolation voltage of 5000 V ac between input and output circuits. Key electrical parameters include a minimum current transfer ratio of 40%, a maximum forward voltage of 1.4V, and a maximum input current of 50 mA. Typical switching characteristics show a rise time of 4µs and a fall time of 5µs. It accepts direct current input signals.

Transistor, Photovoltaic Output Optoisolators Feature Summary

• Provides galvanic isolation via an internal LED and phototransistor structure.
• Supports high voltage isolation capabilities for safety-critical signal transmission.
• Designed for reliable DC input signal coupling to transistor output stages.

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 exact suffix (e.g., TA1) against the manufacturer's official datasheet to confirm pinout and packaging specifications. Ensure the component meets required isolation voltage ratings for the specific application environment. Cross-reference the current transfer ratio requirements with system design constraints before finalizing procurement orders.

Transistor, Photovoltaic Output Optoisolators Selection Notes

Select this component when high isolation voltage and moderate speed switching are required. Compare the 40% minimum CTR against load requirements to ensure sufficient output drive capability. Consider the 4-pin surface mount form factor for PCB space constraints. Verify compatibility with standard transistor logic levels for seamless integration into existing circuit designs.

Transistor, Photovoltaic Output Optoisolators Part Context

This part belongs to Lite-On's family of transistor output optocouplers. It shares functional similarities with other single-channel devices like the LTV-851 but differs in physical packaging. The series is commonly used for general-purpose signal isolation where cost-effectiveness and reliability are prioritized over high-speed data transmission capabilities found in logic gate output variants.

Transistor, Photovoltaic Output Optoisolators Replacement Considerations

Public confirmed substitute part numbers: 4N28S-TA1