FOD617B300

Overview

The onsemi FOD617B300 is a single-channel phototransistor output optocoupler housed in a 4-pin DIP package. It features an NPN phototransistor output with a maximum collector-emitter voltage of 70 V and a peak forward current of 50 mA. The device provides high isolation capability with a rated insulation voltage of 5000 Vrms. Typical switching characteristics include rise and fall times of 18 μs. The unit operates within a temperature range of -55°C to +110°C and offers a typical current transfer ratio of 320%.

Feature Summary

• Provides galvanic isolation between input and output circuits via an internal LED and phototransistor structure.
• Features a standard four-lead dual in-line package suitable for through-hole mounting applications.
• Delivers high-voltage isolation performance rated at 5000 Vrms for safety-critical signal transmission.

Applications

• General-purpose signal isolation in industrial control systems
• Power supply feedback loops requiring voltage separation
• Microcontroller interface circuits for noise immunity

Procurement Notes

Verify the specific suffix B300 against the official datasheet to confirm packaging quantity and reel specifications. Ensure the procurement channel sources genuine onsemi components to guarantee compliance with the stated electrical parameters and isolation ratings. Cross-reference the manufacturer part number with authorized distributor catalogs to avoid counterfeit substitutions.

Selection Notes

Select this component when a standard phototransistor output is required for moderate-speed signal isolation. The 70 V collector-emitter rating supports common logic levels, while the 5000 Vrms isolation meets stringent safety standards. Consider the 18 μs switching speed for applications not requiring high-frequency data transmission.

Part Context

This device belongs to the FOD617 series of transistor output optocouplers from onsemi. The series is designed for general-purpose isolation tasks where cost-effectiveness and reliability are prioritized over high-speed performance. The FOD617B300 variant specifically denotes the standard DIP-4 packaging configuration.

Replacement Considerations

Compatible substitutes include other FOD617 variants such as FOD617D or FOD617C300, provided the current transfer ratio and switching speed requirements align with the application design. Verify pinout compatibility before substitution.

FAQ

What is the maximum isolation voltage rating?

The FOD617B300 has a maximum insulation voltage rating of 5000 Vrms.

What is the typical current transfer ratio?

The typical current transfer ratio for this device is 320%.