ISOM8118DFGRQ1

Transistor, Photovoltaic Output Optoisolators Overview

The ISOM8118DFGRQ1 is a single-channel, automotive-grade optical coupler featuring an AC-input LED driver and a phototransistor output. It provides galvanic isolation with a rated insulation voltage of 3750 Vrms. The device supports a maximum forward current of 50 mA and a collector current of 50 mA, with a maximum collector-emitter voltage of 80 V. Key electrical parameters include a typical rise time of 3.2 µs and fall time of 4 µs. The current transfer ratio ranges from 375% to 560%. It operates within a temperature range of -55°C to +125°C and is housed in a SOIC-4 surface-mount package.

Transistor, Photovoltaic Output Optoisolators Feature Summary

• Automotive qualification compliant with AEC-Q100 standards for reliability in vehicle applications.
• AC-input capability allows direct connection to AC signals without external rectification circuitry.
• High current transfer ratio ensures efficient signal transmission between isolated circuits.

Transistor, Photovoltaic Output Optoisolators Applications

• Automotive battery management systems
• Motor control interfaces
• Isolated gate driving circuits

Transistor, Photovoltaic Output Optoisolators Procurement Notes

Verify the specific suffix DFGRQ1 to confirm the SOIC-4 package, reel packaging type, and automotive grade rating. Ensure the design accounts for the AC-input requirement on the LED side, as this differs from standard DC-input optocouplers. Confirm that the 3750 Vrms isolation rating meets the system's safety requirements. Check moisture sensitivity levels and storage conditions prior to assembly.

Transistor, Photovoltaic Output Optoisolators Selection Notes

Select this component when an AC input signal needs to be isolated and converted to a digital logic level for a microcontroller or driver. The high CTR range suits applications requiring robust signal integrity over wide temperature variations. Compare against other ISOM811x variants if different CTR ranges or insulation voltages are required. Ensure the SOIC-4 footprint matches the PCB layout constraints.

Transistor, Photovoltaic Output Optoisolators Part Context

This part belongs to the ISOM811x series of single-channel optical couplers from Texas Instruments. The series offers pin-compatible alternatives to traditional optocouplers, facilitating easier upgrades in existing designs. The ISOM8118 variant specifically targets applications needing higher current transfer ratios compared to lower CTR models in the same family.

Transistor, Photovoltaic Output Optoisolators Replacement Considerations

ISOM8118DFHRQ1: Offers a wider CTR range (295%-655%) but has a minimum operating temperature of -40°C instead of -55°C.

Transistor, Photovoltaic Output Optoisolators FAQ

What is the primary advantage of the AC-input feature?

It enables direct coupling to AC signals, eliminating the need for external rectifier components and simplifying the circuit design.

Does this device meet automotive reliability standards?

Yes, it is qualified according to AEC-Q100 standards, making it suitable for automotive applications.