IS281

Overview

The IS281 is a single-channel optoisolator manufactured by Isocom Components 2004 LTD, featuring a transistor output configuration. It provides an isolation voltage of 3750Vrms and operates within a temperature range of -55°C to 110°C. The device utilizes a DC input type with a typical forward voltage of 1.2V and a maximum DC forward current of 60 mA. Output specifications include a collector-emitter saturation voltage of up to 200mV and a maximum output voltage of 80V. The component supports a current transfer ratio ranging from 50% to 600% at 10mA input. Typical rise and fall times are 5µs and 3µs respectively, with a maximum output current per channel of 50mA.

Feature Summary

• Provides high-voltage electrical isolation between input and output circuits using infrared technology.
• Features a robust transistor output stage capable of handling significant load currents.
• Designed for reliable operation across extreme industrial temperature environments.
• Offers fast switching performance suitable for digital signal transmission applications.

Applications

• Industrial control systems requiring circuit isolation
• Power supply protection and monitoring circuits
• Smart metering and utility instrumentation
• Gas detection and environmental monitoring devices

Procurement Notes

Verify the specific ordering suffix to ensure the correct packaging format, such as tape and reel or cut tape, matches your assembly requirements. Confirm that the RoHS compliance status aligns with your environmental regulations. Check the moisture sensitivity level and storage conditions prior to soldering to maintain device integrity during the manufacturing process.

Selection Notes

Select this component when a single-channel isolation solution with a transistor output is required. Ensure the 3750Vrms isolation rating meets the safety standards of your application. Verify that the 50mA output current capability and 80V voltage rating are sufficient for the load interface. Consider the surface-mount package dimensions for PCB layout constraints.

Part Context

The IS281 belongs to the broader family of optocouplers produced by Isocom Components 2004 LTD. This manufacturer specializes in high-performance infrared optoelectronic devices, including various phototransistor and photodarlington outputs. The company positions its products as direct replacements for discontinued industry-standard components, offering flexible manufacturing capabilities.

Replacement Considerations

Public confirmed substitute part numbers: None available in provided documentation.