IS355

$0.66

Description：OPTOISOLATOR 3.75KV 1CH DARL
Series：-
Mfr：Isocom Components 2004 LTD
Package：Tape & Reel (TR),Cut Tape (CT)

SKU:69e7f0721c07 Category: Transistor, Photovoltaic Output Optoisolators Brand: Isocom Components 2004 LTD

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Product introduction

Product Detailed Parameters

Description：OPTOISOLATOR 3.75KV 1CH DARL
Series：-
Mfr：Isocom Components 2004 LTD
Package：Tape & Reel (TR),Cut Tape (CT)
Number of Channels：1
Voltage - Isolation：3750Vrms
Current Transfer Ratio (Min)：600% @ 1mA
Current Transfer Ratio (Max)：7500% @ 1mA
Turn On / Turn Off Time (Typ)：-
Rise / Fall Time (Typ)：4µs, 3µs
Input Type：DC
Output Type：Darlington
Voltage - Output (Max)：35V
Current - Output / Channel：80mA
Voltage - Forward (Vf) (Typ)：1.2V
Current - DC Forward (If) (Max)：50 mA
Vce Saturation (Max)：1V
Operating Temperature：-55°C ~ 100°C
Mounting Type：Surface Mount
Package / Case：4-SMD, Gull Wing
Supplier Device Package：-
Grade：-
Qualification：-

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IS355

Overview

The IS355 is a single-channel optically coupled isolator manufactured by Isocom Components. It features an infrared LED input paired with a Darlington transistor output, housed in a Mini-Flat surface-mount package. The device provides an isolation voltage of 3750 Vrms and operates within a temperature range of -55°C to +100°C. Key electrical parameters include a maximum collector-emitter voltage of 35V, a peak output current of 80mA per channel, and a maximum forward current of 50mA. Typical switching characteristics show rise and fall times of 4µs and 3µs respectively, with a nominal forward voltage of 1.2V.

Feature Summary

Integrates dual reverse-parallel infrared LEDs for AC input compatibility
Utilizes a high-gain Darlington phototransistor output stage
Designed for space-efficient surface-mount applications

Applications

AC mains signal detection and isolation
Industrial control system interface circuits
Power supply feedback loop isolation

Procurement Notes

Verify the specific suffix against official documentation to confirm packaging configuration and compliance status. Ensure the component matches the required Mini-Flat package dimensions and pinout for PCB layout compatibility. Cross-reference the manufacturer's latest datasheet for any updates on RoHS or lead-free certifications prior to final procurement.

Selection Notes

Select this component when AC input capability is required due to the internal reverse-parallel LED structure. The Darlington output offers high current transfer ratio suitable for driving logic inputs directly. Consider the 3750 Vrms isolation rating for safety-critical applications requiring robust galvanic separation between input and output circuits.

Part Context

The IS355 belongs to Isocom's Mini-Flat series of optocouplers, designed for compact electronic designs. This series emphasizes small footprint solutions while maintaining high isolation voltages. The part represents a specialized solution for applications needing both AC input handling and high-output gain in a surface-mount format.