IL221AT

$0.38

Description：OPTOISO 4KV DARL W/BASE 8-SOIC
Series：-
Mfr：Vishay Semiconductor Opto Division
Package：Tape & Reel (TR)

SKU:c7d909c22c6a Category: Transistor, Photovoltaic Output Optoisolators Brand: Vishay Semiconductor Opto Division

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Product introduction

IL221AT is listed in the Transistor, Photovoltaic Output Optoisolators range at ChipApex. The manufacturer field lists Vishay Semiconductor Opto Division. Its product description is OPTOISO 4KV DARL W/BASE 8-SOIC. Review the specifications below when checking this part for your BOM.

Transistor, Photovoltaic Output Optoisolators specifications for IL221AT

Description：OPTOISO 4KV DARL W/BASE 8-SOIC
Series：-
Mfr：Vishay Semiconductor Opto Division
Package：Tape & Reel (TR)
Number of Channels：1
Voltage - Isolation：4000Vrms
Current Transfer Ratio (Min)：100% @ 1mA
Current Transfer Ratio (Max)：-
Turn On / Turn Off Time (Typ)：-
Rise / Fall Time (Typ)：-
Input Type：DC
Output Type：Darlington with Base
Voltage - Output (Max)：30V
Current - Output / Channel：-
Voltage - Forward (Vf) (Typ)：1V
Current - DC Forward (If) (Max)：60 mA
Vce Saturation (Max)：1V
Operating Temperature：-55°C ~ 100°C
Mounting Type：Surface Mount
Package / Case：8-SOIC (0.154", 3.90mm Width)
Supplier Device Package：8-SOIC
Grade：-
Qualification：-

Transistor, Photovoltaic Output Optoisolators datasheet and documents for IL221AT

IL221AT

Transistor, Photovoltaic Output Optoisolators Overview

The IL221AT is a single-channel photodarlington output optocoupler manufactured by Vishay Semiconductor Opto Division. It features a gallium arsenide infrared LED emitter paired with a silicon NPN photodarlington transistor, providing high current transfer ratio (CTR) exceeding 100%. The device offers 4000 Vrms isolation voltage and operates within a temperature range of -55°C to +100°C. Packaged in an 8-SOIC surface-mount format, it supports a maximum forward current of 60 mA and a collector-emitter breakdown voltage of 30 V.

Transistor, Photovoltaic Output Optoisolators Feature Summary

High current transfer ratio utilizing a photodarlington output structure
Robust 4000 Vrms insulation voltage for enhanced safety isolation
Integrated base connection on the photodarlington transistor for gain control
Compliant with UL recognition and VDE approval standards

Transistor, Photovoltaic Output Optoisolators Applications

Solid-state relay driver circuits
Industrial process control signal isolation
Power supply feedback loop isolation
Microcontroller interface protection

Transistor, Photovoltaic Output Optoisolators Procurement Notes

Verify that the specific order matches the IL221AT part number rather than the related IL222AT or IL223AT variants, as pin configurations may differ. Confirm RoHS compliance status and ensure the SOIC-8 package dimensions align with the target PCB footprint. Request official datasheets to validate electrical parameters against application requirements before finalizing procurement.

Transistor, Photovoltaic Output Optoisolators Selection Notes

Select this component when high gain is required to drive loads directly from low-current logic signals. The integrated base terminal allows for external adjustment of switching speed and sensitivity. Ensure the operating environment stays within the specified -55°C to +100°C range. Consider the 4000 Vrms isolation rating for applications requiring strict separation between primary and secondary circuits.

Transistor, Photovoltaic Output Optoisolators Part Context

This device belongs to the IL221AT/IL222AT/IL223AT family of photodarlington optocouplers. While sharing similar internal structures, these variants differ in pinout arrangements and specific electrical characteristics. The IL221AT specifically provides a standard configuration suitable for general-purpose isolation tasks where high CTR is beneficial.