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IL221AT The Vishay IL221AT is a high current transfer ratio optocoupler featuring a gallium arsenide infrared LED and a silicon NPN photodarlington transistor. It is designed for low input current applications, enabling easy interfacing from CMOS to LSTTL or TTL.
Mfr Part #:

IL221AT

Available from 1 distributors
Mfr Name: Siemens
Siemens
The Vishay IL221AT is a high current transfer ratio optocoupler featuring a gallium arsenide infrared LED and a silicon NPN photodarlington transistor. It is designed for low input current applications, enabling easy interfacing from CMOS to LSTTL or TTL.
✓ Total Stock: 484 pcs
$ Price Range: $0.33

IL221AT Available from 1 distributor

✓ Authorised
✓ Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
PROSOFT ELECTRONICS ✓
Non-Authorised Inventory information
484 pcs
On Request
484 pcs On Request 1 On Request On Request 01+ On Request On Request
DistyParts aggregates offers from multiple distributors. Final prices, lead times and terms are subject to the distributors' discretion and may change without prior notice. DistyParts is not liable for any discrepancies.

IL221AT Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Mounting Type
Power Dissipation
SVHC Present
Tape & Reel
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IL221AT Description

Short technical summary and product information.

The IL221AT from Vishay is a high-performance optocoupler designed for efficient signal isolation. It incorporates a gallium arsenide infrared LED emitter and a silicon NPN photodarlington transistor detector, offering a high current transfer ratio (CTR) tested at 1.0 mA LED current. This low drive current capability makes it suitable for interfacing with CMOS, LSTTL, and TTL logic levels.

 

The device is housed in an industry-standard SOIC-8 surface mountable package, making it ideal for high-density applications and compatible with standard surface mount assembly processes, including dual wave, vapor phase, and IR reflow soldering. The optocoupler provides an isolation test voltage of 4000 VRMS, ensuring robust electrical isolation between the input and output circuits.

 

Key electrical specifications include a peak reverse voltage of 6.0 V, a forward continuous current of 60 mA, and a power dissipation of 90 mW. The collector emitter breakdown voltage is rated at 30 V. These parameters, combined with its photodarlington output, make the IL221AT a versatile component for various industrial and consumer electronics applications requiring reliable isolation.

IL221AT Quick Information

Product Type: Optocoupler
Canonical Name: IL221AT Photodarlington Output Optocoupler
Subcategory: Photodarlington Output

IL221AT Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected

IL221AT Estimated Pricing

Qty Low High
1+ $0.33 $0.33

Estimated market price range - modelled values for guidance only, not live distributor offers.

IL221AT Features

  • High current transfer ratio optocoupler.
  • Low input current for CMOS/TTL interfacing.
  • 4000 VRMS isolation test voltage.
  • Industry standard SOIC-8 surface mount package.
  • Available on tape and reel.

IL221AT Applications

  • Ideal for signal isolation circuits.
  • Suitable for low power control applications.
  • Used in high-density PCB designs.
  • Facilitates CMOS to LSTTL/TTL interfacing.

IL221AT FAQs

6 frequently asked questions generated from this part’s specifications.
What is the isolation voltage of the IL221AT?

4000 VRMS.

What is the package type of the IL221AT?

SOIC-8 surface mount.

What is the collector-emitter breakdown voltage?

30 V.

What is the forward continuous current rating?

60 mA.

What is the power dissipation of the IL221AT?

90 mW, with linear derating above 25°C at 1.2 mW/°C.

What is the mounting type?

Surface mount.

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