IL 261-3 General Purpose Digital Isolator Equivalent & Substitute Parts

Part Overview

The IL 261-3 is a general purpose digital isolator manufactured by NVE Corp/Isolation Products, part of the IsoLoop® IL261 series. This component provides galvanic isolation using Giant Magnetoresistive (GMR) technology with 2500Vrms isolation voltage across 5 channels. The IL 261-3 is classified as an active product and is currently in production with 738 pieces available in stock.

Identification of equivalent and substitute parts is necessary to ensure design flexibility, manage supply chain continuity, and accommodate varying compliance requirements across different manufacturing and distribution channels.

Substiute Parts

IL 261-3

NVE Corp/Isolation ProductsIn Stock: 786IL 261-3 Datasheet

Current PartRFQ

IL 261-3E

NVE Corp/Isolation ProductsIn Stock: 4807IL 261-3E Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the IL 261-3 is determined by strict equivalence across the following critical parameters:

Electrical Specifications:

• Isolation voltage: 2500Vrms
• Number of channels: 5
• Channel configuration: 4 inputs on Side 1, 1 input on Side 2
• Data rate: 110Mbps
• Common mode transient immunity: 30kV/µs minimum
• Supply voltage range: 3V ~ 5.5V
• Operating temperature range: -40°C ~ 85°C

Physical Specifications:

• Package type: 16-SOIC (0.154", 3.90mm Width)
• Mounting type: Surface Mount
• Moisture sensitivity level: 1 (Unlimited)

Technology & Series:

• Technology: GMR (Giant Magnetoresistive)
• Series: IsoLoop® IL261

The IL 261-3E qualifies as a direct substitute based on identical electrical performance, physical packaging, and functional specifications. The primary distinction between these parts relates to regulatory compliance status.

Parameter Comparison

Engineering Selection Recommendations

IL 261-3 Selection Criteria: The IL 261-3 is appropriate for applications where RoHS non-compliance is acceptable or where legacy component specifications are required. This part maintains active product status and is available in moderate quantities.

IL 261-3E Selection Criteria: The IL 261-3E is the preferred substitute for new designs and applications subject to RoHS3 compliance requirements. This variant maintains identical electrical and mechanical specifications while meeting current regulatory standards. The IL 261-3E is available in significantly higher inventory quantities (4741 pieces), providing improved supply chain reliability.

Compliance Considerations: Both parts are REACH Unaffected and share identical ECCN (5A991A) and HTSUS (8542.39.0001) classifications. The distinction between these parts is limited to RoHS compliance status. Selection between IL 261-3 and IL 261-3E should be based on the specific regulatory requirements of the target application and end-use market.

Frequently Asked Questions (FAQ)

Q: Are IL 261-3 and IL 261-3E electrically interchangeable?

A: Yes. Both parts are manufactured by NVE Corp/Isolation Products and share identical electrical specifications, including isolation voltage (2500Vrms), data rate (110Mbps), common mode transient immunity (30kV/µs), and all timing parameters. They are functionally equivalent in circuit operation.

Q: Can IL 261-3E be used as a direct replacement for IL 261-3 on existing PCBs?

A: Yes. Both parts use the 16-SOIC (0.154", 3.90mm Width) surface mount package with identical pinout and mechanical dimensions. No PCB redesign or layout modification is required for substitution.

Q: What is the primary difference between IL 261-3 and IL 261-3E?

A: The IL 261-3E is ROHS3 compliant, while the IL 261-3 is RoHS non-compliant. All other specifications, including electrical performance, package type, and operating characteristics, are identical.

Q: Which part should be selected for new product designs?

A: The IL 261-3E is recommended for new designs due to its ROHS3 compliance status and higher inventory availability (4741 pieces versus 738 pieces). This selection aligns with current regulatory standards and provides improved supply chain continuity.

Q: Are there any thermal or reliability differences between these parts?

A: No. Both parts share identical operating temperature ranges (-40°C ~ 85°C), moisture sensitivity levels (MSL 1 - Unlimited), and all thermal characteristics. Reliability and thermal performance are equivalent.

Q: What is the moisture sensitivity level for both parts?

A: Both IL 261-3 and IL 261-3E have a Moisture Sensitivity Level (MSL) of 1, which indicates unlimited shelf life without special moisture control requirements.

Q: Are both parts available in the same packaging format?

A: Yes. Both parts are supplied in Tube packaging and use the 16-SOIC (0.154", 3.90mm Width) surface mount package. Packaging and handling specifications are identical.