IL 261 Digital Isolator Equivalent & Substitute Parts

Part Overview

The IL 261 is a general purpose digital isolator manufactured by NVE Corp/Isolation Products, part of the IsoLoop® series. This component provides galvanic isolation using Giant Magnetoresistive (GMR) technology with a 2500Vrms isolation voltage rating across 5 channels. The IL 261 operates at data rates up to 110Mbps with a common mode transient immunity of 30kV/µs, housed in a 16-SOIC surface mount package.

The IL 261 is classified as an active product with current inventory availability. Identifying equivalent and substitute parts is necessary to ensure design flexibility, manage supply chain continuity, and accommodate varying compliance requirements across different manufacturing batches and procurement scenarios.

Substiute Parts

IL 261

NVE Corp/Isolation ProductsIn Stock: 719IL 261 Datasheet

Current PartRFQ

IL 261E

NVE Corp/Isolation ProductsIn Stock: 1391IL 261E Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the IL 261 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

Mechanical & Packaging Specifications:

• Package type: 16-SOIC (0.295", 7.50mm Width)
• Mounting type: Surface Mount
• Moisture sensitivity level: 1 (Unlimited)

Technology & Series:

• Technology: GMR (Giant Magnetoresistive)
• Series: IsoLoop®
• Manufacturer: NVE Corp/Isolation Products

The IL 261E qualifies as a direct substitute because it maintains identical electrical performance, channel configuration, isolation voltage, data rate, CMTI rating, supply voltage range, operating temperature range, package type, and mounting method. The primary distinction between the IL 261 and IL 261E is the RoHS compliance status.

Parameter Comparison

Engineering Selection Recommendations

IL 261: Select this part number when RoHS non-compliance is acceptable or when legacy design requirements specify this exact variant. The IL 261 maintains active product status with 648 pieces in current inventory.

IL 261E: Select this part number for designs requiring ROHS3 compliance. The IL 261E is ROHS3 compliant and maintains identical electrical and mechanical specifications to the IL 261. Higher inventory availability (1349 pieces) supports extended production runs. Both parts carry REACH Unaffected status and maintain active product classification.

The choice between IL 261 and IL 261E is determined solely by regulatory compliance requirements. No functional or performance differences exist between these variants.

Frequently Asked Questions (FAQ)

Q: Can IL 261E be used as a direct replacement for IL 261 in existing designs?

A: Yes. The IL 261E is electrically and mechanically identical to the IL 261. Both parts feature identical isolation voltage (2500Vrms), channel configuration (5 channels: 4/1), data rate (110Mbps), CMTI (30kV/µs), supply voltage range (3V ~ 5.5V), operating temperature range (-40°C ~ 85°C), and 16-SOIC package. The only difference is RoHS compliance status.

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

A: The IL 261 is RoHS non-compliant, while the IL 261E is ROHS3 compliant. All other electrical, mechanical, and performance specifications are identical.

Q: Are there any package or pinout differences between IL 261 and IL 261E?

A: No. Both parts use the identical 16-SOIC (0.295", 7.50mm Width) surface mount package with the same pinout and mechanical footprint.

Q: Which part should be selected for new designs?

A: Selection depends on regulatory requirements. For designs requiring RoHS3 compliance, use IL 261E. For applications where RoHS compliance is not mandated, either part is acceptable based on availability and procurement preferences.

Q: Do IL 261 and IL 261E have different lead times or availability?

A: Current inventory shows IL 261E has higher stock availability (1349 pieces) compared to IL 261 (648 pieces). Lead times depend on supplier and procurement channels.

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

A: No. Both parts share identical operating temperature range (-40°C ~ 85°C), moisture sensitivity level (MSL 1 - Unlimited), and all thermal characteristics.