IL 611A-1 General Purpose Digital Isolator Equivalent & Substitute Parts

Part Overview

The IL 611A-1 is a general purpose digital isolator manufactured by NVE Corp/Isolation Products, utilizing Giant Magnetoresistive (GMR) technology to provide 2500Vrms isolation across 2 channels. This component is classified as obsolete, which necessitates identification of equivalent and substitute parts for ongoing design support and procurement continuity. The IL 611A-1 operates at 10Mbps data rate with 15kV/µs common mode transient immunity in an 8-MSOP surface mount package.

Substiute Parts

IL 611A-1

NVE Corp/Isolation ProductsIn Stock: 1187IL 611A-1 Datasheet

Current PartRFQ

IL 611A-1E

NVE Corp/Isolation ProductsIn Stock: 728IL 611A-1E Datasheet

DirectRFQ

HCPL-9030-300E

Broadcom LimitedIn Stock: 742HCPL-9030-300E Datasheet

SimilarRFQ

HCPL-9030-500E

Broadcom LimitedIn Stock: 939HCPL-9030-500E Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the IL 611A-1 is determined by strict equivalence across the following critical parameters:

Primary Substitution Criteria:

• Voltage isolation rating: 2500Vrms
• Number of channels: 2
• Channel configuration: Unidirectional (2 inputs / 0 outputs)
• Common mode transient immunity: 15kV/µs minimum
• Supply voltage range: 3V ~ 5.5V
• Mounting type: Surface Mount
• Technology: GMR (Giant Magnetoresistive)

Substitution Categories:

Direct Equivalent: IL 611A-1E represents the active production variant of the IL 611A-1 base product. This part maintains identical electrical specifications and package form factor, differing only in product status (Active vs. Obsolete) and packaging format (Tube vs. standard).

Similar Equivalents: HCPL-9030-300E and HCPL-9030-500E (Broadcom Limited) satisfy all primary substitution criteria with enhanced performance characteristics. These parts maintain the 2500Vrms isolation, 2-channel unidirectional configuration, 15kV/µs CMTI, and 3V-5.5V supply range. Differences exist in data rate (110MBd vs. 10Mbps), propagation delay, and package form factor (8-SMD Gull Wing vs. 8-MSOP).

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (Preferred):

IL 611A-1E is the recommended substitute when form factor and package compatibility are critical. This part is the active production equivalent of the obsolete IL 611A-1, maintaining identical electrical performance and 8-MSOP package dimensions. IL 611A-1E achieves ROHS3 compliance and is available in Tube packaging. The operating temperature range narrows to -40°C ~ 85°C; applications requiring the full -55°C ~ 125°C range must evaluate this limitation against system requirements.

For Enhanced Performance Applications:

HCPL-9030-300E and HCPL-9030-500E provide superior performance characteristics while maintaining all critical isolation and CMTI specifications. These Broadcom parts deliver 110MBd data rate (11x faster than IL 611A-1), reduced propagation delays (15ns vs. 75ns/25ns), and lower pulse width distortion (3ns). Both achieve ROHS3 compliance and support the full -55°C ~ 125°C operating temperature range. Package form factor differs (8-SMD Gull Wing vs. 8-MSOP); PCB layout and assembly process compatibility must be evaluated.

Packaging and Compliance Considerations:

• IL 611A-1E: Tube packaging, ROHS3 compliant, active product status
• HCPL-9030-300E: Tube packaging, ROHS3 compliant, active product status
• HCPL-9030-500E: Tape & Reel packaging, ROHS3 compliant, active product status

All substitute parts maintain RoHS3 compliance and unlimited moisture sensitivity level (MSL 1), eliminating compliance barriers for new designs.

Frequently Asked Questions (FAQ)

Q: Can IL 611A-1E be used as a direct replacement for IL 611A-1?

A: IL 611A-1E is electrically and mechanically equivalent to IL 611A-1 in the 8-MSOP package. The primary difference is product status (Active vs. Obsolete) and operating temperature range (-40°C ~ 85°C vs. -55°C ~ 125°C). Verify that your application does not require operation below -40°C or above 85°C.

Q: What are the key differences between IL 611A-1 and HCPL-9030 series?

A: Both maintain 2500Vrms isolation, 2-channel unidirectional configuration, and 15kV/µs CMTI. HCPL-9030 series offers 11x higher data rate (110MBd vs. 10Mbps), significantly lower propagation delays (15ns vs. 75ns/25ns), and reduced pulse width distortion (3ns). Package form factor differs: HCPL-9030 uses 8-SMD Gull Wing while IL 611A-1 uses 8-MSOP.

Q: Are all substitute parts RoHS compliant?

A: IL 611A-1 is RoHS non-compliant. IL 611A-1E, HCPL-9030-300E, and HCPL-9030-500E all achieve ROHS3 compliance, suitable for applications with RoHS requirements.

Q: What is the difference between HCPL-9030-300E and HCPL-9030-500E?

A: Both parts are electrically identical. The difference is packaging format: HCPL-9030-300E is supplied in Tube packaging, while HCPL-9030-500E is supplied in Tape & Reel (TR) format. Select based on assembly process requirements and volume.

Q: Can I use HCPL-9030 series in existing IL 611A-1 PCB layouts?

A: No. HCPL-9030 series uses 8-SMD Gull Wing package while IL 611A-1 uses 8-MSOP package. Pin pitch and footprint differ; PCB redesign is required. Electrical compatibility is confirmed, but physical layout modification is necessary.

Q: What is the operating temperature range for each part?

A: IL 611A-1 and HCPL-9030 series: -55°C ~ 125°C. IL 611A-1E: -40°C ~ 85°C. Select IL 611A-1E only if your application operates within -40°C ~ 85°C range.

Q: Are all parts available in current inventory?

A: IL 611A-1: 1095 Pcs. IL 611A-1E: 693 Pcs. HCPL-9030-300E: 675 Pcs. HCPL-9030-500E: 869 Pcs. All parts are listed as New Original In Stock.