IL 712-1E Digital Isolator Equivalent & Substitute Parts

Part Overview

The IL 712-1E is a general purpose digital isolator manufactured by NVE Corp/Isolation Products, part of the IsoLoop® series. This component provides galvanic isolation for digital signals with 1000Vrms isolation voltage, 2 channels, and 110Mbps data rate using Giant Magnetoresistive (GMR) technology. The IL 712-1E is discontinued at DiGi Electronics, necessitating identification of equivalent and substitute parts for ongoing design requirements and procurement needs.

Substiute Parts

IL 712-1E

NVE Corp/Isolation ProductsIn Stock: 1107IL 712-1E Datasheet

Current PartRFQ

IL 712-1ETR7

NVE Corp/Isolation ProductsIn Stock: 3266IL 712-1ETR7 Datasheet

DirectRFQ

HCPL-9030-500E

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

SimilarRFQ

HCPL-9031-300

Broadcom LimitedIn Stock: 936HCPL-9031-300 Datasheet

SimilarRFQ

HCPL-9031-300E

Broadcom LimitedIn Stock: 1209HCPL-9031-300E Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the IL 712-1E digital isolator is determined by the following critical parameters:

Mandatory Compatibility Parameters:

• Number of Channels: 2
• Channel Type: Unidirectional
• Inputs - Side 1/Side 2: 1/1
• Voltage - Supply: 3V ~ 5.5V
• Mounting Type: Surface Mount
• Technology: GMR (Giant Magnetoresistive)
• Data Rate: 110Mbps or higher
• Propagation Delay: 15ns or lower
• Pulse Width Distortion: 3ns or lower

Allowable Variation Parameters:

• Voltage - Isolation: Equal to or greater than 1000Vrms
• Common Mode Transient Immunity: Equal to or greater than 100kV/µs
• Operating Temperature: Equal to or wider than -40°C ~ 100°C
• Package / Case: Functionally equivalent surface mount packages
• RoHS Status: ROHS3 Compliant preferred for new designs

Substitute parts are grouped into two categories: Direct Manufacturer Equivalents (same manufacturer, same base product number) and Similar Cross-Manufacturer Alternatives (different manufacturer, equivalent electrical and mechanical specifications).

Parameter Comparison

Engineering Selection Recommendations

IL 712-1ETR7 (Direct Manufacturer Equivalent)

The IL 712-1ETR7 is the primary substitute for the IL 712-1E. Both components are manufactured by NVE Corp and share the same base product number (IL 712). The IL 712-1ETR7 maintains identical electrical performance specifications including 110Mbps data rate, 15ns propagation delay, and 3ns pulse width distortion. The key difference is enhanced isolation voltage (2500Vrms versus 1000Vrms) and packaging format (Tape & Reel versus bulk). The IL 712-1ETR7 is currently active in production with 3225 units in stock. This part is ROHS3 compliant and carries EAR99 export classification. The IL 712-1ETR7 is the recommended first choice for direct replacement in new designs and procurement.

HCPL-9031-300E (Cross-Manufacturer Substitute)

The HCPL-9031-300E manufactured by Broadcom Limited is a functionally equivalent substitute with ROHS3 compliance and active product status. This part maintains the critical electrical parameters: 2 channels with 1/1 input configuration, 110MBd data rate, 15ns propagation delay, and 3ns pulse width distortion. The HCPL-9031-300E provides enhanced isolation voltage (2500Vrms) and extended operating temperature range (-55°C ~ 125°C). Package differences exist (8-SMD Gull Wing versus 8-MSOP), requiring PCB layout verification. With 1111 units in stock and EAR99 classification, this part is suitable for applications where cross-manufacturer sourcing is acceptable.

HCPL-9031-300 (Cross-Manufacturer Substitute with Compliance Limitation)

The HCPL-9031-300 is electrically identical to the HCPL-9031-300E but carries RoHS non-compliant status. This part is not recommended for new designs requiring ROHS3 compliance. Existing designs with established RoHS exemptions may use this part with 882 units available in stock.

HCPL-9030-500E (Cross-Manufacturer Substitute with Channel Configuration Difference)

The HCPL-9030-500E differs in channel input configuration (2/0 versus 1/1), making it suitable only for applications requiring unidirectional isolation on a single side. This part is not recommended as a direct substitute for the IL 712-1E due to incompatible channel architecture.

Frequently Asked Questions (FAQ)

Q: Can the IL 712-1ETR7 directly replace the IL 712-1E in existing designs?

A: Yes. The IL 712-1ETR7 maintains identical electrical performance specifications and pin configuration. The primary difference is packaging format (Tape & Reel versus bulk). PCB layout and assembly processes remain unchanged. The enhanced isolation voltage (2500Vrms) provides additional safety margin without affecting circuit operation.

Q: What are the package compatibility considerations when using Broadcom HCPL-9031 series parts?

A: The HCPL-9031-300E uses 8-SMD Gull Wing packaging versus the IL 712-1E's 8-MSOP format. While both are 8-pin surface mount packages, the physical dimensions and lead geometry differ. PCB footprint redesign is required. Verify land pattern compatibility with your assembly equipment before implementation.

Q: Why does the HCPL-9030-500E have a different input configuration (2/0)?

A: The HCPL-9030-500E is optimized for applications requiring two input channels on one side and no isolation on the other side. The IL 712-1E requires symmetric 1/1 channel configuration. The HCPL-9030-500E is not suitable for applications requiring bidirectional isolation on both sides.

Q: Is the IL 712-1ETR7 available in the same packaging as the IL 712-1E?

A: The IL 712-1ETR7 uses Tape & Reel (TR) packaging for automated assembly, while the IL 712-1E was supplied in bulk packaging. Both use the same 8-MSOP package format. Tape & Reel packaging is standard for current production and does not affect component functionality or PCB mounting.

Q: What compliance certifications should I verify for new designs?

A: For new designs, specify ROHS3 compliant parts. The IL 712-1ETR7 and HCPL-9031-300E both carry ROHS3 compliance. Verify REACH status (both are REACH Unaffected) and export classification (both are EAR99) for your application region. The HCPL-9031-300 is RoHS non-compliant and should not be used in new designs.

Q: Can I use the HCPL-9031-300E in applications with extended temperature requirements?

A: Yes. The HCPL-9031-300E operates from -55°C to 125°C, exceeding the IL 712-1E specification of -40°C to 100°C. This extended range is suitable for industrial and automotive applications requiring wider temperature operation.

Q: What is the minimum isolation voltage required for my application?

A: The IL 712-1E provides 1000Vrms isolation. All substitute parts (IL 712-1ETR7, HCPL-9031-300E, HCPL-9031-300, HCPL-9030-500E) provide 2500Vrms isolation, which exceeds the original specification. If your application requires exactly 1000Vrms isolation, the IL 712-1ETR7 is the appropriate choice as it maintains the same isolation voltage class.

Q: How does Common Mode Transient Immunity (CMTI) affect substitution?

A: The IL 712-1E specifies 100kV/µs CMTI, while Broadcom HCPL-9031 series parts specify 15kV/µs. The IL 712-1E and IL 712-1ETR7 both provide superior CMTI performance. For applications with high-speed switching or noisy environments, the IL 712-1ETR7 is preferred over Broadcom alternatives.