SI8711CD-B-IMR Equivalent & Substitute Parts

Part Overview

The SI8711CD-B-IMR is a General Purpose Digital Isolator manufactured by Skyworks Solutions Inc., featuring 5000Vrms isolation voltage, 1 channel unidirectional configuration, and 1Mbps data rate with 20kV/µs common mode transient immunity. This component is classified as Obsolete, necessitating identification of active equivalent parts for new designs and ongoing production requirements. The part is packaged in 8-VELGA (8-LGA 10x12.5) surface mount configuration with 762 units currently in stock.

Substiute Parts

SI8711CD-B-IMR

Skyworks Solutions Inc.In Stock: 839SI8711CD-B-IMR Datasheet

Current PartRFQ

SI8711CC-B-IPR

Skyworks Solutions Inc.In Stock: 1018SI8711CC-B-IPR Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SI8711CD-B-IMR is determined by the following critical parameters:

Core Functional Parameters:

• Manufacturer: Skyworks Solutions Inc. (same family)
• Base Product Number: SI8711 (same series)
• Technology: Capacitive Coupling
• Type: General Purpose Digital Isolator
• Number of Channels: 1
• Channel Type: Unidirectional
• Common Mode Transient Immunity: 20kV/µs (minimum requirement)
• Data Rate: 1Mbps
• Voltage - Supply: 3V ~ 30V range
• Operating Temperature: -40°C ~ 125°C

Allowable Variation Parameters:

• Voltage - Isolation: Substitute must meet or exceed 5000Vrms requirement
• Package / Case: Different surface mount packages acceptable if mechanical fit permits
• Product Status: Active status preferred for ongoing availability
• Propagation Delay, Pulse Width Distortion, Rise/Fall Time: Must remain within specified maximums

The SI8711CC-B-IPR qualifies as a substitute despite lower isolation voltage (3750Vrms vs. 5000Vrms) when application requirements permit reduced isolation specification, maintaining all other critical functional parameters within acceptable ranges.

Parameter Comparison

Engineering Selection Recommendations

For SI8711CD-B-IMR Replacement:

The SI8711CC-B-IPR is the designated substitute part from Skyworks Solutions Inc. within the SI8711 digital isolator family. Selection of this substitute is appropriate when:

1. Product Status Requirement: The original SI8711CD-B-IMR is Obsolete. The SI8711CC-B-IPR maintains Active status, ensuring long-term availability and manufacturing support.

2. Isolation Voltage Specification: Applications requiring 5000Vrms isolation must retain the SI8711CD-B-IMR or identify alternative sources. Applications tolerating 3750Vrms isolation can transition to SI8711CC-B-IPR without functional degradation.

3. Compliance and Certification: Both parts carry identical ECCN (EAR99) and HTSUS (8542.39.0001) classifications, maintaining regulatory compliance across substitution.

4. Functional Equivalence: All timing parameters (propagation delay, pulse width distortion, rise/fall time), data rate, common mode transient immunity, and supply voltage range remain identical, ensuring signal integrity and system performance.

5. Package Consideration: The SI8711CC-B-IPR uses 8-SMD Gull Wing packaging versus the original 8-VELGA (8-LGA) package. PCB layout redesign is required to accommodate the different footprint and pin configuration.

6. Inventory and Lead Time: The SI8711CC-B-IPR has 956 units in stock, providing immediate availability for production requirements.

Frequently Asked Questions (FAQ)

Q: Can SI8711CC-B-IPR directly replace SI8711CD-B-IMR without PCB modification?

A: No. The SI8711CC-B-IPR uses 8-SMD Gull Wing packaging while the SI8711CD-B-IMR uses 8-VELGA (8-LGA 10x12.5) packaging. Different footprints and pin layouts require PCB redesign. Direct socket substitution is not possible.

Q: What is the isolation voltage difference, and does it affect compatibility?

A: The SI8711CD-B-IMR provides 5000Vrms isolation; the SI8711CC-B-IPR provides 3750Vrms isolation. Substitution is valid only for applications where 3750Vrms isolation meets the system requirement. Applications requiring 5000Vrms isolation cannot use the SI8711CC-B-IPR.

Q: Are the timing characteristics identical between these parts?

A: Yes. Propagation delay (60ns maximum for both tpLH and tpHL), pulse width distortion (20ns maximum), and rise/fall time (15ns typical rise, 5ns typical fall) are identical. Signal timing performance is equivalent.

Q: What is the impact of the different packaging formats?

A: The SI8711CD-B-IMR packaging format is not specified in the data provided. The SI8711CC-B-IPR is supplied in Tape & Reel (TR) format. Confirm packaging requirements for your production process; reel format may require feeder compatibility verification.

Q: Are both parts rated for the same operating temperature range?

A: Yes. Both parts operate across -40°C to 125°C, maintaining identical thermal performance specifications.

Q: Do both parts have the same moisture sensitivity requirements?

A: Yes. Both parts carry MSL 3 (168 Hours) classification, requiring identical moisture control and storage protocols during handling and assembly.

Q: What supply voltage range do these parts support?

A: Both parts support 3V to 30V supply voltage range, providing identical flexibility for various system power architectures.