SI8655BA-AS Equivalent & Substitute Parts

Part Overview

The SI8655BA-AS is an automotive-grade general purpose digital isolator manufactured by Skyworks Solutions Inc. This component provides galvanic isolation at 1000Vrms across 5 unidirectional channels using capacitive coupling technology. The device is qualified to AEC-Q100 automotive standards and operates across the industrial temperature range of -40°C to 125°C.

The SI8655BA-AS is classified as Active product status. Substitute parts are identified when equivalent electrical and mechanical parameters are required for design flexibility, supply chain optimization, or inventory management while maintaining identical functional performance and compliance certifications.

Substiute Parts

SI8655BA-AS

Skyworks Solutions Inc.In Stock: 1058SI8655BA-AS Datasheet

Current PartRFQ

SI8655BA-B-IS

Skyworks Solutions Inc.In Stock: 1202SI8655BA-B-IS Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SI8655BA-AS are identified based on strict electrical and mechanical parameter equivalence. The substitution logic is based on the following critical parameters that must remain identical:

• Isolation Voltage: 1000Vrms (determines safety and regulatory compliance)
• Channel Count and Configuration: 5 channels, unidirectional (5 input / 0 output)
• Data Rate: 150Mbps (defines signal integrity performance)
• Common Mode Transient Immunity: 35kV/µs (critical for automotive EMC performance)
• Propagation Delay: 13ns maximum for both rising and falling edges
• Pulse Width Distortion: 4.5ns maximum
• Supply Voltage Range: 2.5V to 5.5V
• Operating Temperature Range: -40°C to 125°C
• Package: 16-SOIC (0.295", 7.50mm Width)
• Technology: Capacitive Coupling
• Automotive Grade: AEC-Q100 qualification required

Parts meeting all these parameters are classified as parametric equivalents and direct substitutes. Variations in packaging options, moisture sensitivity level, or RoHS compliance status do not affect functional substitutability when all electrical and thermal specifications are identical.

Parameter Comparison

Engineering Selection Recommendations

The SI8655BA-B-IS is a direct parametric equivalent to the SI8655BA-AS. Both components share identical electrical specifications, thermal operating range, package geometry, and automotive qualification status. Selection between these parts is based on availability and supply chain considerations rather than functional differences.

Both parts maintain Active product status from Skyworks Solutions Inc. and carry AEC-Q100 automotive qualification, confirming suitability for automotive applications requiring 1000Vrms galvanic isolation with 5-channel unidirectional signal transmission.

The SI8655BA-B-IS carries additional RoHS3 compliance certification and REACH Unaffected status, which may be required for specific regional or customer specifications. When such compliance documentation is mandatory, the SI8655BA-B-IS is the appropriate selection. When compliance documentation is not a requirement, either part provides identical functional performance.

Frequently Asked Questions (FAQ)

Q: Can SI8655BA-B-IS be used as a direct replacement for SI8655BA-AS in existing designs?

A: Yes. All electrical parameters, thermal specifications, package dimensions, and automotive qualifications are identical. No circuit modifications or PCB layout changes are required.

Q: What is the difference between SI8655BA-AS and SI8655BA-B-IS?

A: The primary difference is compliance documentation. SI8655BA-B-IS includes RoHS3 compliance and REACH Unaffected status. Both parts are functionally identical with matching electrical performance, isolation voltage, channel configuration, data rate, and AEC-Q100 qualification.

Q: Are both parts suitable for automotive applications?

A: Yes. Both SI8655BA-AS and SI8655BA-B-IS carry AEC-Q100 automotive qualification and operate across the -40°C to 125°C temperature range required for automotive environments.

Q: Do these parts have identical package dimensions?

A: Yes. Both parts use the 16-SOIC (0.295", 7.50mm Width) surface mount package. PCB footprints and assembly processes are identical.

Q: What isolation voltage do these parts provide?

A: Both parts provide 1000Vrms galvanic isolation across 5 unidirectional channels, meeting high-voltage isolation requirements in automotive and industrial applications.

Q: Can these parts handle the same data rates?

A: Yes. Both parts support 150Mbps data rate with identical propagation delay (13ns maximum) and common mode transient immunity (35kV/µs).

Q: What supply voltage range is supported?

A: Both parts operate with supply voltages from 2.5V to 5.5V, providing flexibility for 3.3V and 5V logic systems.

Q: Are there any moisture sensitivity considerations?

A: Both parts have identical Moisture Sensitivity Level (MSL) rating of 2A (4 Weeks), requiring standard moisture control during storage and handling.