SI86SO20EE-AS4 Equivalent & Substitute Parts

Part Overview

The SI86SO20EE-AS4 is a general purpose digital isolator manufactured by Skyworks Solutions Inc., designed for automotive-grade applications requiring galvanic isolation. This 6000Vrms rated device features 2 unidirectional channels with 150Mbps data rate capability and operates across a wide supply voltage range of 2.25V to 5.5V. The part is currently in active production status with AEC-Q100 automotive qualification and ROHS3 compliance. Substitute parts are identified when equivalent electrical and mechanical parameters are maintained within the allowed specifications for this product category, ensuring functional interchangeability in target applications.

Substiute Parts

SI86SO20EE-AS4

Skyworks Solutions Inc.In Stock: 763SI86SO20EE-AS4 Datasheet

Current PartRFQ

SI86S620BE-AS4

Skyworks Solutions Inc.In Stock: 1115SI86S620BE-AS4 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SI86SO20EE-AS4 are identified based on strict equivalence of critical electrical and mechanical parameters. The substitution logic is based on the following allowed parameters:

Critical Matching Parameters:

• Isolation voltage rating: 6000Vrms (exact match required)
• Number of channels: 2 (exact match required)
• Channel configuration: Unidirectional with 2 inputs / 0 outputs (exact match required)
• Data rate: 150Mbps (exact match required)
• Supply voltage range: 2.25V ~ 5.5V (exact match required)
• Operating temperature range: -40°C ~ 125°C (exact match required)
• Package type: 8-SOIC (0.295", 7.50mm Width) (exact match required)
• Automotive qualification: AEC-Q100 (exact match required)
• Technology: Capacitive Coupling (exact match required)

Allowable Variation Parameters:

• Common Mode Transient Immunity (CMTI): May vary within acceptable range for the product category
• Propagation delay and pulse width distortion: Must remain within specified maximums
• Rise/Fall time: Must remain within specified typical values

The SI86S620BE-AS4 qualifies as a parametric equivalent based on matching all critical parameters while maintaining acceptable performance characteristics within the digital isolator category.

Parameter Comparison

Engineering Selection Recommendations

Both the SI86SO20EE-AS4 and SI86S620BE-AS4 are active production parts with identical automotive-grade AEC-Q100 qualification and ROHS3 compliance status. Selection between these parts is based on the following engineering criteria:

SI86SO20EE-AS4 Selection Criteria:

• Applications requiring maximum Common Mode Transient Immunity of 150kV/µs
• Designs where higher noise immunity margins are specified
• Systems with stringent EMI/RFI environment requirements

SI86S620BE-AS4 Selection Criteria:

• Applications where 100kV/µs CMTI specification is sufficient
• General purpose automotive isolation applications
• Higher inventory availability (1095 Pcs vs 709 Pcs)
• Equivalent performance for standard automotive digital isolation requirements

Both parts maintain identical electrical performance in propagation delay, pulse width distortion, rise/fall time, and all other critical timing parameters. Package footprint, thermal characteristics, and supply voltage operating ranges are identical. Selection should be based on specific application CMTI requirements and inventory availability.

Frequently Asked Questions (FAQ)

Q: Can SI86S620BE-AS4 be used as a direct replacement for SI86SO20EE-AS4 in existing designs?

A: Yes, the SI86S620BE-AS4 is a direct functional replacement for the SI86SO20EE-AS4 in applications where the 100kV/µs Common Mode Transient Immunity specification is acceptable. All other electrical and mechanical parameters are identical, including package type, pin configuration, and timing characteristics. No PCB layout modifications are required.

Q: What is the difference in Common Mode Transient Immunity between these parts?

A: The SI86SO20EE-AS4 provides 150kV/µs minimum CMTI, while the SI86S620BE-AS4 provides 100kV/µs minimum CMTI. This difference represents the maximum rate of change of voltage between isolated sides that the device can tolerate without introducing errors. Applications with high-speed switching or high dV/dt environments may require the higher CMTI rating of the SI86SO20EE-AS4.

Q: Are the package dimensions identical?

A: Yes, both parts use the 8-SOIC (0.295", 7.50mm Width) package with identical pin assignments and footprint. PCB designs are fully compatible without modification.

Q: Do both parts meet automotive qualification requirements?

A: Yes, both the SI86SO20EE-AS4 and SI86S620BE-AS4 are AEC-Q100 qualified automotive-grade components with identical qualification status and ROHS3 compliance.

Q: What is the operating temperature range for both parts?

A: Both parts operate across the identical temperature range of -40°C to 125°C, suitable for automotive under-hood and cabin applications.

Q: Are there any supply voltage differences between these parts?

A: No, both parts operate with identical supply voltage range of 2.25V to 5.5V, providing compatibility with 3.3V and 5V logic systems.

Q: Which part should be selected for new designs?

A: Selection should be based on application-specific CMTI requirements. If the application requires 150kV/µs CMTI, use SI86SO20EE-AS4. If 100kV/µs CMTI is sufficient, SI86S620BE-AS4 is acceptable. Both are active production parts with equivalent long-term availability.