SI8621ED-AS Equivalent & Substitute Parts

Part Overview

The SI8621ED-AS is a general purpose digital isolator manufactured by Skyworks Solutions Inc. designed for automotive applications. This 2-channel capacitive coupling isolator provides 5000Vrms isolation with a data rate of 150Mbps and operates across the automotive temperature range of -40°C to 125°C. The device is qualified to AEC-Q100 standards and is currently in active production status with 912 pieces available in stock.

Substitute parts are identified when equivalent electrical and mechanical parameters are maintained across the same product family, enabling direct replacement in circuit designs without functional degradation.

Substiute Parts

SI8621ED-AS

Skyworks Solutions Inc.In Stock: 965SI8621ED-AS Datasheet

Current PartRFQ

SI8622BD-AS

Skyworks Solutions Inc.In Stock: 1930SI8622BD-AS Datasheet

Parametric EquivalentRFQ

SI8622ED-AS

Skyworks Solutions Inc.In Stock: 1731SI8622ED-AS Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SI8621ED-AS are identified based on strict equivalence across the following critical parameters:

Electrical Equivalence Criteria:

• Isolation voltage: 5000Vrms
• Number of channels: 2
• Data rate: 150Mbps
• Common mode transient immunity: 35kV/µs minimum
• Supply voltage range: 2.5V ~ 5.5V
• Propagation delay specifications: 13ns maximum (tpLH and tpHL)
• Pulse width distortion: 4.5ns maximum

Mechanical & Compliance Equivalence Criteria:

• Package type: 16-SOIC (0.295", 7.50mm Width)
• Mounting type: Surface Mount
• Grade: Automotive
• Qualification: AEC-Q100
• Operating temperature range: -40°C ~ 125°C
• Moisture sensitivity level: 2A (4 Weeks)

The SI8622ED-AS and SI8622BD-AS maintain identical electrical and mechanical specifications to the SI8621ED-AS, differing only in base product number designation within the SI8600 series family. Both substitute parts are manufactured by Skyworks Solutions Inc. and carry active product status.

Parameter Comparison

Engineering Selection Recommendations

All three parts—SI8621ED-AS, SI8622ED-AS, and SI8622BD-AS—are active products manufactured by Skyworks Solutions Inc. with identical electrical and mechanical specifications. Selection between these parts is based on inventory availability and supply chain considerations.

Current inventory status:

• SI8621ED-AS: 912 pieces
• SI8622ED-AS: 1699 pieces
• SI8622BD-AS: 1883 pieces

All parts maintain AEC-Q100 automotive qualification and are suitable for applications requiring 5000Vrms isolation in the -40°C to 125°C operating range. The 16-SOIC package and surface mount configuration are consistent across all three options, enabling direct PCB layout compatibility.

Frequently Asked Questions (FAQ)

Q: Can SI8622ED-AS or SI8622BD-AS be used as direct replacements for SI8621ED-AS?

A: Yes. Both substitute parts maintain identical electrical specifications including 5000Vrms isolation, 150Mbps data rate, 35kV/µs CMTI, and identical timing parameters. The 16-SOIC package dimensions and surface mount configuration are equivalent, enabling direct PCB substitution without design modification.

Q: What are the key differences between SI8621ED-AS and the substitute parts?

A: The parts differ only in base product number designation (SI8621 versus SI8622). All electrical parameters, mechanical specifications, automotive qualification, and operating characteristics are identical.

Q: Are all three parts qualified to the same automotive standards?

A: Yes. SI8621ED-AS, SI8622ED-AS, and SI8622BD-AS all carry AEC-Q100 qualification and are rated for automotive grade applications across the -40°C to 125°C temperature range.

Q: Does the package type remain the same across all substitute parts?

A: Yes. All three parts use the 16-SOIC (0.295", 7.50mm Width) surface mount package with identical pin configuration and PCB footprint requirements.

Q: What is the moisture sensitivity level for these parts?

A: All three parts are classified as MSL 2A with a 4-week floor life rating, requiring standard moisture control handling procedures during storage and assembly.

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

A: No. All three parts operate across the identical 2.5V to 5.5V supply voltage range with equivalent power supply requirements.