SI86S622BC-AS Equivalent & Substitute Parts Reference

Part Overview

The Skyworks Solutions Inc. SI86S622BC-AS is a general purpose digital isolator designed for applications requiring robust electrical isolation and high-speed data transfer. Classified as active, it utilizes capacitive coupling technology to provide 3750Vrms isolation with two unidirectional channels. This device is automotive-grade and AEC-Q100 qualified, supporting an operating temperature range of -40°C to 125°C. Its availability in inventory may necessitate consideration of substitute models to maintain uninterrupted production, inventory optimization, or supply flexibility.

Key Parameters

Manufacturer Part Number	Manufacturer	Series	Technology	Type	Isolated Power	Number of Channels	Inputs - Side 1/Side 2	Channel Type	Voltage - Isolation	Common Mode Transient Immunity (Min)	Data Rate	Propagation Delay tpLH / tpHL (Max)	Pulse Width Distortion (Max)	Rise / Fall Time (Typ)	Voltage - Supply	Operating Temperature	Mounting Type	Package / Case	Supplier Device Package	Product Status	Qualification	Moisture Sensitivity Level (MSL)
SI86S622BC-AS	Skyworks Solutions Inc.	Si86S62x	Capacitive Coupling	General Purpose	Yes	2	1/1	Unidirectional	3750Vrms	100kV/µs	150Mbps	13.5ns, 13.5ns	2.5ns	2.5ns, 2.5ns	2.25V ~ 5.5V	-40°C ~ 125°C	Surface Mount	8-SOIC (0.154", 3.90mm Width)	8-SOIC	Active	AEC-Q100	2 (1 Year)

Substitute Part Grouping Explanation

Alternate selections are determined strictly using identical electrical and mechanical parameters essential for direct interchangeability. The following criteria define the allowed substitute group: manufacturer, technology type, channel count, channel directionality, isolation rating, common mode transient immunity, maximum data rate, propagation delay, supply voltage range, temperature rating, mounting style, and package/case size. Automotive qualification and RoHS/Moisture Sensitivity compliance are maintained where specified.

Parameter Comparison

Parameter	SI86S622BC-AS	SI86S621BC-IS
Manufacturer Part Number	SI86S622BC-AS	SI86S621BC-IS
Manufacturer	Skyworks Solutions Inc.	Skyworks Solutions Inc.
Series	Si86S62x	Si86S62x
Technology	Capacitive Coupling	Capacitive Coupling
Type	General Purpose	General Purpose
Isolated Power	Yes	Yes
Number of Channels	2	2
Inputs - Side 1/Side 2	1/1	1/1
Channel Type	Unidirectional	Unidirectional
Voltage - Isolation	3750Vrms	3750Vrms
Common Mode Transient Immunity (Min)	100kV/µs	100kV/µs
Data Rate	150Mbps	150Mbps
Propagation Delay tpLH / tpHL (Max)	13.5ns, 13.5ns	13.5ns, 13.5ns
Pulse Width Distortion (Max)	2.5ns	2.5ns
Rise / Fall Time (Typ)	2.5ns, 2.5ns	2.5ns, 2.5ns
Voltage - Supply	2.25V ~ 5.5V	2.25V ~ 5.5V
Operating Temperature	-40°C ~ 125°C	-40°C ~ 125°C
Mounting Type	Surface Mount	Surface Mount
Package / Case	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width)
Supplier Device Package	8-SOIC	8-SOIC
Product Status	Active	Active
Moisture Sensitivity Level (MSL)	2 (1 Year)	2 (1 Year)

Engineering Selection Recommendations

The SI86S622BC-AS and SI86S621BC-IS both have active product status and comply with RoHS and AEC-Q100 automotive qualification. Both share identical electrical and mechanical parameters including isolation voltage, channel count, propagation delay, data rate, and packaging form factor. Equivalent Moisture Sensitivity Levels (MSL) and similar mounting type confirm suitability for direct substitution within approved engineering specifications.

Frequently Asked Questions (FAQ)

Q1: What parameters must match for digital isolator substitution?
A1: Substitution requires identical technology type, channel count, channel directionality, isolation voltage, common mode transient immunity, data rate, propagation delay, supply voltage range, temperature rating, mounting style, and package dimensions.

Q2: Are SI86S622BC-AS and SI86S621BC-IS interchangeable in the same PCB footprint?
A2: Both devices utilize the same 8-SOIC (0.154", 3.90mm Width) package and surface mount configuration.

Q3: Is automotive qualification retained when substituting SI86S621BC-IS for SI86S622BC-AS?
A3: The automotive qualification status AEC-Q100 is maintained per the provided parameters.

Q4: Does substituting affect supply chain or compliance?
A4: Both models are RoHS compliant and share Moisture Sensitivity Level (MSL) 2 (1 Year), allowing for equivalent handling and compliance.

Q5: What considerations exist for high-speed signal integrity?
A5: Data rate, propagation delay, and pulse width distortion are identical; no parameter deviation occurs regarding high-speed signal applications within the scope of substitution.

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