SI8630ET-AS Equivalent & Substitute Parts

Part Overview

The SI8630ET-AS is an automotive-grade general purpose digital isolator manufactured by Skyworks Solutions Inc. This device provides 5000Vrms isolation across 3 unidirectional channels with a maximum data rate of 150Mbps and 60kV/µs common mode transient immunity. The part is packaged in a 16-SOIC surface mount configuration and qualifies to AEC-Q100 automotive standards with an operating temperature range of -40°C to 125°C.

The SI8630ET-AS maintains Active product status. Substitute parts are identified when design requirements permit reduced channel count, lower common mode transient immunity specifications, or when inventory availability necessitates alternative sourcing while maintaining core isolation voltage, data rate, and package compatibility.

Substiute Parts

SI8630ET-AS

Skyworks Solutions Inc.In Stock: 730SI8630ET-AS Datasheet

Current PartRFQ

SI8610BD-B-IS

Skyworks Solutions Inc.In Stock: 1335SI8610BD-B-IS Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SI8630ET-AS is permissible when the following conditions are met:

Core Compatibility Requirements (Non-Negotiable):

• Isolation voltage: 5000Vrms minimum
• Data rate: 150Mbps minimum
• Package: 16-SOIC (0.295", 7.50mm Width)
• Supply voltage range: 2.5V ~ 5.5V
• Operating temperature: -40°C ~ 125°C
• Manufacturer: Skyworks Solutions Inc.
• Technology: Capacitive Coupling

Allowable Variation Parameters:

• Number of channels: May be reduced from 3 channels
• Common mode transient immunity: May be reduced from 60kV/µs
• Propagation delay and pulse width distortion: Must remain within specified maximums

The SI8610BD-B-IS qualifies as a parametric equivalent because it maintains all core compatibility requirements while operating with a reduced channel count (1 channel versus 3 channels) and lower common mode transient immunity (35kV/µs versus 60kV/µs). This substitution is valid only for applications requiring single-channel isolation.

Parameter Comparison

Engineering Selection Recommendations

SI8630ET-AS Selection Criteria:

• Applications requiring 3 isolated channels in a single package
• Systems demanding 60kV/µs common mode transient immunity
• Automotive-grade designs with AEC-Q100 qualification requirement
• Current inventory availability: 715 pieces

SI8610BD-B-IS Selection Criteria:

• Single-channel isolation requirements only
• Applications tolerating 35kV/µs common mode transient immunity
• Automotive-grade designs with AEC-Q100 qualification requirement
• Higher inventory availability: 1226 pieces
• Reduced bill of materials complexity when only one isolation channel is needed

Both parts maintain Active product status, identical isolation voltage (5000Vrms), identical data rate (150Mbps), and identical package configuration (16-SOIC). Both comply with AEC-Q100 automotive qualification and operate across the -40°C to 125°C temperature range. Selection between these parts depends solely on channel count requirements and common mode transient immunity specifications for the target application.

Frequently Asked Questions (FAQ)

Q: Can SI8610BD-B-IS replace SI8630ET-AS in all applications?

A: No. The SI8610BD-B-IS provides only 1 isolated channel compared to the SI8630ET-AS 3-channel configuration. Substitution is valid only for applications requiring single-channel isolation. Additionally, the SI8610BD-B-IS specifies 35kV/µs common mode transient immunity versus 60kV/µs for the SI8630ET-AS. Applications sensitive to common mode transient events must verify compatibility with the lower specification.

Q: Are the package dimensions identical?

A: Yes. Both SI8630ET-AS and SI8610BD-B-IS use the 16-SOIC (0.295", 7.50mm Width) package. PCB footprints and mounting procedures are identical.

Q: Do both parts meet automotive qualification standards?

A: Yes. Both parts are automotive-grade and qualify to AEC-Q100 standards. Both operate across -40°C to 125°C and maintain identical moisture sensitivity levels (MSL 2A, 4 Weeks).

Q: What is the data rate specification for both parts?

A: Both SI8630ET-AS and SI8610BD-B-IS support 150Mbps maximum data rate. Propagation delay, pulse width distortion, and rise/fall times are identical across both parts.

Q: Can I use SI8610BD-B-IS if my design requires multiple isolated channels?

A: No. The SI8610BD-B-IS provides only 1 unidirectional channel. If your design requires 3 isolated channels, the SI8630ET-AS is the appropriate selection. Using the SI8610BD-B-IS would require multiple devices and additional PCB area.

Q: What supply voltage range do these parts support?

A: Both SI8630ET-AS and SI8610BD-B-IS operate with supply voltage from 2.5V to 5.5V. This range accommodates both 3.3V and 5V logic systems.

Q: Are there differences in isolation voltage between these parts?

A: No. Both SI8630ET-AS and SI8610BD-B-IS provide 5000Vrms isolation voltage. Isolation voltage is not a differentiating factor between these parts.