SI8460BB-A-IS1 Equivalent & Substitute Parts

Part Overview

The SI8460BB-A-IS1 is a General Purpose Digital Isolator manufactured by Skyworks Solutions Inc., featuring 2500Vrms isolation with 6 channels, 150Mbps data rate, and 25kV/µs common mode transient immunity. The device is packaged in 16-SOIC (0.154", 3.90mm Width) surface mount configuration with a supply voltage range of 2.7V to 5.5V and operating temperature range of -40°C to 125°C.

The SI8460BB-A-IS1 carries a product status of "Not For New Designs," indicating it is obsolete or being phased out. Identifying equivalent and substitute parts is necessary to ensure design continuity, maintain supply chain flexibility, and support ongoing production requirements for existing applications.

Substiute Parts

SI8460BB-A-IS1

Skyworks Solutions Inc.In Stock: 905SI8460BB-A-IS1 Datasheet

Current PartRFQ

SI8660BB-B-IS1

Skyworks Solutions Inc.In Stock: 2292SI8660BB-B-IS1 Datasheet

SimilarRFQ

SI8445BB-C-IS1

Skyworks Solutions Inc.In Stock: 984SI8445BB-C-IS1 Datasheet

Parametric EquivalentRFQ

SI8460BB-B-IS1

Skyworks Solutions Inc.In Stock: 3260SI8460BB-B-IS1 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SI8460BB-A-IS1 is determined by the following critical parameters:

Primary Substitution Criteria:

• Isolation voltage: 2500Vrms (mandatory match)
• Package type: 16-SOIC (0.154", 3.90mm Width) (mandatory match for PCB compatibility)
• Technology: Capacitive Coupling (mandatory match)
• Channel configuration: 6 channels, unidirectional, 6 inputs on Side 1 / 0 on Side 2 (mandatory match for signal routing)
• Data rate: 150Mbps (mandatory match)
• Supply voltage range: Compatible with 2.7V ~ 5.5V operation
• Operating temperature: -40°C ~ 125°C (mandatory match)

Secondary Substitution Criteria (Performance Enhancement Allowed):

• Common Mode Transient Immunity: 25kV/µs or higher
• Propagation delay: Equal or lower values acceptable
• Pulse width distortion: Equal or lower values acceptable

Substitutes are grouped into two categories:

Direct Equivalent (Same Channel Count): SI8460BB-B-IS1 and SI8660BB-B-IS1 maintain the 6-channel configuration with identical isolation, data rate, and package specifications. SI8660BB-B-IS1 offers improved CMTI performance (35kV/µs vs. 25kV/µs).

Parametric Equivalent (Reduced Channel Count): SI8445BB-C-IS1 provides 4 channels instead of 6, maintaining all other critical parameters. This substitute is applicable only when the application requires 4 or fewer isolated channels.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (6-Channel Requirement):

SI8460BB-B-IS1 is a direct functional equivalent with identical electrical specifications and package configuration. Both SI8460BB-A-IS1 and SI8460BB-B-IS1 carry "Not For New Designs" status, making them suitable only for sustaining production of existing designs.

SI8660BB-B-IS1 is the recommended substitute for new designs requiring 6-channel isolation. It maintains all critical parameters while offering superior common mode transient immunity (35kV/µs vs. 25kV/µs) and carries "Active" product status. The SI8660BB-B-IS1 features RoHS3 compliance and REACH unaffected status, meeting current regulatory requirements. Supply voltage range extends to 2.5V minimum, providing broader operational flexibility.

For Reduced Channel Count (4-Channel Requirement):

SI8445BB-C-IS1 is applicable when the application requires 4 or fewer isolated channels. It maintains identical isolation voltage, data rate, package, and propagation delay specifications. This part carries "Active" product status and is suitable for new designs. Channel reduction may require PCB layout modifications to accommodate the different pinout.

Compliance and Regulatory Considerations:

SI8660BB-B-IS1 and SI8445BB-C-IS1 are both RoHS3 compliant and REACH unaffected, supporting modern supply chain and environmental requirements. Both obsolete variants (SI8460BB-A-IS1 and SI8460BB-B-IS1) should be phased out in favor of active alternatives for long-term design sustainability.

Frequently Asked Questions (FAQ)

Q: Can SI8660BB-B-IS1 be used as a direct replacement for SI8460BB-A-IS1?

A: Yes, SI8660BB-B-IS1 is a direct functional replacement. Both devices feature 6 channels, 2500Vrms isolation, 150Mbps data rate, and identical 16-SOIC packaging. SI8660BB-B-IS1 offers improved common mode transient immunity (35kV/µs vs. 25kV/µs) and carries active product status, making it the preferred choice for new designs.

Q: What is the key difference between SI8460BB-A-IS1 and SI8460BB-B-IS1?

A: Both parts are electrically and mechanically identical with matching specifications for isolation voltage, channel count, data rate, propagation delay, and package type. The primary difference is product status designation; both are marked "Not For New Designs." SI8460BB-B-IS1 offers higher inventory availability (3248 pcs vs. 842 pcs).

Q: Can SI8445BB-C-IS1 replace SI8460BB-A-IS1 in all applications?

A: SI8445BB-C-IS1 is a parametric equivalent suitable only for applications requiring 4 or fewer isolated channels. The reduced channel count (4 vs. 6) requires verification that the application does not depend on all 6 channels. PCB layout modifications may be necessary due to different pinout configuration.

Q: What are the supply voltage compatibility considerations?

A: SI8460BB-A-IS1, SI8460BB-B-IS1, and SI8445BB-C-IS1 operate from 2.7V to 5.5V. SI8660BB-B-IS1 extends the minimum supply voltage to 2.5V, providing compatibility with lower voltage systems. All substitutes are compatible with standard 3.3V and 5V supply rails.

Q: Are all substitute parts available in the same packaging?

A: Yes, all substitute parts (SI8460BB-B-IS1, SI8660BB-B-IS1, and SI8445BB-C-IS1) are packaged in 16-SOIC (0.154", 3.90mm Width) surface mount configuration, ensuring PCB footprint compatibility without layout redesign.

Q: Which substitute is recommended for new design implementations?

A: SI8660BB-B-IS1 is the recommended choice for new designs requiring 6-channel isolation. It carries active product status, offers superior performance specifications, and meets current RoHS3 and REACH compliance requirements. For 4-channel applications, SI8445BB-C-IS1 is the active alternative.