SI8462AB-A-IS1 Equivalent & Substitute Parts

Part Overview

The SI8462AB-A-IS1 is a General Purpose Digital Isolator manufactured by Skyworks Solutions Inc., featuring 2500Vrms isolation across 6 channels with 1Mbps data rate and 25kV/µs common mode transient immunity. The device is packaged in 16-SOIC (0.154", 3.90mm Width) and operates across -40°C to 125°C temperature range with supply voltage from 2.7V to 5.5V.

The SI8462AB-A-IS1 carries a "Not For New Designs" product status. Identifying equivalent and substitute parts is necessary to support ongoing production requirements, legacy system maintenance, and to evaluate active alternatives that may offer improved performance characteristics or better long-term availability.

Substiute Parts

SI8462AB-A-IS1

Skyworks Solutions Inc.In Stock: 898SI8462AB-A-IS1 Datasheet

Current PartRFQ

SI8662AB-B-IS1

Skyworks Solutions Inc.In Stock: 3136SI8662AB-B-IS1 Datasheet

SimilarRFQ

SI8430AB-D-IS1

Skyworks Solutions Inc.In Stock: 1829SI8430AB-D-IS1 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SI8462AB-A-IS1 is determined by the following critical parameters:

Primary Compatibility Criteria:

• Manufacturer: Skyworks Solutions Inc.
• Technology: Capacitive Coupling
• Type: General Purpose Digital Isolator
• Voltage - Isolation: 2500Vrms
• Package / Case: 16-SOIC (0.154", 3.90mm Width)
• Channel Configuration: 6 channels with 4/2 input distribution
• Data Rate: 1Mbps
• Operating Temperature Range: -40°C ~ 125°C

Substitution Categories:

Direct Substitute (SI8662AB-B-IS1): Maintains identical channel count (6), isolation voltage (2500Vrms), package format (16-SOIC), and data rate (1Mbps). Differs in Common Mode Transient Immunity (35kV/µs vs. 25kV/µs), supply voltage range (2.5V ~ 5.5V vs. 2.7V ~ 5.5V), and product status (Active vs. Not For New Designs).

Parametric Equivalent (SI8430AB-D-IS1): Shares isolation voltage (2500Vrms), package format (16-SOIC), data rate (1Mbps), and operating temperature range. Differs in channel count (3 vs. 6) and input distribution (3/0 vs. 4/2), making it suitable only for applications requiring reduced channel density.

Parameter Comparison

Engineering Selection Recommendations

SI8662AB-B-IS1 Selection Criteria:

The SI8662AB-B-IS1 is the primary substitute for the SI8462AB-A-IS1 when full 6-channel functionality is required. This part maintains identical channel architecture (6 channels, 4/2 input distribution) and package footprint (16-SOIC). The SI8662AB-B-IS1 carries Active product status, providing superior long-term availability and supply chain stability compared to the Not For New Designs status of the SI8462AB-A-IS1.

The SI8662AB-B-IS1 offers enhanced Common Mode Transient Immunity at 35kV/µs versus the SI8462AB-A-IS1 at 25kV/µs, providing improved noise immunity in high-speed switching environments. The supply voltage range extends to 2.5V minimum (versus 2.7V), enabling operation in lower-voltage applications. Rise and fall times are improved to 2.5ns (symmetric) compared to the asymmetric 3.8ns/2.8ns of the SI8462AB-A-IS1.

The SI8662AB-B-IS1 is RoHS3 Compliant and REACH Unaffected, meeting modern environmental and regulatory requirements.

SI8430AB-D-IS1 Selection Criteria:

The SI8430AB-D-IS1 is a parametric equivalent suitable only for applications requiring reduced channel density. This part provides 3 channels with unidirectional configuration (3/0 input distribution) versus the 6-channel (4/2) architecture of the SI8462AB-A-IS1. The SI8430AB-D-IS1 maintains identical isolation voltage (2500Vrms), package format (16-SOIC), data rate (1Mbps), and operating temperature range.

Selection of the SI8430AB-D-IS1 requires circuit redesign to accommodate the reduced channel count and is appropriate only when application requirements do not exceed 3 isolated channels.

Frequently Asked Questions (FAQ)

Q: Can SI8662AB-B-IS1 be used as a direct replacement for SI8462AB-A-IS1 without circuit modification?

A: Yes. The SI8662AB-B-IS1 maintains identical channel count (6), input distribution (4/2), isolation voltage (2500Vrms), package format (16-SOIC), and data rate (1Mbps). Pin-to-pin compatibility is preserved. The enhanced Common Mode Transient Immunity (35kV/µs vs. 25kV/µs) and improved rise/fall times represent performance improvements rather than compatibility issues.

Q: What are the key differences between SI8462AB-A-IS1 and SI8662AB-B-IS1?

A: Primary differences are: (1) Product Status—SI8662AB-B-IS1 is Active while SI8462AB-A-IS1 is Not For New Designs; (2) Common Mode Transient Immunity—35kV/µs versus 25kV/µs; (3) Supply voltage minimum—2.5V versus 2.7V; (4) Rise/Fall Time—2.5ns (symmetric) versus 3.8ns/2.8ns (asymmetric); (5) Compliance—SI8662AB-B-IS1 is RoHS3 Compliant and REACH Unaffected.

Q: Is SI8430AB-D-IS1 compatible with SI8462AB-A-IS1 applications?

A: SI8430AB-D-IS1 is a parametric equivalent only for applications requiring 3 or fewer isolated channels. The reduced channel count (3 vs. 6) and different input distribution (3/0 vs. 4/2) require circuit redesign. This part is not a direct replacement.

Q: Are all three parts available in the same package format?

A: Yes. SI8462AB-A-IS1, SI8662AB-B-IS1, and SI8430AB-D-IS1 are all packaged in 16-SOIC (0.154", 3.90mm Width) with identical Moisture Sensitivity Level (MSL 2, 1 Year) and export classification (ECCN EAR99, HTSUS 8542.39.0001).

Q: What is the impact of the 10kV/µs difference in Common Mode Transient Immunity between SI8462AB-A-IS1 and SI8662AB-B-IS1?

A: The SI8662AB-B-IS1 at 35kV/µs provides superior immunity to high-speed voltage transients on the isolated side. This is beneficial in applications with fast switching power stages, motor drives, or high-voltage switching circuits. The SI8462AB-A-IS1 at 25kV/µs is adequate for lower-speed or less demanding switching environments.

Q: Does the extended supply voltage range of SI8662AB-B-IS1 (2.5V minimum) affect circuit design?

A: The SI8662AB-B-IS1 supports operation down to 2.5V versus 2.7V for SI8462AB-A-IS1. This provides additional design flexibility for low-voltage applications. Existing designs operating at 2.7V or higher are unaffected. No circuit modification is required for designs already using SI8462AB-A-IS1.