SI8261ACC-C-ISR Equivalent & Substitute Parts

Part Overview

The SI8261ACC-C-ISR is a digital isolator gate driver manufactured by Skyworks Solutions Inc., designed for high-voltage isolation applications requiring capacitive coupling technology. This 1-channel device provides 3750Vrms isolation with 600mA peak output current, operating across automotive-grade temperature ranges (-40°C to 125°C). The part is currently in active production status with 9734 units in stock. Substitute parts are identified when equivalent functional performance can be achieved within the specified electrical and mechanical constraints of the application.

Substiute Parts

SI8261ACC-C-ISR

Skyworks Solutions Inc.In Stock: 9752SI8261ACC-C-ISR Datasheet

Current PartRFQ

IL 610A-3E

NVE Corp/Isolation ProductsIn Stock: 1417IL 610A-3E Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

The IL 610A-3E from NVE Corp/Isolation Products is identified as a substitute part based on the following criteria:

Matching Parameters:

• Package / Case: 8-SOIC (0.154", 3.90mm Width) — identical physical footprint enabling direct PCB compatibility
• Number of Channels: 1 — single-channel configuration matches application requirements
• Mounting Type: Surface Mount — compatible assembly process

Functional Differences: The IL 610A-3E operates with GMR (Giant Magnetoresistive) isolation technology rather than capacitive coupling. This substitution is valid only when the application does not require the specific performance characteristics of capacitive coupling technology. The substitute part provides 2500Vrms isolation, which is lower than the main part's 3750Vrms rating. The Common Mode Transient Immunity (CMTI) of 15kV/µs is significantly lower than the main part's 35kV/µs specification.

Substitution is restricted to applications where these parameter reductions are acceptable and do not compromise system performance or safety margins.

Parameter Comparison

Engineering Selection Recommendations

SI8261ACC-C-ISR Selection Criteria:

• Applications requiring 3750Vrms isolation voltage
• Systems demanding 35kV/µs Common Mode Transient Immunity
• Automotive-grade designs with AEC-Q100 qualification requirement
• Operating environments up to 125°C
• Gate driver applications requiring 600mA peak output current
• Supply voltage range 14.6V to 30V

IL 610A-3E Selection Criteria:

• Applications where 2500Vrms isolation is sufficient
• Systems tolerating 15kV/µs CMTI performance
• General-purpose digital isolation without automotive qualification requirement
• Operating environments limited to 85°C maximum
• Low-voltage supply systems (3V to 5.5V)
• Applications where GMR isolation technology is acceptable

Both parts maintain active production status and are available in identical 8-SOIC packaging. Selection between these parts must be based on the specific isolation voltage, CMTI, temperature, and supply voltage requirements of the target application.

Frequently Asked Questions (FAQ)

Q: Can IL 610A-3E directly replace SI8261ACC-C-ISR in an existing design?

A: Direct replacement is not recommended without design review. While both parts share the same 8-SOIC package, the IL 610A-3E has lower isolation voltage (2500Vrms vs. 3750Vrms), lower CMTI (15kV/µs vs. 35kV/µs), different supply voltage requirements (3V-5.5V vs. 14.6V-30V), and lower maximum operating temperature (85°C vs. 125°C). Substitution is valid only when the application requirements fall within the IL 610A-3E specifications.

Q: What are the key differences in isolation technology?

A: SI8261ACC-C-ISR uses capacitive coupling isolation, while IL 610A-3E uses GMR (Giant Magnetoresistive) technology. These represent fundamentally different isolation mechanisms. Capacitive coupling provides the specified performance characteristics of the main part. GMR technology in the substitute part operates under different physical principles and delivers different electrical performance.

Q: Are both parts automotive-qualified?

A: SI8261ACC-C-ISR carries AEC-Q100 automotive qualification. IL 610A-3E does not list automotive qualification and is classified as general-purpose. Automotive applications must use SI8261ACC-C-ISR or verify that IL 610A-3E meets specific automotive requirements for the target application.

Q: What is the impact of different supply voltage ranges?

A: SI8261ACC-C-ISR requires 14.6V to 30V supply voltage, while IL 610A-3E operates on 3V to 5.5V. These are incompatible supply requirements. The substitute part cannot be used in systems designed for the main part's higher voltage supply without additional power conversion circuitry.

Q: How do propagation delays compare?

A: SI8261ACC-C-ISR specifies 60ns (tpLH) and 50ns (tpHL) maximum delays. IL 610A-3E specifies 75ns (tpLH) and 25ns (tpHL) maximum delays. The substitute part exhibits asymmetric propagation delay with faster falling edge but slower rising edge. Applications sensitive to timing symmetry or absolute delay values must verify compatibility.

Q: Can IL 610A-3E be used in high-temperature automotive applications?

A: No. IL 610A-3E maximum operating temperature is 85°C, while SI8261ACC-C-ISR operates to 125°C. Automotive applications requiring extended temperature operation must use SI8261ACC-C-ISR.