SI8273ABD-IM Equivalent & Substitute Parts

Part Overview

The SI8273ABD-IM is a 2-channel digital isolator gate driver manufactured by Skyworks Solutions Inc., featuring RF coupling technology with 2500Vrms isolation. This component is designed for high-speed gate driving applications requiring galvanic isolation in power conversion and motor control circuits. The part is currently classified as Obsolete, making identification of compatible substitutes essential for ongoing production support and design continuity.

Substiute Parts

SI8273ABD-IM

Skyworks Solutions Inc.In Stock: 852SI8273ABD-IM Datasheet

Current PartRFQ

SI8273ABD-IM1

Skyworks Solutions Inc.In Stock: 2160SI8273ABD-IM1 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SI8273ABD-IM is determined by strict equivalence across the following critical parameters:

• Number of Channels: 2 channels (required)
• Voltage - Isolation: 2500Vrms (required)
• Technology: RF Coupling (required)
• Common Mode Transient Immunity: 200kV/µs minimum (required)
• Propagation Delay: 75ns maximum for both tpLH and tpHL (required)
• Pulse Width Distortion: 8ns maximum (required)
• Current - Peak Output: 4A (required)
• Voltage - Output Supply Range: 4.6V ~ 30V (required)
• Operating Temperature Range: -40°C ~ 125°C (required)
• Manufacturer: Skyworks Solutions Inc. (required)
• Series: Si827x (required)

The SI8273ABD-IM1 qualifies as a direct substitute based on identical electrical and functional specifications. The primary difference is packaging format and product lifecycle status.

Parameter Comparison

Engineering Selection Recommendations

The SI8273ABD-IM1 is a direct functional equivalent suitable for replacement in applications currently using the SI8273ABD-IM. All critical electrical parameters, isolation specifications, and performance characteristics are identical.

Selection considerations based on provided data:

• The SI8273ABD-IM1 carries Last Time Buy status, indicating limited future availability. Procurement planning should account for this lifecycle phase.
• Package format differs: SI8273ABD-IM uses 14-VFLGA (LGA), while SI8273ABD-IM1 uses 14-VDFN (QFN). Both are 5x5mm surface mount packages. PCB layout and footprint modifications are required for package transition.
• Moisture Sensitivity Level (MSL) differs: SI8273ABD-IM is MSL 3 (168 hours), SI8273ABD-IM1 is MSL 2 (1 year). The improved MSL rating of SI8273ABD-IM1 provides extended shelf life and reduced moisture-related handling constraints.
• Both parts maintain identical regulatory approvals (CQC, CSA, UR, VDE) and ECCN/HTSUS classifications.

Frequently Asked Questions (FAQ)

Q: Can SI8273ABD-IM1 be used as a direct replacement for SI8273ABD-IM?

A: Yes, SI8273ABD-IM1 is electrically and functionally equivalent. All isolation voltage, propagation delay, output current, and operating specifications are identical. PCB layout modification is required due to package format change from LGA to QFN.

Q: What is the primary difference between these two parts?

A: The main differences are packaging format (14-VFLGA vs. 14-VDFN), product lifecycle status (Obsolete vs. Last Time Buy), and moisture sensitivity level (MSL 3 vs. MSL 2). Electrical performance is identical.

Q: Are there any compatibility concerns with the package change?

A: Both packages are 5x5mm surface mount formats with 14 pins. Footprint geometry differs between LGA and QFN styles. Design verification and PCB layout updates are necessary for package transition.

Q: What does Last Time Buy status mean for SI8273ABD-IM1?

A: Last Time Buy indicates the manufacturer will accept orders for a limited period before discontinuing production. Inventory availability is finite. Long-term production designs should plan accordingly.

Q: Are regulatory certifications maintained across both parts?

A: Yes. Both SI8273ABD-IM and SI8273ABD-IM1 carry identical regulatory approvals: CQC, CSA, UR, and VDE. ECCN and HTSUS classifications are unchanged.

Q: How does the improved MSL rating affect handling?

A: SI8273ABD-IM1 has MSL 2 (1 year shelf life) compared to SI8273ABD-IM MSL 3 (168 hours). The improved rating reduces moisture absorption risk during storage and extends the acceptable time window before reflow soldering.