FAD8253MX Equivalent & Substitute Parts

Part Overview

The FAD8253MX is a 1200V 2.5A half-bridge gate driver IC manufactured by onsemi, designed for independent dual-channel IGBT gate driving applications. The device operates across a 4.5V to 18V supply voltage range with non-inverting input configuration and is packaged in a 14-SOIC surface mount package.

The FAD8253MX is classified as an obsolete product. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for systems utilizing this gate driver topology.

Substiute Parts

FAD8253MX

onsemiIn Stock: 3442FAD8253MX Datasheet

Current PartRFQ

FAD8253MX-1

onsemiIn Stock: 874FAD8253MX-1 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the FAD8253MX is determined by strict equivalence across the following critical parameters:

Electrical Compatibility Requirements:

• Half-bridge driven configuration with independent dual-channel topology
• IGBT gate type specification
• Supply voltage range: 4.5V to 18V
• Peak output current capability: 2.5A source, 3.4A sink
• Non-inverting input logic configuration
• Operating temperature range: -40°C to 125°C

Mechanical Compatibility Requirements:

• 14-SOIC surface mount package with 0.154" (3.90mm) width
• Identical pinout and footprint

Compliance Requirements:

• ROHS3 compliance
• Moisture Sensitivity Level 1 (Unlimited)

The FAD8253MX-1 qualifies as a direct substitute based on full alignment with all electrical and mechanical parameters listed above. The primary distinction is packaging format (Tape & Reel versus Cut Tape) and product status (Active versus Obsolete).

Parameter Comparison

Engineering Selection Recommendations

FAD8253MX-1 as Primary Substitute:

The FAD8253MX-1 is the direct equivalent part for the obsolete FAD8253MX. Both devices share identical electrical specifications, gate driver topology, and physical package dimensions. The FAD8253MX-1 maintains active product status with onsemi, ensuring ongoing availability and manufacturing support.

The FAD8253MX-1 includes additional documented features not specified for the main part, including bootstrap circuit functionality, comprehensive fault protection (current limiting, shoot-through protection, short circuit protection, and UVLO), and AEC-Q100 automotive qualification. These features provide enhanced system reliability without introducing incompatibility.

The primary operational difference is packaging format: the FAD8253MX-1 is supplied in Tape & Reel format, whereas the FAD8253MX was available in Cut Tape and Digi-Reel formats. This distinction affects procurement and assembly processes but does not impact electrical or mechanical compatibility.

For new designs or production transitions from the obsolete FAD8253MX, the FAD8253MX-1 is the appropriate selection. Both parts are ROHS3 compliant and carry MSL Level 1 (Unlimited) moisture sensitivity ratings, supporting deployment in standard manufacturing environments.

Frequently Asked Questions (FAQ)

Q: Can the FAD8253MX-1 be used as a direct replacement for the FAD8253MX in existing designs?

A: Yes. The FAD8253MX-1 is electrically and mechanically equivalent to the FAD8253MX. Both devices feature identical supply voltage ranges (4.5V to 18V), peak output current specifications (2.5A source, 3.4A sink), operating temperature ranges (-40°C to 125°C), and 14-SOIC package dimensions. No circuit modifications are required for substitution.

Q: What is the difference between the FAD8253MX and FAD8253MX-1?

A: The primary differences are product status and packaging format. The FAD8253MX is classified as obsolete and was supplied in Cut Tape and Digi-Reel formats. The FAD8253MX-1 is an active product supplied in Tape & Reel format. The FAD8253MX-1 includes documented fault protection features (current limiting, shoot-through protection, short circuit protection, UVLO) and AEC-Q100 automotive qualification. Electrical specifications and package dimensions are identical.

Q: Are there any compatibility concerns with PCB assembly when substituting the FAD8253MX-1 for the FAD8253MX?

A: No compatibility concerns exist. Both parts use the identical 14-SOIC surface mount package with 0.154" (3.90mm) width. PCB footprints, solder pad layouts, and component placement are fully compatible. The only consideration is procurement format: the FAD8253MX-1 is supplied in Tape & Reel packaging, which may require different handling procedures than Cut Tape formats.

Q: What are the key electrical parameters that define substitution eligibility for this gate driver?

A: Substitution eligibility is determined by: half-bridge driven configuration, dual independent channels, IGBT gate type, 4.5V to 18V supply voltage range, 2.5A source and 3.4A sink peak output current, non-inverting input logic, and -40°C to 125°C operating temperature range. All substitute parts must match these specifications exactly.

Q: Is the FAD8253MX-1 suitable for automotive applications?

A: The FAD8253MX-1 carries AEC-Q100 automotive qualification, making it suitable for automotive applications. The original FAD8253MX does not specify automotive qualification in the provided data. If automotive qualification is a design requirement, the FAD8253MX-1 is the appropriate selection.

Q: What is the moisture sensitivity level for both parts?

A: Both the FAD8253MX and FAD8253MX-1 carry Moisture Sensitivity Level (MSL) 1 (Unlimited), indicating no moisture sensitivity restrictions. These parts do not require special moisture control during storage, handling, or assembly.