AO4454L Equivalent & Substitute Parts

Part Overview

The AO4454L is an N-Channel MOSFET manufactured by Alpha & Omega Semiconductor Inc., rated for 100V drain-to-source voltage in an 8-SOIC surface mount package. This device is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing design support and procurement continuity. The obsolete status requires engineers to transition designs to active, in-production alternatives that maintain electrical and mechanical compatibility.

Substiute Parts

AO4454L

Alpha & Omega Semiconductor Inc.In Stock: 10840AO4454L Datasheet

Current PartRFQ

FDS3672

onsemiIn Stock: 108213FDS3672 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the AO4454L is based on the following critical parameters that must align between the main part and substitute:

Electrical Compatibility Criteria:

• Drain-to-Source Voltage (Vdss): 100V minimum rating required
• FET Type: N-Channel configuration
• Technology: MOSFET (Metal Oxide Semiconductor)

Mechanical Compatibility Criteria:

• Package: 8-SOIC surface mount form factor
• Mounting Type: Surface Mount

Compliance & Environmental Criteria:

• Moisture Sensitivity Level: MSL 1 (Unlimited) or equivalent
• REACH Status: REACH Unaffected or compliant

The FDS3672 from onsemi satisfies all substitution criteria, providing an active-status alternative with matching voltage rating, FET type, technology, and package configuration.

Parameter Comparison

Engineering Selection Recommendations

The FDS3672 is the designated substitute for the AO4454L based on the following engineering criteria:

Electrical Equivalence: Both devices are N-Channel MOSFETs with 100V Vdss rating, satisfying the primary electrical requirement for direct substitution in 100V applications.

Package Compatibility: Both components utilize the 8-SOIC surface mount package with identical pinout configuration, enabling direct PCB layout compatibility without redesign.

Compliance Status: The FDS3672 maintains REACH Unaffected status and MSL 1 (Unlimited) classification, matching the environmental and moisture sensitivity profile of the AO4454L. The FDS3672 additionally carries RoHS3 compliance certification.

Product Lifecycle: The transition from the obsolete AO4454L to the active FDS3672 ensures long-term supply chain continuity and access to current manufacturing processes and quality assurance protocols.

Availability: The FDS3672 maintains substantial inventory levels (108,190 pcs), providing reliable procurement for production and design transitions.

Frequently Asked Questions (FAQ)

Q: Can the FDS3672 be used as a direct replacement for the AO4454L in existing designs?

A: Yes. The FDS3672 is electrically and mechanically compatible with the AO4454L. Both devices share identical 100V Vdss rating, N-Channel MOSFET configuration, and 8-SOIC package geometry. No PCB layout modifications are required for substitution.

Q: What are the key differences between the AO4454L and FDS3672?

A: The primary differences are manufacturer (Alpha & Omega Semiconductor vs. onsemi), product status (obsolete vs. active), and specified continuous drain current (AO4454L not specified vs. FDS3672 rated at 7.5A). The FDS3672 includes additional performance specifications including Rds On, gate charge, and input capacitance values.

Q: Are there any package or pinout differences between these devices?

A: No. Both devices are housed in the 8-SOIC package with identical pinout configuration and mechanical dimensions (0.154" width, 3.90mm). Direct PCB substitution is possible without layout changes.

Q: Does the FDS3672 meet the same environmental and compliance requirements as the AO4454L?

A: Yes. The FDS3672 maintains MSL 1 (Unlimited) moisture sensitivity classification and REACH Unaffected status, matching the AO4454L profile. The FDS3672 additionally carries RoHS3 compliance certification.

Q: Why is the AO4454L classified as obsolete?

A: The AO4454L has been discontinued by Alpha & Omega Semiconductor Inc. and is no longer in active production. The FDS3672 serves as the recommended active alternative for new designs and production transitions.

Q: Is the FDS3672 available in the same packaging options as the AO4454L?

A: The FDS3672 is available in Cut Tape (CT) and Digi-Reel® packaging formats for surface mount assembly. Both formats support standard manufacturing processes compatible with AO4454L assembly methods.