AP7351D-33FS4-7B Equivalent & Substitute Parts

Part Overview

The AP7351D-33FS4-7B is a linear voltage regulator IC from Diodes Incorporated, classified as a Power Management (PMIC) component. This device delivers a fixed 3.3V output at 150mA with a maximum dropout voltage of 0.35V, designed for surface mount applications in the 4-XDFN Exposed Pad package. The part maintains Active product status and is ROHS3 compliant with unlimited moisture sensitivity rating (MSL 1). Substitute parts are identified when electrical specifications, output configuration, package type, and regulatory compliance remain equivalent across the product line.

Substiute Parts

AP7351D-33FS4-7B

Diodes IncorporatedIn Stock: 1660AP7351D-33FS4-7B Datasheet

Current PartRFQ

AP7354-33FS4-7

Diodes IncorporatedIn Stock: 7005AP7354-33FS4-7 Datasheet

Parametric EquivalentRFQ

AP7354D-33FS4-7

Diodes IncorporatedIn Stock: 13889AP7354D-33FS4-7 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the AP7351D-33FS4-7B are identified based on strict equivalence across the following critical parameters: fixed output voltage (3.3V), output current rating (150mA), maximum input voltage (5.5V), dropout voltage specification (0.35V @ 150mA), package configuration (4-XDFN Exposed Pad), surface mount technology, operating temperature range (-40°C ~ 85°C), and regulatory compliance (ROHS3, REACH Unaffected, EAR99). The substitute parts AP7354-33FS4-7 and AP7354D-33FS4-7 meet all these criteria. Variations in quiescent current (Iq) and PSRR specifications do not disqualify substitution when all primary electrical and mechanical parameters remain constant.

Parameter Comparison

Engineering Selection Recommendations

All three parts—AP7351D-33FS4-7B, AP7354-33FS4-7, and AP7354D-33FS4-7—maintain Active product status and carry identical regulatory compliance certifications (ROHS3, REACH Unaffected, EAR99). The electrical and mechanical specifications are equivalent across all critical parameters required for linear voltage regulation at 3.3V, 150mA output. Selection between these parts may be based on inventory availability and quiescent current performance characteristics, where AP7354-33FS4-7 and AP7354D-33FS4-7 offer reduced Iq at 0.6 µA compared to the AP7351D-33FS4-7B at 1 µA. All parts are suitable for direct substitution in applications requiring fixed 3.3V regulation with the specified package and thermal operating range.

Frequently Asked Questions (FAQ)

Q: Can AP7354-33FS4-7 or AP7354D-33FS4-7 be used as direct replacements for AP7351D-33FS4-7B?

A: Yes. Both substitute parts meet all critical electrical and mechanical specifications: 3.3V fixed output, 150mA current rating, 0.35V maximum dropout voltage, 4-XDFN Exposed Pad package, and -40°C to 85°C operating temperature range. All three parts are Active status with identical regulatory compliance.

Q: What is the difference between AP7354-33FS4-7 and AP7354D-33FS4-7?

A: Both parts are parametrically equivalent with identical electrical specifications and package configuration. The primary distinction is inventory availability, with AP7354D-33FS4-7 showing higher stock levels (13,853 pcs vs. 6,940 pcs).

Q: Does the lower quiescent current in AP7354 variants affect compatibility?

A: No. The reduced quiescent current (0.6 µA vs. 1 µA) in AP7354-33FS4-7 and AP7354D-33FS4-7 represents an improvement in power efficiency and does not impact functional compatibility or circuit operation.

Q: Are all three parts in the same package?

A: Yes. All parts use the 4-XDFN Exposed Pad package with X2-DFN1010-4 supplier device package designation, ensuring identical PCB footprint and mounting requirements.

Q: What regulatory certifications apply to these parts?

A: All three parts are ROHS3 compliant, REACH unaffected, and classified under ECCN EAR99 with HTSUS code 8542.39.0001. MSL rating is 1 (Unlimited) for all parts.