AP7343-31FS4-7B Equivalent & Substitute Parts

Part Overview

The AP7343-31FS4-7B is a linear voltage regulator IC from Diodes Incorporated, classified as a Power Management (PMIC) component. This device delivers a fixed 3.1V output at 300mA with integrated enable control and over-current protection. The part is actively produced and maintains full RoHS3 compliance with unlimited moisture sensitivity rating (MSL 1). Substitute parts are identified when equivalent electrical performance and mechanical compatibility are maintained across the allowed parameter range for this product category.

Substiute Parts

AP7343-31FS4-7B

Diodes IncorporatedIn Stock: 714AP7343-31FS4-7B Datasheet

Current PartRFQ

AP7341-31FS4-7

Diodes IncorporatedIn Stock: 63101AP7341-31FS4-7 Datasheet

Parametric EquivalentRFQ

AP7341D-31FS4-7

Diodes IncorporatedIn Stock: 808AP7341D-31FS4-7 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the AP7343-31FS4-7B are qualified based on the following criteria:

• Fixed output voltage of 3.1V
• Output current rating of 300mA
• Maximum input voltage of 5.25V
• 4-XDFN Exposed Pad package with X2-DFN1010-4 supplier device package
• Surface mount configuration
• Operating temperature range of -40°C ~ 85°C
• Enable control and over-current protection features
• Active product status with RoHS3 compliance

The AP7341-31FS4-7 and AP7341D-31FS4-7 meet these core electrical and mechanical requirements. Variations in dropout voltage and quiescent current do not disqualify substitution when the primary functional parameters remain within specification.

Parameter Comparison

Engineering Selection Recommendations

All three parts maintain active product status with full RoHS3 compliance and REACH unaffected designation. The AP7343-31FS4-7B, AP7341-31FS4-7, and AP7341D-31FS4-7 are functionally equivalent for applications requiring a 3.1V, 300mA linear regulator in the X2-DFN1010-4 package.

Selection between these parts depends on specific application requirements regarding dropout voltage performance. The AP7341-31FS4-7 exhibits the lowest dropout voltage at 0.27V (measured at 150mA), while the AP7341D-31FS4-7 shows higher dropout at 0.65V (measured at 300mA). The AP7343-31FS4-7B provides intermediate dropout performance at 0.29V (measured at 300mA).

All parts are suitable for direct substitution in designs where the core electrical specifications and package requirements are met.

Frequently Asked Questions (FAQ)

Q: Can AP7341-31FS4-7 replace AP7343-31FS4-7B in existing designs?

A: Yes. Both parts deliver 3.1V at 300mA with identical package configuration (X2-DFN1010-4), operating temperature range, and protection features. The AP7341-31FS4-7 exhibits lower quiescent current (50 µA vs. 60 µA) and comparable dropout voltage performance.

Q: What is the difference between AP7341-31FS4-7 and AP7341D-31FS4-7?

A: Both are from the AP7341 base product family with identical output voltage, current rating, and package. The primary difference is dropout voltage: AP7341-31FS4-7 measures 0.27V @ 150mA, while AP7341D-31FS4-7 measures 0.65V @ 300mA. Applications sensitive to dropout voltage performance should account for this variation.

Q: Are all three parts available in the same packaging?

A: Yes. All three parts use the 4-XDFN Exposed Pad package with X2-DFN1010-4 supplier device package designation, enabling direct PCB layout compatibility.

Q: Do these parts require different handling or storage procedures?

A: No. All three parts carry MSL 1 (Unlimited) moisture sensitivity rating, indicating no special moisture control requirements during storage or handling.

Q: Are there any compliance or certification differences between these parts?

A: No. All three parts maintain identical RoHS3 compliance, REACH unaffected status, and EAR99 export classification.