AP7315-31FS4-7B Equivalent & Substitute Parts

Part Overview

The AP7315-31FS4-7B is a linear voltage regulator IC manufactured by Diodes Incorporated, designed for positive fixed output regulation at 3.1V with 150mA output current capability. This device operates as a single-output regulator in a 4-XDFN surface mount package with exposed pad. The part is currently in active production status with 843 units in stock. Substitute parts are identified when electrical specifications, mechanical packaging, and compliance certifications remain identical across the product line, enabling direct replacement in existing designs without circuit modification.

Substiute Parts

AP7315-31FS4-7B

Diodes IncorporatedIn Stock: 870AP7315-31FS4-7B Datasheet

Current PartRFQ

AP7315D-31FS4-7B

Diodes IncorporatedIn Stock: 894AP7315D-31FS4-7B Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the AP7315-31FS4-7B are identified based on strict electrical and mechanical parameter matching. The substitution criteria include:

Output voltage specification (3.1V fixed), output current rating (150mA), maximum input voltage (5.25V), voltage dropout characteristics (0.29V @ 150mA), quiescent current (60 µA), PSRR performance (75dB at 1kHz), operating temperature range (-40°C to 85°C), package configuration (4-XDFN Exposed Pad with X2-DFN1010-4 supplier designation), surface mount mounting type, over current protection, RoHS3 compliance, and MSL rating (1 - Unlimited).

Parts meeting all these parameters are classified as parametric equivalents and direct substitutes. The AP7315D-31FS4-7B variant differs only in the die revision designation (D suffix) while maintaining identical electrical performance and mechanical compatibility.

Parameter Comparison

Engineering Selection Recommendations

Both the AP7315-31FS4-7B and AP7315D-31FS4-7B are active production parts manufactured by Diodes Incorporated with identical electrical specifications and mechanical packaging. Both parts maintain ROHS3 compliance and REACH unaffected status, meeting current environmental and regulatory requirements. The MSL rating of 1 (Unlimited) indicates no moisture sensitivity restrictions for storage or handling. Selection between these parts may be based on inventory availability, with the primary part offering 843 units and the substitute offering 810 units in current stock. The D-suffix variant represents a die revision that maintains full backward and forward compatibility with the original part number.

Frequently Asked Questions (FAQ)

Q: Can AP7315D-31FS4-7B replace AP7315-31FS4-7B in existing designs?

A: Yes. Both parts are parametric equivalents with identical electrical specifications, output voltage (3.1V), output current (150mA), voltage dropout (0.29V @ 150mA), operating temperature range (-40°C to 85°C), and package configuration (4-XDFN Exposed Pad). The D-suffix indicates a die revision with no functional differences.

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

A: No. Both parts use the identical 4-XDFN Exposed Pad package with X2-DFN1010-4 supplier designation. Pinout, pad layout, and thermal characteristics are identical.

Q: What compliance certifications apply to both parts?

A: Both parts are ROHS3 compliant and REACH unaffected. MSL rating is 1 (Unlimited), indicating no moisture sensitivity restrictions.

Q: Can these parts be used interchangeably on the same PCB assembly?

A: Yes. Identical package type, pinout, and electrical specifications enable direct substitution without PCB layout modifications or circuit design changes.

Q: What is the significance of the D-suffix in AP7315D-31FS4-7B?

A: The D-suffix represents an internal die revision by Diodes Incorporated. This revision maintains full electrical and mechanical compatibility with the original part while potentially incorporating manufacturing process improvements.