AP7315D-31FS4-7B Equivalent & Substitute Parts

Part Overview

The AP7315D-31FS4-7B is a linear voltage regulator IC from Diodes Incorporated designed for positive fixed output applications. This device delivers 150mA output current with a fixed 3.1V output and operates across an input voltage range up to 5.25V. The part is currently in active production status with 810 units available in new original inventory. Alternative equivalent parts may be required due to supply constraints, regional availability, or procurement lead time considerations.

Substiute Parts

AP7315D-31FS4-7B

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

Current PartRFQ

AP7315-31FS4-7B

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

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the AP7315D-31FS4-7B is determined by strict equivalence across the following critical parameters:

• Fixed output voltage of 3.1V
• Output current capability of 150mA
• Maximum input voltage of 5.25V
• Voltage dropout specification of 0.29V @ 150mA
• Quiescent current of 60 µA
• PSRR of 75dB (1kHz)
• 4-XDFN Exposed Pad package (X2-DFN1010-4)
• Operating temperature range of -40°C ~ 85°C
• Over Current protection feature
• ROHS3 compliance and MSL 1 rating

Parts meeting all these parameters are classified as parametric equivalents and direct substitutes.

Parameter Comparison

Engineering Selection Recommendations

Both the AP7315D-31FS4-7B and AP7315-31FS4-7B are active production parts from Diodes Incorporated with identical electrical and mechanical specifications. Selection between these parts should be based on inventory availability and procurement lead times. Both parts carry ROHS3 compliance and REACH Unaffected status, meeting current environmental and regulatory requirements. The MSL 1 rating indicates unlimited shelf life under standard storage conditions. Either part is suitable for direct substitution in applications requiring a 3.1V, 150mA linear regulator with the specified package and performance characteristics.

Frequently Asked Questions (FAQ)

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

A: Yes. Both parts are parametric equivalents with identical electrical specifications, output voltage, current rating, dropout voltage, and package type. No circuit modifications are required.

Q: Are there any differences in the package footprint between these parts?

A: No. Both parts use the identical 4-XDFN Exposed Pad package (X2-DFN1010-4) with the same physical dimensions and pin configuration.

Q: Do both parts meet the same compliance standards?

A: Yes. Both parts are ROHS3 compliant, REACH Unaffected, and carry MSL 1 rating with unlimited moisture sensitivity shelf life.

Q: What is the significance of the voltage dropout specification?

A: The 0.29V dropout at 150mA maximum output current defines the minimum input voltage required to maintain regulated output. Both parts share this specification.

Q: Are there any temperature range differences?

A: No. Both parts operate across the identical -40°C ~ 85°C temperature range.

Q: Which part should be selected based on availability?

A: Selection should be based on current inventory levels and procurement timelines. AP7315-31FS4-7B currently has 843 units in stock compared to 810 units for AP7315D-31FS4-7B.