AP7315-18FS4-7B Equivalent & Substitute Parts

Part Overview

The AP7315-18FS4-7B is a linear voltage regulator IC manufactured by Diodes Incorporated, designed for positive fixed output applications. This device delivers 1.8V at 150mA output current with a maximum dropout voltage of 0.44V, making it suitable for low-power supply applications requiring stable voltage regulation. The part is currently in active production status with 693 units available in new original inventory. Substitute parts are identified when electrical and mechanical parameters remain within the specified tolerances for this product category.

Substiute Parts

AP7315-18FS4-7B

Diodes IncorporatedIn Stock: 719AP7315-18FS4-7B Datasheet

Current PartRFQ

AP7315D-18FS4-7B

Diodes IncorporatedIn Stock: 5345AP7315D-18FS4-7B Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the AP7315-18FS4-7B is determined by strict equivalence across the following critical parameters:

• Output voltage specification: 1.8V fixed
• Output current capability: 150mA
• Maximum input voltage: 5.25V
• Dropout voltage performance: 0.44V @ 150mA
• Package configuration: 4-XDFN Exposed Pad (X2-DFN1010-4)
• Operating temperature range: -40°C to 85°C
• Protection mechanism: Over Current protection
• Compliance certifications: ROHS3, REACH Unaffected

The AP7315D-18FS4-7B meets all specified parameters identically to the main part number, establishing it as a parametric equivalent within the AP7315 base product family.

Parameter Comparison

Engineering Selection Recommendations

Both the AP7315-18FS4-7B and AP7315D-18FS4-7B are active production parts from Diodes Incorporated with full ROHS3 compliance and REACH unaffected status. Selection between these parts is based on inventory availability and supply chain considerations rather than electrical or mechanical differentiation. The AP7315D-18FS4-7B currently maintains higher inventory levels (5311 units) compared to the primary part number (693 units), making it suitable for high-volume procurement scenarios. Both parts satisfy identical regulatory and compliance requirements for deployment in equivalent applications.

Frequently Asked Questions (FAQ)

Q: Can AP7315D-18FS4-7B be used as a direct replacement for AP7315-18FS4-7B?

A: Yes. Both parts are parametric equivalents with identical electrical specifications, output voltage, current ratings, dropout voltage, operating temperature range, and package configuration. No circuit modifications are required for substitution.

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

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

Q: What is the significance of the "D" designation in AP7315D-18FS4-7B?

A: The "D" designation indicates a variant within the AP7315 base product family. This designation does not affect electrical performance or compatibility; it represents a manufacturing or distribution variant from Diodes Incorporated.

Q: Are both parts RoHS compliant?

A: Yes. Both AP7315-18FS4-7B and AP7315D-18FS4-7B are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory standards.

Q: What protection features are included in these regulators?

A: Both parts include over current protection to safeguard against excessive load conditions.

Q: Can these parts be used in applications requiring extended temperature ranges beyond -40°C to 85°C?

A: No. Both parts are specified for operation within the -40°C to 85°C range. Applications requiring extended temperature operation require alternative part selection.