AP7315-33SA-7 Equivalent & Substitute Parts

Part Overview

The AP7315-33SA-7 is a linear voltage regulator IC from Diodes Incorporated designed for positive fixed 3.3V output applications. This Surface Mount Device (SMD) in SOT-23-3 package delivers 150mA output current with a maximum dropout voltage of 0.29V at rated load. The part is Active status and widely used in low-power digital circuits, microcontroller power supplies, and portable device applications where space and efficiency are critical constraints.

Substitute parts are identified when design requirements necessitate alternative sourcing due to inventory availability, supply chain considerations, or equivalent performance specifications across the same electrical and mechanical parameters.

Substiute Parts

AP7315-33SA-7

Diodes IncorporatedIn Stock: 6419AP7315-33SA-7 Datasheet

Current PartRFQ

AP7315-33SR-7

Diodes IncorporatedIn Stock: 789AP7315-33SR-7 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

The AP7315-33SR-7 qualifies as a parametric equivalent to the AP7315-33SA-7 based on strict alignment of the following critical electrical and mechanical parameters:

• Output voltage specification: 3.3V fixed
• Output current rating: 150mA
• Maximum input voltage: 5.25V
• Dropout voltage: 0.29V @ 150mA
• Quiescent current: 60 µA
• PSRR performance: 75dB (1kHz)
• Package configuration: SOT-23-3
• Operating temperature range: -40°C to 85°C
• Protection mechanism: Over Current
• Compliance certifications: ROHS3, MSL 1

Both parts share the same base product number (AP7315) and are manufactured by Diodes Incorporated. The substitution is valid for applications requiring identical electrical performance and physical form factor.

Parameter Comparison

Engineering Selection Recommendations

Both AP7315-33SA-7 and AP7315-33SR-7 are Active status products from Diodes Incorporated with full ROHS3 compliance and REACH unaffected status. Selection between these parts should be based on:

• Packaging format: Both use Tape & Reel (TR) configuration suitable for automated assembly
• Inventory availability: AP7315-33SA-7 has 6400 units in stock; AP7315-33SR-7 has 726 units in stock
• Supply chain lead times and procurement requirements
• Compliance documentation requirements for your application

No electrical performance differentiation exists between these parts. PCB layout, thermal management, and circuit design considerations remain identical for either selection.

Frequently Asked Questions (FAQ)

Q: Can AP7315-33SR-7 be used as a direct replacement for AP7315-33SA-7?

A: Yes. Both parts are electrically and mechanically identical across all specified parameters including output voltage, current rating, dropout voltage, package type, and operating temperature range.

Q: Are there any differences in the SOT-23-3 package between these parts?

A: No. Both parts use the identical SOT-23-3 package configuration (also designated TO-236-3 or SC-59). Pin assignments, lead spacing, and thermal characteristics are equivalent.

Q: What is the difference between the part number suffixes SA and SR?

A: The suffix designates the packaging reel format within the Tape & Reel delivery method. Both formats contain identical die and electrical specifications. The difference is administrative and does not affect circuit performance.

Q: Are both parts suitable for -40°C to 85°C temperature range applications?

A: Yes. Both AP7315-33SA-7 and AP7315-33SR-7 are rated for the full -40°C to 85°C operating temperature range.

Q: Do both parts require identical PCB layout and decoupling?

A: Yes. Circuit design, PCB layout, input/output capacitor selection, and thermal management are identical for both parts due to matching electrical specifications.

Q: What is the significance of MSL 1 rating?

A: MSL 1 indicates unlimited shelf life under controlled storage conditions. Both parts have the same moisture sensitivity classification and storage requirements.