AP131-15WG-7 Equivalent & Substitute Parts

Part Overview

The AP131-15WG-7 is a linear voltage regulator IC from Diodes Incorporated, delivering a fixed 1.5V output at 300mA in an SOT-25 surface mount package. This device functions as a positive fixed output regulator with integrated enable control and protection features including over-current and over-temperature monitoring. The part is currently in Last Time Buy status, making identification of active equivalent and substitute parts essential for design continuity and procurement planning.

Substiute Parts

AP131-15WG-7

Diodes IncorporatedIn Stock: 3361AP131-15WG-7 Datasheet

Current PartRFQ

AP7343-15W5-7

Diodes IncorporatedIn Stock: 3677AP7343-15W5-7 Datasheet

MFR RecommendedRFQ

AP7331-15WG-7

Diodes IncorporatedIn Stock: 17478AP7331-15WG-7 Datasheet

MFR RecommendedRFQ

AP131-15WL-7

Diodes IncorporatedIn Stock: 4264AP131-15WL-7 Datasheet

Parametric EquivalentRFQ

MAX8887EZK15+T

Analog Devices Inc./Maxim IntegratedIn Stock: 2134MAX8887EZK15+T Datasheet

MFR RecommendedRFQ

TPS73215MDBVREP

Texas InstrumentsIn Stock: 2506TPS73215MDBVREP Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the AP131-15WG-7 is determined by the following critical parameters:

• Fixed output voltage of 1.5V
• Output current capability of 300mA or greater
• Maximum input voltage of 5.5V or higher
• Surface mount package compatibility (SOT-25 or equivalent pinout)
• Operating temperature range of -40°C to 85°C or wider
• Enable control feature
• Over-current and over-temperature protection

Substitute parts are grouped into two categories:

MFR Recommended Substitutes: Parts from the same or equivalent manufacturer lineups with active product status, offering improved or equivalent electrical performance.

Parametric Equivalents: Parts with identical or superior electrical specifications but potentially different packaging formats or manufacturers, suitable for direct functional replacement.

Parameter Comparison

Engineering Selection Recommendations

AP7343-15W5-7 (MFR Recommended): Active product status with improved dropout voltage (0.44V vs 0.5V) and lower quiescent current (60 µA vs 100 µA). Identical output specifications and SOT-25 packaging. Suitable for direct replacement in new designs and production transitions.

AP7331-15WG-7 (MFR Recommended): Active product status with higher maximum input voltage (6V vs 5.5V) and lower quiescent current (75 µA). Identical output specifications and SOT-25 packaging. Provides extended input voltage margin for applications with variable supply rails.

AP131-15WL-7 (Parametric Equivalent): Identical electrical specifications to the main part with active product status. Differs only in packaging format (Cut Tape & Digi-Reel vs Tape & Reel). Suitable for applications where packaging format does not impose constraints.

MAX8887EZK15+T (MFR Recommended): Active product status from Analog Devices/Maxim Integrated. Identical output specifications and quiescent current. Package differs (TSOT-23-5 vs SOT-25), requiring PCB layout modification. Includes short-circuit protection in addition to over-current and over-temperature features.

TPS73215MDBVREP (Parametric Equivalent): Active product status from Texas Instruments. Output current reduced to 250mA with significantly lower dropout voltage (0.15V @ 250mA). Extended operating temperature range (-55°C to 125°C). Higher quiescent current (550 µA). Package differs (SOT-23-5 vs SOT-25), requiring PCB layout modification. Suitable for applications requiring lower dropout voltage and extended temperature operation with current requirements not exceeding 250mA.

Frequently Asked Questions (FAQ)

Q: Can AP7343-15W5-7 be used as a direct replacement for AP131-15WG-7?

A: Yes. Both parts deliver 1.5V at 300mA in identical SOT-25 packaging. AP7343-15W5-7 offers improved performance with lower dropout voltage and quiescent current, with no functional limitations for direct substitution.

Q: What is the primary difference between AP131-15WL-7 and AP131-15WG-7?

A: Both parts are electrically identical with matching output voltage, current, and protection features. The difference is packaging format: AP131-15WL-7 is supplied in Cut Tape & Digi-Reel format, while AP131-15WG-7 is supplied in Tape & Reel format. Electrical performance is identical.

Q: Can MAX8887EZK15+T replace AP131-15WG-7 without PCB modification?

A: No. MAX8887EZK15+T uses TSOT-23-5 packaging while AP131-15WG-7 uses SOT-25 packaging. Pin configurations differ, requiring PCB layout redesign. Electrical specifications are compatible for functional replacement.

Q: Is TPS73215MDBVREP suitable for all applications using AP131-15WG-7?

A: TPS73215MDBVREP is suitable only for applications where output current does not exceed 250mA. The main part supports 300mA. Additionally, TPS73215MDBVREP uses SOT-23-5 packaging, requiring PCB modification. Verify current requirements before substitution.

Q: Which substitute offers the best performance improvement over AP131-15WG-7?

A: AP7343-15W5-7 provides the most direct performance improvement with lower dropout voltage (0.44V vs 0.5V) and reduced quiescent current (60 µA vs 100 µA), while maintaining identical packaging and output specifications.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts are ROHS3 compliant, matching the compliance status of AP131-15WG-7.

Q: What is the impact of higher quiescent current in TPS73215MDBVREP?

A: TPS73215MDBVREP has quiescent current of 550 µA compared to 100 µA in AP131-15WG-7. This results in higher standby power consumption. For battery-powered or low-power applications, this may be a limiting factor despite superior dropout voltage performance.