AP1115AY50L-13 Equivalent & Substitute Parts

Part Overview

The AP1115AY50L-13 is a linear voltage regulator IC manufactured by Diodes Incorporated, designed to deliver a fixed 5V output at 600mA in a compact SOT-89-3 surface mount package. This device is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing design support and production continuity. The part operates across an input voltage range up to 18V with a maximum dropout voltage of 1.3V at full load current, incorporating over-current and over-temperature protection features.

Substiute Parts

AP1115AY50L-13

Diodes IncorporatedIn Stock: 9028AP1115AY50L-13 Datasheet

Current PartRFQ

MCP1703AT-5002E/MB

Microchip TechnologyIn Stock: 1526MCP1703AT-5002E/MB Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the AP1115AY50L-13 is determined by the following critical parameters:

• Fixed output voltage of 5V
• Surface mount package compatibility (SOT-89-3 / TO-243AA)
• Positive output configuration
• Single regulator topology
• ROHS3 compliance and equivalent certifications

The MCP1703AT-5002E/MB qualifies as a functional substitute based on matching output voltage, package form factor, and regulatory compliance. However, the substitute part operates at a reduced maximum output current of 250mA compared to the original 600mA specification. This reduction in current capacity represents the primary design constraint when evaluating substitution feasibility.

Parameter Comparison

Engineering Selection Recommendations

The MCP1703AT-5002E/MB is an active production alternative suitable for designs where the 250mA output current specification meets application requirements. The substitute part offers superior quiescent current performance (5 µA versus 10 mA), lower dropout voltage characteristics, and extended lower operating temperature range (-40°C versus 0°C minimum). Both devices maintain identical 5V fixed output voltage and SOT-89-3 package compatibility, enabling direct footprint replacement in PCB layouts.

The primary design consideration is output current capacity. Applications requiring the full 600mA output current of the original AP1115AY50L-13 cannot use the MCP1703AT-5002E/MB without circuit redesign. The substitute part's active product status ensures long-term availability and manufacturing support, addressing the obsolescence constraint of the original device.

Frequently Asked Questions (FAQ)

Q: Can the MCP1703AT-5002E/MB directly replace the AP1115AY50L-13 in existing designs?

A: Direct replacement is possible only if the application load current does not exceed 250mA. The substitute part is pin-compatible and uses the same SOT-89-3 package. If the design requires 600mA output current, circuit modification is necessary.

Q: What are the key differences between these two regulators?

A: The primary differences are output current capacity (600mA versus 250mA), quiescent current consumption (10 mA versus 5 µA), and maximum input voltage (18V versus 16V). Both deliver fixed 5V output and share identical package form factors.

Q: Are both parts RoHS compliant?

A: Yes. Both the AP1115AY50L-13 and MCP1703AT-5002E/MB are ROHS3 compliant and REACH unaffected, meeting equivalent regulatory requirements.

Q: Does the MCP1703AT-5002E/MB offer better performance?

A: The substitute part provides lower quiescent current (beneficial for battery-powered applications), lower dropout voltage, and additional short-circuit protection. However, it is limited to 250mA output current, which may not suit all applications.

Q: What is the operating temperature difference?

A: The MCP1703AT-5002E/MB operates from -40°C to 125°C, extending the lower temperature range compared to the AP1115AY50L-13 (0°C to 125°C). This provides greater flexibility for industrial and automotive applications.