AP1115BY50L-13 Equivalent & Substitute Parts

Part Overview

The AP1115BY50L-13 is a linear voltage regulator IC manufactured by Diodes Incorporated, designed to deliver a fixed 5V output at 600mA in a surface-mount SOT-89-3 package. This part is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing design support and production continuity. The regulator features integrated over-current and over-temperature protection, with a maximum input voltage of 18V and a dropout voltage of 1.3V at full load current.

Substiute Parts

AP1115BY50L-13

Diodes IncorporatedIn Stock: 1792AP1115BY50L-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 AP1115BY50L-13 is determined by the following critical parameters:

• Fixed output voltage of 5V
• Surface-mount SOT-89-3 package (TO-243AA case)
• Positive output configuration
• Over-current and over-temperature protection
• ROHS3 compliance and REACH unaffected status
• Operating temperature range compatibility

The MCP1703AT-5002E/MB qualifies as a substitute based on matching output voltage, package type, protection features, and regulatory compliance. However, the output current rating differs: the substitute provides 250mA versus the original 600mA specification. This substitution is valid only for applications where the required output current does not exceed 250mA.

Parameter Comparison

Engineering Selection Recommendations

The MCP1703AT-5002E/MB is an active product from Microchip Technology and represents the primary substitute for the obsolete AP1115BY50L-13. Both parts maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment for new designs and production continuity.

Selection of the MCP1703AT-5002E/MB requires verification that the application's maximum output current requirement does not exceed 250mA. The substitute offers superior quiescent current performance (5 µA versus 10 mA) and lower dropout voltage (0.65V versus 1.3V), which may provide advantages in low-power or low-headroom applications. The extended operating temperature range (-40°C to 125°C) of the substitute accommodates broader environmental specifications.

The maximum input voltage of the substitute (16V) is 2V lower than the original part (18V). Applications requiring input voltages between 16V and 18V must be evaluated against the substitute's specification.

Frequently Asked Questions (FAQ)

Q: Can the MCP1703AT-5002E/MB directly replace the AP1115BY50L-13 in all applications?

A: Direct replacement is valid only for applications where the required output current does not exceed 250mA. The substitute has a lower current rating (250mA versus 600mA). If your application requires more than 250mA at 5V output, the MCP1703AT-5002E/MB is not suitable.

Q: Are the packages physically identical?

A: Both parts use the TO-243AA case in SOT-89-3 configuration. Pin-to-pin compatibility is maintained, allowing for direct PCB footprint compatibility.

Q: What are the key performance differences?

A: The MCP1703AT-5002E/MB features significantly lower quiescent current (5 µA versus 10 mA), lower dropout voltage (0.65V versus 1.3V at rated current), and an extended operating temperature range (-40°C to 125°C versus 0°C to 125°C). The original part has higher PSRR (60dB at 120Hz versus 35dB at 100Hz).

Q: Are both parts RoHS compliant?

A: Yes, both the AP1115BY50L-13 and MCP1703AT-5002E/MB are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements.

Q: What is the maximum input voltage difference, and does it matter?

A: The MCP1703AT-5002E/MB has a maximum input voltage of 16V compared to 18V for the AP1115BY50L-13. If your circuit operates with input voltages between 16V and 18V, the substitute cannot be used.

Q: Does the substitute offer additional protection features?

A: Yes, the MCP1703AT-5002E/MB includes short-circuit protection in addition to over-current and over-temperature protection, providing enhanced fault tolerance compared to the original part.