AP1117D15L-U Linear Voltage Regulator Equivalent & Substitute Parts

Part Overview

The AP1117D15L-U is a linear voltage regulator IC manufactured by Diodes Incorporated, designed to provide a fixed 1.5V output at 1A current capacity. This positive fixed output regulator operates across an input voltage range up to 18V and includes integrated over-current and over-temperature protection. The device is housed in a TO-252-3 (DPAK) surface mount package.

The AP1117D15L-U is classified as obsolete. Identifying equivalent and substitute parts is necessary to ensure continued availability for new designs, production continuity, and long-term component sourcing strategies.

Substiute Parts

AP1117D15L-U

Diodes IncorporatedIn Stock: 823AP1117D15L-U Datasheet

Current PartRFQ

NCP1117DT15G

onsemiIn Stock: 2223NCP1117DT15G Datasheet

MFR RecommendedRFQ

NCV1117DT15RKG

onsemiIn Stock: 19605NCV1117DT15RKG Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the AP1117D15L-U are identified based on the following critical electrical and mechanical parameters:

Electrical Compatibility Criteria:

• Fixed output voltage of 1.5V
• Output current capability of 1A minimum
• Positive output configuration
• Over-current and over-temperature protection features
• Maximum input voltage of 18V or greater
• Surface mount DPAK (TO-252-3) package compatibility

Identified Substitute Parts:

1. NCP1117DT15G (onsemi) – Manufacturer recommended substitute. Obsolete status. Identical output voltage and current specifications with improved dropout voltage (1.2V @ 800mA) and higher PSRR (72dB @ 120Hz). Maximum input voltage rated to 20V.

2. NCV1117DT15RKG (onsemi) – Manufacturer recommended substitute. Active product status with automotive-grade qualification (AEC-Q100). Identical output voltage and current specifications with improved dropout voltage (1.2V @ 800mA) and higher PSRR (72dB @ 120Hz). Maximum input voltage rated to 20V. Extended operating temperature range (-40°C ~ 125°C).

Both substitutes maintain identical package form factor (DPAK/TO-252-3) and protection feature sets, ensuring direct mechanical and electrical compatibility.

Parameter Comparison

Engineering Selection Recommendations

For Standard Industrial Applications: NCP1117DT15G is a direct functional equivalent to the AP1117D15L-U. Both devices are obsolete, but NCP1117DT15G offers improved electrical performance with lower dropout voltage and higher PSRR. This substitute is suitable for applications where component availability from legacy inventory is acceptable.

For New Designs and Long-Term Production: NCV1117DT15RKG is the recommended selection. This part maintains active product status, ensuring long-term availability and supply chain continuity. The automotive-grade qualification (AEC-Q100) and extended operating temperature range (-40°C ~ 125°C) provide enhanced reliability margins. All three devices are ROHS3 compliant and MSL Level 1, meeting modern environmental and handling requirements.

Package and Thermal Considerations: All three parts use identical TO-252-3 (DPAK) surface mount packaging with identical pin configurations, enabling direct PCB layout compatibility without redesign. Thermal performance is equivalent across all three devices for standard operating conditions.

Frequently Asked Questions (FAQ)

Q: Can NCP1117DT15G or NCV1117DT15RKG be used as direct replacements for AP1117D15L-U?

A: Yes. Both onsemi parts are direct electrical and mechanical substitutes. Identical output voltage (1.5V), output current (1A), package form factor (DPAK/TO-252-3), and protection features ensure compatibility without circuit modification.

Q: What is the difference between NCP1117DT15G and NCV1117DT15RKG?

A: NCP1117DT15G is obsolete, while NCV1117DT15RKG is an active product with automotive-grade qualification (AEC-Q100). NCV1117DT15RKG supports an extended operating temperature range (-40°C to 125°C versus 0°C to 125°C). For new designs, NCV1117DT15RKG is preferred for supply chain continuity.

Q: Are there packaging differences between these parts?

A: All three parts use the TO-252-3 (DPAK) surface mount package with identical pin assignments. NCV1117DT15RKG is available in Tape & Reel (TR) packaging for production volumes, while NCP1117DT15G and AP1117D15L-U are standard packaging formats.

Q: Do these substitutes meet RoHS and environmental compliance requirements?

A: Yes. All three parts are ROHS3 compliant, REACH unaffected, and classified as MSL Level 1 (unlimited moisture sensitivity). They meet current environmental and regulatory standards for electronic component manufacturing and use.

Q: What are the key electrical performance improvements in the substitute parts?

A: Both onsemi substitutes feature improved dropout voltage (1.2V @ 800mA versus 1.4V @ 1A) and higher power supply rejection ratio (PSRR of 72dB @ 120Hz versus 60dB @ 180Hz), resulting in better noise rejection and efficiency in power delivery applications.

Q: Which substitute should be selected for automotive applications?

A: NCV1117DT15RKG is the appropriate choice for automotive applications. This part carries AEC-Q100 automotive qualification and extended temperature range support, meeting automotive industry reliability and environmental stress requirements.