AP1117E15L-13 Equivalent & Substitute Parts

Part Overview

The AP1117E15L-13 is a linear voltage regulator IC manufactured by Diodes Incorporated, designed to deliver a fixed 1.5V output at 1A maximum current in a surface-mount SOT-223-3 package. This device is classified as obsolete, making equivalent substitute parts necessary for new designs and production continuity. The AP1117E15L-13 provides positive fixed output regulation with integrated over-current and over-temperature protection, suitable for low-voltage power supply applications requiring stable 1.5V rails.

Substiute Parts

AP1117E15L-13

Diodes IncorporatedIn Stock: 4815AP1117E15L-13 Datasheet

Current PartRFQ

NCP1117ST15T3G

onsemiIn Stock: 6210NCP1117ST15T3G Datasheet

MFR RecommendedRFQ

TLV1117-15CDCY

Texas InstrumentsIn Stock: 3476TLV1117-15CDCY Datasheet

MFR RecommendedRFQ

TLV1117-15CDCYR

Texas InstrumentsIn Stock: 6701TLV1117-15CDCYR Datasheet

MFR RecommendedRFQ

TLV1117-15CDCYRG3

Texas InstrumentsIn Stock: 1980TLV1117-15CDCYRG3 Datasheet

MFR RecommendedRFQ

TLV1117-15IDCY

Texas InstrumentsIn Stock: 998TLV1117-15IDCY Datasheet

MFR RecommendedRFQ

TLV1117-15IDCYR

Texas InstrumentsIn Stock: 1801TLV1117-15IDCYR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the AP1117E15L-13 is determined by the following critical parameters:

• Fixed output voltage of 1.5V
• Surface-mount SOT-223 package family (TO-261-4, TO-261AA)
• Output current capability of 1A or greater
• Maximum input voltage of 15V or higher
• Positive fixed output configuration
• Over-current and over-temperature protection
• Operating temperature range of 0°C to 125°C minimum
• RoHS3 compliance

Substitute parts are grouped into two categories based on output current rating:

Category A: 1A Output Current — NCP1117ST15T3G (onsemi) provides direct 1A capability with improved specifications.

Category B: 800mA Output Current — TLV1117-15 series variants (Texas Instruments) deliver 800mA output, suitable for applications where the full 1A is not required. These include TLV1117-15CDCY, TLV1117-15CDCYR, TLV1117-15CDCYRG3, and TLV1117-15IDCYR, differentiated by packaging format and temperature range.

Parameter Comparison

Engineering Selection Recommendations

For direct 1A replacement: NCP1117ST15T3G (onsemi) is the primary substitute. It maintains 1A output current capability, operates within the required temperature range, and holds active product status. The device offers improved dropout voltage performance (1.2V @ 800mA) and higher PSRR (72dB), with maximum input voltage of 20V exceeding the original specification.

For 800mA applications: TLV1117-15IDCYR (Texas Instruments) is recommended for new designs. This part is actively manufactured, supports extended temperature operation (-40°C to 125°C), and provides superior PSRR (75dB). The Tape & Reel packaging format supports high-volume production. Alternative TLV1117-15 variants (CDCY, CDCYR, CDCYRG3) are available in different packaging formats for specific procurement requirements.

Compliance considerations: All substitute parts maintain ROHS3 compliance and REACH unaffected status, matching the original part's regulatory requirements. MSL ratings differ; NCP1117ST15T3G carries MSL-1 (unlimited shelf life), while TLV1117 variants carry MSL-2 (1-year shelf life), requiring appropriate storage protocols.

Frequently Asked Questions (FAQ)

Q: Can TLV1117-15 series parts (800mA) directly replace the AP1117E15L-13 (1A)?

A: TLV1117-15 variants are suitable substitutes only if your application requires 800mA or less. If your circuit draws the full 1A, use NCP1117ST15T3G instead. Both maintain the same 1.5V output voltage and SOT-223 package compatibility.

Q: What is the difference between TLV1117-15CDCY, TLV1117-15CDCYR, and TLV1117-15IDCYR?

A: These parts are electrically identical but differ in packaging and temperature range. CDCY and CDCYR use commercial temperature range (0°C ~ 125°C), while IDCYR uses industrial temperature range (-40°C ~ 125°C). CDCY is supplied in Tube packaging, CDCYR in Cut Tape & Digi-Reel, and IDCYR in Tape & Reel format. Select based on your procurement and temperature requirements.

Q: Are the SOT-223-3 and SOT-223-4 packages pin-compatible?

A: The SOT-223-3 package (AP1117E15L-13) has three pins, while SOT-223-4 packages (TLV1117 series) have four pins. PCB layout modifications are required for substitution. Verify pin assignments in device datasheets before board redesign.

Q: Why does NCP1117ST15T3G have a lower dropout voltage than the original part?

A: Lower dropout voltage (1.2V @ 800mA vs. 1.4V @ 1A) indicates improved internal design efficiency. This provides better performance in low-input-voltage applications and reduces power dissipation as heat.

Q: What is the significance of MSL-1 versus MSL-2 ratings?

A: MSL-1 (NCP1117ST15T3G) allows unlimited shelf life storage. MSL-2 (TLV1117 series) requires reflow within one year of manufacture. For long-term inventory, NCP1117ST15T3G is preferred. For high-volume production with rapid turnover, MSL-2 parts present no practical constraint.

Q: Is the AP1117E15L-13 still available for purchase?

A: The AP1117E15L-13 is classified as obsolete. Existing inventory may be available through authorized distributors, but new production is not recommended. Use active substitute parts for new designs and production continuity.