AP1117D50G-13 Equivalent & Substitute Parts

Part Overview

The AP1117D50G-13 is a linear voltage regulator IC manufactured by Diodes Incorporated, designed to deliver a fixed 5V output at 1A maximum current in a TO-252-3 (DPAK) surface mount package. This part is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production requirements. The AP1117D50G-13 serves as a positive fixed output regulator suitable for power management applications requiring stable 5V regulation from input sources up to 18V.

Substiute Parts

AP1117D50G-13

Diodes IncorporatedIn Stock: 3991AP1117D50G-13 Datasheet

Current PartRFQ

AZ1117CD-5.0TRG1

Diodes IncorporatedIn Stock: 23942AZ1117CD-5.0TRG1 Datasheet

MFR RecommendedRFQ

LD1117DT50CTR

STMicroelectronicsIn Stock: 8913LD1117DT50CTR Datasheet

MFR RecommendedRFQ

LD1117DT50TR

STMicroelectronicsIn Stock: 44554LD1117DT50TR Datasheet

MFR RecommendedRFQ

LM1117DT-5.0/NOPB

Texas InstrumentsIn Stock: 1498LM1117DT-5.0/NOPB Datasheet

MFR RecommendedRFQ

LM1117DTX-5.0/NOPB

National SemiconductorIn Stock: 30343LM1117DTX-5.0/NOPB Datasheet

MFR RecommendedRFQ

LM1117IDT-5.0/NOPB

Texas InstrumentsIn Stock: 2025LM1117IDT-5.0/NOPB Datasheet

MFR RecommendedRFQ

LM1117IDTX-5.0/NOPB

Texas InstrumentsIn Stock: 19855LM1117IDTX-5.0/NOPB Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the AP1117D50G-13 are selected based on the following critical parameters that determine functional compatibility:

Primary Substitution Criteria:

• Fixed 5V output voltage
• TO-252-3 (DPAK) package configuration
• Surface mount mounting type
• Positive output configuration
• Over current and over temperature protection features
• ROHS3 compliance

Secondary Compatibility Factors:

• Output current capability (minimum 800mA acceptable for most applications; 1A preferred for full compatibility)
• Maximum input voltage (15V or higher acceptable; original 18V maximum)
• Voltage dropout characteristics at rated current
• Quiescent current specifications
• Operating temperature range coverage

The substitute parts listed maintain electrical and mechanical compatibility with the AP1117D50G-13 while offering active product status and improved availability. All substitutes share the same package footprint and pinout configuration, enabling direct board-level replacement.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute (Manufacturer Recommended): AZ1117CD-5.0TRG1 from Diodes Incorporated maintains the same manufacturer lineage as the original AP1117D50G-13. This part offers active product status, improved quiescent current performance (6 mA vs. 10 mA), and enhanced PSRR characteristics (70dB vs. 60dB). The AZ1117C series represents the direct evolution of the AP1117 platform with full ROHS3 compliance and unlimited moisture sensitivity rating.

Secondary Substitutes (STMicroelectronics LD1117 Series): LD1117DT50CTR and LD1117DT50TR both deliver active product status with superior PSRR performance (75dB) and reduced voltage dropout (1.2-1.3V @ 800mA). The LD1117DT50TR variant offers the highest inventory availability (44,500 pcs) and extended operating temperature range (-40°C to 125°C). These parts are suitable for applications where output current requirements do not exceed 800mA.

Alternative Substitutes (Texas Instruments LM1117 Series): LM1117DT-5.0/NOPB, LM1117IDT-5.0/NOPB, and LM1117IDTX-5.0/NOPB provide active product status with optimized quiescent current (5 mA) and PSRR performance (75dB). The IDTX variant offers the largest inventory (19,818 pcs) and extended temperature range (-40°C to 125°C). These parts are established industry standards with proven reliability across multiple applications.

National Semiconductor Option: LM1117DTX-5.0/NOPB offers equivalent electrical performance to the Texas Instruments variants with 30,300 pcs inventory availability. This part maintains full compatibility with the TO-252-3 package footprint and pinout.

All listed substitutes maintain ROHS3 compliance and REACH unaffected status, meeting current regulatory requirements for electronic component procurement.

Frequently Asked Questions (FAQ)

Q: Can the AP1117D50G-13 be directly replaced with any of the listed substitutes? A: Yes, all listed substitutes share the identical TO-252-3 (DPAK) package footprint and pinout configuration, enabling direct board-level replacement without PCB modifications. However, applications requiring the full 1A output current should prioritize the AZ1117CD-5.0TRG1, as other substitutes are rated for 800mA maximum output current.

Q: What is the primary difference between the AZ1117CD-5.0TRG1 and the LD1117/LM1117 series? A: The AZ1117CD-5.0TRG1 maintains 1A output current capability matching the original AP1117D50G-13, while LD1117 and LM1117 variants are rated for 800mA maximum output current. For applications operating near the 1A limit, the AZ1117CD-5.0TRG1 is the preferred substitute. For applications requiring 800mA or less, all substitutes are functionally equivalent.

Q: Are there temperature range considerations when selecting a substitute? A: The original AP1117D50G-13 operates from 0°C to 125°C. The AZ1117CD-5.0TRG1 extends the lower limit to -20°C, while LD1117DT50CTR, LM1117IDT-5.0/NOPB, and LM1117IDTX-5.0/NOPB extend to -40°C. For applications requiring operation below 0°C, select substitutes with extended temperature ranges.

Q: What is the significance of the voltage dropout specification? A: Voltage dropout determines the minimum input voltage required to maintain regulated output. The original part specifies 1.4V dropout at 1A. Most substitutes offer 1.2-1.3V dropout at 800mA, providing improved efficiency in low-input-voltage applications. For designs with tight input voltage margins, lower dropout specifications are advantageous.

Q: Does the reduced quiescent current in substitute parts affect circuit design? A: Substitute parts with lower quiescent current (5-6 mA vs. 10 mA) reduce standby power consumption and heat generation. This improvement does not require circuit modifications and is beneficial for battery-powered or thermally constrained applications.

Q: Are all substitutes suitable for high-frequency switching applications? A: These are linear regulators, not switching regulators. All substitutes are suitable for linear regulation applications. The PSRR specification (60-75dB) indicates power supply rejection ratio performance for noise filtering. Higher PSRR values in substitute parts provide improved noise rejection without circuit modifications.

Q: What packaging options are available for the substitutes? A: All substitutes are supplied in TO-252-3 (DPAK) surface mount packages. Packaging variants include Cut Tape (CT) & Digi-Reel for high-volume procurement and Tube packaging for lower volumes. The package footprint and pinout remain identical across all options.

Q: Is the AP1117D50G-13 obsolescence a concern for long-term supply? A: Yes, the obsolete status of the AP1117D50G-13 makes it unsuitable for new designs or long-term production. All listed substitutes maintain active product status with established supply chains and manufacturing commitments, ensuring availability for current and future production requirements.