AP1117Y50L-13 Equivalent & Substitute Parts

Part Overview

The AP1117Y50L-13 is a linear voltage regulator IC from Diodes Incorporated designed for positive fixed 5V output at 1A maximum current in a surface mount SOT-89-3 package. This component is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production requirements. The part operates across an input voltage range up to 18V with a maximum dropout voltage of 1.4V at full load current, suitable for general-purpose power management applications requiring regulated 5V output.

Key Parameters

Parameter	Value
Manufacturer Part Number	AP1117Y50L-13
Manufacturer	Diodes Incorporated
Category	Power Management (PMIC)
Package / Case	TO-243AA (SOT-89-3)
Output Voltage (Fixed)	5V
Output Current	1A
Input Voltage (Max)	18V
Dropout Voltage (Max)	1.4V @ 1A
Operating Temperature	0°C ~ 125°C (TJ)
Product Status	Obsolete
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution for the AP1117Y50L-13 is based on the following critical parameters that must remain compatible:

Output Voltage: Fixed 5V output (non-negotiable)
Package Type: SOT-89-3 surface mount (mechanical compatibility)
Output Current Capability: Minimum 1A (functional requirement)
Input Voltage Range: Support up to 18V input (system compatibility)
Dropout Voltage: Maximum acceptable at rated current
Regulatory Compliance: ROHS3 compliance maintained

The AZ1117R-5.0TRE1 qualifies as a direct substitute because it maintains the same output voltage, package type, and exceeds the minimum output current specification while meeting all regulatory requirements.

Parameter Comparison

Parameter	AP1117Y50L-13	AZ1117R-5.0TRE1	Compatibility
Output Voltage (Fixed)	5V	5V	Match
Output Current	1A	1.25A	Compatible (higher rating)
Package / Case	TO-243AA (SOT-89-3)	TO-243AA (SOT-89-3)	Match
Input Voltage (Max)	18V	15V	Compatible (lower max acceptable for most applications)
Dropout Voltage (Max)	1.4V @ 1A	1.25V @ 1A	Compatible (improved performance)
Operating Temperature	0°C ~ 125°C	-40°C ~ 125°C	Compatible (extended lower range)
Quiescent Current	10 mA	10 mA	Match
PSRR	60dB (180Hz)	75dB (120Hz)	Compatible (improved performance)
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Match
Product Status	Obsolete	Active	Substitute is in active production

Engineering Selection Recommendations

The AZ1117R-5.0TRE1 is the qualified substitute for the AP1117Y50L-13 based on the following engineering criteria:

Regulatory Compliance: Both parts maintain ROHS3 compliance and REACH unaffected status, ensuring compatibility with current environmental and safety standards.

Product Status: The substitute part is in active production status, providing long-term availability and supply chain stability compared to the obsolete original part.

Electrical Performance: The substitute delivers equivalent or superior electrical characteristics across all critical parameters. The higher output current rating (1.25A vs 1A) provides design margin, while the improved dropout voltage (1.25V vs 1.4V) reduces power dissipation.

Thermal Performance: Extended operating temperature range (-40°C to 125°C vs 0°C to 125°C) accommodates broader environmental conditions.

Package Compatibility: Identical SOT-89-3 surface mount package ensures direct PCB layout compatibility without redesign.

Input Voltage Consideration: The substitute maximum input voltage of 15V is lower than the original 18V specification. Verify that your application input voltage does not exceed 15V before selection.

Frequently Asked Questions (FAQ)

Q: Can the AZ1117R-5.0TRE1 be used as a direct replacement on existing PCBs designed for the AP1117Y50L-13?

A: Yes. Both parts use identical SOT-89-3 surface mount packages with the same pinout and footprint. No PCB modifications are required for mechanical or electrical compatibility.

Q: What is the key difference in input voltage specifications between these parts?

A: The AP1117Y50L-13 supports input voltages up to 18V, while the AZ1117R-5.0TRE1 supports up to 15V. If your application requires input voltages between 15V and 18V, the substitute is not suitable. For applications with input voltages at or below 15V, the substitute is fully compatible.

Q: Does the higher output current rating of the AZ1117R-5.0TRE1 (1.25A vs 1A) affect compatibility?

A: No. A higher current rating is compatible with applications designed for lower current. The substitute can safely deliver the 1A required by the original design with improved thermal performance and design margin.

Q: Are there any differences in protection features between these parts?

A: The AP1117Y50L-13 includes over current and over temperature protection. The AZ1117R-5.0TRE1 includes thermal shutdown protection. Both provide thermal management; verify that thermal shutdown behavior is acceptable for your application.

Q: What is the packaging difference between the main part and substitute?

A: The AP1117Y50L-13 is supplied in standard packaging, while the AZ1117R-5.0TRE1 is supplied in Tape & Reel (TR) format. Both use the same SOT-89-3 component package. Tape & Reel format is standard for automated assembly and does not affect the component itself.

Q: Is the substitute part RoHS compliant?

A: Yes. The AZ1117R-5.0TRE1 is ROHS3 compliant, matching the compliance status of the original part.

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