AP1117Y25G-13 Equivalent & Substitute Parts

Part Overview

The AP1117Y25G-13 is a linear voltage regulator IC from Diodes Incorporated, delivering a fixed 2.5V output at 1A in a SOT-89-3 surface mount package. This part is classified as obsolete, making identification of equivalent and substitute components essential for ongoing design support and production continuity. The AP1117Y25G-13 serves applications requiring stable low-voltage regulation with integrated thermal and overcurrent protection in compact form factors.

Key Parameters

Parameter	Value
Output Voltage (Fixed)	2.5V
Output Current	1A
Input Voltage (Max)	18V
Dropout Voltage (Max)	1.4V @ 1A
Quiescent Current	10 mA
PSRR	60dB (180Hz)
Operating Temperature Range	0°C to 125°C
Package	SOT-89-3 (TO-243AA)
Protection Features	Over Current, Over Temperature
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution for the AP1117Y25G-13 is determined by the following critical parameters: fixed 2.5V output voltage, 1A output current capability, SOT-89-3 package compatibility, and surface mount mounting type. All substitute parts must maintain these core electrical and mechanical specifications to ensure direct replacement without circuit redesign.

The substitute parts identified are grouped as follows:

Parametric Equivalents (Same Electrical Performance, Different Packaging):

AP1117Y25L-13: Identical electrical specifications to the main part, differentiated only by Cut Tape (CT) packaging versus the main part's standard packaging.

Manufacturer Recommended Substitute (Active Status, Enhanced Performance):

AZ1117CR-2.5TRG1: Active production part from Diodes Incorporated with equivalent core functionality. This part offers improved specifications including lower quiescent current (6 mA vs. 10 mA), higher PSRR (70dB vs. 60dB), and extended lower operating temperature range (-20°C vs. 0°C). Supplied in Tape & Reel (TR) packaging.

Parameter Comparison

Parameter	AP1117Y25G-13 (Main)	AP1117Y25L-13 (Parametric Equivalent)	AZ1117CR-2.5TRG1 (MFR Recommended)
Manufacturer	Diodes Incorporated	Diodes Incorporated	Diodes Incorporated
Output Voltage	2.5V	2.5V	2.5V
Output Current	1A	1A	1A
Input Voltage (Max)	18V	18V	15V
Dropout Voltage (Max)	1.4V @ 1A	1.4V @ 1A	Not specified
Quiescent Current	10 mA	10 mA	6 mA
PSRR	60dB (180Hz)	60dB (180Hz)	70dB (120Hz)
Operating Temperature	0°C to 125°C	0°C to 125°C	-20°C to 125°C
Package	SOT-89-3	SOT-89-3	SOT-89-3
Protection Features	Over Current, Over Temperature	Over Current, Over Temperature	Thermal Shutdown
Product Status	Obsolete	Obsolete	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected

Engineering Selection Recommendations

For new designs and production transitions, the AZ1117CR-2.5TRG1 is the preferred substitute. This part maintains full electrical and mechanical compatibility while offering active product status, ensuring long-term availability and supply chain stability. The AZ1117CR-2.5TRG1 provides measurable performance improvements including reduced quiescent current consumption and enhanced power supply rejection ratio, beneficial for low-power and noise-sensitive applications.

The AP1117Y25L-13 serves as a direct parametric equivalent for applications where existing inventory or specific packaging requirements (Cut Tape) are prioritized. Both the main part and this equivalent are obsolete; however, current inventory remains available.

All substitute parts maintain ROHS3 compliance and REACH unaffected status, satisfying regulatory requirements for current manufacturing standards.

Frequently Asked Questions (FAQ)

Q: Can the AZ1117CR-2.5TRG1 directly replace the AP1117Y25G-13 without circuit modification?

A: Yes. Both parts deliver 2.5V at 1A in identical SOT-89-3 packages with matching pin configurations. The AZ1117CR-2.5TRG1 operates within the same output voltage and current specifications, making it a direct mechanical and electrical replacement.

Q: What is the significance of the lower maximum input voltage (15V) on the AZ1117CR-2.5TRG1 compared to the AP1117Y25G-13 (18V)?

A: The AZ1117CR-2.5TRG1 specifies a 15V maximum input voltage versus 18V for the AP1117Y25G-13. Circuit designs must confirm that input voltage does not exceed 15V when using the AZ1117CR-2.5TRG1. If input voltage exceeds 15V, the AP1117Y25L-13 maintains the 18V specification.

Q: What packaging differences exist between these parts?

A: The AP1117Y25G-13 uses standard packaging, the AP1117Y25L-13 is supplied in Cut Tape (CT), and the AZ1117CR-2.5TRG1 is supplied in Tape & Reel (TR). All three use the SOT-89-3 package format. Packaging selection depends on production volume and assembly line requirements.

Q: Why is the AZ1117CR-2.5TRG1 recommended despite the lower maximum input voltage?

A: The AZ1117CR-2.5TRG1 is active production, ensuring availability for future orders and design revisions. The 15V input specification is sufficient for most 2.5V regulator applications. If 18V input capability is required, the AP1117Y25L-13 maintains this specification.

Q: Are all three parts compliant with current environmental and regulatory standards?

A: Yes. All three parts are ROHS3 compliant and REACH unaffected, meeting current manufacturing and environmental regulations.

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