AP7361-12E-13 Equivalent & Substitute Parts

Part Overview

The AP7361-12E-13 is a linear voltage regulator IC from Diodes Incorporated, classified as a Power Management (PMIC) component. This positive fixed output regulator delivers 1A at 1.2V and is housed in a SOT-223-3 package for surface mount applications. The part is currently in active production status with 2300 units available in inventory. Alternative models become necessary when specific packaging formats, current output requirements, or supply chain constraints require component substitution while maintaining functional equivalence.

Key Parameters

Parameter	Value
Manufacturer Part Number	AP7361-12E-13
Manufacturer	Diodes Incorporated
Category	Power Management (PMIC)
Output Voltage (Fixed)	1.2V
Output Current	1A
Input Voltage (Max)	6V
Voltage Dropout (Max)	0.7V @ 1A
Quiescent Current	90 µA
Operating Temperature Range	-40°C ~ 85°C
Package Type	SOT-223-3
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Product Status	Active

Substitute Part Grouping Explanation

Substitute parts for the AP7361-12E-13 are classified based on strict electrical and mechanical parameter alignment:

Parametric Equivalent (AP7361-12ER-13): This substitute maintains identical electrical specifications including 1.2V fixed output, 1A output current, 6V maximum input voltage, 0.7V dropout voltage, and 90 µA quiescent current. The primary difference is packaging format: AP7361-12ER-13 is supplied in Cut Tape (CT) & Digi-Reel® format versus Tape & Reel (TR) for the main part. Both use SOT-223 package variants (SOT-223-3 versus SOT-223R) and share identical base product number AP7361. This substitution is valid when packaging format flexibility exists.

Manufacturer Recommended Equivalent (MCP1824ST-1202E/DB): This Microchip Technology part provides functional equivalence with the same 1.2V fixed output and 6V maximum input voltage. However, output current is reduced to 300mA (versus 1A), and quiescent current increases to 220 µA (versus 90 µA). Dropout voltage improves to 0.32V @ 300mA. Operating temperature extends to 125°C maximum. This substitution is valid only when application current requirements do not exceed 300mA.

Key Parameters Determining Substitution:

Fixed output voltage: 1.2V
Maximum input voltage: 6V
Output current capability
Voltage dropout characteristics
Package compatibility (SOT-223 family)
Surface mount mounting type

Parameter Comparison

Parameter	AP7361-12E-13	AP7361-12ER-13	MCP1824ST-1202E/DB
Manufacturer	Diodes Incorporated	Diodes Incorporated	Microchip Technology
Output Voltage (Fixed)	1.2V	1.2V	1.2V
Output Current	1A	1A	300mA
Input Voltage (Max)	6V	6V	6V
Voltage Dropout (Max)	0.7V @ 1A	0.7V @ 1A	0.32V @ 300mA
Quiescent Current	90 µA	90 µA	220 µA
Operating Temperature (Max)	85°C	85°C	125°C
Package Type	SOT-223-3	SOT-223R	SOT-223-3
Packaging Format	Tape & Reel (TR)	Cut Tape & Digi-Reel®	Tape & Reel (TR)
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Active	Active	Active

Engineering Selection Recommendations

All three parts maintain active production status and ROHS3 compliance, ensuring long-term availability and regulatory alignment for industrial applications.

AP7361-12ER-13 is the primary substitute when packaging format changes are acceptable. Electrical performance is identical to the main part, making this a direct functional replacement. Selection of this part is appropriate when Cut Tape or Digi-Reel® packaging meets procurement requirements.

MCP1824ST-1202E/DB is suitable only for applications where maximum output current does not exceed 300mA. This part offers improved dropout voltage performance (0.32V versus 0.7V) and extended operating temperature range to 125°C, which may provide advantages in thermally constrained designs. However, the increased quiescent current (220 µA versus 90 µA) may impact low-power standby applications.

Selection between AP7361-12E-13 and AP7361-12ER-13 depends solely on packaging format availability and procurement logistics, as electrical specifications are identical. Selection of MCP1824ST-1202E/DB requires confirmation that application current requirements remain within the 300mA maximum output specification.

Frequently Asked Questions (FAQ)

Q: Can AP7361-12ER-13 be used as a direct replacement for AP7361-12E-13?

A: Yes. Both parts share identical electrical specifications including 1.2V output voltage, 1A output current, 6V maximum input voltage, 0.7V dropout voltage, and 90 µA quiescent current. The only difference is packaging format (Cut Tape & Digi-Reel® versus Tape & Reel). PCB layout and circuit design remain unchanged.

Q: What are the limitations of using MCP1824ST-1202E/DB as a substitute?

A: The MCP1824ST-1202E/DB has a maximum output current of 300mA, compared to 1A for the AP7361-12E-13. This part is only suitable for applications requiring 300mA or less. Additionally, quiescent current is higher at 220 µA versus 90 µA, which may affect low-power applications.

Q: Are all three parts compatible with the same PCB footprint?

A: AP7361-12E-13 and AP7361-12ER-13 use SOT-223 package variants (SOT-223-3 and SOT-223R respectively) with compatible footprints. MCP1824ST-1202E/DB also uses SOT-223-3 package. All three parts are surface mount compatible with standard SOT-223 PCB layouts.

Q: What is the difference between SOT-223-3 and SOT-223R packages?

A: Both are SOT-223 family packages suitable for surface mount applications. SOT-223R is a variant designation used by some manufacturers. Pin configurations and footprints are compatible for standard SOT-223 designs.

Q: Which part should be selected for high-temperature applications?

A: MCP1824ST-1202E/DB supports operating temperatures up to 125°C, compared to 85°C for both AP7361 variants. However, this selection is only valid if application current requirements do not exceed 300mA.

Q: Are all parts RoHS compliant?

A: Yes. AP7361-12E-13, AP7361-12ER-13, and MCP1824ST-1202E/DB are all ROHS3 compliant and suitable for applications requiring RoHS certification.

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