AP7361-15D-13 Equivalent & Substitute Parts

Part Overview

The AP7361-15D-13 is a linear voltage regulator IC manufactured by Diodes Incorporated, designed to deliver a fixed 1.5V output at 1A maximum current. This positive fixed output regulator operates across an input voltage range up to 6V with a maximum dropout voltage of 0.7V at full load. The device is housed in a TO-252-3 (DPAK) surface mount package and is currently in active production status with 2600 units available in stock.

Linear voltage regulators of this specification are essential in applications requiring stable, low-noise power delivery for microcontrollers, analog circuits, and sensor interfaces. Equivalent and substitute parts become necessary when primary sources are unavailable, when design revisions require alternative suppliers, or when inventory constraints necessitate component sourcing flexibility.

Key Parameters

Parameter	Value
Output Voltage (Fixed)	1.5V
Maximum Output Current	1A
Maximum Input Voltage	6V
Maximum Dropout Voltage	0.7V @ 1A
Output Configuration	Positive Fixed
Package Type	TO-252-3 (DPAK)
Operating Temperature Range	-40°C to 85°C
Protection Features	Over Current, Over Temperature, Short Circuit
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the AP7361-15D-13 is determined by the following critical parameters:

Output Voltage Match: Fixed 1.5V output is mandatory
Package Compatibility: TO-252-3 (DPAK, SC-63) surface mount package required
Output Current Capability: Minimum 1A output current required for direct substitution
Input Voltage Range: Maximum input voltage of 5.5V or higher
Regulatory Compliance: ROHS3 compliance and EAR99 classification required
Thermal Performance: Operating temperature range of -40°C minimum and 85°C or higher maximum

The BD15KA5FP-E2 from Rohm Semiconductor meets the core substitution criteria of fixed 1.5V output in TO-252-3 packaging with ROHS3 compliance. However, this substitute has a reduced maximum output current specification of 500mA compared to the 1A rating of the primary part, making it suitable only for applications with current requirements not exceeding 500mA.

Parameter Comparison

Parameter	AP7361-15D-13 (Diodes Inc.)	BD15KA5FP-E2 (Rohm Semi.)	Compatibility Notes
Output Voltage (Fixed)	1.5V	1.5V	Matched
Maximum Output Current	1A	500mA	Substitute rated lower
Maximum Input Voltage	6V	5.5V	Substitute has lower rating
Maximum Dropout Voltage	0.7V @ 1A	0.2V @ 200mA	Different load conditions
Quiescent Current	90 µA	550 µA	Primary part lower
Package Type	TO-252-3 (DPAK)	TO-252-3 (DPAK)	Matched
Operating Temperature Range	-40°C to 85°C	-40°C to 105°C	Substitute has wider range
Protection Features	Over Current, Over Temperature, Short Circuit	Over Current, Over Temperature, Soft Start	Both include core protections
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Matched

Engineering Selection Recommendations

The BD15KA5FP-E2 is qualified as a substitute for the AP7361-15D-13 under the following conditions:

Current Requirement ≤ 500mA: Applications drawing maximum 500mA can use the BD15KA5FP-E2 as a direct replacement without circuit modification
Input Voltage ≤ 5.5V: The substitute's maximum input voltage rating of 5.5V must not be exceeded in the application circuit
Regulatory Compliance: Both parts maintain ROHS3 compliance and EAR99 classification, satisfying environmental and export requirements
Thermal Environment: The substitute's extended operating range to 105°C provides additional margin in high-temperature applications

For applications requiring the full 1A output current capability of the AP7361-15D-13, the BD15KA5FP-E2 is not suitable as a direct substitute. Alternative parts with 1A or higher output current ratings must be sourced.

Frequently Asked Questions (FAQ)

Q: Can the BD15KA5FP-E2 replace the AP7361-15D-13 in all applications?

A: No. The BD15KA5FP-E2 has a maximum output current of 500mA, while the AP7361-15D-13 is rated for 1A. Substitution is valid only for applications with maximum current draw not exceeding 500mA.

Q: Are the packages physically identical?

A: Both parts use the TO-252-3 package (DPAK, SC-63) with identical pinout and footprint. PCB layout compatibility is maintained without modification.

Q: What is the impact of the lower quiescent current in the AP7361-15D-13?

A: The AP7361-15D-13 draws 90 µA quiescent current versus 550 µA for the BD15KA5FP-E2. In battery-powered or low-power standby applications, the primary part provides superior efficiency.

Q: Does the substitute's lower dropout voltage affect substitution suitability?

A: The dropout voltage specifications are measured at different load conditions (0.7V @ 1A for AP7361-15D-13 versus 0.2V @ 200mA for BD15KA5FP-E2). Direct comparison is not applicable. The substitute's dropout performance at 500mA maximum load must be verified against application requirements.

Q: Are both parts RoHS compliant?

A: Yes. Both the AP7361-15D-13 and BD15KA5FP-E2 are ROHS3 compliant and REACH unaffected, meeting current environmental regulations.

Q: What is the difference in operating temperature ranges?

A: The AP7361-15D-13 operates from -40°C to 85°C, while the BD15KA5FP-E2 extends to 105°C maximum. For applications operating above 85°C, the substitute provides additional thermal margin.

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