AP7361C-18ER-13 Equivalent & Substitute Parts

Part Overview

The AP7361C-18ER-13 is a linear voltage regulator IC from Diodes Incorporated, delivering a fixed 1.8V output at 1A in a surface-mount SOT-223R package. This device is classified as active product status and is ROHS3 compliant. Equivalent and substitute parts are identified when component availability is limited, supply chain disruptions occur, or design flexibility is required while maintaining electrical and mechanical compatibility within the specified parameter ranges.

Key Parameters

Parameter	Value
Manufacturer Part Number	AP7361C-18ER-13
Manufacturer	Diodes Incorporated
Category	Power Management (PMIC)
Output Voltage (Fixed)	1.8V
Output Current	1A
Input Voltage (Max)	6V
Voltage Dropout (Max)	0.57V @ 1A (Typ)
Quiescent Current (Iq)	80 µA
Package / Case	TO-261-4, TO-261AA (SOT-223R)
Operating Temperature Range	-40°C ~ 85°C
Protection Features	Over Current, Over Temperature
RoHS Status	ROHS3 Compliant
Product Status	Active

Substitute Part Grouping Explanation

Substitute parts for the AP7361C-18ER-13 are qualified based on the following electrical and mechanical parameters:

Fixed output voltage of 1.8V
Output current rating of 1A
Maximum input voltage of 6V
Surface-mount packaging (SOT-223 or equivalent footprint)
Operating temperature range of -40°C to 85°C
Over current and over temperature protection features
ROHS3 compliance and active product status

The substitute parts AP2114H-1.8TRG1 and AP2114HA-1.8TRG1 meet these criteria. Both are linear voltage regulators from Diodes Incorporated with identical output specifications, input voltage ratings, and thermal operating ranges. Package compatibility is maintained through TO-261-4 and TO-261AA case designations.

Parameter Comparison

Parameter	AP7361C-18ER-13	AP2114H-1.8TRG1	AP2114HA-1.8TRG1
Manufacturer	Diodes Incorporated	Diodes Incorporated	Diodes Incorporated
Output Voltage (Fixed)	1.8V	1.8V	1.8V
Output Current	1A	1A	1A
Input Voltage (Max)	6V	6V	6V
Voltage Dropout (Max)	0.57V @ 1A (Typ)	0.7V @ 1A	0.7V @ 1A
Quiescent Current (Iq)	80 µA	75 µA	75 µA
Package / Case	TO-261-4, TO-261AA (SOT-223R)	TO-261-4, TO-261AA (SOT-223-3)	TO-261-4, TO-261AA (SOT-223-3)
Operating Temperature Range	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C
Protection Features	Over Current, Over Temperature	Over Current, Over Temperature	Over Current, Over Temperature
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Active	Active	Active
Moisture Sensitivity Level (MSL)	1 (Unlimited)	3 (168 Hours)	3 (168 Hours)

Engineering Selection Recommendations

All three parts—AP7361C-18ER-13, AP2114H-1.8TRG1, and AP2114HA-1.8TRG1—are active products from Diodes Incorporated with ROHS3 compliance and REACH unaffected status. Selection between these parts is determined by availability and moisture sensitivity requirements.

The AP7361C-18ER-13 features MSL 1 (unlimited moisture sensitivity), making it suitable for applications with extended storage or high-humidity environments without baking requirements. The AP2114H-1.8TRG1 and AP2114HA-1.8TRG1 both carry MSL 3 (168 hours), requiring moisture control during storage and handling.

Electrical performance differences are minimal. The AP7361C-18ER-13 exhibits a lower typical dropout voltage of 0.57V compared to 0.7V for the AP2114 variants, and a slightly higher quiescent current of 80 µA versus 75 µA. These differences are within acceptable tolerances for most 1.8V linear regulator applications.

Frequently Asked Questions (FAQ)

Q: Can AP2114H-1.8TRG1 or AP2114HA-1.8TRG1 be used as direct replacements for AP7361C-18ER-13?

A: Yes, both parts are direct electrical and mechanical substitutes. All three devices deliver 1.8V at 1A with identical input voltage ratings, operating temperature ranges, and protection features. Package footprints are compatible (TO-261-4, TO-261AA). The primary consideration is moisture sensitivity level (MSL), which differs between the main part and substitutes.

Q: What is the difference between AP2114H-1.8TRG1 and AP2114HA-1.8TRG1?

A: Both parts are parametrically equivalent with identical electrical specifications. The distinction lies in inventory availability and potential internal design variations within the AP2114 family. Selection between them is based on supply chain availability.

Q: Are there package compatibility concerns when substituting these parts?

A: No. All three parts use TO-261-4 and TO-261AA case designations, which are mechanically and electrically compatible. The SOT-223R and SOT-223-3 supplier device packages are functionally equivalent for PCB layout and assembly purposes.

Q: How does the MSL 3 rating of the AP2114 variants affect component handling?

A: MSL 3 requires moisture baking for 168 hours if the component has been exposed to humidity above specified levels during storage. MSL 1 (AP7361C-18ER-13) has no such requirement. For applications with controlled storage environments, this difference is negligible.

Q: What are the key electrical differences between these parts?

A: Dropout voltage differs slightly (0.57V typical for AP7361C-18ER-13 versus 0.7V for AP2114 variants) and quiescent current is marginally higher in the AP7361C-18ER-13 (80 µA versus 75 µA). Both differences are within acceptable operating margins for 1.8V regulator applications and do not affect functional compatibility.

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