AP7341-12FS4-7 Equivalent & Substitute Parts

Part Overview

The AP7341-12FS4-7 is a linear voltage regulator IC from Diodes Incorporated, classified as a Power Management (PMIC) component. It delivers a fixed 1.2V output at 300mA with a maximum dropout voltage of 0.65V at rated current. The device is mounted in a 4-XDFN Exposed Pad package and is currently in active production status. Substitute parts are necessary when primary inventory is unavailable, when alternative packaging formats are required, or when design revisions call for enhanced performance characteristics such as lower quiescent current or improved dropout voltage specifications.

Key Parameters

Parameter	Value
Manufacturer	Diodes Incorporated
Part Number	AP7341-12FS4-7
Category	Power Management (PMIC)
Output Voltage (Fixed)	1.2V
Output Current	300mA
Maximum Input Voltage	5.25V
Maximum Dropout Voltage	0.65V @ 300mA
Quiescent Current	50 µA
PSRR	75dB (1kHz)
Operating Temperature Range	-40°C ~ 85°C
Package	4-XDFN Exposed Pad
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
MSL Rating	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the AP7341-12FS4-7 are classified into two categories based on substitution criteria:

Parametric Equivalents (Diodes Incorporated Family): AP7341D-12FS4-7, AP7343-12FS4-7B, and AP7343D-12FS4-7B maintain identical output voltage (1.2V), output current (300mA), package type (4-XDFN Exposed Pad), and operating temperature range (-40°C ~ 85°C). These parts differ in packaging format (Tape & Reel versus Cut Tape & Digi-Reel), quiescent current specifications, and dropout voltage performance. Substitution within this group is valid when the application tolerates the specified parameter variations.

Manufacturer-Recommended Alternatives: BU12UA3WNVX-TL (Rohm Semiconductor) and NCP177AMX120TCG (onsemi) are cross-manufacturer alternatives that maintain the 1.2V fixed output voltage and 300mA minimum current rating. These parts operate within the same temperature range and package class but introduce variations in maximum input voltage, quiescent current, and current output capacity that must be evaluated for specific application requirements.

Key parameters determining substitution validity:

Output voltage: 1.2V (fixed)
Output current: 300mA minimum
Package type: 4-XDFN or equivalent Exposed Pad format
Operating temperature: -40°C ~ 85°C
Surface mount configuration

Parameter Comparison

Parameter	AP7341-12FS4-7	AP7341D-12FS4-7	AP7343-12FS4-7B	AP7343D-12FS4-7B	BU12UA3WNVX-TL	NCP177AMX120TCG
Manufacturer	Diodes Inc.	Diodes Inc.	Diodes Inc.	Diodes Inc.	Rohm Semi.	onsemi
Output Voltage	1.2V	1.2V	1.2V	1.2V	1.2V	1.2V
Output Current	300mA	300mA	300mA	300mA	300mA	500mA
Max Input Voltage	5.25V	5.25V	5.25V	5.25V	5.5V	5.5V
Dropout Voltage @ 300mA	0.65V	0.65V	0.58V	0.58V	0.5V	—
Quiescent Current	50 µA	50 µA	60 µA	60 µA	90 µA	90 µA
PSRR (1kHz)	75dB	75dB	75dB	75dB	70dB	75dB
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C
Package	4-XDFN	4-XDFN	4-XDFN	4-XDFN	4-UDFN	4-XDFN
Packaging Format	Tape & Reel	Tape & Reel	Tape & Reel	Cut Tape & Digi-Reel	Tape & Reel	Tape & Reel
Product Status	Active	Active	Active	Active	Not For New Designs	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
MSL Rating	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

Diodes Incorporated Family (AP7341D-12FS4-7, AP7343-12FS4-7B, AP7343D-12FS4-7B): These parts maintain active production status and full ROHS3 compliance. AP7341D-12FS4-7 is electrically identical to the primary part and suitable for direct substitution. AP7343 variants offer improved dropout voltage performance (0.58V versus 0.65V) at the cost of slightly elevated quiescent current (60 µA versus 50 µA). AP7343D-12FS4-7B provides the highest inventory availability (119,145 units) and is available in Cut Tape & Digi-Reel packaging, making it suitable for applications where reel format is not required.

Cross-Manufacturer Alternatives: BU12UA3WNVX-TL (Rohm Semiconductor) carries a "Not For New Designs" status and should be used only when existing inventory constraints or legacy design requirements necessitate its use. NCP177AMX120TCG (onsemi) is actively produced and offers superior current capacity (500mA versus 300mA), lower dropout voltage (0.5V), and higher maximum input voltage (5.5V), making it suitable for applications requiring enhanced performance margins. The elevated quiescent current (90 µA) must be evaluated against power budget constraints.

Compliance and Certification: All listed parts maintain ROHS3 compliance, MSL Level 1 (Unlimited) moisture sensitivity rating, and REACH Unaffected status, ensuring regulatory compatibility across industrial and commercial applications.

Frequently Asked Questions (FAQ)

Q: Can AP7341D-12FS4-7 be used as a direct replacement for AP7341-12FS4-7?

A: Yes. AP7341D-12FS4-7 is electrically and functionally identical to AP7341-12FS4-7. Both parts deliver 1.2V at 300mA with 0.65V maximum dropout voltage and 50 µA quiescent current. The primary difference is packaging format (Tape & Reel for both), with AP7341D-12FS4-7 currently showing lower inventory (731 units versus 5,100 units).

Q: What is the advantage of AP7343-12FS4-7B over AP7341-12FS4-7?

A: AP7343-12FS4-7B reduces dropout voltage from 0.65V to 0.58V at 300mA output current, improving efficiency in applications with tight input-to-output voltage margins. Quiescent current increases from 50 µA to 60 µA. Both parts maintain identical 1.2V output, 300mA current rating, and 4-XDFN package configuration.

Q: Is NCP177AMX120TCG suitable for designs originally specified for AP7341-12FS4-7?

A: NCP177AMX120TCG is functionally compatible for applications requiring 1.2V output at 300mA or less. The part offers superior specifications: 500mA maximum output current, 0.5V dropout voltage, and 5.5V maximum input voltage. However, quiescent current is elevated to 90 µA. Verify that the application can tolerate the increased standby current consumption and that the onsemi device is acceptable for your supply chain and qualification requirements.

Q: Why is BU12UA3WNVX-TL marked "Not For New Designs"?

A: BU12UA3WNVX-TL carries this designation from Rohm Semiconductor, indicating the manufacturer is transitioning away from this product line. While the part is functionally compatible (1.2V output, 300mA current, -40°C ~ 85°C operation), it should be used only when existing inventory must be consumed or legacy designs require continuity. New designs should prioritize active-status alternatives such as AP7343D-12FS4-7B or NCP177AMX120TCG.

Q: Are all substitute parts available in the same package format?

A: AP7341-12FS4-7, AP7341D-12FS4-7, AP7343-12FS4-7B, and NCP177AMX120TCG are all supplied in 4-XDFN Exposed Pad packages. AP7343D-12FS4-7B is available in Cut Tape & Digi-Reel format in addition to standard reel packaging. BU12UA3WNVX-TL uses a 4-UDFN Exposed Pad package, which is mechanically similar but may require PCB layout verification for pin-to-pad alignment.

Q: What compliance certifications apply to all substitute parts?

A: All listed parts maintain ROHS3 compliance, MSL Level 1 (Unlimited) moisture sensitivity rating, and REACH Unaffected status. ECCN classification is EAR99 for all parts, and HTSUS code is 8542.39.0001. These certifications ensure regulatory compatibility for industrial, commercial, and consumer applications.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message