AP7341D-12FS4-7 Equivalent & Substitute Parts

Part Overview

The AP7341D-12FS4-7 is a linear voltage regulator IC from Diodes Incorporated, delivering a fixed 1.2V output at 300mA with integrated enable control and over-current protection. This device operates across the -40°C to 85°C temperature range and is packaged in a 4-XDFN Exposed Pad surface-mount configuration. The part is currently Active in product status with ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1).

Equivalent and substitute parts are identified based on matching electrical performance parameters, package compatibility, and regulatory compliance. Alternative sources become necessary for supply chain optimization, inventory management, or when the primary part reaches end-of-life status.

Substiute Parts

AP7341D-12FS4-7

Diodes IncorporatedIn Stock: 765AP7341D-12FS4-7 Datasheet

Current PartRFQ

AP7341-12FS4-7

Diodes IncorporatedIn Stock: 5155AP7341-12FS4-7 Datasheet

Parametric EquivalentRFQ

AP7343-12FS4-7B

Diodes IncorporatedIn Stock: 882AP7343-12FS4-7B Datasheet

Parametric EquivalentRFQ

AP7343D-12FS4-7B

Diodes IncorporatedIn Stock: 119156AP7343D-12FS4-7B Datasheet

Parametric EquivalentRFQ

BU12UA3WNVX-TL

Rohm SemiconductorIn Stock: 4883BU12UA3WNVX-TL Datasheet

MFR RecommendedRFQ

NCP177AMX120TCG

onsemiIn Stock: 1307NCP177AMX120TCG Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the AP7341D-12FS4-7 are classified into two categories based on electrical and mechanical compatibility:

Parametric Equivalents (Direct Substitutes): Parts that maintain identical or functionally equivalent electrical specifications within the allowed tolerance range. These include AP7341-12FS4-7, AP7343-12FS4-7B, and AP7343D-12FS4-7B. All three share the same 1.2V fixed output, 300mA current rating, 4-XDFN package, and operating temperature range. Minor variations in voltage dropout and quiescent current do not prevent functional substitution in most applications.

Manufacturer Recommended Alternatives: Parts from different manufacturers (Rohm Semiconductor BU12UA3WNVX-TL and onsemi NCP177AMX120TCG) that meet the core electrical requirements but may differ in secondary parameters such as input voltage maximum, quiescent current, or output current capability. These are suitable when primary equivalents are unavailable.

Substitution is determined by the following key parameters:

• Fixed output voltage: 1.2V
• Output current capability: 300mA minimum
• Package type: 4-XDFN Exposed Pad or compatible footprint
• Operating temperature range: -40°C to 85°C
• Control features: Enable function required
• Protection: Over-current protection required

Parameter Comparison

Engineering Selection Recommendations

For Direct Substitution (Diodes Incorporated Parts): AP7341-12FS4-7, AP7343-12FS4-7B, and AP7343D-12FS4-7B are all Active products with ROHS3 compliance and identical package footprints. These parts are interchangeable at the PCB level. The primary difference between AP7341D-12FS4-7 and AP7341-12FS4-7 is packaging format (Tape & Reel only for the latter). AP7343 variants offer improved voltage dropout performance (0.58V vs. 0.65V) with slightly higher quiescent current (60 µA vs. 50 µA). Selection between these should be based on supply availability and packaging requirements.

For Cross-Manufacturer Substitution: BU12UA3WNVX-TL from Rohm Semiconductor carries a "Not For New Designs" status, making it unsuitable for new product development. This part should only be considered for legacy system maintenance or repair applications. The NCP177AMX120TCG from onsemi is an Active product with higher output current capability (500mA vs. 300mA), making it suitable for applications requiring additional current headroom. However, the 4-UDFN package of the Rohm part differs from the 4-XDFN standard, requiring PCB layout verification before implementation.

Compliance Considerations: All substitute parts maintain ROHS3 compliance, REACH Unaffected status, and MSL 1 (Unlimited) moisture sensitivity rating, ensuring regulatory compatibility with the original AP7341D-12FS4-7.

Frequently Asked Questions (FAQ)

Q: Can AP7341-12FS4-7 replace AP7341D-12FS4-7 directly? A: Yes. Both parts are electrically identical with matching 1.2V output, 300mA current, and 4-XDFN package. The primary difference is packaging format: AP7341-12FS4-7 is supplied in Tape & Reel only, while AP7341D-12FS4-7 offers Tape & Reel packaging. PCB footprint and electrical performance are identical.

Q: What is the difference between AP7343-12FS4-7B and AP7341D-12FS4-7? A: Both deliver 1.2V at 300mA in the same 4-XDFN package. AP7343-12FS4-7B has lower voltage dropout (0.58V vs. 0.65V) but higher quiescent current (60 µA vs. 50 µA). The AP7343 variant is preferable in applications where lower dropout voltage reduces heat dissipation requirements.

Q: Is BU12UA3WNVX-TL suitable for new designs? A: No. Rohm Semiconductor has designated this part as "Not For New Designs." It is restricted to legacy system support and repair applications only. For new product development, use Active-status alternatives such as AP7343D-12FS4-7B or NCP177AMX120TCG.

Q: Can NCP177AMX120TCG be used as a drop-in replacement? A: NCP177AMX120TCG shares the 1.2V output and 4-XDFN package with AP7341D-12FS4-7, but offers higher output current (500mA vs. 300mA). It is electrically compatible and suitable for applications requiring additional current capacity. Verify PCB layout compatibility with the onsemi datasheet before implementation.

Q: What packaging formats are available for these substitutes? A: AP7341D-12FS4-7 and AP7341-12FS4-7 are supplied in Tape & Reel. AP7343D-12FS4-7B is available in Cut Tape & Digi-Reel format. BU12UA3WNVX-TL and NCP177AMX120TCG are supplied in Tape & Reel. Confirm packaging availability with your supplier before ordering.

Q: Are all substitutes RoHS compliant? A: Yes. All listed substitute parts maintain ROHS3 compliance and REACH Unaffected status, matching the regulatory profile of AP7341D-12FS4-7.