AP7342D-3333FS6-7 Equivalent & Substitute Parts

Part Overview

The AP7342D-3333FS6-7 is a linear voltage regulator IC from Diodes Incorporated designed for positive fixed dual-output applications. This Power Management (PMIC) component delivers 150mA per output at 3.3V with a maximum dropout voltage of 0.29V. The part is classified as Last Time Buy, indicating end-of-life status. Identifying equivalent and substitute parts is necessary to ensure design continuity and maintain supply chain reliability for applications requiring dual-output 3.3V regulation.

Substiute Parts

AP7342D-3333FS6-7

Diodes IncorporatedIn Stock: 679AP7342D-3333FS6-7 Datasheet

Current PartRFQ

AP7345D-3333RH4-7

Diodes IncorporatedIn Stock: 722AP7345D-3333RH4-7 Datasheet

MFR RecommendedRFQ

AP7342D-3333FS6-7

Diodes IncorporatedIn Stock: 679AP7342D-3333FS6-7 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the AP7342D-3333FS6-7 is determined by the following critical parameters:

• Dual positive fixed output configuration at 3.3V
• Maximum input voltage of 5.25V
• Output current capability per channel
• Dropout voltage performance
• Package compatibility and pin count
• Operating temperature range (-40°C ~ 85°C)
• Control features (Enable function)
• Protection features (Over Current or Short Circuit)
• RoHS3 compliance and MSL rating

The AP7345D-3333RH4-7 qualifies as a manufacturer-recommended substitute. While it maintains the same output voltage (3.3V dual output) and input specifications, it provides doubled output current (300mA per channel versus 150mA) and operates in an 8-pin package versus the 6-pin original. This represents a higher-performance alternative suitable for applications requiring increased current delivery.

Parameter Comparison

Engineering Selection Recommendations

The AP7345D-3333RH4-7 is the manufacturer-recommended substitute for the AP7342D-3333FS6-7. Selection between these parts depends on application current requirements:

Use the AP7342D-3333FS6-7 for applications requiring exactly 150mA per output channel with minimal board space constraints, provided inventory availability is confirmed.

Use the AP7345D-3333RH4-7 for applications requiring up to 300mA per output channel. This part carries Active product status, ensuring long-term availability and supply chain stability. The increased quiescent current (140 µA versus 100 µA) and additional control features (Current Limit) represent the trade-off for doubled output current capability.

Both parts maintain identical output voltage specifications (3.3V dual output), maximum input voltage (5.25V), operating temperature range (-40°C ~ 85°C), and regulatory compliance (ROHS3, MSL 1). Package differences (6-pin versus 8-pin XFDFN) require PCB layout modification but do not affect electrical compatibility of the core regulation function.

Frequently Asked Questions (FAQ)

Q: Can the AP7345D-3333RH4-7 directly replace the AP7342D-3333FS6-7 on an existing PCB?

A: Direct PCB replacement is not possible due to package differences. The AP7342D-3333FS6-7 uses a 6-pin X2-DFN1212-6 package, while the AP7345D-3333RH4-7 uses an 8-pin X2-DFN1612-8 package. PCB layout redesign is required, including footprint modification and potential trace routing changes.

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

A: The primary difference is output current capability: 150mA per channel (AP7342D-3333FS6-7) versus 300mA per channel (AP7345D-3333RH4-7). Both maintain identical 3.3V output voltage, 5.25V maximum input voltage, and 0.29V dropout voltage at their respective rated currents. Quiescent current increases from 100 µA to 140 µA in the substitute part.

Q: Why is the AP7342D-3333FS6-7 marked as Last Time Buy?

A: Last Time Buy status indicates the manufacturer has discontinued this product line. The AP7345D-3333RH4-7, with Active status, represents the current production alternative from Diodes Incorporated for dual-output 3.3V regulation applications.

Q: Are both parts RoHS3 compliant?

A: Yes. Both the AP7342D-3333FS6-7 and AP7345D-3333RH4-7 are ROHS3 compliant with MSL rating of 1 (Unlimited moisture sensitivity level).

Q: What protection features does each part provide?

A: The AP7342D-3333FS6-7 includes Over Current protection. The AP7345D-3333RH4-7 includes Short Circuit protection and adds Current Limit control features, providing enhanced protection for higher current applications.