AP7346D-3018FS6-7 Equivalent & Substitute Parts

Part Overview

The AP7346D-3018FS6-7 is a linear voltage regulator IC from Diodes Incorporated designed for dual-output power management applications. This device provides positive fixed outputs at 1.8V and 3V with 130mA per channel, housed in a 6-pin X2-DFN1212-6 package. The part is classified as Last Time Buy, indicating end-of-life status. Identifying equivalent and substitute parts is necessary to ensure design continuity, maintain supply chain flexibility, and support long-term product availability for applications requiring dual-output linear regulation.

Substiute Parts

AP7346D-3018FS6-7

Diodes IncorporatedIn Stock: 5919AP7346D-3018FS6-7 Datasheet

Current PartRFQ

AP7345D-3018RH4-7

Diodes IncorporatedIn Stock: 947AP7345D-3018RH4-7 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the AP7346D-3018FS6-7 is based on the following critical parameters:

• Dual positive fixed output configuration at 1.8V and 3V
• Maximum input voltage of 5.25V
• Operating temperature range of -40°C to 85°C
• Surface mount packaging with exposed pad design
• ROHS3 compliance and REACH unaffected status

The AP7345D-3018RH4-7 qualifies as a substitute based on matching output voltage levels, input voltage specification, operating temperature range, and regulatory compliance. However, this substitute exhibits higher output current capability (300mA per channel versus 130mA) and different package geometry (8-pin X2-DFN1612-8 versus 6-pin X2-DFN1212-6), requiring PCB layout verification.

Parameter Comparison

Engineering Selection Recommendations

The AP7345D-3018RH4-7 is the manufacturer-recommended substitute for the AP7346D-3018FS6-7. Both devices maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment. The substitute part carries Active product status, providing extended availability compared to the Last Time Buy status of the main part.

Key considerations for selection:

• The substitute provides higher output current capability (300mA versus 130mA per channel), making it suitable for applications requiring increased current headroom
• Package footprint differs (8-pin versus 6-pin), necessitating PCB layout redesign
• Quiescent current is slightly elevated (140 µA versus 100 µA), with minimal impact on standby power consumption
• Dropout voltage performance is comparable across both devices at their respective rated currents

Frequently Asked Questions (FAQ)

Q: Can the AP7345D-3018RH4-7 directly replace the AP7346D-3018FS6-7 without PCB modification?

A: No. The substitute uses an 8-pin X2-DFN1612-8 package versus the 6-pin X2-DFN1212-6 package of the main part. PCB layout redesign is required, including pad repositioning and trace routing adjustments.

Q: Are the output voltage levels identical between the two parts?

A: Yes. Both devices provide fixed outputs at 1.8V and 3V with the same input voltage specification of 5.25V maximum.

Q: What is the impact of higher output current on thermal performance?

A: The substitute's 300mA per channel capability versus 130mA on the main part may result in different thermal characteristics. Thermal analysis specific to your application load profile is necessary.

Q: Do both parts support the same control features?

A: The main part includes Enable control with Over Current protection. The substitute includes Enable control with Current Limit and Short Circuit protection, providing enhanced protection features.

Q: Is the substitute suitable for applications currently using the main part at full 130mA load?

A: Yes. The substitute operates within specification at 130mA and below, with improved dropout voltage performance at this current level.

Q: Are there supply chain differences between the two parts?

A: The main part is Last Time Buy with 5878 units in stock. The substitute is Active status with 921 units in stock, indicating ongoing availability and production support.