AP7346D-1528FS6-7 Equivalent & Substitute Parts

Part Overview

The AP7346D-1528FS6-7 is a linear voltage regulator IC from Diodes Incorporated designed for positive fixed dual-output applications. This device integrates two independent 130mA regulators with fixed output voltages of 1.5V and 2.8V in a compact 6-pin X2-DFN1212-6 package. The part is currently in Last Time Buy status, indicating end-of-life production. Identifying qualified substitute components is necessary to ensure design continuity and maintain supply chain reliability for new production runs and long-term product support.

Substiute Parts

AP7346D-1528FS6-7

Diodes IncorporatedIn Stock: 10210AP7346D-1528FS6-7 Datasheet

Current PartRFQ

AP7345D-1528RH4-7

Diodes IncorporatedIn Stock: 789AP7345D-1528RH4-7 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the AP7346D-1528FS6-7 is evaluated based on the following critical parameters:

• Output voltage matching: Both regulators must provide fixed 1.5V and 2.8V outputs
• Input voltage compatibility: Maximum input voltage must be 5.25V or greater
• Output current capability: Minimum 130mA per output channel
• Thermal and environmental specifications: Operating temperature range -40°C to 85°C
• Regulatory compliance: ROHS3 and REACH status alignment
• Dual-output configuration: Two independent regulators in a single package

The AP7345D-1528RH4-7 qualifies as a direct substitute because it maintains identical output voltage specifications (1.5V and 2.8V), exceeds the current requirement (300mA per output versus 130mA), operates within the same temperature range, and meets all regulatory requirements. The primary design difference is the package format (8-pin X2-DFN1612-8 versus 6-pin X2-DFN1212-6) and enhanced current delivery capability.

Parameter Comparison

Engineering Selection Recommendations

The AP7345D-1528RH4-7 is the qualified substitute for the AP7346D-1528FS6-7 based on the following engineering criteria:

Functional Equivalence: Both devices deliver identical output voltage specifications (1.5V and 2.8V) with matching input voltage limits (5.25V maximum) and operating temperature ranges (-40°C to 85°C). The AP7345D-1528RH4-7 provides enhanced current delivery (300mA per output) compared to the original specification (130mA per output), ensuring compatibility with existing designs and providing design margin for future applications.

Regulatory Compliance: Both parts maintain ROHS3 compliance and REACH unaffected status, satisfying environmental and regulatory requirements for commercial and industrial applications.

Product Status Advantage: The AP7345D-1528RH4-7 is in Active production status, whereas the AP7346D-1528FS6-7 is designated Last Time Buy. This transition ensures long-term supply availability and manufacturing support.

Package Consideration: The substitute uses an 8-pin X2-DFN1612-8 package versus the original 6-pin X2-DFN1212-6 package. PCB layout modifications are required to accommodate the larger footprint and additional pins. The expanded package provides improved thermal performance and current distribution.

Frequently Asked Questions (FAQ)

Q: Can the AP7345D-1528RH4-7 directly replace the AP7346D-1528FS6-7 without circuit modifications?

A: Output voltage and electrical specifications are identical, enabling functional substitution. However, PCB layout changes are mandatory due to package size differences (6-pin to 8-pin, X2-DFN1212-6 to X2-DFN1612-8). Pin assignments must be verified against the respective datasheets before implementation.

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

A: The primary differences are output current capability (130mA versus 300mA per channel), package format (6-pin versus 8-pin), quiescent current (100 µA versus 140 µA), and product lifecycle status (Last Time Buy versus Active). Output voltages, input specifications, and thermal characteristics remain identical.

Q: Is the higher current rating of the AP7345D-1528RH4-7 a concern for existing designs?

A: No. Higher current capability provides design margin and does not negatively impact existing applications. The substitute will operate within the same voltage and thermal parameters as the original part when used at or below the original 130mA current specification.

Q: Are there any compliance or certification differences?

A: Both parts are ROHS3 compliant, REACH unaffected, and carry identical MSL ratings (1 - Unlimited). No compliance differences exist between the two devices.

Q: What is the impact of the package change on thermal performance?

A: The larger 8-pin X2-DFN1612-8 package provides improved thermal dissipation compared to the 6-pin X2-DFN1212-6 package. This enhancement supports higher current operation and reduces junction temperature under equivalent load conditions.