AR2003FV-13 Equivalent & Substitute Parts

Part Overview

The AR2003FV-13 is an active/synchronous rectification controller manufactured by Diodes Incorporated, designed for power supply applications requiring efficient rectifier control. This IC operates across a 4.5V to 21V supply voltage range and is housed in a 14-pin VFQFN package with exposed pad. The device maintains Active product status with full ROHS3 compliance and REACH unaffected certification. Substitute parts are identified when equivalent functional performance can be achieved within the specified electrical and mechanical parameter constraints of this power management category.

Substiute Parts

AR2003FV-13

Diodes IncorporatedIn Stock: 12228AR2003FV-13 Datasheet

Current PartRFQ

LT1681ESW#PBF

Analog Devices Inc.In Stock: 976LT1681ESW#PBF Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the AR2003FV-13 are qualified based on the following critical parameters that determine functional equivalence within the active/synchronous rectification controller category:

• Functional Classification: Active/synchronous rectification control capability
• Supply Voltage Range: Compatibility within or overlapping the 4.5V to 21V operating window
• Supply Current: Comparable quiescent current performance (5 mA reference)
• Operating Temperature Range: Support for industrial temperature specifications (-40°C to 125°C preferred)
• Mounting Technology: Surface mount configuration
• Regulatory Compliance: ROHS3 and REACH certification status
• Package Type: Consideration of pin count and thermal characteristics

The LT1681ESW#PBF qualifies as a manufacturer-recommended substitute based on functional equivalence in the synchronous forward controller category, though package and temperature range variations require engineering evaluation for specific application requirements.

Parameter Comparison

Engineering Selection Recommendations

Both the AR2003FV-13 and LT1681ESW#PBF maintain Active product status with full regulatory compliance under ROHS3 and REACH standards. Selection between these parts requires consideration of the following engineering factors:

AR2003FV-13 Advantages: Extended operating temperature range (-40°C to 125°C) supports high-temperature applications. 14-pin VFQFN package with exposed pad provides compact footprint suitable for space-constrained designs. Tape & Reel packaging supports automated assembly processes.

LT1681ESW#PBF Considerations: 20-pin SOIC package accommodates additional control and monitoring functions. Superior moisture sensitivity rating (MSL 1 vs. MSL 3) reduces handling and storage constraints. Operating temperature range limited to -40°C to 85°C requires verification for high-temperature applications.

Both devices carry identical ECCN (EAR99) and HTSUS (8542.39.0001) classifications, confirming regulatory equivalence for export and tariff purposes.

Frequently Asked Questions (FAQ)

Q: Can the LT1681ESW#PBF directly replace the AR2003FV-13 in existing PCB designs?

A: Direct PCB replacement is not possible due to package differences. The AR2003FV-13 uses a 14-pin VFQFN package while the LT1681ESW#PBF uses a 20-pin SOIC package. PCB layout redesign is required, including trace routing and thermal management modifications.

Q: What is the significance of the operating temperature range difference?

A: The AR2003FV-13 supports -40°C to 125°C operation, while the LT1681ESW#PBF operates to -40°C to 85°C. Applications requiring sustained operation above 85°C must use the AR2003FV-13 or verify that the LT1681ESW#PBF meets specific thermal requirements.

Q: How do the moisture sensitivity levels affect component handling?

A: The AR2003FV-13 (MSL 3) requires reflow within 168 hours of moisture exposure. The LT1681ESW#PBF (MSL 1) has unlimited shelf life without moisture bake requirements, reducing handling complexity and storage costs.

Q: Are both parts suitable for automated assembly?

A: The AR2003FV-13 is supplied in Tape & Reel format, optimized for pick-and-place equipment. The LT1681ESW#PBF is supplied in Tube format, requiring manual or specialized feeding systems for automated assembly.

Q: What regulatory certifications apply to both parts?

A: Both the AR2003FV-13 and LT1681ESW#PBF are ROHS3 compliant and REACH unaffected, confirming compliance with EU environmental directives and hazardous substance restrictions.