AP4306AKTR-AG1 Equivalent & Substitute Parts

Part Overview

The AP4306AKTR-AG1 is an SMPS Start-Up PMIC manufactured by Diodes Incorporated in SOT-23-6 surface mount packaging. This integrated circuit functions as a start-up controller for switched-mode power supplies, operating across a supply voltage range of 2.5V to 18V with a maximum supply current of 600µA. The device is classified as Last Time Buy, indicating discontinued production status. Identifying equivalent and substitute parts is essential for design continuity, inventory management, and long-term product support when original stock becomes unavailable.

Substiute Parts

AP4306AKTR-AG1

Diodes IncorporatedIn Stock: 19959AP4306AKTR-AG1 Datasheet

Current PartRFQ

AP4306AKTR-G1

Diodes IncorporatedIn Stock: 23918AP4306AKTR-G1 Datasheet

MFR RecommendedRFQ

HV9803LG-G

Microchip TechnologyIn Stock: 27911HV9803LG-G Datasheet

SimilarRFQ

R2A20135SP#W5

Renesas Electronics CorporationIn Stock: 8663R2A20135SP#W5 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the AP4306AKTR-AG1 is determined by the following critical parameters:

• Voltage Supply Range: 2.5V ~ 18V minimum compatibility required
• Package Type: SOT-23-6 surface mount configuration
• Current Supply Specification: Maximum 600µA operational current
• Operating Temperature Range: -40°C ~ 105°C minimum coverage
• Functional Category: Power Management PMIC for SMPS applications

The identified substitute parts are grouped based on their ability to meet or exceed these electrical and mechanical specifications within the same or compatible packaging standards.

Parameter Comparison

Engineering Selection Recommendations

AP4306AKTR-G1 (Diodes Incorporated): This part maintains identical voltage supply range (2.5V ~ 18V), matching operating temperature range (-40°C ~ 105°C), and identical SOT-23-6 packaging. Supply current is reduced to 500µA, which is within acceptable operational margins. Product status is Active, ensuring continued availability and support. RoHS3 compliance is confirmed. This represents the closest functional equivalent with the same manufacturer and package footprint.

HV9803LG-G (Microchip Technology): This LED driver IC operates within a reduced voltage supply range (7V ~ 13.2V), which does not fully encompass the original 2.5V minimum specification. Package format differs (8-SOIC versus SOT-23-6). Operating temperature range extends to 125°C, exceeding original specifications. Product status is Active with RoHS3 compliance. This part is suitable only for applications where the minimum 7V supply voltage requirement is acceptable and package compatibility can be accommodated.

R2A20135SP#W5 (Renesas Electronics Corporation): This LED driver IC operates within an extended voltage supply range (8.5V ~ 24V), exceeding the original maximum but not meeting the 2.5V minimum requirement. Package format is 8-SOIC, differing from SOT-23-6. Operating temperature range extends to 150°C. Product status is Active with RoHS3 compliance. This part is applicable only for applications with supply voltages above 8.5V and where package substitution is feasible.

Frequently Asked Questions (FAQ)

Q: Can AP4306AKTR-G1 be used as a direct replacement for AP4306AKTR-AG1?

A: AP4306AKTR-G1 is the closest equivalent, sharing identical voltage supply range (2.5V ~ 18V), operating temperature range (-40°C ~ 105°C), and SOT-23-6 packaging. The supply current specification is reduced from 600µA to 500µA, which is operationally acceptable for most SMPS start-up applications. Both parts are manufactured by Diodes Incorporated. Direct PCB substitution is feasible without layout modifications.

Q: What are the voltage compatibility limitations for HV9803LG-G?

A: HV9803LG-G operates with a minimum supply voltage of 7V, which does not satisfy the original part's 2.5V minimum specification. This part is suitable only for applications where the power supply voltage remains above 7V throughout operation. The maximum supply voltage of 13.2V is also lower than the original 18V specification.

Q: Why does R2A20135SP#W5 have a different package type?

A: R2A20135SP#W5 is packaged in 8-SOIC format rather than SOT-23-6. While both are surface mount packages, they have different pin counts, footprints, and PCB layout requirements. Package substitution requires PCB redesign and re-qualification. This part is recommended only when voltage supply range (8.5V ~ 24V) and extended temperature range (-40°C ~ 150°C) requirements justify the layout modification effort.

Q: Are all substitute parts RoHS3 compliant?

A: AP4306AKTR-G1, HV9803LG-G, and R2A20135SP#W5 are all confirmed RoHS3 compliant. The original AP4306AKTR-AG1 RoHS status is not specified in available documentation.

Q: Which substitute part has the best inventory availability?

A: HV9803LG-G has the highest inventory level at 27,900 pieces. AP4306AKTR-G1 has 23,840 pieces available. R2A20135SP#W5 has 8,596 pieces in stock. Inventory levels should be verified with suppliers for current availability.