APR343KTR-G1 Equivalent & Substitute Parts

Part Overview

The APR343KTR-G1 is a Power Management IC (PMIC) manufactured by Diodes Incorporated, functioning as a Secondary-Side Controller with Synchronous Rectifier capability in SOT-25 packaging. This component is classified as Obsolete, making identification of functionally equivalent alternatives essential for ongoing system support, design updates, and procurement continuity. Substitute parts must maintain compatibility with the original electrical specifications and mounting requirements while offering active product status where possible.

Substiute Parts

APR343KTR-G1

Diodes IncorporatedIn Stock: 22103APR343KTR-G1 Datasheet

Current PartRFQ

APR348W6-7

Diodes IncorporatedIn Stock: 10673APR348W6-7 Datasheet

MFR RecommendedRFQ

ISPPAC-POWR605-01SN24I

Lattice Semiconductor CorporationIn Stock: 2607ISPPAC-POWR605-01SN24I Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the APR343KTR-G1 are qualified based on the following criteria:

Functional Compatibility: All substitutes must serve the Secondary-Side Controller and Synchronous Rectifier application role within power supply designs.

Electrical Parameters: Operating temperature range (-40°C ~ 85°C) and supply voltage compatibility are primary selection criteria. Substitute parts must operate within or exceed the original specification envelope.

Compliance & Certification: All candidates must maintain ROHS3 compliance and REACH Unaffected status to ensure regulatory alignment.

Mounting & Packaging: Surface mount technology is required. Package form factors (SOT-25, SOT-26, or equivalent multi-pin packages) must be compatible with existing PCB layouts or allow straightforward redesign.

Product Status: Active product status is preferred to ensure long-term availability and supply chain stability.

The two qualified substitutes—APR348W6-7 (Diodes Incorporated) and ISPPAC-POWR605-01SN24I (Lattice Semiconductor Corporation)—meet these criteria while offering enhanced specifications or alternative architectures suitable for secondary-side power management applications.

Parameter Comparison

Engineering Selection Recommendations

APR348W6-7 (Diodes Incorporated): This part represents the closest functional equivalent within the Diodes Incorporated product family. It maintains the same application focus (Secondary-Side Controller, Synchronous Rectifier) and operating temperature range. The part is Active status, ensuring supply chain continuity. The SOT-26 package requires PCB layout modification compared to the original SOT-25, but the pin count increase (6 pins vs. 5 pins) provides enhanced functionality. Supply voltage specification (28V) exceeds the original (0V ~ 6V), and current consumption increases to 170 µA. MSL rating improves to Level 1, reducing moisture-related handling risks. This substitute is recommended for designs where layout redesign is feasible and higher supply voltage tolerance is beneficial.

ISPPAC-POWR605-01SN24I (Lattice Semiconductor Corporation): This part offers an alternative architecture from a different manufacturer, classified as a Power Supply Monitor rather than a direct controller. It is Active status with ROHS3 and REACH compliance. The 24-QFNS package represents a significant form factor change from SOT-25, requiring substantial PCB redesign. Supply voltage range (2.64V ~ 3.96V) is narrower than the original specification. Current consumption (4.6 mA) is substantially higher. This substitute is suitable for applications where power supply monitoring functionality aligns with system requirements and PCB layout flexibility permits the larger package footprint.

Both substitutes maintain regulatory compliance (ROHS3, REACH Unaffected) and support the -40°C ~ 85°C operating temperature envelope. Selection depends on application-specific voltage requirements, available PCB real estate, and functional architecture preferences.

Frequently Asked Questions (FAQ)

Q: Can APR348W6-7 be used as a direct pin-for-pin replacement for APR343KTR-G1?

A: No. APR348W6-7 uses SOT-26 packaging (6 pins) versus the original SOT-25 (5 pins). PCB layout modification is required. Pin assignments must be verified against both datasheets before implementation.

Q: What is the primary difference between APR348W6-7 and ISPPAC-POWR605-01SN24I?

A: APR348W6-7 is a Secondary-Side Controller with Synchronous Rectifier function in a 6-pin SOT package. ISPPAC-POWR605-01SN24I is a Power Supply Monitor in a 24-pin QFNS package. The functional roles differ; selection depends on system architecture requirements.

Q: Are both substitutes compatible with the original -40°C ~ 85°C operating temperature range?

A: Yes. Both APR348W6-7 and ISPPAC-POWR605-01SN24I support the -40°C ~ 85°C operating temperature specification.

Q: Does the supply voltage difference affect substitution suitability?

A: Yes. APR343KTR-G1 operates at 0V ~ 6V; APR348W6-7 operates at 28V; ISPPAC-POWR605-01SN24I operates at 2.64V ~ 3.96V. System supply voltage must align with the selected substitute's specification. Voltage mismatch will result in component failure or malfunction.

Q: What does MSL Level 1 versus Level 3 mean for component handling?

A: MSL (Moisture Sensitivity Level) indicates moisture absorption risk during storage and handling. Level 1 (Unlimited) has no time restrictions; Level 3 (168 Hours) requires baking or controlled humidity storage after 168 hours of exposure. APR348W6-7 (Level 1) has less stringent handling requirements than APR343KTR-G1 (Level 3).

Q: Are all substitutes ROHS3 compliant?

A: Yes. APR343KTR-G1, APR348W6-7, and ISPPAC-POWR605-01SN24I are all ROHS3 compliant and REACH Unaffected, meeting current regulatory requirements.

Q: Which substitute offers the best long-term availability?

A: Both APR348W6-7 and ISPPAC-POWR605-01SN24I are Active status products, ensuring ongoing manufacturing and supply. The original APR343KTR-G1 is Obsolete, making substitution necessary for new designs or long-term support.