DMG4932LSD-13 Equivalent & Substitute Parts

Part Overview

The DMG4932LSD-13 is a dual N-channel MOSFET array manufactured by Diodes Incorporated, rated for 30V drain-to-source voltage and 9.5A continuous drain current. This component is classified as obsolete, necessitating identification of equivalent alternatives for ongoing production and maintenance applications. Substitute parts must maintain functional compatibility across voltage ratings, current handling, thermal performance, and surface mount packaging specifications.

Substiute Parts

DMG4932LSD-13

Diodes IncorporatedIn Stock: 2298DMG4932LSD-13 Datasheet

Current PartRFQ

AO4832

Alpha & Omega Semiconductor Inc.In Stock: 24725AO4832 Datasheet

MFR RecommendedRFQ

IRF7904TRPBF

Infineon TechnologiesIn Stock: 2970IRF7904TRPBF Datasheet

MFR RecommendedRFQ

STL8DN6LF3

STMicroelectronicsIn Stock: 9106STL8DN6LF3 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the DMG4932LSD-13 is determined by the following critical parameters:

Voltage Rating Compatibility: All substitute parts must maintain a minimum Vdss rating of 30V to ensure safe operation within the original design envelope. Parts with higher voltage ratings (60V) remain functionally compatible for applications not requiring voltage-specific optimization.

Current Handling Capacity: The continuous drain current (Id) must equal or exceed 9.5A at 25°C. Substitute parts with equal or higher current ratings (10A, 11A, 20A) provide direct functional replacement without derating.

On-State Resistance (Rds On): This parameter directly affects power dissipation and thermal performance. Lower Rds On values indicate improved efficiency and reduced heat generation, making parts with 13 mOhm or lower ratings suitable replacements.

Package and Mounting: All substitute parts must use surface mount technology with compatible 8-pin SOIC or equivalent footprints to ensure PCB assembly compatibility.

Compliance and Status: Active product status and ROHS3 compliance ensure long-term availability and regulatory conformance for new designs and production continuity.

Parameter Comparison

Engineering Selection Recommendations

AO4832 (Alpha & Omega Semiconductor Inc.): This part provides the closest functional match to the DMG4932LSD-13. It maintains identical 30V voltage rating and dual N-channel configuration with 10A continuous drain current, exceeding the original 9.5A specification. The AO4832 features improved on-state resistance (13 mOhm versus 15 mOhm) and significantly reduced gate charge (17 nC versus 42 nC), resulting in lower switching losses and improved thermal performance. Active product status ensures long-term availability and supply chain continuity. ROHS3 compliance and identical operating temperature range (-55°C to 150°C) provide direct design compatibility. The 8-SOIC package maintains PCB footprint compatibility.

IRF7904TRPBF (Infineon Technologies): This part meets the 30V voltage requirement with dual N-channel configuration. The device offers 7.6A or 11A continuous drain current ratings, with the 11A option exceeding the original specification. Reduced gate charge (11 nC) and input capacitance (910 pF) provide switching efficiency advantages. However, this part carries "Not For New Designs" status, limiting its suitability for ongoing production. The half-bridge configuration differs from the dual configuration of the original part, requiring circuit topology verification. ROHS3 compliance and identical operating temperature range support functional compatibility where design constraints permit.

STL8DN6LF3 (STMicroelectronics): This part provides the highest performance margin with 60V voltage rating and 20A continuous drain current, substantially exceeding original specifications. The STripFET™ III series technology delivers superior power handling (65W maximum) and extended operating temperature range (-55°C to 175°C). Active product status and automotive-grade qualification (AEC-Q101) ensure production availability and reliability certification. The PowerFlat™ (5x6) package differs from the original 8-SOIC footprint, requiring PCB redesign. The elevated voltage rating and current capacity make this part suitable for applications requiring enhanced performance margins or thermal headroom, though package migration introduces design complexity.

Frequently Asked Questions (FAQ)

Q: Can the AO4832 directly replace the DMG4932LSD-13 without circuit modifications?

A: Yes. The AO4832 maintains identical voltage rating (30V), dual N-channel configuration, and 8-SOIC package footprint. The 10A continuous drain current exceeds the original 9.5A specification. Improved electrical characteristics (lower Rds On and gate charge) provide performance enhancement without requiring design changes.

Q: What is the primary limitation of the IRF7904TRPBF as a substitute?

A: The IRF7904TRPBF carries "Not For New Designs" status, indicating Infineon has discontinued active development and support for this part. While electrically compatible at 30V operation, this status restricts its use to legacy system maintenance only. The half-bridge configuration also differs from the original dual configuration, requiring circuit topology verification.

Q: Why does the STL8DN6LF3 have a different package than the original part?

A: The STL8DN6LF3 uses PowerFlat™ (5x6) packaging instead of the 8-SOIC format of the DMG4932LSD-13. This package change reflects STMicroelectronics' design approach for higher power applications (65W versus 1.19W). PCB layout and footprint redesign are required for implementation, though the part provides superior thermal and current handling capabilities.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All three substitute parts (AO4832, IRF7904TRPBF, and STL8DN6LF3) carry ROHS3 compliance certification, ensuring regulatory conformance for both new production and replacement applications.

Q: What is the impact of reduced gate charge on circuit performance?

A: Lower gate charge (Qg) reduces the energy required to switch the MOSFET on and off, resulting in decreased switching losses and improved efficiency. The AO4832 (17 nC) and IRF7904TRPBF (11 nC) both feature significantly reduced gate charge compared to the original DMG4932LSD-13 (42 nC), enabling faster switching speeds and lower power dissipation in driver circuits.

Q: Can the STL8DN6LF3 be used in applications where the original 30V rating is sufficient?

A: Yes. The STL8DN6LF3 60V rating provides overvoltage margin for 30V applications without functional degradation. However, the PowerFlat™ package requires PCB redesign. The elevated voltage rating and current capacity (20A) make this part suitable only for applications where the design benefits from enhanced performance margins justify the layout migration effort.

Q: What compliance certifications apply to these substitute parts?

A: All substitute parts maintain ROHS3 compliance and REACH unaffected status. The STL8DN6LF3 additionally carries automotive-grade qualification (AEC-Q101), suitable for automotive and industrial applications requiring enhanced reliability certification.