DMN5L06DMK-7 Equivalent & Substitute Parts

Part Overview

The DMN5L06DMK-7 is a dual N-channel MOSFET array manufactured by Diodes Incorporated, designed for surface mount applications in logic-level gate switching circuits. This device integrates two N-channel MOSFETs in a compact SOT-23-6 package, rated for 50V drain-to-source voltage and 305mA continuous drain current at 25°C.

The DMN5L06DMK-7 is classified as obsolete. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for applications currently utilizing this component.

Substiute Parts

DMN5L06DMK-7

Diodes IncorporatedIn Stock: 23171DMN5L06DMK-7 Datasheet

Current PartRFQ

FDC6301N

onsemiIn Stock: 76318FDC6301N Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the DMN5L06DMK-7 is evaluated based on the following critical parameters:

Configuration Match: Both the main part and substitute must feature a dual N-channel MOSFET configuration to maintain functional equivalence in dual-switch applications.

Voltage Rating: The substitute must support the drain-to-source voltage (Vdss) requirements of the original circuit. The DMN5L06DMK-7 is rated for 50V; substitutes with lower Vdss ratings are acceptable only if the application operates within the substitute's voltage specification.

Current Handling: The continuous drain current (Id) rating must meet or exceed the application's current requirements. The DMN5L06DMK-7 is rated for 305mA; substitutes with lower current ratings require circuit-level verification.

On-Resistance (Rds On): The on-resistance directly affects power dissipation and switching performance. Substitutes with higher Rds On values increase heat generation and may require thermal management adjustments.

Gate Threshold Voltage (Vgs(th)): Logic-level gate operation requires Vgs(th) compatibility with the driving circuit. The DMN5L06DMK-7 specifies 1V maximum; substitutes must maintain similar gate drive requirements.

Package Compatibility: Both parts use SOT-23-6 surface mount packaging, ensuring mechanical and electrical compatibility on printed circuit boards.

Compliance and Status: Active product status and ROHS3 compliance ensure long-term availability and regulatory alignment.

Parameter Comparison

Engineering Selection Recommendations

FDC6301N as Substitute for DMN5L06DMK-7

The FDC6301N from onsemi is identified as a manufacturer-recommended substitute. This substitution is valid under the following conditions:

Voltage Compatibility: The FDC6301N is rated for 25V Vdss, which is lower than the DMN5L06DMK-7's 50V rating. Substitution is permissible only in applications where the actual operating voltage does not exceed 25V. Circuits designed for 50V operation require verification that voltage stress remains within the substitute's specification.

Current Capacity: The FDC6301N supports 220mA continuous drain current, compared to the main part's 305mA. Applications requiring current levels above 220mA must be re-evaluated for thermal and electrical performance.

On-Resistance: The FDC6301N exhibits 4Ω on-resistance at 400mA and 4.5V gate-source voltage, versus 2Ω for the main part at 50mA and 5V. Higher on-resistance increases power dissipation; thermal management must be reassessed in power-sensitive applications.

Gate Drive: The FDC6301N threshold voltage is 1.5V maximum, slightly higher than the main part's 1V. Gate drive circuits must provide sufficient voltage margin to ensure reliable switching.

Product Status and Compliance: The FDC6301N is an active product with ROHS3 compliance, ensuring long-term availability and regulatory alignment. The obsolete status of the DMN5L06DMK-7 makes this substitution strategically important for supply chain continuity.

Package Compatibility: Both devices use SOT-23-6 surface mount packaging, enabling direct board-level substitution without layout modifications.

Frequently Asked Questions (FAQ)

Q: Can the FDC6301N directly replace the DMN5L06DMK-7 in all applications?

A: Direct substitution is not universal. The FDC6301N has lower voltage (25V vs. 50V) and current (220mA vs. 305mA) ratings. Substitution is valid only when the application operates within the FDC6301N's electrical specifications. Circuits designed for 50V operation or requiring current above 220mA require circuit-level analysis before substitution.

Q: What is the impact of the higher on-resistance in the FDC6301N?

A: The FDC6301N's 4Ω on-resistance (versus 2Ω for the main part) results in increased power dissipation during conduction. In applications with high switching frequency or continuous current flow, this may require thermal management adjustments, including increased PCB copper area, heat sinking, or derating of operating current.

Q: Are the packages physically compatible?

A: Yes. Both the DMN5L06DMK-7 and FDC6301N use SOT-23-6 surface mount packaging. The FDC6301N is available in SOT-23-6 Thin and TSOT-23-6 variants, both compatible with standard SOT-23-6 PCB footprints. No layout modifications are required for package substitution.

Q: What is the significance of the gate threshold voltage difference?

A: The FDC6301N specifies 1.5V maximum gate threshold voltage, compared to 1V for the main part. This 0.5V difference requires gate drive circuits to provide adequate voltage margin above the threshold to ensure reliable switching. Logic-level gate drivers must be verified to supply sufficient gate voltage for the substitute device.

Q: Why is the FDC6301N recommended despite lower electrical ratings?

A: The FDC6301N is an active product with established supply chain availability, whereas the DMN5L06DMK-7 is obsolete. For applications operating within the FDC6301N's specifications, this substitute ensures long-term component availability and regulatory compliance. Applications exceeding the substitute's ratings require alternative solutions.

Q: How does the lower input capacitance of the FDC6301N affect circuit performance?

A: The FDC6301N's input capacitance is 9.5pF at 10V, compared to 50pF for the main part at 25V. Lower input capacitance reduces gate charge requirements and may improve switching speed. This generally benefits high-frequency switching applications and reduces gate drive power consumption.

Q: Is thermal management different between these two devices?

A: The FDC6301N is rated for 700mW maximum power dissipation, compared to 400mW for the main part. However, the higher on-resistance of the FDC6301N may result in greater power dissipation in conduction-limited applications. Thermal analysis specific to the application's duty cycle and current profile is required to determine if additional heat management is necessary.

Q: Are there compliance or regulatory differences between these parts?

A: Both devices are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity. No regulatory or compliance barriers exist for substitution. Both parts are classified as EAR99 for export control purposes.