DMN4036LK3Q-13 Equivalent & Substitute Parts

Part Overview

The DMN4036LK3Q-13 is an N-Channel MOSFET manufactured by Diodes Incorporated, rated for 40V drain-to-source voltage with 12.2A continuous drain current at 25°C. This device is packaged in TO-252-3 (DPAK) surface mount configuration and is qualified to AEC-Q101 automotive standards. The part is currently in active production status with 839 units in stock.

Substitute parts are identified when equivalent electrical performance and mechanical compatibility can be maintained within the specified parameter ranges. Alternative devices may be required due to supply chain considerations, design optimization, or application-specific performance requirements while maintaining functional equivalence in the target circuit.

Key Parameters

Parameter	Value	Unit
Drain-to-Source Voltage (Vdss)	40	V
Continuous Drain Current (Id) @ 25°C	12.2	A (Ta)
On-Resistance (Rds On Max) @ 12A, 10V	36	mOhm
Gate Threshold Voltage (Vgs(th)) @ 250µA	3	V
Gate Charge (Qg) @ 10V	9.2	nC
Power Dissipation (Max)	2.12	W (Ta)
Operating Temperature Range	-55 to 150	°C (TJ)
Package Type	TO-252-3 (DPAK)	Surface Mount
Qualification Standard	AEC-Q101	Automotive

Substitute Part Grouping Explanation

Substitution eligibility for the DMN4036LK3Q-13 is determined by the following critical parameters:

Electrical Compatibility Criteria:

Drain-to-Source Voltage (Vdss) must equal or exceed 40V
Continuous Drain Current (Id) must meet or exceed 12.2A at rated temperature
On-Resistance (Rds On) must not exceed the maximum specified value to ensure thermal performance equivalence
Gate Threshold Voltage (Vgs(th)) must fall within acceptable switching characteristics
Operating temperature range must encompass -55°C to 150°C

Mechanical Compatibility Criteria:

Package type must be TO-252-3 (DPAK) or directly compatible surface mount variant
Mounting configuration must be surface mount
Pin configuration must maintain functional equivalence

Compliance Criteria:

RoHS3 compliance required
Moisture Sensitivity Level (MSL) of 1 or better
REACH unaffected status

The RFD16N05LSM9A from onsemi meets these substitution criteria with enhanced electrical ratings while maintaining package compatibility and compliance requirements.

Parameter Comparison

Parameter	DMN4036LK3Q-13 (Diodes Inc.)	RFD16N05LSM9A (onsemi)	Unit
FET Type	N-Channel	N-Channel	—
Technology	MOSFET (Metal Oxide)	MOSFET (Metal Oxide)	—
Drain-to-Source Voltage (Vdss)	40	50	V
Continuous Drain Current (Id) @ 25°C	12.2	16	A
On-Resistance (Rds On Max)	36 @ 12A, 10V	47 @ 16A, 5V	mOhm
Gate Threshold Voltage (Vgs(th))	3 @ 250µA	2 @ 250mA	V
Gate Charge (Qg) @ 10V	9.2	80	nC
Power Dissipation (Max)	2.12 (Ta)	60 (Tc)	W
Operating Temperature Range	-55 to 150	-55 to 150	°C (TJ)
Package Type	TO-252-3 (DPAK)	TO-252AA (DPAK)	Surface Mount
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	—
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	—
REACH Status	REACH Unaffected	REACH Unaffected	—

Engineering Selection Recommendations

DMN4036LK3Q-13 (Primary Part): The DMN4036LK3Q-13 is the specified component with active production status and AEC-Q101 automotive qualification. This part is suitable for applications requiring 40V rated operation with 12.2A continuous drain current. The device maintains RoHS3 compliance and unlimited moisture sensitivity rating. Selection of this part is appropriate when the original design specification and automotive qualification requirements are mandatory.

RFD16N05LSM9A (Substitute Part): The RFD16N05LSM9A from onsemi is an active production substitute that provides enhanced electrical performance with 50V Vdss rating and 16A continuous drain current capability. This device maintains TO-252-3 package compatibility and surface mount configuration. Both parts share identical operating temperature range (-55°C to 150°C), RoHS3 compliance status, and unlimited moisture sensitivity rating. The substitute part offers higher voltage and current ratings, making it suitable for applications where design margin or performance headroom is beneficial. The substitute part is available in higher inventory quantity (9030 units).

Selection between these parts should be based on application voltage requirements, current demands, and supply chain availability. Both parts satisfy the core electrical and mechanical compatibility criteria for direct substitution in TO-252-3 surface mount applications.

Frequently Asked Questions (FAQ)

Q: Can the RFD16N05LSM9A directly replace the DMN4036LK3Q-13 in existing designs?

A: Yes, the RFD16N05LSM9A is mechanically and electrically compatible for direct substitution. Both devices use TO-252-3 (DPAK) surface mount packaging with identical pin configuration. The substitute part's higher voltage rating (50V vs. 40V) and increased current capability (16A vs. 12.2A) provide design margin while maintaining functional equivalence in circuits designed for the original part.

Q: What are the key differences in electrical performance between these two parts?

A: The RFD16N05LSM9A provides higher Vdss (50V vs. 40V) and higher continuous drain current (16A vs. 12.2A). The on-resistance specification differs due to different measurement conditions (47mOhm @ 16A, 5V for the substitute vs. 36mOhm @ 12A, 10V for the original). Gate charge is higher in the substitute part (80nC vs. 9.2nC @ 10V), which may affect switching speed in gate-drive-limited applications. Power dissipation rating is significantly higher for the substitute (60W vs. 2.12W), reflecting different measurement temperature bases (Tc vs. Ta).

Q: Are both parts suitable for automotive applications?

A: The DMN4036LK3Q-13 carries AEC-Q101 automotive qualification. The RFD16N05LSM9A does not list AEC-Q101 qualification in the provided specifications. For applications requiring explicit automotive qualification, the DMN4036LK3Q-13 is the specified choice. For non-qualified automotive or general industrial applications, the RFD16N05LSM9A is suitable based on its active production status and compliance certifications.

Q: What is the impact of different gate charge specifications on circuit design?

A: The RFD16N05LSM9A has significantly higher gate charge (80nC vs. 9.2nC @ 10V). This affects gate drive circuit design, particularly in high-frequency switching applications. Higher gate charge requires more current from the gate driver to achieve the same switching speed. Applications with current-limited gate drive circuits may experience slower switching transitions with the substitute part, potentially affecting efficiency in switching power supply designs.

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

A: Both parts are RoHS3 compliant, REACH unaffected, and carry unlimited moisture sensitivity rating (MSL 1). Both use identical ECCN (EAR99) and HTSUS classifications. The primary regulatory difference is the AEC-Q101 automotive qualification present only on the DMN4036LK3Q-13. For applications outside automotive qualification requirements, both parts meet identical compliance standards.

Q: What inventory considerations should influence part selection?

A: The DMN4036LK3Q-13 has 839 units in stock, while the RFD16N05LSM9A has 9030 units available. For applications with extended lead time requirements or high-volume production, the substitute part's higher inventory availability may provide supply chain advantages. For single-unit or low-volume applications, both parts are readily available.

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