DMN3033LSD-13 Equivalent & Substitute Parts

Part Overview

The DMN3033LSD-13 is a dual N-channel MOSFET array manufactured by Diodes Incorporated, rated for 30V drain-to-source voltage with 6.9A continuous drain current. This surface mount component features logic level gate operation and is housed in an 8-SOIC package. The part is currently in active production status with ROHS3 compliance and unlimited moisture sensitivity rating.

Substitute parts are identified when equivalent electrical performance can be achieved within the specified parameter ranges while maintaining the same package form factor and mounting technology. The following parts meet the substitution criteria based on matching or exceeding the critical electrical specifications of the DMN3033LSD-13.

Key Parameters

Parameter	Value	Unit
Drain to Source Voltage (Vdss)	30	V
Continuous Drain Current (Id) @ 25°C	6.9	A
On-Resistance (Rds On) @ 6.9A, 10V	20	mOhm
Gate Threshold Voltage (Vgs(th)) @ 250µA	2.1	V
Gate Charge (Qg) @ 10V	13	nC
Input Capacitance (Ciss) @ 15V	725	pF
Maximum Power Dissipation	2	W
Operating Temperature Range	-55 to 150	°C
Configuration	2 N-Channel (Dual)	—
Package / Case	8-SOIC (0.154", 3.90mm Width)	—
Mounting Type	Surface Mount	—
FET Feature	Logic Level Gate	—

Substitute Part Grouping Explanation

Substitution of the DMN3033LSD-13 is determined by the following critical parameters:

Electrical Compatibility Criteria:

Drain-to-source voltage rating must equal or exceed 30V
Continuous drain current must equal or exceed 6.9A at 25°C
On-resistance (Rds On) must not exceed 20mOhm at rated current and 10V gate-source voltage
Gate threshold voltage must fall within acceptable logic level gate operation range
Operating temperature range must encompass -55°C to 150°C

Physical Compatibility Criteria:

Package must be 8-SOIC form factor with 0.154" (3.90mm) width
Mounting type must be surface mount
Configuration must be dual N-channel

Regulatory Compliance:

ROHS3 compliance required
Moisture sensitivity level 1 (unlimited)

Parts listed below meet all electrical parameters within acceptable tolerances while maintaining identical package specifications and regulatory compliance status.

Parameter Comparison

Parameter	DMN3033LSD-13	AO4818B	FDS8978	FDS8984	IRF7904TRPBF	SH8KA4TB	STS10DN3LH5	STS8DN3LLH5
Manufacturer	Diodes Inc.	Alpha & Omega	onsemi	onsemi	Infineon	Rohm	STMicroelectronics	STMicroelectronics
Vdss (V)	30	30	30	30	30	30	30	30
Id @ 25°C (A)	6.9	8	7.5	7	7.6 / 11	9	10	10
Rds On (mOhm)	20 @ 6.9A, 10V	19 @ 8A, 10V	18 @ 7.5A, 10V	23 @ 7A, 10V	16.2 @ 7.6A, 10V	21.4 @ 9A, 10V	21 @ 5A, 10V	19 @ 5A, 10V
Vgs(th) (V)	2.1 @ 250µA	2.4 @ 250µA	2.5 @ 250µA	2.5 @ 250µA	2.25 @ 25µA	2.5 @ 1mA	1 @ 250µA	1 @ 250µA
Qg (nC)	13 @ 10V	18 @ 10V	26 @ 10V	13 @ 10V	11 @ 4.5V	15.5 @ 10V	4.6 @ 5V	5.4 @ 4.5V
Ciss (pF)	725 @ 15V	888 @ 15V	1270 @ 15V	635 @ 15V	910 @ 15V	640 @ 15V	475 @ 25V	724 @ 25V
Power Max (W)	2	2	1.6	1.6	1.4 / 2	3	2.5	2.7
Operating Temp (°C)	-55 to 150	-55 to 150	-55 to 150	-55 to 150	-55 to 150	-55 to 150	-55 to 150	-55 to 150
Package	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC
Configuration	2 N-Ch (Dual)	2 N-Ch (Dual)	2 N-Ch (Dual)	2 N-Ch (Dual)	2 N-Ch (Half Bridge)	2 N-Ch (Dual)	2 N-Ch (Dual)	2 N-Ch (Dual)
Product Status	Active	Active	Obsolete	Active	Not For New Designs	Not For New Designs	Not For New Designs	Active
ROHS3 Compliant	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes

Engineering Selection Recommendations

Primary Substitute (Recommended for New Designs):

AO4818B (Alpha & Omega Semiconductor Inc.) is the preferred substitute for the DMN3033LSD-13. This part maintains active production status, exceeds the minimum drain current specification (8A vs. 6.9A), and delivers superior on-resistance performance (19mOhm vs. 20mOhm). The AO4818B is ROHS3 compliant with identical operating temperature range and package specifications. Inventory availability is confirmed at 6,125 units.

STS8DN3LLH5 (STMicroelectronics) is an alternative substitute with active product status. This part provides higher drain current capability (10A) and lower on-resistance (19mOhm @ 5A, 10V). The STripFET™ V series technology delivers enhanced performance characteristics. Inventory availability is confirmed at 15,265 units.

Secondary Substitutes (Limited Application):

FDS8984 (onsemi) is an active product offering 7A continuous drain current with 23mOhm on-resistance. This part meets minimum electrical requirements but operates at the upper tolerance limit for on-resistance. The PowerTrench® series provides 1.6W maximum power dissipation. Inventory availability is confirmed at 27,800 units.

Parts Not Recommended for New Designs:

FDS8978 (onsemi) carries obsolete product status and should not be selected for new circuit designs despite meeting electrical specifications.

IRF7904TRPBF (Infineon) is marked "Not For New Designs" and carries HEXFET® technology. While electrical parameters are acceptable, the product lifecycle status restricts its use in new applications.

SH8KA4TB (Rohm Semiconductor) and STS10DN3LH5 (STMicroelectronics) are both marked "Not For New Designs" and should be avoided for new circuit implementations.

Frequently Asked Questions (FAQ)

Q: Can the AO4818B directly replace the DMN3033LSD-13 without circuit modification?

A: Yes. The AO4818B operates within identical voltage and temperature specifications, maintains the same 8-SOIC package footprint, and exceeds the minimum drain current and on-resistance requirements. No circuit modifications are required for direct substitution.

Q: What is the difference between the DMN3033LSD-13 and STS8DN3LLH5 in terms of performance?

A: Both parts share identical 30V voltage rating and -55°C to 150°C operating range. The STS8DN3LLH5 provides higher drain current capability (10A vs. 6.9A) and lower on-resistance (19mOhm vs. 20mOhm). The STS8DN3LLH5 is suitable for applications requiring higher current handling or lower power dissipation.

Q: Why is FDS8978 listed as a substitute if it is obsolete?

A: FDS8978 is included in the comparison table for reference purposes only. Its obsolete status makes it unsuitable for new circuit designs. Existing inventory may be available through secondary channels, but primary substitutes with active production status are strongly preferred.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All substitute parts listed in this document carry ROHS3 compliance certification and unlimited moisture sensitivity level (MSL 1), matching the regulatory status of the DMN3033LSD-13.

Q: What is the significance of the "Not For New Designs" product status?

A: Parts marked "Not For New Designs" are in end-of-life phases or have been superseded by newer technology. While existing inventory may be available, these parts should not be selected for new circuit implementations. Use active status parts (AO4818B or STS8DN3LLH5) for new designs.

Q: Can I use IRF7904TRPBF as a substitute despite its "Not For New Designs" status?

A: The IRF7904TRPBF meets all electrical specifications and package requirements. However, its product lifecycle status restricts recommendation for new applications. If legacy system maintenance requires this part, it remains electrically compatible with the DMN3033LSD-13.

Q: How do gate charge differences affect circuit performance?

A: Gate charge (Qg) values range from 4.6nC to 26nC across substitute options. Lower gate charge reduces driver power requirements and switching losses. The DMN3033LSD-13 specifies 13nC @ 10V. Parts with lower Qg (STS10DN3LH5 at 4.6nC, STS8DN3LLH5 at 5.4nC) offer improved switching efficiency, while parts with higher Qg require proportionally more driver current.

Q: What packaging considerations apply to these substitutes?

A: All substitute parts use the 8-SOIC package with 0.154" (3.90mm) width, ensuring identical PCB footprint compatibility. Surface mount assembly processes remain unchanged. Tape & Reel and Cut Tape packaging options are available across different manufacturers.

Q: Is on-resistance (Rds On) the primary factor in selecting a substitute?

A: On-resistance is a critical parameter affecting power dissipation and thermal performance. The DMN3033LSD-13 specifies 20mOhm @ 6.9A, 10V. Substitute parts with equal or lower on-resistance (AO4818B at 19mOhm, STS8DN3LLH5 at 19mOhm) provide equivalent or superior thermal characteristics. Parts exceeding 20mOhm (FDS8984 at 23mOhm) operate at reduced efficiency margins.

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