DMN2991UT-13 Equivalent & Substitute Parts

Part Overview

The DMN2991UT-13 is an N-Channel MOSFET manufactured by Diodes Incorporated, designed for surface mount applications in the SOT-523 package. This device operates at a drain-source voltage rating of 20 V with a continuous drain current of 300 mA and maximum power dissipation of 280 mW. The part is classified as Active product status and is RoHS3 compliant. Equivalent and substitute parts are identified to support design flexibility, supply chain continuity, and application-specific requirements such as automotive qualification or moisture sensitivity specifications.

Key Parameters

Parameter	Value	Unit
FET Type	N-Channel	—
Technology	MOSFET (Metal Oxide)	—
Drain to Source Voltage (Vdss)	20	V
Continuous Drain Current (Id) @ 25°C	300	mA
Rds On (Max) @ 100 mA, 4.5 V	3	Ω
Gate Threshold Voltage (Vgs(th)) @ 250 µA	1	V
Gate Charge (Qg) @ 4.5 V	0.35	nC
Input Capacitance (Ciss) @ 15 V	21.5	pF
Power Dissipation (Max)	280	mW
Operating Temperature Range	−55 to 150	°C
Package Type	SOT-523	—
Mounting Type	Surface Mount	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution of the DMN2991UT-13 is determined by electrical and mechanical parameter equivalence across the DMN2991 base product family. All substitute parts maintain identical specifications for drain-source voltage (20 V), continuous drain current (300 mA), on-resistance (3 Ω @ 100 mA, 4.5 V), gate threshold voltage (1 V @ 250 µA), gate charge (0.35 nC @ 4.5 V), input capacitance (21.5 pF @ 15 V), power dissipation (280 mW), and operating temperature range (−55°C to 150°C). All substitute parts are packaged in SOT-523 surface mount configuration and are RoHS3 compliant. Substitution differences are limited to packaging tape reel designations (UT versus UTQ suffix) and automotive qualification status (AEC-Q101 for UTQ variant). These differences do not affect electrical performance or functional compatibility in equivalent circuit applications.

Parameter Comparison

Parameter	DMN2991UT-13	DMN2991UT-7	DMN2991UTQ-7
Manufacturer	Diodes Incorporated	Diodes Incorporated	Diodes Incorporated
FET Type	N-Channel	N-Channel	N-Channel
Technology	MOSFET (Metal Oxide)	MOSFET (Metal Oxide)	MOSFET (Metal Oxide)
Vdss	20 V	20 V	20 V
Id @ 25°C	300 mA	300 mA	300 mA
Rds On (Max) @ 100 mA, 4.5 V	3 Ω	3 Ω	3 Ω
Vgs(th) @ 250 µA	1 V	1 V	1 V
Qg @ 4.5 V	0.35 nC	0.35 nC	0.35 nC
Ciss @ 15 V	21.5 pF	21.5 pF	21.5 pF
Power Dissipation (Max)	280 mW	280 mW	280 mW
Operating Temperature	−55 to 150 °C	−55 to 150 °C	−55 to 150 °C
Package	SOT-523	SOT-523	SOT-523
Mounting Type	Surface Mount	Surface Mount	Surface Mount
Packaging	Tape & Reel (TR)	Tape & Reel (TR)	Tape & Reel (TR)
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Active	Active	Active
Automotive Qualification	—	—	AEC-Q101
Moisture Sensitivity Level	—	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

All three parts—DMN2991UT-13, DMN2991UT-7, and DMN2991UTQ-7—are electrically and mechanically equivalent and suitable for direct substitution in applications requiring an N-Channel MOSFET with 20 V Vdss rating and 300 mA continuous drain current in SOT-523 surface mount packaging.

DMN2991UT-13 is the reference part with Active product status and standard commercial-grade qualification. This part is appropriate for general-purpose applications where automotive certification is not required.

DMN2991UT-7 is an equivalent commercial-grade variant with identical electrical specifications and Active product status. This part includes specified moisture sensitivity level (MSL 1, Unlimited) and offers higher inventory availability (426,400 units in stock). Selection of this part is appropriate when supply chain continuity or higher stock levels are prioritized.

DMN2991UTQ-7 is an automotive-qualified variant carrying AEC-Q101 certification and MSL 1 (Unlimited) moisture sensitivity rating. This part is required for applications subject to automotive industry standards or where AEC-Q101 qualification is a design requirement. Product status is Active.

Selection between these parts depends on application requirements: commercial applications may use DMN2991UT-13 or DMN2991UT-7; automotive applications must use DMN2991UTQ-7.

Frequently Asked Questions (FAQ)

Q: Can DMN2991UT-7 be used as a direct replacement for DMN2991UT-13?

A: Yes. Both parts are electrically and mechanically equivalent, with identical drain-source voltage (20 V), continuous drain current (300 mA), on-resistance (3 Ω), gate threshold voltage (1 V), gate charge (0.35 nC), input capacitance (21.5 pF), power dissipation (280 mW), and operating temperature range (−55°C to 150°C). Both are packaged in SOT-523 surface mount configuration and are RoHS3 compliant. The primary difference is packaging designation and inventory availability.

Q: What is the difference between DMN2991UT-7 and DMN2991UTQ-7?

A: The electrical and mechanical specifications are identical. The primary difference is that DMN2991UTQ-7 carries AEC-Q101 automotive qualification certification, making it suitable for automotive applications. Both parts have MSL 1 (Unlimited) moisture sensitivity rating. Selection depends on whether automotive qualification is required.

Q: Are all three parts suitable for the same PCB layout and footprint?

A: Yes. All three parts use the SOT-523 surface mount package and are mechanically equivalent. PCB layout, footprint, and assembly processes are identical across all three variants.

Q: Which part should be selected for an automotive application?

A: DMN2991UTQ-7 must be selected for automotive applications, as it carries AEC-Q101 qualification. DMN2991UT-13 and DMN2991UT-7 are commercial-grade parts and do not include automotive certification.

Q: Is there a difference in electrical performance between these parts?

A: No. All three parts have identical electrical specifications: 20 V Vdss, 300 mA continuous drain current, 3 Ω on-resistance at 100 mA and 4.5 V gate-source voltage, 1 V gate threshold voltage, 0.35 nC gate charge, 21.5 pF input capacitance, 280 mW power dissipation, and −55°C to 150°C operating temperature range.

Q: What does the "UT" versus "UTQ" suffix indicate?

A: The suffix indicates packaging and qualification designation within the DMN2991 product family. "UT" designates standard commercial-grade tape and reel packaging. "UTQ" designates automotive-qualified tape and reel packaging with AEC-Q101 certification. Electrical performance is identical.

Q: Can DMN2991UT-13 be substituted with DMN2991UTQ-7 in a non-automotive application?

A: Yes. DMN2991UTQ-7 is electrically and mechanically equivalent and can be used in any application where DMN2991UT-13 is specified. The automotive qualification does not restrict use in commercial applications.

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