DMN2991UTQ-13 Equivalent & Substitute Parts

Part Overview

The DMN2991UTQ-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 (Vdss) of 20 V with a continuous drain current rating of 300 mA and maximum power dissipation of 280 mW. The part is qualified to AEC-Q101 automotive standards and carries Active product status. Substitute parts are identified based on identical electrical performance parameters and package compatibility, enabling direct replacement in circuit designs where the primary part becomes unavailable or inventory constraints require alternative sourcing.

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	SOT-523	—
Mounting Type	Surface Mount	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution of the DMN2991UTQ-13 is determined by equivalence across all critical electrical and mechanical parameters. The substitute parts—DMN2991UT-13, DMN2991UT-7, and DMN2991UTQ-7—share identical specifications in the following key areas:

Drain-source voltage (Vdss): 20 V
Continuous drain current (Id): 300 mA @ 25°C
On-state resistance (Rds On): 3 Ω @ 100 mA, 4.5 V
Gate threshold voltage (Vgs(th)): 1 V @ 250 µA
Gate charge (Qg): 0.35 nC @ 4.5 V
Input capacitance (Ciss): 21.5 pF @ 15 V
Power dissipation: 280 mW
Operating temperature range: −55°C to 150°C
Package and mounting: SOT-523, Surface Mount

All substitute parts maintain ROHS3 compliance and REACH unaffected status. The primary distinction between substitute variants lies in packaging designation (UT versus UTQ suffix) and moisture sensitivity level (MSL) classification, which do not affect electrical performance or functional interchangeability in circuit applications.

Parameter Comparison

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

Engineering Selection Recommendations

All four parts—DMN2991UTQ-13, DMN2991UT-13, DMN2991UT-7, and DMN2991UTQ-7—are classified as Active products and maintain full compliance with ROHS3 and REACH regulations. The DMN2991UTQ-13 and DMN2991UTQ-7 variants carry AEC-Q101 automotive qualification, making them suitable for applications requiring automotive-grade reliability standards. The DMN2991UT-13 and DMN2991UT-7 variants are functionally equivalent but lack explicit automotive qualification designation in the provided specifications.

Selection between these parts should be based on:

Automotive qualification requirement: Choose DMN2991UTQ-13 or DMN2991UTQ-7 if AEC-Q101 compliance is mandatory.
Inventory availability: DMN2991UT-7 maintains the highest stock level (426,400 units), followed by DMN2991UT-13 (654 units), DMN2991UTQ-7 (746 units), and DMN2991UTQ-13 (970 units).
Packaging designation: UT and UTQ suffixes indicate different packaging specifications; verify tape and reel configuration compatibility with assembly equipment.

All parts deliver identical electrical performance and are pin-compatible in SOT-523 surface mount applications.

Frequently Asked Questions (FAQ)

Q: Can DMN2991UT-7 be used as a direct replacement for DMN2991UTQ-13?

A: Yes. Both parts share identical electrical specifications, including Vdss (20 V), Id (300 mA), Rds On (3 Ω), and all other critical parameters. Both are packaged in SOT-523 and mounted as surface mount devices. The primary difference is that DMN2991UTQ-13 carries AEC-Q101 automotive qualification while DMN2991UT-7 does not. If automotive qualification is not required, substitution is electrically valid.

Q: What is the difference between the UT and UTQ packaging designations?

A: The UT and UTQ suffixes denote different packaging specifications within the tape and reel delivery format. Both are surface mount SOT-523 packages. Verify the specific tape and reel configuration (pitch, pocket size, and leader length) required by your assembly equipment before substituting between UT and UTQ variants.

Q: Are all substitute parts RoHS and REACH compliant?

A: Yes. All four parts—DMN2991UTQ-13, DMN2991UT-13, DMN2991UT-7, and DMN2991UTQ-7—are ROHS3 compliant and REACH unaffected.

Q: Which substitute part has the best availability?

A: DMN2991UT-7 has the highest inventory level at 426,400 units in stock. This part is suitable for applications where automotive qualification is not required.

Q: Do these parts have different moisture sensitivity levels?

A: DMN2991UT-7 and DMN2991UTQ-7 are specified with MSL 1 (Unlimited). DMN2991UTQ-13 and DMN2991UT-13 do not have MSL specifications provided in the data. Consult component datasheets for detailed moisture handling requirements during storage and assembly.

Q: Can I substitute these parts in automotive applications?

A: For applications requiring AEC-Q101 automotive qualification, use DMN2991UTQ-13 or DMN2991UTQ-7. Both parts carry explicit automotive qualification. DMN2991UT-13 and DMN2991UT-7 are not specified with automotive qualification and should not be used in applications where this certification is mandatory.

Q: Are the electrical characteristics identical across all four parts?

A: Yes. All four parts deliver identical electrical performance: 20 V Vdss, 300 mA continuous drain current, 3 Ω Rds On, 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.

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