DMN31D6UT-13 Equivalent & Substitute Parts

Part Overview

The DMN31D6UT-13 is an N-Channel MOSFET manufactured by Diodes Incorporated, rated for 30V drain-to-source voltage with 350mA continuous drain current at 25°C. This surface mount device in SOT-523 packaging is designed for low-power switching applications requiring compact form factors and efficient thermal performance up to 320mW power dissipation. The part maintains Active product status with full RoHS3 compliance and unlimited moisture sensitivity rating (MSL 1). Substitute parts are identified when electrical characteristics, mechanical packaging, and regulatory compliance remain equivalent across the specified parameter set.

Key Parameters

Parameter	Value	Unit
FET Type	N-Channel	—
Technology	MOSFET (Metal Oxide)	—
Drain to Source Voltage (Vdss)	30	V
Continuous Drain Current (Id) @ 25°C	350	mA
Rds On (Max) @ 100mA, 4.5V	1.5	Ω
Vgs(th) (Max) @ 250µA	1.4	V
Gate Charge (Qg) (Max) @ 4.5V	0.35	nC
Input Capacitance (Ciss) (Max) @ 15V	13.6	pF
Power Dissipation (Max)	320	mW
Operating Temperature Range	-55 to 150	°C (TJ)
Package Type	SOT-523	—
Mounting Type	Surface Mount	—
RoHS Status	ROHS3 Compliant	—
MSL Rating	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the DMN31D6UT-13 MOSFET is determined by equivalence across the following critical parameters:

Electrical Characteristics: Drain-to-source voltage rating (30V), continuous drain current capacity (350mA @ 25°C), on-resistance (1.5Ω @ 100mA, 4.5V), gate threshold voltage (1.4V @ 250µA), gate charge (0.35nC @ 4.5V), and input capacitance (13.6pF @ 15V) must remain identical.

Thermal Performance: Maximum power dissipation rating of 320mW and operating temperature range of -55°C to 150°C (TJ) must be maintained.

Mechanical & Packaging: Surface mount configuration in SOT-523 package is required for form factor compatibility.

Regulatory Compliance: RoHS3 compliance, MSL 1 rating, and REACH unaffected status must be preserved.

Manufacturer & Series: Parts must originate from Diodes Incorporated and share the DMN31 base product number.

The DMN31D6UT-7 meets all substitution criteria as a parametric equivalent with identical electrical, thermal, and mechanical specifications.

Parameter Comparison

Parameter	DMN31D6UT-13	DMN31D6UT-7	Match
Manufacturer	Diodes Incorporated	Diodes Incorporated	✓
FET Type	N-Channel	N-Channel	✓
Technology	MOSFET (Metal Oxide)	MOSFET (Metal Oxide)	✓
Drain to Source Voltage (Vdss)	30 V	30 V	✓
Continuous Drain Current (Id) @ 25°C	350 mA	350 mA	✓
Rds On (Max) @ 100mA, 4.5V	1.5 Ω	1.5 Ω	✓
Vgs(th) (Max) @ 250µA	1.4 V	1.4 V	✓
Gate Charge (Qg) (Max) @ 4.5V	0.35 nC	0.35 nC	✓
Input Capacitance (Ciss) (Max) @ 15V	13.6 pF	13.6 pF	✓
Power Dissipation (Max)	320 mW	320 mW	✓
Operating Temperature Range	-55 to 150 °C (TJ)	-55 to 150 °C (TJ)	✓
Package Type	SOT-523	SOT-523	✓
Mounting Type	Surface Mount	Surface Mount	✓
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	✓
MSL Rating	1 (Unlimited)	1 (Unlimited)	✓
REACH Status	REACH Unaffected	REACH Unaffected	✓
Product Status	Active	Active	✓

Engineering Selection Recommendations

Both the DMN31D6UT-13 and DMN31D6UT-7 are Active products from Diodes Incorporated with full RoHS3 compliance and REACH unaffected status. Selection between these parts is based on inventory availability and supply chain considerations rather than electrical or mechanical differentiation.

The DMN31D6UT-13 carries 711 pieces in current stock inventory. The DMN31D6UT-7 provides higher inventory availability at 4200 pieces. Both parts satisfy identical electrical performance requirements, thermal specifications, and regulatory compliance mandates for N-Channel MOSFET applications in the 30V, 350mA class.

Component selection should prioritize supply chain continuity and lead time requirements. Either part delivers equivalent functionality in surface mount SOT-523 configurations for low-power switching circuits operating across the -55°C to 150°C temperature range.

Frequently Asked Questions (FAQ)

Q: Can DMN31D6UT-7 replace DMN31D6UT-13 in existing designs?

A: Yes. Both parts are parametric equivalents with identical electrical characteristics, thermal ratings, and SOT-523 packaging. No circuit modifications are required for direct substitution.

Q: What determines substitution eligibility for N-Channel MOSFETs in the DMN31 series?

A: Substitution requires matching drain-to-source voltage (30V), continuous drain current (350mA @ 25°C), on-resistance (1.5Ω @ 100mA, 4.5V), gate threshold voltage (1.4V @ 250µA), gate charge (0.35nC @ 4.5V), input capacitance (13.6pF @ 15V), power dissipation (320mW), operating temperature range (-55°C to 150°C), and SOT-523 surface mount packaging.

Q: Are there differences in moisture sensitivity or handling requirements between these parts?

A: No. Both parts carry MSL 1 (Unlimited) rating, indicating identical moisture sensitivity levels and storage requirements.

Q: Do both parts meet the same regulatory compliance standards?

A: Yes. Both DMN31D6UT-13 and DMN31D6UT-7 are RoHS3 compliant, REACH unaffected, and carry identical ECCN (EAR99) and HTSUS (8541.21.0095) classifications.

Q: What is the primary reason to consider the DMN31D6UT-7 as an alternative?

A: The DMN31D6UT-7 offers significantly higher inventory availability (4200 pieces versus 711 pieces), supporting extended production runs and reducing supply chain risk without compromising electrical or mechanical performance.

Q: Are these parts suitable for high-frequency switching applications?

A: Both parts exhibit identical gate charge (0.35nC @ 4.5V) and input capacitance (13.6pF @ 15V) characteristics, supporting equivalent switching performance in their specified operating range.

Q: Can these MOSFETs be used interchangeably in PCB layouts?

A: Yes. Identical SOT-523 surface mount packaging ensures direct footprint compatibility without layout modifications.

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