DMN3731U-13 N-Channel MOSFET 30V 900mA SOT-23 Equivalent & Substitute Parts

Part Overview

The DMN3731U-13 is an N-Channel MOSFET manufactured by Diodes Incorporated, rated for 30V drain-to-source voltage with 900mA continuous drain current at 25°C. This device is housed in a surface mount SOT-23-3 package and dissipates a maximum of 400mW. The part is currently in active production status with ROHS3 compliance and unlimited moisture sensitivity level (MSL 1).

Substitute parts are identified when equivalent electrical performance and mechanical compatibility are maintained across the same parametric specifications. The primary distinction between the main part and its substitute lies in packaging format and inventory availability rather than electrical characteristics.

Substiute Parts

DMN3731U-13

Diodes IncorporatedIn Stock: 10358DMN3731U-13 Datasheet

Current PartRFQ

DMN3731U-7

Diodes IncorporatedIn Stock: 80210DMN3731U-7 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the DMN3731U-13 with the DMN3731U-7 is based on identical electrical and mechanical parameters. Both devices share the same base product number (DMN3731) and are manufactured by Diodes Incorporated. The substitution is valid because the following critical parameters are equivalent:

• Drain-to-source voltage rating: 30V
• Continuous drain current: 900mA at 25°C
• On-resistance (Rds On): 460mOhm at 200mA, 4.5V gate voltage
• Gate threshold voltage: 950mV at 250µA
• Gate charge: 5.5nC at 4.5V
• Input capacitance: 73pF at 25V
• Power dissipation: 400mW
• Operating temperature range: -55°C to 150°C
• Package designation: SOT-23-3 (TO-236-3, SC-59)
• Surface mount configuration

The distinction between these parts is limited to packaging format: the DMN3731U-13 is supplied in Tape & Reel (TR) format, while the DMN3731U-7 is supplied in Cut Tape (CT) and Digi-Reel® format. Both maintain identical electrical performance and physical dimensions.

Parameter Comparison

Engineering Selection Recommendations

Both the DMN3731U-13 and DMN3731U-7 are active production devices with ROHS3 compliance and REACH unaffected status. Selection between these parts should be based on procurement and assembly requirements:

DMN3731U-13 (Tape & Reel): Suitable for high-volume automated assembly operations where continuous tape feeding is required. Tape & Reel packaging is optimized for pick-and-place equipment integration.

DMN3731U-7 (Cut Tape & Digi-Reel®): Suitable for lower-volume production runs, prototyping, or applications where flexible packaging formats are advantageous. Cut Tape format allows for individual component handling, while Digi-Reel® provides an alternative reel configuration.

Both parts carry identical electrical specifications, thermal characteristics, and compliance certifications. The choice between them does not affect circuit performance or reliability. Inventory availability may influence selection, as the DMN3731U-7 currently maintains higher stock levels (80,200 pcs vs. 10,314 pcs).

Frequently Asked Questions (FAQ)

Q: Can the DMN3731U-7 be used as a direct replacement for the DMN3731U-13 in production?

A: Yes. Both parts are electrically and mechanically identical. The only difference is packaging format (Tape & Reel versus Cut Tape & Digi-Reel®). Direct substitution is valid for any application where the DMN3731U-13 is specified, provided the assembly process can accommodate the alternative packaging format.

Q: Are there any performance differences between these two part numbers?

A: No. All electrical parameters, thermal ratings, and operating characteristics are identical. Both devices deliver the same 30V Vdss rating, 900mA continuous drain current, 460mOhm on-resistance, and 400mW power dissipation.

Q: What is the significance of the different packaging formats?

A: Tape & Reel (TR) format is designed for automated high-speed pick-and-place assembly lines. Cut Tape (CT) and Digi-Reel® formats provide flexibility for manual assembly, prototyping, or lower-volume production. The physical component dimensions and PCB footprint remain identical.

Q: Do both parts meet the same compliance standards?

A: Yes. Both the DMN3731U-13 and DMN3731U-7 are ROHS3 compliant, REACH unaffected, and carry MSL 1 (unlimited moisture sensitivity level). Compliance certifications are identical.

Q: Can these parts be mixed in the same production batch?

A: Yes, from an electrical and functional standpoint. However, assembly process compatibility should be verified. If your production line is configured for Tape & Reel input, the Cut Tape format requires process adjustment. Conversely, manual assembly operations may prefer Cut Tape format.

Q: What is the SOT-23-3 package footprint?

A: The SOT-23-3 package, also designated as TO-236-3 or SC-59, is a three-lead surface mount package with standardized dimensions. Both parts use identical footprints and are interchangeable at the PCB level.

Q: Are there any thermal or reliability differences between the two part numbers?

A: No. Both devices operate across the same temperature range (-55°C to 150°C junction temperature) and dissipate identical maximum power (400mW). Reliability and thermal performance are equivalent.