DMN2991UT-7 Equivalent & Substitute Parts

Part Overview

The DMN2991UT-7 is an N-Channel MOSFET manufactured by Diodes Incorporated, designed for surface mount applications in the SOT-523 package. This device operates at 20 V drain-to-source voltage with a continuous drain current rating of 300 mA and maximum power dissipation of 280 mW. The part is currently in active production status with substantial inventory availability (426,400 pieces). Equivalent and substitute parts are identified to support design flexibility, supply chain continuity, and application-specific requirements such as automotive qualification or alternative packaging configurations.

Substiute Parts

DMN2991UT-7

Diodes IncorporatedIn Stock: 426414DMN2991UT-7 Datasheet

Current PartRFQ

DMN2991UT-13

Diodes IncorporatedIn Stock: 755DMN2991UT-13 Datasheet

Parametric EquivalentRFQ

DMN2991UTQ-7

Diodes IncorporatedIn Stock: 781DMN2991UTQ-7 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the DMN2991UT-7 is determined by electrical and mechanical parameter equivalence across the N-Channel MOSFET family. The following criteria establish valid substitution:

Electrical Equivalence Requirements:

• Drain to Source Voltage (Vdss): 20 V
• Continuous Drain Current (Id) @ 25°C: 300 mA
• Rds On (Max) @ 100mA, 4.5V: 3 Ω
• Gate Threshold Voltage (Vgs(th)) @ 250µA: 1 V
• Gate Charge (Qg) @ 4.5V: 0.35 nC
• Input Capacitance (Ciss) @ 15V: 21.5 pF
• Power Dissipation (Max): 280 mW
• Operating Temperature Range: -55°C to 150°C

Mechanical Equivalence Requirements:

• Package Type: SOT-523
• Mounting Type: Surface Mount
• Manufacturer: Diodes Incorporated
• Base Product Number: DMN2991

Compliance Requirements:

• RoHS3 Compliant
• REACH Unaffected

The identified substitutes (DMN2991UT-13 and DMN2991UTQ-7) meet all electrical and mechanical parameters. The DMN2991UTQ-7 variant includes automotive-grade qualification (AEC-Q101) for applications requiring enhanced reliability standards.

Parameter Comparison

Engineering Selection Recommendations

DMN2991UT-7 (Primary Part) Select this part for standard commercial applications requiring high inventory availability and immediate procurement. All electrical and mechanical specifications are met with active production status and ROHS3 compliance.

DMN2991UT-13 (Parametric Equivalent) This part provides identical electrical and mechanical performance to the DMN2991UT-7 with equivalent compliance certifications. Selection is appropriate when primary part availability is constrained. Inventory is limited (654 pieces).

DMN2991UTQ-7 (Automotive-Grade Equivalent) This variant is qualified to AEC-Q101 automotive standards and is suitable for applications requiring automotive-grade reliability and traceability. All electrical parameters remain identical to the primary part. This option is appropriate for automotive, industrial, and mission-critical applications where enhanced qualification is specified. Inventory availability is 746 pieces.

All three parts are manufactured by Diodes Incorporated, share the same base product number (DMN2991), and are ROHS3 compliant with REACH unaffected status.

Frequently Asked Questions (FAQ)

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

A: Yes. The DMN2991UT-13 is a parametric equivalent with identical electrical specifications (Vdss, Id, Rds On, Vgs(th), Qg, Ciss, power dissipation, and operating temperature range) and mechanical specifications (SOT-523 package, surface mount, tape & reel packaging). Both parts are manufactured by Diodes Incorporated and meet ROHS3 compliance.

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

A: The DMN2991UTQ-7 is qualified to AEC-Q101 automotive standards, while the DMN2991UT-7 is not. All electrical and mechanical parameters are identical. The automotive qualification makes the DMN2991UTQ-7 suitable for applications requiring enhanced reliability certification and automotive-grade traceability.

Q: Are all three parts pin-compatible?

A: Yes. All three parts use the SOT-523 package with identical pin configuration and are surface mount devices. They are mechanically and electrically interchangeable at the board level.

Q: Which part should be selected for automotive applications?

A: The DMN2991UTQ-7 is the appropriate selection for automotive applications due to its AEC-Q101 qualification. This certification ensures the part meets automotive industry reliability and quality standards.

Q: What is the significance of the suffix in the part number (UT-7, UT-13, UTQ-7)?

A: The suffix designates the manufacturing date code or qualification variant. The "Q" in DMN2991UTQ-7 indicates automotive-grade qualification (AEC-Q101). The numeric suffixes (7 and 13) represent different manufacturing date codes. All variants share the same base product number (DMN2991) and electrical specifications.

Q: Are there inventory considerations when selecting between these parts?

A: Yes. The DMN2991UT-7 has the highest inventory (426,400 pieces), followed by DMN2991UTQ-7 (746 pieces) and DMN2991UT-13 (654 pieces). For applications with long lead time requirements, the DMN2991UT-7 is the preferred choice due to superior availability.

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

A: Yes, provided the application does not require automotive-grade qualification. All three parts meet identical electrical and mechanical specifications and are ROHS3 compliant. However, if automotive qualification is required, only the DMN2991UTQ-7 should be used.