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Diodes Incorporated DMN2991UDJ-7A
- Part No.:
- DMN2991UDJ-7A
- Manufacturer:
- Diodes Incorporated
- Category:
- FET, MOSFET Arrays
- Package:
- SOT-963
- Datasheet:
-
DMN2991UDJ-7A.pdf
- Description:
- MOSFET 2N-CH 20V 0.52A SOT963
- Quantity:
- Payment:
- Shipping:
Inventory:9,429
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Product details
Overview
DMN2991UDJ-7A from Diodes Incorporated is a dual N-channel enhancement-mode MOSFET in SOT963 package, rated for 20V VDSS, with RDS(ON) = 0.99Ω @ VGS = 4.5V and ID = 520mA at TA = +25°C. It features ultra-low gate threshold (VGS(TH) ≤ 1.0V), low input capacitance (Ciss = 21.5pF), and ESD-protected gate - optimized for space-constrained DC-DC converter power switches.
For engineers reviewing the DMN2991UDJ-7A datasheet, DMN2991UDJ-7A pinout, DMN2991UDJ-7A application, or DMN2991UDJ-7A equivalent, key selection criteria include low-voltage gate drive compatibility (1.5V–4.5V), dual-channel integration in 1mm × 1mm footprint, thermal resistance (RθJA = 312°C/W), and AEC-Q101 readiness for automotive power management.
Technical Context
This dual MOSFET integrates two matched N-channel devices sharing common source terminals in a single ultra-small SOT963 package. Its sub-1V gate threshold enables direct interfacing with 1.8V logic and low-power microcontrollers without level shifting.
The device delivers fast switching (tD(ON) = 5.6ns, tF = 27.6ns) and low dynamic losses (Qg = 0.35nC), while maintaining robust safe operating area (SOA) up to 1.4A pulsed current under 10μs pulses - critical for high-frequency synchronous buck topologies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDSS | 20V - supports input rails up to 18V in compact DC-DC converters |
| RDS(ON) | 0.99Ω @ VGS = 4.5V - enables <100mW conduction loss at 300mA load |
| VGS(TH) | Max 1.0V - ensures full enhancement with 1.8V I/O domains |
| Ciss | 21.5pF - minimizes gate drive power and improves switching efficiency |
| PD | 0.4W - limits thermal design to FR-4 PCB with minimum pad layout |
| RθJA | 312°C/W - defines junction-to-ambient rise of ~125°C at full 0.4W dissipation |
| Qg | 0.35nC - reduces gate driver current demand in high-frequency (>1MHz) operation |
Pinout & Package
Package: SOT963 - ultra-compact 1.0mm × 1.0mm × 0.45mm surface-mount package with 6 terminals, lead-free matte tin finish, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Source 1 / Source 2 (common) | Internally tied source node for both MOSFETs - requires single ground plane connection |
| 2 | Gate 1 | Independent control input for first N-channel channel - compatible with 1.5V–4.5V logic |
| 3 | Drain 1 | High-side or low-side switching node for first channel - routed separately to avoid cross-talk |
| 4 | Drain 2 | Switching node for second channel - electrically isolated from Drain 1 per datasheet equivalent circuit |
| 5 | Gate 2 | Independent control input for second N-channel channel - enables dual independent switching |
| 6 | Source 1 / Source 2 (common) | Redundant source terminal - must be connected to same net as Pin 1 for mechanical stability |
Key Features
| Feature | Design Value |
|---|---|
| Dual N-channel topology | Two matched MOSFETs in one die - eliminates board space and BOM count vs. discrete pair |
| Ultra-low VGS(TH) | ≤1.0V max - enables direct drive from 1.8V GPIO without external level shifter |
| Low Ciss & Qg | 21.5pF / 0.35nC - reduces gate drive losses and EMI in >1MHz switching applications |
| ESD-protected gate | HBM ≥2kV - improves handling robustness during SMT assembly and rework |
| Green, RoHS-compliant package | Halogen- and antimony-free, UL 94V-0 molding compound - meets IPC-1752A environmental reporting |
Applications
| USB Power Delivery Switching | Wearable Sensor Power Gating |
|---|---|
Use Scenario: Bidirectional 5V/3.3V power path control between USB-C port and system rail in portable medical monitors. IC Role / Device Role: Dual-channel load switch managing VBUS routing and battery backup isolation. Use Value: 1.0V VGS(TH) allows direct control from ARM Cortex-M0+ 1.8V GPIO; 0.99Ω RDS(ON) limits voltage drop to <0.5V at 500mA. | Use Scenario: On-demand power gating of MEMS accelerometers and optical heart-rate sensors in fitness trackers. IC Role / Device Role: Low-quiescent dual switch enabling independent wake-up sequencing and leakage suppression. Use Value: Sub-1V threshold ensures reliable turn-on from coin-cell-supplied 1.5V LDO; 0.4W PD rating supports burst-mode operation without thermal derating. |
| IoT Node Voltage Translation | Automotive Body Control Module |
Use Scenario: Level-shifting interface between 1.8V MCU I/O and 3.3V sensor bus in LPWA edge nodes. IC Role / Device Role: Dual N-channel analog switch replacing discrete FET pairs for bidirectional signal pass-through. Use Value: Matched RDS(ON) across channels (<±10%) ensures symmetrical on-resistance for I²C/SPI lines; 3.7pF Crss minimizes signal distortion. | Use Scenario: LED backlight dimming and small solenoid actuation in door module ECUs. IC Role / Device Role: Dual low-side driver for PWM-controlled 12V loads with integrated ESD protection. Use Value: AEC-Q101 qualification path supported; 20V VDSS provides 50% margin over 13.5V nominal vehicle supply; 0.45mm profile fits under tight connector housings. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual N-channel low-threshold MOSFET applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| DMN2053UFD-7 | Single N-channel, 20V, RDS(ON) = 0.85Ω @ 4.5V, SOT-363 package (2.1mm × 2.0mm) | Requires two devices for dual function; larger footprint (+120% area); higher RθJA (350°C/W) | Select when dual-device layout is acceptable and cost-per-channel is prioritized over board space. |
| AO6401 | Dual N-channel, 30V, RDS(ON) = 0.75Ω @ 4.5V, TSOP-6 package (2.9mm × 1.6mm) | Larger footprint (+230% area); higher VGS(TH) (1.5V max); no ESD rating specified | Select when higher 30V rating is required and 1.0V threshold is not mandatory. |
Compared with DMN2991UDJ-7A, DMN2053UFD-7 increases PCB area and thermal resistance, while AO6401 trades ultra-low threshold and ESD protection for higher voltage rating and slightly lower RDS(ON) - making DMN2991UDJ-7A optimal for space- and low-voltage–constrained wearable and IoT designs.
Availability
DMN2991UDJ-7A is available at Aetrix Electronics and suitable for USB PD power routing, wearable sensor power gating, and IoT voltage translation requiring stable component supply and consistent SOT963 packaging.
Supply support for DMN2991UDJ-7A includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Diodes Incorporated is a global manufacturer of discrete semiconductors and ICs, specializing in high-performance, energy-efficient components for power management, signal integrity, and protection applications.
The DMN2991UDJ-7A belongs to Diodes' Ultra-Small Signal MOSFET product line, engineered specifically for miniaturized battery-powered systems where gate drive voltage, board area, and thermal performance are tightly coupled constraints.
FAQ
What is the maximum continuous drain current for DMN2991UDJ-7A at 70°C ambient?
At TA = +70°C, the continuous drain current is 415mA when VGS = 4.5V and the device is mounted on an FR-4 PCB with minimum recommended pad layout. This derating reflects thermal limitations imposed by RθJA = 312°C/W and PD = 0.4W maximum.
Does DMN2991UDJ-7A support 1.5V gate drive in production use?
Yes - VGS(TH) is guaranteed ≤1.0V, and RDS(ON) = 2.4Ω is specified at VGS = 1.5V with ID = 330mA. Real-world operation at 1.5V is validated across temperature (-55°C to +150°C) and process corners per datasheet Figure 4 and Table.
How does the SOT963 package affect thermal performance compared to SOT-363?
SOT963's 1.0mm × 1.0mm footprint yields higher power density but lower absolute heat-sinking capability than SOT-363. Its RθJA = 312°C/W is 12% higher than typical SOT-363 devices (~275°C/W), requiring tighter thermal pad design and limiting sustained power to ≤0.25W in most layouts.
Is DMN2991UDJ-7A qualified to AEC-Q101 for automotive use?
The datasheet states that automotive-grade versions qualified to AEC-Q101 are available upon request and manufactured in IATF 16949 certified facilities. The DMN2991UDJ-7A itself is not pre-qualified, but Diodes offers a controlled change process and PPAP support for automotive derivatives.
DMN2991UDJ-7A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SOT-963
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- MOSFET (Metal Oxide)
- Configuration:
- 2 N-Channel (Dual)
- FET Feature:
- -
- Drain to Source Voltage (Vdss):
- 20V
- Current - Continuous Drain (Id) @ 25°C:
- 520mA (Ta)
- Rds On (Max) @ Id, Vgs:
- 990mOhm @ 100mA, 4.5V
- Vgs(th) (Max) @ Id:
- 1V @ 250µA
- Gate Charge (Qg) (Max) @ Vgs:
- 0.35nC @ 4.5V
- Input Capacitance (Ciss) (Max) @ Vds:
- 21.5pF @ 15V
- Power - Max:
- 400mW (Ta)
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-963
DMN2991UDJ-7A FAQ
1.How can I place an order for DMN2991UDJ-7A through Aetrix?
Please submit a Request for Quotation (RFQ) for DMN2991UDJ-7A on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for DMN2991UDJ-7A reliable?
The price and inventory of DMN2991UDJ-7A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DMN2991UDJ-7A is usually 5 days.
3.What payment methods are accepted for DMN2991UDJ-7A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DMN2991UDJ-7A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DMN2991UDJ-7A?
DMN2991UDJ-7A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DMN2991UDJ-7A order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for DMN2991UDJ-7A?
For technical support, including DMN2991UDJ-7A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DMN2991UDJ-7A requirements.
6.How does Aetrix verify that DMN2991UDJ-7A is sourced from the original manufacturer or authorized distributors?
All DMN2991UDJ-7A products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that DMN2991UDJ-7A meets industry standards.
7.What is the process for return or replacement of DMN2991UDJ-7A?
All DMN2991UDJ-7A units undergo pre-shipment inspection (PSI). If there is an issue with DMN2991UDJ-7A, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The DMN2991UDJ-7A part is unused and in its original packaging.
Return procedure for DMN2991UDJ-7A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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