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Diodes Incorporated DMC2991UDJ-7
- Part No.:
- DMC2991UDJ-7
- Manufacturer:
- Diodes Incorporated
- Category:
- FET, MOSFET Arrays
- Package:
- SOT-963
- Datasheet:
-
DMC2991UDJ-7.pdf
- Description:
- MOSFET N/P-CH 20V 0.5A SOT963
- Quantity:
- Payment:
- Shipping:
Inventory:9,845
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Product details
Overview
DMC2991UDJ-7 from Diodes Incorporated is a complementary pair enhancement-mode MOSFET in a single SOT963 package, integrating an N-channel (20V, 0.99Ω @ 4.5V) and P-channel (-20V, 1.9Ω @ -4.5V) device with ultra-low gate threshold voltages (±1.0V max), low input capacitance (21.5pF/17pF), and ESD-protected gates - designed for compact, high-efficiency power switching in space-constrained portable electronics.
For engineers reviewing the DMC2991UDJ-7 datasheet, DMC2991UDJ-7 pinout, DMC2991UDJ-7 application, or DMC2991UDJ-7 equivalent, this dual-channel discrete solution supports low-voltage logic-level drive, bidirectional load control, and rail-to-rail analog switching in battery-powered systems where board area and gate drive simplicity are critical.
Technical Context
This complementary pair operates with matched low-threshold gate drive: N-channel VGS(th) ≤ 1.0V and P-channel VGS(th) ≥ −1.0V, enabling direct interface with 1.8V/2.5V/3.3V microcontrollers without level-shifting. Each channel delivers stable RDS(on) across −55°C to +150°C junction temperature, with normalized on-resistance variation under 15% over full thermal range at fixed VGS.
Thermal performance is defined by RθJA = 329°C/W on FR-4 PCB with minimum pad layout, supporting continuous operation up to 380mW dissipation. Dynamic characteristics include fast switching (tF = 27.6ns N-ch / 97ns P-ch) and low total gate charge (0.35nC / 0.3nC), minimizing drive power and transition losses in high-frequency DC-DC and load-switching topologies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDSS | N-ch: 20V; P-ch: −20V - enables dual-rail operation up to ±18V supply with 2V margin for transients. |
| RDS(on) @ VGS = ±4.5V | N-ch: 0.99Ω; P-ch: 1.9Ω - supports ≥500mA N-ch / ≥360mA P-ch continuous current with <500mW conduction loss at rated ID. |
| VGS(th) | N-ch: ≤1.0V; P-ch: ≥−1.0V - ensures full enhancement with 1.8V logic outputs, eliminating external gate drivers in low-power MCU interfaces. |
| Ciss | N-ch: 21.5pF; P-ch: 17pF - reduces capacitive loading on driving GPIOs and improves switching efficiency above 1MHz. |
| PD (TA = +25°C) | 0.38W - defines maximum steady-state power handling on standard FR-4; derates to ~0.22W at +70°C ambient. |
| Package | SOT963 (1.0mm × 1.0mm × 0.5mm) - occupies 1mm² footprint, compatible with 0201-class placement equipment and ultra-dense PCB layouts. |
| ESD Rating | HBM ≥2kV - protects gate oxide during assembly and field operation without requiring external TVS diodes. |
Pinout & Package
SOT963 is a 6-terminal ultra-small surface-mount package with 0.35mm pin pitch, molded green plastic housing (UL 94V-0), and matte tin–annealed copper leadframe. Pin 1 (N-ch Source) and Pin 6 (P-ch Source) are internally tied to the exposed drain paddle for thermal and electrical reference.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | N-channel Source | Common source node for N-ch; ties to ground or low-side return path in half-bridge configurations. |
| 2 | N-channel Gate | Logic-level input for N-ch; requires no level shifter when driven by 1.8V–3.3V microcontroller GPIO. |
| 3 | N-channel Drain | Switched output node for N-ch; connects to load cathode or positive rail in high-side switch via external P-ch. |
| 4 | P-channel Drain | Switched output node for P-ch; connects to load anode or negative rail in low-side switch or complementary pair. |
| 5 | P-channel Gate | Inverted logic input for P-ch; active-low control enables simple push-pull or bidirectional load switching. |
| 6 | P-channel Source | Common source node for P-ch; ties to VCC or high-side supply rail in high-side switch applications. |
Key Features
| Feature | Design Value |
|---|---|
| Complementary N+P pair in one package | Reduces PCB area by >50% vs. discrete SOT-23 solutions; eliminates routing mismatch between channels. |
| Ultra-low VGS(th) (±1.0V max) | Enables direct drive from 1.8V I/O banks without external level shifters - critical for wearables and IoT sensors. |
| Low Ciss and Qg | N-ch Ciss = 21.5pF, Qg = 0.35nC - minimizes gate drive energy and propagation delay in 1–10MHz switching circuits. |
| ESD-protected gate structure | HBM ≥2kV rating - eliminates need for external gate protection components in handheld and portable designs. |
| Green, RoHS-compliant construction | Halogen- and antimony-free molding compound (<900ppm Br/Cl, <1000ppm Sb); fully lead-free per EU RoHS 3. |
Applications
| Battery-Powered Load Switch | USB Port Power Control |
|---|---|
|
Use Scenario: Enabling/disabling power to peripheral modules (e.g., BLE radio, sensor hub) in smart watches to extend battery life. IC Role / Device Role / Timing Role: Dual-channel load switch controlling both VBAT and GND paths to isolate leakage and ensure zero-current standby. Use Value: Achieves <1μA system shutdown current using matched N+P thresholds and low IDSS (<1μA), extending runtime by >15% vs. single-MOSFET solutions. |
Use Scenario: Managing VBUS power delivery and overcurrent protection in USB-C receptacles of portable media players. IC Role / Device Role / Timing Role: Complementary pair acts as bidirectional power switch and reverse-current blocker between host and device ports. Use Value: Prevents backfeed from device to host using P-ch body diode orientation and <2.4Ω RDS(on) at 1.5V VGS, meeting USB 2.0 voltage drop requirements. |
| Low-Voltage Analog Signal Routing | Microcontroller I/O Expansion |
|
Use Scenario: Multiplexing audio signals between codec, microphone, and speaker in hearing aids with 1.2V supply rails. IC Role / Device Role / Timing Role: Bidirectional analog switch replacing mechanical relays or larger analog switches, leveraging low RDS(on) flatness. Use Value: Delivers <0.5Ω on-resistance variation over 0–1.2V signal swing (VGS = 1.8V), preserving SNR >95dB in audio paths. |
Use Scenario: Expanding GPIO count for industrial sensor nodes using low-cost 8-bit MCUs with limited native I/O. IC Role / Device Role / Timing Role: Logic-level translator and buffer for driving higher-capacitance loads (e.g., LED arrays, small solenoids). Use Value: Supports 100mA sink/source per channel at 3.3V VGS with <10ns propagation delay, enabling real-time status indication without MCU firmware overhead. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar complementary MOSFET switching applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| DMC2038UVT-7 | Same SOT963 package but N/P VDSS = ±20V; RDS(on) higher (1.4Ω/2.8Ω @ ±4.5V); VGS(th) looser (±1.5V max). | Lower drive sensitivity and higher conduction loss limit use to non-critical 3.3V-only systems with relaxed efficiency targets. | Select when cost is prioritized over thermal performance and gate drive margin in consumer-grade products. |
| DMC2048UVT-7 | Higher VDSS (±30V), same package; RDS(on) significantly higher (2.2Ω/4.5Ω @ ±4.5V); Qg doubled (0.7nC/0.6nC). | Supports wider input ranges but sacrifices switching speed and gate drive compatibility with sub-2V logic families. | Choose only when 24V rail compatibility is mandatory and board area constraints allow trade-off in efficiency and response time. |
Compared with DMC2991UDJ-7, DMC2038UVT-7 offers lower cost but reduced gate drive margin and higher RDS(on), while DMC2048UVT-7 extends voltage range at the expense of switching speed and 1.8V compatibility - making DMC2991UDJ-7 optimal for space- and efficiency-critical 1.8V–3.3V portable systems.
Availability
DMC2991UDJ-7 is available at Aetrix Electronics and suitable for battery management, USB power delivery, analog signal routing, and microcontroller I/O expansion requiring stable component supply across high-mix, low-volume production runs.
Supply support for DMC2991UDJ-7 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 analog ICs, specializing in high-reliability, energy-efficient components for consumer, industrial, and automotive markets.
The DMC2991UDJ belongs to Diodes' Ultra-Small Signal MOSFET product line, engineered specifically for miniaturized power management in portable electronics where gate drive simplicity, thermal efficiency, and footprint reduction are primary design goals.
FAQ
What is the maximum continuous drain current for each channel at +70°C ambient?
The N-channel supports 400mA and the P-channel supports −290mA at TA = +70°C with FR-4 PCB and minimum pad layout, per the Absolute Maximum Ratings table. These values reflect thermal derating from the +25°C ratings (500mA/−360mA) due to reduced heat dissipation capability at elevated ambient temperatures.
Can DMC2991UDJ-7 be used in analog switch applications with 0–1.2V signal swing?
Yes - its RDS(on) remains below 0.92Ω for the N-channel and 1.8Ω for the P-channel across 0–1.2V VDS at VGS = 1.8V, and exhibits minimal on-resistance variation (<15%) over that range, making it suitable for low-distortion analog multiplexing in hearing aids and medical sensors.
Is the SOT963 package lead-free and RoHS 3 compliant?
Yes - DMC2991UDJ-7 uses matte tin–annealed copper leadframe and halogen/antimony-free green molding compound, meeting EU RoHS Directive 2015/863/EU (RoHS 3) with <900ppm bromine/chlorine and <1000ppm antimony, and carries no purposely added lead.
How does the ESD protection affect gate reliability during automated assembly?
The integrated HBM-rated ESD protection (≥2kV) prevents gate oxide damage during tape-and-reel handling, pick-and-place, and reflow soldering, eliminating the need for external gate protection and reducing assembly yield loss in Class 0 ESD-sensitive environments typical of wearable electronics manufacturing.
DMC2991UDJ-7 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:
- N and P-Channel Complementary
- FET Feature:
- -
- Drain to Source Voltage (Vdss):
- 20V
- Current - Continuous Drain (Id) @ 25°C:
- 500mA (Ta), 360mA (Ta)
- Rds On (Max) @ Id, Vgs:
- 990mOhm @ 100mA, 4.5V, 1.9Ohm @ 100mA, 4.5V
- Vgs(th) (Max) @ Id:
- 1V @ 250µA
- Gate Charge (Qg) (Max) @ Vgs:
- 0.35nC @ 4.5V, 0.3nC @ 4.5V
- Input Capacitance (Ciss) (Max) @ Vds:
- 21.5pF @ 15V, 17pF @ 16V
- Power - Max:
- 380mW (Ta)
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-963
DMC2991UDJ-7 FAQ
1.How can I place an order for DMC2991UDJ-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for DMC2991UDJ-7 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 DMC2991UDJ-7 reliable?
The price and inventory of DMC2991UDJ-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DMC2991UDJ-7 is usually 5 days.
3.What payment methods are accepted for DMC2991UDJ-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DMC2991UDJ-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DMC2991UDJ-7?
DMC2991UDJ-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DMC2991UDJ-7 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 DMC2991UDJ-7?
For technical support, including DMC2991UDJ-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DMC2991UDJ-7 requirements.
6.How does Aetrix verify that DMC2991UDJ-7 is sourced from the original manufacturer or authorized distributors?
All DMC2991UDJ-7 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 DMC2991UDJ-7 meets industry standards.
7.What is the process for return or replacement of DMC2991UDJ-7?
All DMC2991UDJ-7 units undergo pre-shipment inspection (PSI). If there is an issue with DMC2991UDJ-7, 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 DMC2991UDJ-7 part is unused and in its original packaging.
Return procedure for DMC2991UDJ-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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