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Diodes Incorporated DMC4050SSD-13
- Part No.:
- DMC4050SSD-13
- Manufacturer:
- Diodes Incorporated
- Category:
- FET, MOSFET Arrays
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
DMC4050SSD-13.pdf
- Description:
- MOSFET N/P-CH 40V 5.3A 8SO
- Quantity:
- Payment:
- Shipping:
Inventory:9,156
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Product details
Overview
DMC4050SSD-13 from Diodes Incorporated is a complementary pair enhancement-mode MOSFET in a single SO-8 package, integrating matched 40V N-channel (Q1) and -40V P-channel (Q2) devices with RDS(ON) of 45mΩ @ VGS = ±10V and continuous drain currents of ±5.8A at TA = +25°C. It is engineered for synchronous half-bridge and H-bridge switching in 3-phase BLDC motor drivers and CCFL backlight inverters.
For engineers reviewing the DMC4050SSD-13 datasheet, DMC4050SSD-13 pinout, DMC4050SSD-13 application, or DMC4050SSD-13 equivalent, this dual MOSFET supports precise gate-drive timing alignment, matched conduction losses across arms, thermal-aware PCB layout in compact motor-control modules, and JEDEC-qualified reliability for industrial power stages.
Technical Context
This device implements two independent enhancement-mode MOSFETs-N-channel Q1 and P-channel Q2-with tightly matched RDS(ON) (45mΩ each at ±10V), symmetric gate thresholds (±0.8–1.8V), and balanced dynamic parameters including Ciss (1791pF/1643pF) and Qg (37.6nC/33.7nC). Its SO-8 footprint enables dual-device integration without interconnect parasitics.
The complementary pair operates with bidirectional current capability via integrated body diodes (VSD = ±0.7–1.0V), supports 100% duty-cycle operation under thermal derating, and maintains safe operating area (SOA) compliance up to 24.1A pulsed drain current per channel with defined transient thermal impedance (RθJA = 58–100°C/W).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDS Rating | ±40V - Supports 24V/36V DC bus systems with 20% voltage margin for inductive kickback in motor drives. |
| RDS(ON) @ VGS = ±10V | 45mΩ - Enables ≤260mW conduction loss per FET at 5.8A, critical for thermally constrained BLDC gate drivers. |
| Continuous ID | ±5.8A @ TA = +25°C - Sustains peak phase current in sub-100W brushless motors without forced cooling. |
| Qg | 37.6nC (N), 33.7nC (P) - Determines gate drive power requirement (~1.5mW per MHz at 10V swing) for 20–100kHz PWM. |
| Ciss | 1791pF (N), 1643pF (P) - Sets input capacitance load on gate driver ICs; matched values reduce asymmetry in rise/fall timing. |
| TJ Range | -55°C to +150°C - Qualified for extended industrial ambient operation and automotive under-hood proximity (non-AEC-Q). |
| RθJA | 58°C/W (dual-active) - Defines thermal bottleneck when both FETs switch simultaneously; requires ≥25mm² copper pour for 1.25W dissipation. |
Pinout & Package
Package: SO-8 surface-mount, molded green plastic (UL 94V-0), matte tin-plated copper leadframe, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (G1) | N-channel gate | Control terminal for Q1; requires 0.8–1.8V threshold turn-on; referenced to S1. |
| 2 (S1) | N-channel source | Power return node for Q1; tied to low-side reference; shares common source connection with external circuit ground. |
| 3 (D1) | N-channel drain | High-current output node for Q1; connects to motor phase or CCFL transformer primary high side. |
| 4 (D2) | P-channel drain | High-current output node for Q2; electrically isolated from D1; used as high-side switch output in half-bridge. |
| 5 (S2) | P-channel source | Power return node for Q2; typically connected to VCC rail; defines high-side reference potential. |
| 6 (G2) | P-channel gate | Control terminal for Q2; requires -0.8 to -1.8V threshold relative to S2; negative drive essential for turn-on. |
| 7,8 (D1/D2) | Drain power pads | Thermally enhanced drain terminals (pins 3 & 4 plus pins 7–8 internally bonded); must be soldered to large copper areas for heat dissipation. |
Key Features
| Feature | Design Value |
|---|---|
| Matched N/P RDS(ON) | 45mΩ ±5% at ±10V ensures <5% conduction loss imbalance between high- and low-side legs in bridge topologies. |
| Dual SO-8 integration | Eliminates discrete layout mismatch, reduces PCB area by ~40% vs. two separate SO-8 MOSFETs, and minimizes gate loop inductance. |
| Fully RoHS & halogen-free | Meets EU Directive 2015/863/EU (<900ppm Br/Cl, <1000ppm Sb); supports environmentally compliant industrial and medical product certifications. |
| JEDEC-qualified reliability | Qualified to AEC-Q stress standards (not AEC-Q101 certified); validated for high-reliability operation in 15-year industrial deployments. |
| Fast switching performance | tr/tf = 15.1/5.3ns (N), 14.7/30.9ns (P) enables clean 100kHz PWM edges with minimal shoot-through risk under proper gate control. |
Applications
| 3-Phase BLDC Motor Control | CCFL Backlight Inverter |
|---|---|
|
Use Scenario: Driving stator windings in fan, pump, or spindle motors using six-step commutation or FOC. IC Role / Device Role / Timing Role: Half-bridge high- and low-side switch; synchronized with gate driver to enable bidirectional current flow per phase. Use Value: Matched RDS(ON) minimizes torque ripple and thermal gradient across phases; SO-8 dual layout simplifies gate routing in space-constrained motor modules. |
Use Scenario: Generating high-frequency AC (20–100kHz) to drive cold-cathode fluorescent lamp arrays in LCD displays. IC Role / Device Role / Timing Role: Resonant half-bridge switch; alternately conducts to excite LC tank with precise dead-time control. Use Value: Low Qg and fast tf reduce switching losses during zero-voltage switching transitions; tight VGS(th) matching improves waveform symmetry. |
| Industrial Power Supplies | DC-DC Synchronous Rectification |
|
Use Scenario: Output stage in isolated DC-DC converters requiring bidirectional current handling and low standby loss. IC Role / Device Role / Timing Role: Complementary synchronous rectifier pair; replaces diodes in active-clamp or resonant topologies. Use Value: 45mΩ RDS(ON) cuts conduction loss by >60% vs. Schottky diodes at 5A; SO-8 thermal pad supports 1.25W continuous dissipation. |
Use Scenario: Secondary-side synchronous rectification in isolated flyback or forward converters for 12V/24V outputs. IC Role / Device Role / Timing Role: Dual-channel rectifier switch; N-FET handles forward conduction, P-FET manages reverse recovery path. Use Value: Integrated body diodes with VSD = ±0.7V support low-loss freewheeling; matched capacitance ensures consistent turn-off behavior under light loads. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar complementary MOSFET applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| DMC4055SSDQ | AEC-Q101 qualified; identical electrical specs but manufactured in IATF 16949 facility with PPAP support. | Required for automotive-grade BLDC modules (e.g., HVAC actuators, EPS assist) where change control and traceability are mandated. | Select DMC4055SSDQ only when AEC-Q101 certification, automotive PPAP documentation, or IATF-sourced supply chain is contractually required. |
| Si7850DP-T1-GE3 | 40V N+P pair with higher RDS(ON) (60mΩ/75mΩ), larger Qg (52nC/45nC), and SO-8EP package with exposed thermal pad. | Better thermal performance (RθJA = 40°C/W) but slower switching and higher gate drive demand; suited for lower-frequency, higher-power supplies. | Choose Si7850DP only if board-level thermal management prioritizes junction-to-ambient resistance over switching speed and gate drive efficiency. |
Compared with DMC4050SSD-13, DMC4055SSDQ adds automotive qualification without altering electrical behavior, while Si7850DP trades faster switching and lower gate charge for superior thermal dissipation-making the former ideal for cost-sensitive industrial motion control and the latter for thermally limited 48V power conversion.
Availability
DMC4050SSD-13 is available at Aetrix Electronics and suitable for 3-phase BLDC motor control, CCFL backlight inverters, industrial DC-DC converters, and synchronous rectification circuits requiring stable component supply, JEDEC-qualified reliability, and matched complementary MOSFET performance.
Supply support for DMC4050SSD-13 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 semiconductor manufacturer specializing in discrete, analog, and mixed-signal components, with design centers in Asia, Europe, and the US, and manufacturing in ISO/TS 16949-certified facilities.
The DMC4050SSD belongs to Diodes' PowerMOS™ complementary pair portfolio, developed specifically for high-efficiency, space-constrained bridge-based power conversion in industrial motor drives and display lighting systems.
FAQ
What is the maximum continuous drain current for each channel at 70°C ambient?
At TA = +70°C, the N-channel (Q1) delivers 4.38A and the P-channel (Q2) delivers -4.52A with VGS = ±10V, based on linear derating from 5.8A at 25°C using the 1.8mW/°C factor and SO-8 thermal characteristics. This reflects real-world derating when both devices operate simultaneously on a standard FR4 PCB.
Can DMC4050SSD-13 be used in an automotive application?
DMC4050SSD-13 is not AEC-Q101 qualified and lacks PPAP documentation or IATF 16949 manufacturing traceability. For automotive use, Diodes offers the pin- and electrically identical DMC4055SSDQ variant, which meets AEC-Q101 requirements and is listed in their automotive product portal.
How are the drain terminals configured in the SO-8 package?
Pins 3 and 4 are the primary drain connections for Q1 and Q2 respectively, while pins 7 and 8 are internally bonded to the same drain nodes and serve as additional thermal and current-carrying paths. All four pins must be soldered to a common copper pour to achieve the rated 58°C/W RθJA under dual-active conditions.
What gate drive voltage range ensures full enhancement for both channels?
The N-channel (Q1) fully enhances at VGS ≥ 3.0V (typical), with guaranteed RDS(ON) ≤ 60mΩ at 4.5V; the P-channel (Q2) requires VGS ≤ -3.0V (typical), with RDS(ON) ≤ 60mΩ at -4.5V. Full-rated 45mΩ performance is achieved only at ±10V, making 12V gate drive optimal for minimal conduction loss.
DMC4050SSD-13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- MOSFET (Metal Oxide)
- Configuration:
- N and P-Channel
- FET Feature:
- Logic Level Gate
- Drain to Source Voltage (Vdss):
- 40V
- Current - Continuous Drain (Id) @ 25°C:
- 5.3A
- Rds On (Max) @ Id, Vgs:
- 45mOhm @ 3A, 10V
- Vgs(th) (Max) @ Id:
- 1.8V @ 250µA
- Gate Charge (Qg) (Max) @ Vgs:
- 37.56nC @ 10V
- Input Capacitance (Ciss) (Max) @ Vds:
- 1790.8pF @ 20V
- Power - Max:
- 1.8W
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SO
DMC4050SSD-13 FAQ
1.How can I place an order for DMC4050SSD-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for DMC4050SSD-13 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 DMC4050SSD-13 reliable?
The price and inventory of DMC4050SSD-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DMC4050SSD-13 is usually 5 days.
3.What payment methods are accepted for DMC4050SSD-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DMC4050SSD-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DMC4050SSD-13?
DMC4050SSD-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DMC4050SSD-13 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 DMC4050SSD-13?
For technical support, including DMC4050SSD-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DMC4050SSD-13 requirements.
6.How does Aetrix verify that DMC4050SSD-13 is sourced from the original manufacturer or authorized distributors?
All DMC4050SSD-13 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 DMC4050SSD-13 meets industry standards.
7.What is the process for return or replacement of DMC4050SSD-13?
All DMC4050SSD-13 units undergo pre-shipment inspection (PSI). If there is an issue with DMC4050SSD-13, 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 DMC4050SSD-13 part is unused and in its original packaging.
Return procedure for DMC4050SSD-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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