My Inquiry
My Account
Diodes Incorporated DMN3732UQ-7
- Part No.:
- DMN3732UQ-7
- Manufacturer:
- Diodes Incorporated
- Category:
- FETs, MOSFETs
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
DMN3732UQ-7.pdf
- Description:
- MOSFET BVDSS: 25V~30V SOT23 T&R
- Quantity:
- Payment:
- Shipping:
Inventory:7,766
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
DMN3732UQ-7 from Diodes Incorporated is a 30V N-channel enhancement-mode MOSFET in SOT23 package, optimized for low-voltage load switching with RDS(ON) = 460 mΩ @ VGS = 4.5V, ID = 1 A, and gate threshold voltage of 0.45–0.95 V. It serves as a compact, AEC-Q101-qualified power switch in portable electronics battery management and USB power delivery circuits.
For engineers reviewing the DMN3732UQ-7 datasheet, DMN3732UQ-7 pinout, DMN3732UQ-7 application, or DMN3732UQ-7 equivalent, key selection criteria include its 1.8V logic-compatible gate drive, ESD-protected gate, fast switching (tD(ON) = 1.1 ns), and thermal resistance of 192 °C/W under recommended PCB layout - critical for space-constrained, thermally sensitive designs.
Technical Context
This MOSFET employs a planar trench-gate structure to balance low on-resistance and fast switching performance. Its gate threshold voltage range (0.45–0.95 V) enables reliable turn-on with 1.8V/2.5V/3.3V microcontroller GPIOs, while the body diode exhibits VSD = 0.8–1.2 V at IS = 300 mA.
Designed for DC load switching rather than high-frequency PWM, it features Ciss = 40.8 pF and Qg = 0.9 nC at VGS = 4.5V, supporting efficient gate driving with minimal Miller effect. Thermal design relies on FR-4 PCB with 2 oz copper and minimum pad layout to achieve RθJA = 192 °C/W.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDSS | 30 V - Maximum drain-source blocking voltage for 5V–12V system rail protection |
| RDS(ON) | 460 mΩ @ VGS = 4.5V, ID = 200 mA - Enables <100 mW conduction loss at 0.5 A load current |
| VGS(TH) | 0.45–0.95 V - Ensures full enhancement with 1.8V logic-level drivers without level shifting |
| ID (max) | 1 A @ TA = +25°C - Supports sustained 500–800 mA loads on standard SOT23 PCB layouts |
| Qg | 0.9 nC - Allows fast turn-on with <1 µs delay using 10 Ω gate resistor and 3.3V MCU output |
| RθJA | 192 °C/W - Requires ≥1 inch² 2 oz copper pour to maintain TJ < 125°C at 0.8 A continuous |
Pinout & Package
Package: SOT23 - surface-mount plastic package with matte tin-annealed copper leadframe; moisture sensitivity level 1 per J-STD-020; UL 94V-0 rated molding compound; weight ≈ 0.009 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (Source) | Current return path for load current | Connected to ground or low-side reference; forms cathode of integrated body diode |
| Pin 2 (Gate) | Control terminal for channel conduction | ESD-protected input requiring ≤±8 V drive; low Ciss enables fast edge response |
| Pin 3 (Drain) | High-side connection to power rail or load | Carries full load current; exposed drain pad not present in SOT23 - thermal path via leads only |
Key Features
| Feature | Design Value |
|---|---|
| Logic-level gate drive | Operates fully enhanced down to VGS = 1.8 V, eliminating need for external level shifters in 1.8V/2.5V systems |
| ESD-protected gate | HBM rating ≥2 kV - reduces risk of handling damage during SMT assembly and board handling |
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTGB, and ESD stress per AEC specification |
| Green RoHS compliance | Lead-free, halogen-free, antimony-free - meets EU RoHS 3 (2015/863/EU) and IATF 16949 manufacturing requirements |
Applications
| Smartphone Power Management | USB-C Port Power Switching |
|---|---|
|
Use Scenario: Enabling/disabling VBUS power to peripheral devices during hot-plug detection and fault isolation. IC Role / Device Role / Timing Role: Low-side load switch controlling 5V VBUS path with fast turn-off (<25 ns fall time) to prevent backfeed during disconnect. Use Value: 460 mΩ RDS(ON) limits voltage drop to <230 mV at 500 mA, preserving USB-C voltage tolerance while minimizing self-heating on thin PCB traces. |
Use Scenario: Isolating downstream USB-C ports from main battery rail during sleep mode to reduce quiescent current leakage. IC Role / Device Role / Timing Role: High-efficiency DC load switch placed between battery and port controller, driven by PMIC enable signal. Use Value: Gate threshold of 0.45 V ensures robust turn-on with 0.8 V GPIO outputs from ultra-low-power PMICs, reducing standby current to sub-µA levels. |
| Automotive Body Control Module | Wearable Device Battery Protection |
|
Use Scenario: Controlling LED lighting circuits and sensor bias rails in door modules and mirror assemblies. IC Role / Device Role / Timing Role: AEC-Q101-qualified N-channel switch replacing mechanical relays for 12V load control with PWM dimming capability. Use Value: 30 V VDSS withstands automotive load-dump transients up to 28 V, and 150 °C max junction temperature supports under-hood operation. |
Use Scenario: Disconnecting rechargeable Li-ion battery from system during deep sleep or overtemperature shutdown. IC Role / Device Role / Timing Role: Reverse-polarity protected, low-RDS(ON) disconnect switch placed in battery positive path with thermal foldback. Use Value: 730 mΩ RDS(ON) @ VGS = 1.8 V allows direct control from wearables SoC GPIO, enabling battery cutoff without auxiliary LDO or driver IC. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar N-channel logic-level MOSFET applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| DMN3025LSD-13 | RDS(ON) = 25 mΩ @ VGS = 4.5V, but in larger SOT26 package; higher ID = 4.5 A | Requires more PCB area; suited for higher-current loads where thermal margin is critical | Select when >1 A continuous current or lower conduction loss is required; not pin-compatible |
| AO3400 | RDS(ON) = 44 mΩ @ VGS = 10V, but VGS(TH) = 0.8–1.8 V; no AEC-Q101 qualification | Lacks automotive qualification and 1.8V drive assurance; higher gate charge (Qg = 12 nC) | Acceptable for consumer-grade portable electronics where AEC-Q101 and ultra-low VGS are not mandatory |
Compared with DMN3732UQ-7, DMN3025LSD-13 delivers significantly lower RDS(ON) but sacrifices SOT23 footprint and cost efficiency, while AO3400 offers higher current capability at the expense of gate drive compatibility and automotive reliability validation.
Availability
DMN3732UQ-7 is available at Aetrix Electronics and suitable for smartphone power management, USB-C port switching, and automotive body control modules requiring stable component supply across production lifecycles.
Supply support for DMN3732UQ-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, headquartered in Plano, Texas, with design, manufacturing, and sales operations across Asia, Europe, and the Americas.
The DMN3732UQ belongs to Diodes' logic-level MOSFET product line, engineered specifically for space-constrained, low-voltage DC load switching in portable and automotive electronics where gate drive simplicity and thermal efficiency are prioritized.
FAQ
Is DMN3732UQ-7 suitable for reverse polarity protection?
No - DMN3732UQ-7 is an N-channel MOSFET configured for low-side switching only. Its body diode conducts from source to drain, making it unsuitable for high-side reverse polarity protection without external circuitry. For that function, a P-channel device like DMG2305UVT or dedicated protection IC is required.
What is the maximum safe operating frequency for DMN3732UQ-7 in PWM applications?
While not characterized for high-frequency switching, DMN3732UQ-7 supports PWM frequencies up to 100 kHz with appropriate gate drive strength. Its tF = 20 ns and Qg = 0.9 nC allow clean edges at 3.3V drive with ≤10 Ω series resistance, but conduction losses dominate above 50 kHz due to RDS(ON)-limited efficiency.
Does DMN3732UQ-7 require a gate resistor in typical load-switch applications?
Yes - a 10–100 Ω gate resistor is recommended to dampen ringing caused by PCB trace inductance and gate capacitance interaction. Without it, overshoot exceeding ±8 V VGS rating may occur during fast GPIO transitions, risking long-term gate oxide degradation.
Can DMN3732UQ-7 be used in parallel for higher current handling?
Not recommended - SOT23-packaged MOSFETs lack thermal coupling and matching characteristics needed for stable current sharing. Parameter variation in VGS(TH) and RDS(ON) causes unequal current distribution, leading to thermal runaway in one device. Use a single higher-current part instead.
DMN3732UQ-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- FET Type:
- N-Channel
- Technology:
- MOSFET (Metal Oxide)
- Drain to Source Voltage (Vdss):
- 30 V
- Current - Continuous Drain (Id) @ 25°C:
- 1A (Ta)
- Drive Voltage (Max Rds On, Min Rds On):
- 1.8V, 4.5V
- Rds On (Max) @ Id, Vgs:
- 460mOhm @ 200mA, 4.5V
- Vgs(th) (Max) @ Id:
- 950mV @ 250µA
- Gate Charge (Qg) (Max) @ Vgs:
- 0.9 nC @ 4.5 V
- Vgs (Max):
- ±8V
- Input Capacitance (Ciss) (Max) @ Vds:
- 40.8 pF @ 25 V
- FET Feature:
- -
- Power Dissipation (Max):
- 420mW (Ta)
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
DMN3732UQ-7 FAQ
1.How can I place an order for DMN3732UQ-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for DMN3732UQ-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 DMN3732UQ-7 reliable?
The price and inventory of DMN3732UQ-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DMN3732UQ-7 is usually 5 days.
3.What payment methods are accepted for DMN3732UQ-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DMN3732UQ-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DMN3732UQ-7?
DMN3732UQ-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DMN3732UQ-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 DMN3732UQ-7?
For technical support, including DMN3732UQ-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DMN3732UQ-7 requirements.
6.How does Aetrix verify that DMN3732UQ-7 is sourced from the original manufacturer or authorized distributors?
All DMN3732UQ-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 DMN3732UQ-7 meets industry standards.
7.What is the process for return or replacement of DMN3732UQ-7?
All DMN3732UQ-7 units undergo pre-shipment inspection (PSI). If there is an issue with DMN3732UQ-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 DMN3732UQ-7 part is unused and in its original packaging.
Return procedure for DMN3732UQ-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DMN3732UQ-7 Tags
-
BSZ180P03NS3EGATMA1
Infineon Technologies
-
SIRA14DP-T1-GE3
Vishay Siliconix
-
AO4419
Alpha & Omega Semiconductor Inc.
-
SISA14BDN-T1-GE3
Vishay Siliconix
-
PSMN9R5-30YLC,115
Nexperia USA Inc.
-
BUK9Y21-40E,115
Nexperia USA Inc.
-
RTQ035N03HZGTR
Rohm Semiconductor
-
FDMS7680
onsemi
-
RQ3E180BNTB
Rohm Semiconductor
-
STL6N2VH5
STMicroelectronics
-
DMPH4029LFGQ-7
Diodes Incorporated
-
DMT6015LSS-13
Diodes Incorporated
Tech Hub
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…
Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…
Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…
Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…
A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…
