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Home > Products > Discrete Semiconductor Products > Transistors > FETs, MOSFETs > FET, MOSFET Arrays

Diodes Incorporated DMC31D5UDJ-7B

Name: DMC31D5UDJ-7B
Brand: Diodes Incorporated
SKU: DMC31D5UDJ-7B
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: DMC31D5UDJ-7B

Manufacturer:: Diodes Incorporated

Category:: FET, MOSFET Arrays

Package:: SOT-963

Datasheet:: DMC31D5UDJ-7B.pdf

Description:: MOSFET N/P-CH 30V 0.22A SOT963

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Product details

Overview

DMC31D5UDJ-7B from Diodes Incorporated is a complementary pair enhancement-mode MOSFET in a single SOT963 package, integrating one N-channel (30V, 1.5Ω @ 4.5V) and one P-channel (-30V, 5Ω @ -4.5V) device for bidirectional switching. It delivers low gate threshold voltage (±1.0V max), fast switching (t_D(on) = 3.2/3.5 ns), and ultra-small 1mm × 1mm footprint - ideal for space-constrained power management in portable USB interface circuits.

For engineers reviewing the DMC31D5UDJ-7B datasheet, DMC31D5UDJ-7B pinout, DMC31D5UDJ-7B application, or DMC31D5UDJ-7B equivalent, key selection criteria include dual-channel R_DS(ON) at low V_GS, AEC-Q101 qualification, ESD-protected gate, and thermal resistance (R_θJA = 361°C/W) under FR-4 PCB mounting conditions.

Technical Context

This dual MOSFET implements complementary logic-level switching with matched thermal characteristics and tightly controlled V_GS(th) (N: 0.4–1.0V; P: −0.4 to −1.0V), enabling robust operation from 1.2V to 4.5V drive. Its integrated body diodes support bidirectional current flow with V_SD = ±0.6–1.0V at ±10mA.

The device uses a common-source configuration with isolated drain terminals (S1/D1/G1 and S2/D2/G2), optimized for low-input-capacitance (C_iss = 22.6/21.8 pF) and minimal gate charge (Q_g = 0.38/0.35 nC), supporting high-frequency (>1 MHz) PWM control in compact DC-DC and load-switching topologies.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DSS	30V (N-ch) / −30V (P-ch): Supports rail-to-rail switching across 3.3V and 5V systems without avalanche stress.
R_DS(ON) @ V_GS = ±4.5V	1.5Ω (N) / 5Ω (P): Enables ≥220mA continuous N-ch and ≥200mA P-ch conduction with <100mW I²R loss at rated ID.
V_GS(th)	0.4–1.0V (N) / −0.4 to −1.0V (P): Ensures reliable turn-on from 1.8V GPIOs and battery-backed logic rails.
Q_g	0.38 nC (N) / 0.35 nC (P): Reduces gate-drive power and enables <10ns switching transitions with 2Ω source impedance.
C_iss	22.6 pF (N) / 21.8 pF (P): Minimizes Miller-induced shoot-through risk in half-bridge configurations.
P_D	350 mW: Sustains full-rated current in ambient up to +70°C on standard FR-4 PCB with minimum pad layout.
T_J Range	−55°C to +150°C: Validated for automotive cabin and industrial control environments per AEC-Q101.

Pinout & Package

Package: SOT963 - ultra-compact 1mm × 1mm, 6-terminal molded plastic case with matte tin-plated copper leadframe (Moisture Sensitivity Level 1).

Pin/Terminal	Circuit Role	Design Meaning
S1	N-channel source	Common source node for N-MOS; connects to ground or low-side return path in H-bridge/load switch.
G1	N-channel gate	Logic-level input for N-MOS; requires no level-shifting when driven by 1.8V–4.5V microcontrollers.
D1	N-channel drain	High-side output node for N-MOS; routes switched power to load or next stage.
S2	P-channel source	Common source node for P-MOS; typically tied to V_CC in high-side switch applications.
G2	P-channel gate	Inverted logic input for P-MOS; pulled low to enable conduction; compatible with open-drain drivers.
D2	P-channel drain	Low-side output node for P-MOS; used for reverse-current blocking or complementary switching paths.

Key Features

Feature	Design Value
Complementary dual-channel integration	Single SOT963 package replaces discrete N+P MOSFET pairs, reducing PCB area by >60% vs. SOT-363 solutions.
Ultra-low V_GS(th)	Max ±1.0V threshold ensures guaranteed turn-on with 1.2V–1.8V supply rails - critical for Li-ion battery-powered systems.
ESD-protected gate	Withstands ≥2kV HBM per JESD22-A114, eliminating need for external gate protection in handheld and wearables designs.
AEC-Q101 qualified	Validated for automotive temperature cycling, humidity bias, and mechanical shock - suitable for infotainment and body electronics.
Green packaging	Halogen- and antimony-free (<900ppm Br/Cl, <1000ppm Sb), fully RoHS-compliant, UL 94V-0 rated molding compound.

Applications

USB Port Power Switching

Low-Voltage Load Sharing

Use Scenario: Selective power enable/disable for USB 2.0 downstream ports in portable hubs or docking stations.

IC Role / Device Role / Timing Role: Dual-channel load switch controlling VBUS (N-ch) and VCONN (P-ch) with coordinated gate timing to prevent backfeed.

Use Value: Eliminates cross-conduction risk during hot-plug events via matched t_D(on)/t_D(off) and <1.0V V_GS(th) margin.

Use Scenario: Seamless battery-to-system power handoff in coin-cell–powered IoT sensors during wake-up transitions.

IC Role / Device Role / Timing Role: Complementary pair acts as OR-ing controller, with N-ch sourcing main rail and P-ch blocking reverse current.

Use Value: Achieves <100nA quiescent current in off-state and <5mΩ effective R_DS(ON) in parallel conduction mode.

GPIO-Controlled Signal Isolation

Automotive Interior Lighting Dimming

Use Scenario: Bidirectional analog signal gating between MCU peripherals and external sensors in medical wearables.

IC Role / Device Role / Timing Role: N/P pair configured as transmission gate, with gates driven by complementary logic to minimize on-resistance variation.

Use Value: Maintains <2Ω R_DS(ON) flatness across 0–3.3V signal swing due to symmetric V_GS(th) distribution and low C_oss.

Use Scenario: PWM-controlled LED current regulation in automotive map lights and courtesy lamps.

IC Role / Device Role / Timing Role: P-ch high-side switch modulates LED anode voltage; N-ch handles feedback sensing or auxiliary driver functions.

Use Value: Sustains 150°C junction temperature with 350mW P_D rating and AEC-Q101 validation for under-hood proximity.

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 V_DSS = ±20V; lower R_DS(ON) (0.75Ω/2.5Ω @ ±4.5V); not AEC-Q101 qualified.	Better for 1.8V/3.3V-only systems with tighter R_DS(ON) requirements; unsuitable for 5V rail or automotive use.	Select when board space and low-voltage drive are prioritized over voltage headroom and automotive compliance.
FDMA1023NZ	WLCSP-6 package (0.9mm × 1.2mm); ±30V rating; R_DS(ON) = 1.8Ω/6.5Ω @ ±4.5V; Q_g = 0.45/0.42 nC; AEC-Q101 qualified.	Smaller footprint but higher R_DS(ON) and gate charge; requires tighter assembly process control due to WLCSP reflow profile.	Select when absolute minimum size is mandatory and thermal derating can accommodate higher conduction loss.

Compared with DMC2038UVT-7 and FDMA1023NZ, DMC31D5UDJ-7B uniquely balances 30V robustness, AEC-Q101 qualification, and sub-1V gate threshold - making it optimal for cost-sensitive automotive and industrial 3.3V/5V power switches where reliability and low-voltage compatibility are co-prioritized.

Availability

DMC31D5UDJ-7B is available at Aetrix Electronics and suitable for USB power delivery, battery-powered IoT sensor nodes, and automotive interior lighting requiring stable component supply and long-term lifecycle assurance.

Supply support for DMC31D5UDJ-7B 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-efficiency power management, signal integrity, and protection solutions for consumer, industrial, and automotive markets.

DMC31D5UDJ-7B belongs to Diodes' logic-level complementary MOSFET product line, engineered specifically for space-constrained, low-voltage power switching in portable and automotive electronics where gate drive simplicity and thermal resilience are essential.

FAQ

What is the maximum continuous drain current for each channel at +70°C ambient?

The N-channel supports 160mA and the P-channel supports −140mA at T_A = +70°C with device mounted on FR-4 PCB using minimum recommended pad layout. These values reflect thermal derating from the +25°C ratings (220mA/−200mA) due to R_θJA = 361°C/W and power dissipation limits.

Does DMC31D5UDJ-7B support 1.2V gate drive for both channels?

Yes - the N-channel has V_GS(th) as low as 0.4V and the P-channel as low as −0.4V, with guaranteed turn-on at 1.2V drive (V_GS = 1.2V for N, −1.2V for P). R_DS(ON) rises to 2.3Ω (N) and 5.1Ω (P) at this voltage, sufficient for ≤50mA loads.

How is the SOT963 package marked for polarity identification?

The top-marking "U1" identifies the DMC31D5UDJ series. Polarity is confirmed by the SOT963 outline: Pin 1 (S1) is bottom-left when the marking is upright; pins follow clockwise order S1–G1–D1–S2–G2–D2. The datasheet's top-view schematic shows G1 adjacent to D1 and G2 adjacent to D2.

Is the body diode in each MOSFET rated for continuous forward conduction?

Yes - the N-channel supports 200mA and the P-channel supports −200mA of continuous body diode forward current (I_S) at T_A = +25°C. Diode forward voltage is 0.6–1.0V (N) and −0.6 to −1.0V (P) at ±10mA, enabling use in synchronous rectification or flyback catch paths.

DMC31D5UDJ-7B 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

FET Feature:: Logic Level Gate

Drain to Source Voltage (Vdss):: 30V

Current - Continuous Drain (Id) @ 25°C:: 220mA, 200mA

Rds On (Max) @ Id, Vgs:: 1.5Ohm @ 100mA, 4.5V

Vgs(th) (Max) @ Id:: 1V @ 250µA

Gate Charge (Qg) (Max) @ Vgs:: 0.38nC @ 4.5V

Input Capacitance (Ciss) (Max) @ Vds:: 22.6pF @ 15V

Power - Max:: 350mW

Operating Temperature:: -55°C ~ 150°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: SOT-963

DMC31D5UDJ-7B FAQ

1.How can I place an order for DMC31D5UDJ-7B through Aetrix?

Please submit a Request for Quotation (RFQ) for DMC31D5UDJ-7B 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 DMC31D5UDJ-7B reliable?

The price and inventory of DMC31D5UDJ-7B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DMC31D5UDJ-7B is usually 5 days.

3.What payment methods are accepted for DMC31D5UDJ-7B?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DMC31D5UDJ-7B transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for DMC31D5UDJ-7B?

DMC31D5UDJ-7B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your DMC31D5UDJ-7B 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 DMC31D5UDJ-7B?

For technical support, including DMC31D5UDJ-7B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DMC31D5UDJ-7B requirements.

6.How does Aetrix verify that DMC31D5UDJ-7B is sourced from the original manufacturer or authorized distributors?

All DMC31D5UDJ-7B 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 DMC31D5UDJ-7B meets industry standards.

7.What is the process for return or replacement of DMC31D5UDJ-7B?

All DMC31D5UDJ-7B units undergo pre-shipment inspection (PSI). If there is an issue with DMC31D5UDJ-7B, 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 DMC31D5UDJ-7B part is unused and in its original packaging.

Return procedure for DMC31D5UDJ-7B:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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