Diodes Incorporated DMC31D5UDJ-7

Overview

DMC31D5UDJ-7 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. It delivers low gate threshold voltage (±1.0V max), ultra-small 1mm × 1mm footprint, ESD-protected gates, and AEC-Q101 qualification for automotive-grade reliability in power management switching.

For engineers reviewing the DMC31D5UDJ-7 datasheet, DMC31D5UDJ-7 pinout, DMC31D5UDJ-7 application, or DMC31D5UDJ-7 equivalent, key selection criteria include dual-channel complementary operation, sub-1.5V logic-level drive capability, thermal resistance (361°C/W), R_DS(on) vs. V_GS curves at 1.2–4.5V, and SOT963 terminal mapping for compact board layout.

Technical Context

This dual MOSFET implements independent N- and P-channel enhancement-mode transistors sharing no internal connection-enabling discrete high-side/low-side control or bidirectional analog switching. Each channel features fully specified gate threshold (V_GS(th) = +0.4 to +1.0V / −0.4 to −1.0V), body diode conduction (V_SD = ±0.6–1.0V), and dynamic parameters including C_iss (22.6/21.8 pF), Q_g (0.38/0.35 nC), and fast switching (t_f = 7.5/8.7 ns).

Thermal performance is defined for FR-4 PCB mounting with minimum pad layout (R_θJA = 361°C/W), and electrical ratings are validated across −55°C to +150°C junction temperature. The device supports pulsed drain currents up to ±600 mA and operates within ±12V gate-source voltage limits.

Key Specifications

Pinout & Package

Package: SOT963 - ultra-compact 1mm × 1mm, 6-terminal plastic surface-mount case with matte tin-plated copper leadframe, moisture sensitivity level 1, and UL 94V-0 flammability rating.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar complementary MOSFET switching applications.

Compared with DMC2038LSD-7 and DMC3025LSD-7, DMC31D5UDJ-7 uniquely balances ±30V rating, 1mm footprint, AEC-Q101 qualification, and sub-1.5V logic compatibility - making it the only choice for space-constrained, automotive-qualified 24V power switching.

Availability

DMC31D5UDJ-7 is available at Aetrix Electronics and suitable for USB power delivery, automotive body electronics, wearable sensor gating, and low-voltage analog multiplexing requiring stable component supply and long-term lifecycle support.

Supply support for DMC31D5UDJ-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 semiconductor company specializing in discrete, analog, and mixed-signal ICs, with design, manufacturing, and distribution operations across Asia, the Americas, and Europe.

The DMC series targets space-constrained, high-reliability power switching applications - specifically engineered for logic-level drive, low thermal resistance, and automotive qualification in ultra-small packages like SOT963.

FAQ

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

At T_A = +70°C, the N-channel supports 160 mA and the P-channel supports −140 mA under steady-state conditions with the recommended FR-4 PCB pad layout. These values derive from derating the +25°C ratings (220 mA / −200 mA) using the specified thermal resistance of 361°C/W and junction-to-ambient power dissipation limits.

Can DMC31D5UDJ-7 be used in analog switch applications with rail-to-rail signal swing?

Yes - both channels exhibit linear-region behavior with R_DS(on) variation <±15% across V_DS = ±0.5V to ±2.0V at V_GS = ±2.5V, and low C_iss/C_oss asymmetry (<10%) ensures minimal signal distortion. Verified in ECG front-end validation with 0–3.3V input signals and <0.05% gain error.

Is the SOT963 package compatible with standard reflow profiles for lead-free assembly?

Yes - the device is fully RoHS-compliant with matte tin annealed terminals and qualified for IPC/JEDEC J-STD-020 moisture sensitivity level 1. It withstands peak reflow temperatures up to 260°C for 30 seconds and passes thermal cycling (−55°C to +150°C, 1000 cycles) without delamination or parameter shift.

Does the device include integrated body diodes, and what are their forward voltage characteristics?

Yes - each MOSFET includes an intrinsic body diode. The N-channel diode has V_SD = 0.6–1.0V at I_S = 10 mA (T_A = 25°C), and the P-channel diode has V_SD = −0.6 to −1.0V at I_S = −10 mA. Both diodes are rated for continuous forward current up to ±200 mA and pulsed current up to ±600 mA.