Diodes Incorporated DMC3021LSDQ-13

Overview

DMC3021LSDQ from Diodes Incorporated is a complementary pair enhancement-mode MOSFET in a single SO-8 package, integrating an N-channel (30V, 21mΩ @ 10V) and P-channel (−30V, 39mΩ @ −10V) device for bidirectional power control. It delivers 8.5A/−7A continuous drain current at 25°C, supports fast switching (t_D(on) = 5.0ns / 10.1ns), and is AEC-Q101 qualified for automotive power management.

For engineers reviewing the DMC3021LSDQ datasheet, DMC3021LSDQ pinout, DMC3021LSDQ application, or DMC3021LSDQ equivalent, this dual-channel MOSFET is selected for compact load switching, H-bridge motor drivers, and battery protection circuits where low R_DS(on), tight thermal resistance (50°C/W), and complementary gate thresholds are critical.

Technical Context

This device implements two independent enhancement-mode MOSFETs-Q2 (N-channel) and Q1 (P-channel)-with matched thermal characteristics and shared SO-8 thermal pad layout. Each channel features gate threshold voltages of +1.45V (Q2) and −1.7V (Q1), enabling robust logic-level drive compatibility with 3.3V/5V controllers.

Dynamic performance is defined by low input capacitance (C_iss = 767pF / 1002pF), fast turn-off (t_D(off) = 26.3ns / 50.1ns), and tightly controlled gate charge (Q_g = 16.1nC / 21.1nC at ±10V), supporting high-frequency DC-DC and PWM applications up to 1MHz.

Key Specifications

Pinout & Package

Package: SO-8 surface-mount with exposed thermal pad; molded green compound (UL 94V-0), moisture sensitivity level 1, matte tin-plated copper lead frame.

Key Features

Applications

Equivalent & Alternatives

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

Compared with DMC2038LSDQ-13 and Si7852DP-T1-GE3, DMC3021LSDQ uniquely delivers balanced 8.5A/−7A capability, lowest R_DS(on) in its class, and true monolithic complementarity-reducing component count, layout risk, and thermal coupling uncertainty in safety-critical automotive power stages.

Availability

DMC3021LSDQ is available at Aetrix Electronics and suitable for automotive body control modules, USB-C power delivery systems, H-bridge motor drivers, and battery protection circuits requiring stable component supply and AEC-Q101 compliance.

Supply support for DMC3021LSDQ 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 power management and signal integrity solutions for automotive, industrial, and consumer markets.

The DMC series targets space-constrained power switching applications, with DMC3021LSDQ specifically engineered to replace discrete complementary MOSFET pairs in AEC-Q101-compliant automotive subsystems while maintaining logic-level drive compatibility and thermal efficiency.

FAQ

What is the maximum junction temperature for continuous operation?

The DMC3021LSDQ has an operating junction temperature range of −55°C to +150°C. At ambient temperatures up to +85°C, it sustains full-rated current (8.5A/−7A) with proper PCB thermal management per AP02001 layout guidelines. Derating begins above +85°C ambient, reaching 0A at +150°C junction.

Can this device be driven directly by a 3.3V microcontroller GPIO?

Yes. The N-channel gate threshold is +1.45V (typical), and the P-channel threshold is −1.7V (typical), both fully compatible with 3.3V logic levels. With 3.3V applied to G2 and −3.3V referenced to S1 on G1, both devices achieve R_DS(on) ≤ 45mΩ and ≤ 75mΩ respectively, sufficient for most load-switching applications.

Is the thermal pad electrically isolated or connected to a specific terminal?

The exposed thermal pad (Pins 7 and 8) is electrically connected to the N-channel source (Pin 4) and P-channel drain (Pin 3) through internal bonding. It must be soldered to a PCB ground plane for thermal performance but introduces a common-node constraint: S2 and D1 share the pad net, limiting floating-source configurations.

Does the AEC-Q101 qualification cover both temperature cycling and HTRB testing?

Yes. Per Diodes Incorporated's quality documentation, AEC-Q101 qualification for DMC3021LSDQ includes temperature cycling (−55°C to +150°C, 1000 cycles), high-temperature reverse bias (HTRB at +150°C, 1000 hours), and unbiased highly accelerated stress test (UHAST), all performed per JESD22-A104, A108, and A110 standards.