Diodes Incorporated DMP68D1LQ-7

Overview

DMP68D1LQ-7 from Diodes Incorporated is a P-channel enhancement-mode MOSFET rated for -60V V_DSS, 7.5Ω R_DS(ON) at V_GS = -10V, and -206mA continuous drain current at +25°C. It is AEC-Q101 qualified, PPAP-capable, and designed for automotive motor control, power management, and backlighting circuits where low leakage and fast switching are critical.

For engineers reviewing the DMP68D1LQ-7 datasheet, DMP68D1LQ-7 pinout, DMP68D1LQ-7 application, or DMP68D1LQ-7 equivalent, key selection criteria include its -60V breakdown rating, 7.5Ω on-resistance at -10V gate drive, AEC-Q101 qualification, SOT23 package thermal resistance (263°C/W), and ESD protection - all essential for reliable operation in automotive power switches.

Technical Context

This MOSFET operates as a high-side load switch in automotive subsystems, leveraging its negative threshold voltage (-0.8V to -2.1V) and low input capacitance (42pF C_iss) to enable efficient gate driving with minimal Miller effect. Its body diode supports reverse-current paths in H-bridge or buck configurations.

Thermal performance is defined by two power dissipation ratings: 0.5W (R_θJA = 263°C/W) on standard FR-4 and 0.6W (R_θJA = 202°C/W) with enhanced copper area - confirming layout-dependent derating for sustained operation up to +150°C junction temperature.

Key Specifications

Pinout & Package

Package: SOT23 - Surface-mount plastic package with matte tin–annealed terminals, moisture sensitivity level 1, and UL 94V-0 flammability rating. Weight: 0.008g.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar P-channel MOSFET applications.

Compared with DMN601WK-7 and AO3401, DMP68D1LQ-7 trades higher R_DS(ON) for guaranteed AEC-Q101 reliability and lower gate charge (0.6nC), making it optimal for safety-critical, low-power automotive switches where qualification and ESD robustness outweigh raw efficiency.

Availability

DMP68D1LQ-7 is available at Aetrix Electronics and suitable for automotive motor controls, power-management functions, and backlighting requiring stable component supply across production lifecycles.

Supply support for DMP68D1LQ-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, specializing in high-reliability components for automotive, industrial, and computing markets.

The DMP68D1LQ belongs to Diodes' AEC-Q101-qualified power MOSFET product line, engineered specifically for automotive subsystems demanding robust transient immunity, low leakage, and validated long-term reliability under thermal cycling and humidity stress.

FAQ

What is the maximum gate-source voltage rating for DMP68D1LQ-7?

The absolute maximum V_GS is ±20V, as specified in the Maximum Ratings table. Exceeding this risks permanent gate oxide damage. In practice, gate drive should be limited to -10V for optimal R_DS(ON) and -5V for logic-level compatibility, both well within safe operating limits.

Is DMP68D1LQ-7 suitable for bidirectional current flow?

No - it is a unidirectional P-channel MOSFET with an intrinsic body diode oriented from source to drain. While the diode conducts in the reverse direction (source-to-drain), the channel only conducts when V_GS < V_GS(TH). True bidirectional blocking requires external circuitry or back-to-back MOSFET configuration.

How does the SOT23 package affect thermal performance in continuous operation?

With R_θJA = 263°C/W on standard FR-4, the junction temperature rises ~68°C above ambient at 0.26W dissipation. For continuous -206mA operation at 7.5Ω, power loss is ~320mW - exceeding the 0.5W rating. Derating or enhanced copper area (R_θJA = 202°C/W) is required for sustained use.

Does DMP68D1LQ-7 require external gate pull-up or pull-down resistors?

Yes - because it is a P-channel device, a pull-up resistor from gate to source is required to ensure default-off state when gate drive is floating or inactive. Typical values range from 10kΩ to 100kΩ, balancing leakage suppression and switching speed.