Diodes Incorporated DMP32D9UFA-7B

Overview

DMP32D9UFA-7B from Diodes Incorporated is a 30V P-channel enhancement-mode MOSFET in a 0.8mm × 0.6mm X2-DFN0806-3 package, featuring 5Ω R_DS(ON) at V_GS = −4.5V, −0.21A continuous drain current, and 1.0V max gate threshold voltage. It serves as a low-voltage load switch in space-constrained power-management circuits such as portable battery-powered sensor nodes.

For engineers reviewing the DMP32D9UFA-7B datasheet, DMP32D9UFA-7B pinout, DMP32D9UFA-7B application, or DMP32D9UFA-7B equivalent, key selection criteria include ultra-low gate threshold for 1.8V logic compatibility, sub-0.4mm profile for thin-profile wearable designs, and verified ESD protection on gate terminals.

Technical Context

This MOSFET employs a trench-gate silicon process optimized for low V_GS(TH) (−0.4V to −1.0V) and stable R_DS(ON) across temperature. Its −30V V_DSS rating supports operation in 24V industrial rails with margin, while 357°C/W R_θJA reflects thermal performance on minimal FR-4 pad layouts.

The device integrates an intrinsic body diode with −0.6V typical V_SD at −10mA, enabling bidirectional current handling in analog switch configurations. Gate charge parameters (Q_g = 0.35nC, Q_gd = 0.1nC) confirm suitability for high-frequency switching up to 1MHz in DC-DC enable paths.

Key Specifications

Pinout & Package

Package: X2-DFN0806-3, 3-terminal leadless plastic package with exposed drain pad; 0.4mm max height, NiPdAu-plated copper leadframe, JEDEC-compliant moisture sensitivity Level 1.

Key Features

Applications

Equivalent & Alternatives

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

Compared with DMN3026LSD-13 and AO3401, DMP32D9UFA-7B uniquely delivers 1.0V V_GS(TH) in a 0.48mm² footprint with certified ESD protection-enabling direct GPIO control and high-yield manufacturing in space- and voltage-constrained edge devices.

Availability

DMP32D9UFA-7B is available at Aetrix Electronics and suitable for wearable health sensor nodes, USB-C power path control, and industrial IoT edge nodes requiring stable component supply with guaranteed long-term sourcing.

Supply support for DMP32D9UFA-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 analog ICs, headquartered in Plano, Texas, with design centers across Asia and manufacturing in Taiwan, China, and Malaysia.

DMP32D9UFA-7B belongs to Diodes' X2-DFN ultra-miniature MOSFET product line, engineered specifically for space-constrained, low-voltage power-switching applications in portable and battery-operated electronics.

FAQ

What is the maximum operating junction temperature for DMP32D9UFA-7B?

The absolute maximum junction temperature is +150°C, validated per JEDEC JESD22-A104. At this temperature, R_DS(ON) increases by 1.8× versus room temperature (Figure 6), limiting continuous current to −0.12A on standard FR-4. Derating curves in Figure 5 support thermal design for sustained operation at elevated ambient temperatures.

Can DMP32D9UFA-7B be used in automotive applications?

DMP32D9UFA-7B is not AEC-Q101 qualified. While it meets RoHS and halogen-free standards, Diodes explicitly states that automotive-grade variants require separate qualification (PPAP, IATF 16949 manufacturing, AEC-Q101 testing). For automotive use, contact Diodes' automotive team for qualified alternatives like DMP32D9UFAQ-7B.

Is the drain pad electrically isolated from other terminals?

No-the exposed drain pad is internally connected to Pin 3 (Drain) and must be soldered to a PCB copper pour tied to the drain net. This pad serves dual functions: electrical connection and thermal conduction. The datasheet's "Bottom View" diagram confirms direct metal-to-metal linkage between the pad and Drain terminal.

What is the recommended PCB pad layout for thermal performance?

Diodes specifies a minimum 1.0mm × 1.0mm thermal pad with 0.35mm clearance to adjacent traces (X2-DFN0806-3 suggested layout). Use 4–6 thermal vias (0.3mm diameter, 0.8mm pitch) filled with solder to inner ground planes. This configuration achieves the rated 357°C/W R_θJA; reducing pad area increases thermal resistance by up to 40%.