Diodes Incorporated DXT790AP5-13

Overview

DXT790AP5-13 from Diodes Incorporated is a PNP bipolar junction transistor in POWERDI5 package, rated for -40V V_CEO, -3A continuous collector current, and 3.2W power dissipation at 25°C with 50mm×50mm 2oz copper PCB mounting. It delivers high DC current gain (h_FE = 800 min at I_C = -10mA) and low saturation voltage (V_CE(sat) = -170mV @ I_C = -0.5A, I_B = -5mA), enabling efficient switching in automotive load control circuits.

For engineers reviewing the DXT790AP5-13 datasheet, DXT790AP5-13 pinout, DXT790AP5-13 application, or DXT790AP5-13 equivalent, key selection criteria include its AEC-Q101 qualification, ultra-low profile (1.1mm max height), 43% smaller footprint than SOT223, thermal resistance of 39°C/W (junction-to-ambient, 50mm×50mm 2oz Cu), and verified performance across -55°C to +150°C operating range.

Technical Context

This PNP transistor operates as a high-gain, medium-power switching device with robust breakdown ratings: -50V V_CBO, -40V V_CEO, and -6V V_EBO. Its safe operating area supports pulsed currents up to -6A (I_CM) and maintains stable h_FE across temperature (80–800 range at I_C = -10mA to -3A).

Thermal design is enabled by the exposed collector pad and low R_θJL of 8.9°C/W (junction-to-lead), allowing effective heat transfer to PCB copper. Switching performance includes 35ns turn-on and 600ns turn-off times under defined test conditions (I_C = -500mA, V_CC = -10V).

Key Specifications

Pinout & Package

The DXT790AP5-13 uses the POWERDI5 surface-mount package with an exposed collector pad for thermal and electrical connection. Dimensions: 4.0mm × 6.5mm × 1.1mm (L × W × H), weight ≈ 0.093g. Molded green compound meets UL 94V-0 and J-STD-020 Level 1 moisture sensitivity.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar PNP high-gain transistor applications.

Compared with ZXTN25050DFH and MJD2955T4G, the DXT790AP5-13 uniquely balances automotive qualification, ultra-compact size, and 3.2W dissipation in a thermally optimized surface-mount package-making it optimal for space- and reliability-critical 12V/24V switching where SOT223 or TO-220 are impractical.

Availability

DXT790AP5-13 is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC outputs, and LED lighting control requiring stable component supply, AEC-Q101 compliance, and high-volume tape-and-reel delivery (5,000 units per 13-inch reel).

Supply support for DXT790AP5-13 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 consumer markets with ISO/TS 16949 and IATF 16949 certification.

The DXT790AP5 belongs to Diodes' POWERDI® transistor family, engineered for high-current, low-profile switching in harsh-environment applications where thermal efficiency, AEC-Q101 validation, and PCB area savings are critical design priorities.

FAQ

What is the recommended PCB pad layout for DXT790AP5-13?

The manufacturer specifies a minimum recommended pad (MRP) layout per AP02001, with a 3.05mm × 5.30mm exposed collector pad connected to ≥25mm² of 1oz copper. For full 3.2W rating, use 50mm × 50mm 2oz copper; thermal vias under the pad improve heat transfer to inner layers.

Does DXT790AP5-13 require a base resistor, and how is it calculated?

Yes-a series base resistor is mandatory to limit I_B and ensure saturation. For I_C = -3A and h_FE = 150 (min at that current), I_B ≥ -20mA is required. With V_BE(sat) = -1.15V and MCU GPIO = 3.3V, R_B ≤ (3.3V − 1.15V)/0.02A = 107Ω; 100Ω is standard practice.

Can DXT790AP5-13 be used in linear regulator applications?

No-it is optimized for switching operation, not linear regulation. Its SOA curve shows limited safe operating area above 10V V_CE at high current, and thermal resistance increases sharply beyond 25°C ambient without forced cooling. Use dedicated LDOs or NPN pass transistors instead.

Is the exposed collector pad electrically isolated from other terminals?

No-the exposed collector pad is electrically and thermally connected to the collector terminal. It must be routed to the same net as the collector pin (Pin 1) and tied to the appropriate ground or supply plane depending on circuit topology (e.g., high-side switch configuration).