Diodes Incorporated SDT15H50P5-7

Overview

SDT15H50P5 from Diodes Incorporated is a 15A, 50V trench Schottky barrier rectifier in PowerDI5 package, featuring 0.47V max forward voltage at 15A/125°C and 0.5mA max reverse leakage at 50V/125°C. It serves as a high-efficiency freewheel or output rectifier in compact DC/DC converters and AC/DC adapters.

For engineers reviewing the SDT15H50P5 datasheet, SDT15H50P5 pinout, SDT15H50P5 application, or SDT15H50P5 equivalent, key selection criteria include thermal resistance (RθJC = 2°C/W with heatsink), soft-switching behavior, +150°C junction rating, and RoHS-compliant matte tin terminations on a green molding compound.

Technical Context

This Schottky rectifier uses trench MOS structure to reduce forward voltage while maintaining low leakage across temperature. Its 0.39V typical VF at 10A/25°C and 0.44V at 15A/25°C enable high-conversion efficiency in low-voltage, high-current outputs.

The device achieves stable IR performance up to 150°C (0.5mA max at VR=50V), supported by RθJA = 10°C/W on aluminum heatsink PCB. Pin configuration enables low-inductance layout with direct cathode-to-ground thermal path via Pin 2 and Pin 3.

Key Specifications

Pinout & Package

PowerDI5 is a 3-terminal surface-mount package with exposed cathode thermal pad. Pins are arranged linearly: Pin 1 (Anode), Pin 2 (Cathode), Pin 3 (Cathode). Cathode terminals are internally tied and electrically common, enabling dual-path current conduction and low-inductance layout.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar Schottky rectifier applications.

Compared with VS-15BQ040-M3/45 and SB1550, SDT15H50P5 delivers lowest VF and smallest thermal resistance in surface-mount form, enabling higher power density and lower system BOM cost in new 12–24V DC/DC designs.

Availability

SDT15H50P5 is available at Aetrix Electronics and suitable for DC/DC converters, AC/DC adapters, automotive body control modules, and industrial PLC power rails requiring stable component supply and long-term lifecycle support.

Supply support for SDT15H50P5 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 China, Taiwan, and the US.

The PowerDI® rectifier product line targets high-efficiency, thermally constrained power conversion applications, emphasizing trench Schottky technology for low VF and high-temperature reliability in compact packages.

FAQ

What is the maximum continuous forward current rating for SDT15H50P5 at 100°C ambient?

At TA = 100°C, SDT15H50P5 supports 9.5A average forward current per Figure 3 derating curve. This is determined by its 100°C/W RθJA on FR-4 and 150°C TJ limit, allowing 50°C temperature rise above ambient before reaching thermal shutdown threshold.

Does SDT15H50P5 require a thermal pad connection on the PCB?

Yes-Pin 2 and Pin 3 are cathode terminals bonded to an internal metal slug that must be soldered to a minimum 100 mm² copper pour with ≥4 thermal vias (0.3mm diameter) to achieve the rated 2°C/W RθJC. Omitting this compromises surge current capability and shortens lifetime under 15A load.

Is SDT15H50P5 qualified for automotive applications per AEC-Q101?

No-SDT15H50P5 is not AEC-Q101 qualified. Diodes Incorporated offers automotive-grade variants (e.g., SDT15H50Q5) with PPAP documentation, IATF 16949 manufacturing, and extended temperature screening. This part is intended for industrial and commercial use only.

Can SDT15H50P5 replace a standard PN-junction rectifier like 1N5408 in a 24V/5A power supply?

Yes-with caveats. Its 50V VRRM matches 1N5408's 1000V rating marginally, but VF reduction from ~0.9V to ~0.44V cuts conduction loss by 50%. However, reverse leakage rises faster with temperature; ensure ambient stays below 85°C or add thermal monitoring to prevent thermal runaway.