Diodes Incorporated SDT15H50P5-13D

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 plating for lead-free reflow compatibility.

Technical Context

This Schottky rectifier uses trench MOS structure to reduce forward voltage while maintaining low leakage at elevated temperatures. Its 0.39V typical VF at 10A/25°C and 0.42V at 10A/125°C enable high-conversion efficiency in space-constrained power stages.

The device achieves 2°C/W junction-to-case thermal resistance when mounted on a 50mm × 50mm × 23mm aluminum heatsink, supporting continuous 15A operation up to +125°C ambient with proper PCB layout per Diodes' recommended pad dimensions.

Key Specifications

Pinout & Package

Package: PowerDI5 - surface-mount, thermally enhanced plastic package with exposed copper die pad for low RθJC. Dimensions: 3.966 mm × 6.51 mm × 1.10 mm (L × W × H); weight ≈ 0.093 g.

Key Features

Applications

Availability

SDT15H50P5-13D is available at Aetrix Electronics and suitable for DC/DC converters, AC/DC adapters, and industrial power supplies requiring stable component supply with tight thermal and efficiency constraints.

Supply support for SDT15H50P5-13D 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, manufacturing, and sales operations across Asia, Europe, and North America.

The SDT15H50P5 belongs to Diodes' PowerDI® trench Schottky rectifier product line, engineered for high-current, low-VF applications in space-constrained, thermally demanding power conversion systems.

FAQ

What is the thermal pad connection requirement for SDT15H50P5-13D?

The exposed thermal pad (Pin 3) is electrically connected to the cathode and must be soldered to a minimum 100 mm² copper area on the PCB using ≥4 thermal vias (0.3mm diameter) to an internal ground plane. This achieves the 2°C/W RθJC rating and prevents thermal runaway at 15A.

How does SDT15H50P5 compare to standard planar Schottky rectifiers at 125°C?

At TJ = +125°C and IF = 15A, SDT15H50P5 delivers 0.47V VF and 0.5mA IR - outperforming planar equivalents by ~0.08V lower VF and 3× lower IR. This translates to ~1.2W less conduction loss and improved no-load power consumption in high-temperature operation.

Is SDT15H50P5-13D qualified for automotive applications?

SDT15H50P5-13D is not AEC-Q101 qualified. For automotive-grade versions, Diodes offers the SDT15H50Q5 series (AEC-Q101 qualified, PPAP-capable). Customers requiring automotive qualification must specify the Q5 suffix and engage Diodes' automotive support team.

Can SDT15H50P5-13D replace a 20A Schottky in existing designs?

No - its 15A IO rating is absolute maximum under defined thermal conditions. Substituting for a 20A part risks thermal failure unless the PCB layout, heatsinking, and ambient conditions are rigorously re-evaluated to confirm junction temperature remains ≤+150°C at peak load.