Diodes Incorporated SBR8E45P5-7

Overview

SBR8E45P5-7 from Diodes Incorporated is a 45V, 5A Super Barrier Rectifier (SBR®) in the POWERDI®5 package, engineered for high-efficiency DC-DC converters and AC-DC adapters. It delivers ultra-low forward voltage (0.6 V max at 5 A, 25°C), low reverse leakage (0.28 mA max at 45 V, 25°C), and thermal resistance of 8 °C/W (junction-to-case), enabling compact, thermally stable rectification in space-constrained power supplies.

For engineers reviewing the SBR8E45P5-7 datasheet, SBR8E45P5-7 pinout, SBR8E45P5-7 application, or SBR8E45P5-7 equivalent, key selection criteria include forward voltage drop at full load, reverse leakage stability across temperature, junction-to-case thermal resistance, and compatibility with thin-profile PCB layouts requiring ≤1.1 mm height.

Technical Context

This SBR device uses a proprietary super barrier structure-distinct from Schottky or standard PN diodes-to achieve lower VF than conventional Schottkys while maintaining superior high-temperature IR stability. Its architecture suppresses minority-carrier injection, reducing reverse recovery charge and enabling operation up to +150°C junction temperature without significant leakage degradation.

The POWERDI®5 package integrates an exposed bottom-side heat sink directly bonded to the cathode terminal, enabling efficient thermal conduction through the PCB copper plane. Pin configuration supports single-ended mounting with left and right terminals electrically connected on-board, optimizing current sharing and minimizing parasitic inductance in high-frequency switching paths.

Key Specifications

Pinout & Package

Package: POWERDI®5 - surface-mount, thermally enhanced plastic package with exposed bottom-side cathode heat sink; 1.1 mm maximum profile; RoHS-compliant, halogen- and antimony-free "Green" compound.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SBRT5A45P5-7, SBR8E45P5-7 offers identical thermal performance but slightly higher VF; compared with SBRT3A45P5-7, it supports 67% higher average current without derating, making it optimal for 20 W+ power delivery where both current headroom and thermal robustness are critical.

Availability

SBR8E45P5-7 is available at Aetrix Electronics and suitable for AC-DC adapters, DC-DC converters, and industrial power supplies requiring stable component supply, consistent thermal performance, and RoHS-compliant "Green" packaging.

Supply support for SBR8E45P5-7 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-performance power management, signal integrity, and protection solutions for industrial, computing, and consumer markets.

The SBR® Super Barrier Rectifier product line targets high-efficiency, high-reliability power conversion applications where low VF, stable IR, and compact thermal packaging are essential-especially in space- and thermally constrained power supplies.

FAQ

What is the maximum junction temperature for SBR8E45P5-7?

The SBR8E45P5-7 has an operating junction temperature range of –55°C to +150°C. Its thermal resistance (RθJC = 8 °C/W) and low VF enable reliable operation at full 5 A load up to +125°C ambient when mounted on ≥1 oz. copper with adequate thermal pad area, per DS38001 Figure 4 derating curve.

Is SBR8E45P5-7 pin-compatible with standard Schottky diodes in POWERDI®5?

No-SBR8E45P5-7 uses a dual-anode configuration where left and right terminals are both anodes and must be shorted on the PCB, unlike single-anode Schottkys. The bottom thermal pad is the cathode, requiring specific PCB layout per AP02001. Direct substitution without layout review risks thermal overload or reverse bias failure.

Does SBR8E45P5-7 require external ESD protection during handling?

No-SBR8E45P5-7 features 8 kV HBM ESD rating, sufficient for standard SMT assembly environments. However, Diodes Incorporated recommends standard ESD-safe practices (grounded workstations, ionizers, wrist straps) during manual handling or rework to prevent latent damage from repeated exposure or MM events exceeding 400 V.

How does the POWERDI®5 package improve thermal performance over SO-8?

The POWERDI®5 exposes the cathode as a bottom-side thermal pad directly soldered to PCB copper, achieving RθJC = 8 °C/W-over 3× better than SO-8's typical 25–30 °C/W. This eliminates case-to-heatsink interface resistance and enables >2× higher power density in the same footprint, verified in thermal imaging tests per Diodes Application Note AN-2001.