Diodes Incorporated SBR8E45P5-7D

Overview

SBR8E45P5-7D from Diodes Incorporated is a 45 V, 5 A Super Barrier Rectifier (SBR®) in the POWERDI®5 package, delivering ultra-low forward voltage (0.6 V max at 5 A, 25°C) and low reverse leakage (0.28 mA max at 45 V, 25°C). It serves as a high-efficiency rectifier or freewheeling diode in compact AC-DC adapters and DC-DC converters where thermal performance and thin-profile packaging are critical.

For engineers reviewing the SBR8E45P5-7D datasheet, SBR8E45P5-7D pinout, SBR8E45P5-7D application, or SBR8E45P5-7D equivalent, key selection criteria include forward voltage drop at 5 A, reverse leakage stability up to +125°C, thermal resistance (R_θJC = 8 °C/W), and compatibility with 1.5 k tape-and-reel delivery on 7-inch reels.

Technical Context

This Super Barrier Rectifier uses a proprietary epitaxial structure to achieve lower VF than standard Schottky diodes while maintaining superior IR stability at elevated temperatures-critical for high-density power supplies operating near thermal limits. Its architecture avoids the high-temperature leakage degradation typical of conventional Schottkys.

The POWERDI®5 package integrates a bottom-side heat sink directly under the die, enabling efficient thermal conduction to the PCB copper plane. With R_θJA = 90 °C/W (on 1 oz FR-4) and only 1.1 mm profile, it supports space-constrained, thermally demanding applications without external heatsinking.

Key Specifications

Pinout & Package

Package: POWERDI®5 - surface-mount, thermally enhanced plastic package with exposed bottom-side copper pad for PCB heat sinking; 1.1 mm maximum height, 3.966 mm × 6.504 mm footprint.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SBRT5A45SP5-13 and PS1045L-13, the SBR8E45P5-7D delivers optimal balance of low V_F, tight I_R control at high temperature, and superior thermal management-making it the preferred choice for thermally constrained, high-reliability 5 A rectification.

Availability

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

Supply support for SBR8E45P5-7D 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 SBR® Super Barrier Rectifier product line targets high-efficiency power conversion in space- and thermally-constrained applications, emphasizing low forward voltage, stable leakage, and robust thermal packaging for consumer, industrial, and computing power supplies.

FAQ

What is the maximum continuous forward current for SBR8E45P5-7D at +100°C ambient?

At +100°C ambient, the device supports 3.2 A average forward current per the derating curve in Figure 4 of DS38001 Rev. 2–2. This assumes mounting on a 1 oz FR-4 board with ≥2 cm² copper pour under the bottom-side pad. Derating begins linearly at +25°C, reaching zero at +150°C.

Is the bottom-side thermal pad electrically isolated?

Yes-the exposed copper pad on the underside of the POWERDI®5 package is electrically isolated from both anode and cathode terminals. It serves solely as a thermal interface and must be connected to a dedicated thermal copper pour, not to signal or power planes unless explicitly tied to cathode via internal layer routing.

Does SBR8E45P5-7D meet automotive AEC-Q101 requirements?

No-SBR8E45P5-7D is not AEC-Q101 qualified. It is rated for industrial temperature range (–55°C to +150°C) and intended for commercial/industrial power applications. For automotive use, Diodes offers the AEC-Q101-qualified SBR10E45P5 series with identical electrical specs and enhanced qualification testing.

Can SBR8E45P5-7D replace a standard Schottky diode in an existing design?

Yes-SBR8E45P5-7D is a direct footprint and functional replacement for 5 A, 45 V Schottky diodes in POWERDI®5 packages. Its lower V_F reduces conduction loss, and its improved I_R stability eliminates thermal runaway risk. No layout change is needed, though thermal copper area should be verified per R_θJA = 90 °C/W spec.