Diodes Incorporated SBR5E45P5-7

Overview

SBR5E45P5-7 from Diodes Incorporated is a 5A, 45V Super Barrier Rectifier (SBR®) in the POWERDI®5 package, engineered for high-efficiency DC-DC conversion and AC-DC adapter rectification. 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 90°C/W (junction-to-ambient), enabling compact, thermally constrained power supplies.

For engineers reviewing the SBR5E45P5-7 datasheet, SBR5E45P5-7 pinout, SBR5E45P5-7 application, or SBR5E45P5-7 equivalent, key selection criteria include forward voltage drop at 5 A, reverse leakage stability up to +125°C, junction-to-case thermal resistance (8°C/W), maximum surge current (120 A), and RoHS-compliant, halogen-free POWERDI®5 packaging for thin-profile designs.

Technical Context

This SBR rectifier uses proprietary super barrier technology to achieve lower VF than standard Schottky diodes while maintaining superior high-temperature IR stability-critical for unregulated secondary-side rectification where thermal runaway must be avoided. Its 45 V VRRM rating targets 12–24 V output rails in offline adapters and isolated DC-DC converters.

The POWERDI®5 package integrates a bottom-side heat sink with dual anode/cathode terminals on the same side, enabling PCB-level thermal management via copper pour under the exposed pad. Pin configuration supports direct mounting to ground planes without vias, reducing thermal impedance and improving reliability in continuous conduction mode operation.

Key Specifications

Pinout & Package

Package: POWERDI®5 - surface-mount, thermally enhanced plastic package with exposed bottom-side heat sink (cathode-connected thermal pad). Dimensions: 4.0 × 6.5 × 1.1 mm (L × W × H), weight 0.093 g. UL 94V-0 rated, MSL Level 1.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SBRT5A45DCT-7 and SS5P4, the SBR5E45P5-7 uniquely balances ultra-low VF, sub-0.3 mA IR at 25°C, and 8 °C/W RθJC-making it the only option among the three capable of sustaining 5 A at 125°C ambient in a 10W+ adapter without active cooling.

Availability

SBR5E45P5-7 is available at Aetrix Electronics and suitable for AC-DC adapters, isolated DC-DC converters, and polarity protection circuits requiring stable component supply, RoHS/Green compliance, and consistent thermal performance across industrial temperature ranges.

Supply support for SBR5E45P5-7 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, headquartered in Plano, Texas, with design, manufacturing, and sales operations across Asia, Europe, and the Americas.

The SBR® product line delivers high-performance super barrier rectifiers optimized for high-efficiency, high-reliability power conversion in space-constrained and thermally demanding applications such as consumer chargers and industrial power supplies.

FAQ

What is the thermal pad connection requirement for SBR5E45P5-7?

The bottom-side thermal pad is electrically connected to the cathode and must be soldered to a minimum 1 cm² copper area on the PCB using at least six thermal vias (0.3 mm diameter) to a solid internal ground plane. Failure to do so increases RθJA beyond 90°C/W, risking thermal shutdown at 5 A load.

Can SBR5E45P5-7 replace a standard Schottky diode in an existing 24 V, 5 A flyback design?

Yes-pin-compatible with common SOD-123 and POWERDI®5 footprints-but requires verification of PCB copper area under the thermal pad. Its 0.6 V VF reduces conduction loss by ~1.0 W versus a typical 0.8 V Schottky, lowering MOSFET junction temperature and improving overall converter efficiency by 1.8% at full load.

What is the maximum allowable ambient temperature for continuous 5 A operation?

At 5 A DC, the device dissipates ~3.0 W (0.6 V × 5 A). With RθJA = 90°C/W, maximum ambient is 70°C for TJ ≤ 150°C. For 85°C ambient, derate to 3.9 A using Figure 4's forward current derating curve-no external heatsink required if PCB layout meets Diodes' AP02001 pad recommendations.

Does SBR5E45P5-7 meet automotive AEC-Q101 qualification?

No-SBR5E45P5-7 is qualified to industrial temperature range (−55°C to +150°C) and MSL Level 1, but it is not AEC-Q101 certified. For automotive body electronics, Diodes offers the AEC-Q101-qualified SBR5E45P5Q-7 variant with identical electrical specs and extended reliability testing per JESD22-A108.