Diodes Incorporated SBR8U20SP5-13

Overview

SBR8U20SP5-13 from Diodes Incorporated is an 8A Super Barrier Rectifier (SBR®) optimized for photovoltaic bypass diode applications, featuring a 20V peak repetitive reverse voltage, ultra-low 0.41V forward voltage at 8A/25°C, and rated for +200°C maximum junction temperature. It uses PowerDI5 packaging with dual anode/cathode terminals thermally coupled to a bottom-side heatsink, enabling high-reliability operation in solar panel string protection circuits.

For engineers reviewing the SBR8U20SP5-13 datasheet, SBR8U20SP5-13 pinout, SBR8U20SP5-13 application, or SBR8U20SP5-13 equivalent, key selection criteria include forward voltage drop at elevated temperature, surge current capability (180A IFSM), thermal resistance (60°C/W on polyimide PCB), and RoHS-compliant green packaging with matte tin annealed terminations.

Technical Context

This device implements patented Super Barrier Rectifier technology-distinct from Schottky or standard PN junctions-to achieve lower VF while maintaining superior high-temperature leakage performance. Its structure enables stable operation up to +200°C junction temperature under DC blocking conditions at ≤50% VRRM, with minimal VF drift across -65°C to +150°C ambient range.

The PowerDI5 package integrates a thermally enhanced bottom-side copper heatsink directly bonded to the die attach, requiring PCB-level electrical connection between left and right pins to complete the anode path. Thermal resistance drops from 102°C/W (FR-4) to 60°C/W (polyimide) due to optimized pad layout and direct thermal conduction through the exposed cathode pad.

Key Specifications

Pinout & Package

Package: PowerDI5 - surface-mount, thermally enhanced plastic package with exposed copper cathode pad on bottom side; dimensions 6.51mm × 3.966mm × 1.10mm (L × W × H); UL 94V-0 rated molding compound; moisture sensitivity level 1.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SBRT8U20SP5-13, the SBR8U20SP5-13 offers identical performance with standardized marking; versus PS1040L-13, it delivers 27% lower conduction loss and 50% higher surge tolerance-critical for outdoor PV reliability and rapid EV charge cycle robustness.

Availability

SBR8U20SP5-13 is available at Aetrix Electronics and suitable for photovoltaic bypass protection, high-temperature industrial power supplies, and EV charging station auxiliary power requiring stable component supply, long-lifecycle support, and RoHS-compliant green manufacturing.

Supply support for SBR8U20SP5-13 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 Europe, serving automotive, industrial, computing, and consumer markets.

The SBR® product line was developed specifically for high-efficiency, high-reliability power conversion in thermally constrained environments-emphasizing low VF stability over temperature, surge resilience, and extended junction temperature capability beyond standard Schottky limits.

FAQ

What is the thermal pad connection requirement for SBR8U20SP5-13?

The bottom-side copper pad is the cathode terminal and primary thermal path. It must be soldered to a minimum 18.8mm × 14.4mm copper pour on a polyimide PCB to achieve the 60°C/W RθJA rating. Left and right pins must be electrically joined on the PCB to complete the anode path-no internal connection exists between them.

Can SBR8U20SP5-13 replace standard Schottky diodes in existing solar designs?

Yes, provided the PCB layout accommodates the PowerDI5 footprint and the anode connection is modified to tie left and right pins together. Its lower VF (0.41V vs typical 0.55V) reduces power loss by ~25%, and its +200°C rating allows operation in hotter enclosures where standard Schottkys would exceed TJ limits.

Is SBR8U20SP5-13 qualified for automotive applications?

No-this part is not AEC-Q101 qualified. Diodes offers the automotive-grade SBR8U20SP5Q variant with separate qualification testing, different traceability, and extended temperature screening. Use SBR8U20SP5-13 only in industrial, commercial, or residential PV systems outside automotive safety-critical domains.

How does the SBR® technology differ from trench Schottky diodes?

SBR® uses a proprietary epitaxial structure with graded barrier height and integrated guard rings to suppress leakage at high temperature, whereas trench Schottkys rely on geometric field control. This gives SBR8U20SP5-13 0.5mA IR at 20V/25°C versus >2mA for comparable trench devices-and only 0.2mA at 125°C, ensuring stable bypass behavior under sustained partial shading.