Diodes Incorporated B520C-13-F

Overview

B520C-13-F from Diodes Incorporated is a 20 V, 5.0 A surface-mount Schottky barrier rectifier in SMC package, featuring 0.55 V max forward voltage at 5.0 A and 0.5 mA max reverse leakage at rated VR, optimized for low-voltage polarity protection and freewheeling in DC/DC converters and power supplies.

For engineers reviewing the B520C-13-F datasheet, B520C-13-F pinout, B520C-13-F application, or B520C-13-F equivalent, key selection criteria include its 20 V reverse voltage rating, 100 A non-repetitive surge capability, 10 °C/W junction-to-terminal thermal resistance, RoHS-compliant matte tin plating, and JEDEC-qualified reliability for commercial and industrial power conversion designs.

Technical Context

This Schottky rectifier uses guard ring die construction to suppress transient-induced failure and supports automated SMT assembly. Its low VF (≤0.55 V) and low IR (≤0.5 mA @ 25°C) enable high-efficiency operation in 12 V and 5 V rail protection circuits.

The device operates across –55 °C to +150 °C with RθJA = 50 °C/W on standard FR-4 PCBs and RθJT = 10 °C/W, allowing direct thermal coupling to copper pads without external heatsinks in moderate-power applications.

Key Specifications

Pinout & Package

Package: SMC (DO-214AB), molded plastic body with UL 94V-0 flammability rating, cathode indicated by band or notch, weight ≈ 0.21 g.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SB520-E3/54 and SS52, B520C-13-F offers tighter IR specification and lower RθJA, making it preferable for thermally constrained or battery-sensitive designs where leakage and thermal margin are critical.

Availability

B520C-13-F is available at Aetrix Electronics and suitable for DC power polarity protection, DC/DC converter freewheeling, and low-voltage battery backup applications requiring stable component supply and full traceability.

Supply support for B520C-13-F 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, high-reliability components for power management, signal integrity, and protection.

The B520C series belongs to Diodes' general-purpose Schottky rectifier product line, engineered for commercial and industrial power conversion where low VF, low IR, and JEDEC-qualified reliability are essential.

FAQ

What is the maximum junction temperature for B520C-13-F?

The absolute maximum junction temperature is +150 °C, with continuous operation supported from –55 °C to +150 °C. Derating begins above +25 °C ambient per Figure 7, where IO drops linearly to zero at +150 °C terminal temperature with recommended PCB copper pad area.

Is B520C-13-F suitable for automotive applications?

No-B520C-13-F is qualified to JEDEC standards for commercial/industrial use. For automotive-grade versions, Diodes offers the pin-compatible B520CQ-13-F, which meets AEC-Q101 requirements and is specified for under-hood and infotainment systems.

Does B520C-13-F have a halogen-free "Green" designation?

Yes-B520C-13-F is halogen- and antimony-free per Diodes' definition: <900 ppm bromine, <900 ppm chlorine (<1500 ppm total Br + Cl), and <1000 ppm antimony compounds, meeting "Green" device requirements.

What is the recommended PCB pad layout for SMC package?

Per Diodes' package outline DS13012 Rev. 18, the recommended SMC pad layout uses C = 6.90 mm, G = 4.40 mm, X = 2.50 mm, X1 = 9.40 mm, and Y = 3.30 mm (all in mm). This layout ensures optimal solder joint strength and thermal transfer for automated reflow processes.