Diodes Incorporated B530CQ-13-F

Overview

B530CQ-13-F from Diodes Incorporated is a 30 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 polarity protection and freewheeling in low-voltage DC/DC converters and automotive power modules.

For engineers reviewing the B530CQ-13-F datasheet, B530CQ-13-F pinout, B530CQ-13-F application, or B530CQ-13-F equivalent, key selection criteria include its AEC-Q101 qualification, 10 °C/W junction-to-terminal thermal resistance, RoHS-compliant lead-free finish, and suitability for high-frequency switching up to 1 MHz with 16 ns typical reverse recovery time.

Technical Context

This Schottky diode employs guard ring die construction to suppress transient-induced failure and supports automated SMT assembly without solderability compromise. Its low VF (0.55 V max) and low IR (0.5 mA max at 25°C) enable high-efficiency operation in 3.3 V–12 V input power rails.

Thermal performance is defined by three RθJA values (50 °C/W on minimal PCB, 115 °C/W on FR-4, 30 °C/W with aluminum heatsink), allowing precise thermal design across consumer, industrial, and automotive ambient conditions (–55°C to +150°C).

Key Specifications

Pinout & Package

Package: SMC (DO-214AB), molded plastic case with UL 94V-0 flammability rating, 0.21 g weight, matte tin-plated terminals, cathode band polarity marking.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SB530-E3/54 and SS53, B530CQ-13-F delivers superior thermal performance (RθJT = 10 °C/W), guaranteed automotive reliability (AEC-Q101 + PPAP), and lower leakage-making it optimal for safety-critical or thermally constrained designs.

Availability

B530CQ-13-F is available at Aetrix Electronics and suitable for automotive body control modules, industrial DC/DC converters, and USB-C power delivery systems requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for B530CQ-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, headquartered in Plano, Texas, with design, manufacturing, and sales operations across Asia, Europe, and North America.

B530CQ-13-F belongs to the B520CQ–B560CQ Schottky rectifier family engineered for high-reliability commercial and automotive power conversion, emphasizing low VF, fast switching, and robust transient handling.

FAQ

What is the maximum junction temperature for continuous operation?

The B530CQ-13-F has an operating junction temperature range of –55°C to +150°C. Continuous operation at TJ = 150°C requires thermal design ensuring RθJA ≤ 20 °C/W (e.g., using 50 mm × 50 mm × 23 mm Al heatsink per Note 8), verified via Figure 5's derating curve and RθJT = 10 °C/W.

Is this diode suitable for synchronous rectification?

No-B530CQ-13-F is a passive Schottky rectifier, not a synchronous rectifier controller or MOSFET driver. It functions as a freewheeling or output rectifier only. Synchronous rectification requires active gate control, which this device does not provide.

Does the "-13-F" suffix indicate tape-and-reel packaging?

Yes-the "-13-F" suffix denotes 3000-piece tape-and-reel packaging in SMC format, per Diodes Incorporated's ordering nomenclature (Note 5). The "F" confirms RoHS-compliant, lead-free plating; "13" specifies the reel quantity and orientation standard.

How does the guard ring construction improve reliability?

The guard ring die structure distributes electric field stress away from the active junction edge, suppressing premature avalanche and surface leakage. This extends lifetime under repetitive 100 A surge (IFSM) and improves HBM ESD tolerance to 4000 V-critical for automated handling and automotive vibration environments.