Diodes Incorporated B130B-13-F

Overview

B130B-13-F from Diodes Incorporated is a 1.0A surface-mount Schottky barrier rectifier with 30V peak repetitive reverse voltage (V_RRM), 0.5V maximum forward voltage at 1.0A, and 0.5mA maximum reverse leakage current at 25°C. It uses SMB package construction, features guard ring die for transient protection, and is optimized for low-voltage, high-frequency polarity protection and freewheeling in DC-DC converters.

For engineers reviewing the B130B-13-F datasheet, B130B-13-F pinout, B130B-13-F application, or B130B-13-F equivalent, key selection criteria include its 30V blocking rating, low 0.5V V_F at rated current, 30A non-repetitive surge capability, SMB thermal resistance of 20°C/W, and RoHS-compliant lead-free plating - all critical for power rail protection and flyback diode design in space-constrained industrial and consumer power supplies.

Technical Context

This Schottky rectifier operates via majority-carrier conduction, eliminating minority-carrier storage delay and enabling high-frequency switching up to several MHz. Its guard ring die structure provides inherent transient voltage suppression without external components, and the low forward voltage directly reduces conduction loss in 3.3V–24V input rails.

The device is rated for continuous operation from –65°C to +150°C junction temperature, with thermal resistance (R_θJT) of 20°C/W when mounted on 5.0 mm² copper pads. Its 110 pF typical junction capacitance at 4V reverse bias supports fast turn-off in PWM-controlled inductive loads.

Key Specifications

Pinout & Package

Package: SMB (Surface-Mount Body), molded plastic, UL 94V-0 rated, with matte tin-plated terminals and cathode band marking. Weight: 0.093 g.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SB130-E3/52T and SS13, B130B-13-F delivers identical 30V/1.0A ratings with the lowest V_F (0.5V) and tightest leakage (0.5mA), making it optimal for thermally sensitive, high-efficiency 24V industrial power rails where SMB mechanical robustness is preferred over SMA size reduction.

Availability

B130B-13-F is available at Aetrix Electronics and suitable for industrial motor drives, USB-C power delivery modules, and 24V DC-DC converters requiring stable component supply and long-term manufacturability.

Supply support for B130B-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 applications.

B130B-13-F belongs to the B120/B–B160/B Schottky rectifier family, engineered specifically for commercial and industrial power conversion systems demanding low-loss, high-speed rectification in compact surface-mount packages.

FAQ

What is the maximum junction temperature for continuous operation?

The B130B-13-F is rated for continuous operation from –65°C to +150°C junction temperature. Derating begins above +130°C terminal temperature, where average current must be reduced per the forward current derating curve in Figure 6 of DS13002 Rev. 20–2. At +150°C, I_O drops to approximately 0.65A.

Is B130B-13-F suitable for automotive applications?

B130B-13-F is not AEC-Q101 qualified and is intended for commercial/industrial use. Diodes Incorporated offers automotive-grade variants (e.g., B130BQ-13-F) with PPAP documentation, IATF 16949 manufacturing, and extended temperature validation - contact Diodes or Aetrix for qualified alternatives.

How does the SMB package compare thermally to SMA for this part?

The SMB package has lower thermal resistance (20°C/W) than the SMA variant (25°C/W) due to larger copper pad contact area and improved heat spreading. This allows B130B-13-F to sustain full 1.0A current at higher ambient temperatures compared to the SMA-packaged B130-13-F under identical PCB layout conditions.

Can B130B-13-F replace a 1N5819 in existing designs?

Yes - B130B-13-F matches 1N5819's 30V V_RRM and 1.0A I_O, but improves V_F (0.5V vs. 0.475V typ. but 0.6V max for 1N5819) and surge rating (30A vs. 25A). Its SMB footprint differs from DO-41, so mechanical redesign is required, but electrical performance is superior in modern SMT layouts.