Diodes Incorporated B190-13-F

Overview

B190-13-F from Diodes Incorporated is a 1.0A, 90V peak repetitive reverse voltage (V_RRM) Schottky barrier rectifier in SMA package, featuring 0.79V max forward voltage at 1.0A and 0.5mA max reverse leakage at 25°C, optimized for polarity protection and DC-DC freewheeling in space-constrained power supplies.

For engineers reviewing the B190-13-F datasheet, B190-13-F pinout, B190-13-F application, or B190-13-F equivalent, key selection criteria include its low VF/IR trade-off, JEDEC-qualified reliability, RoHS-compliant lead-free plating, and suitability for high-frequency switching topologies requiring minimal conduction loss.

Technical Context

This Schottky rectifier uses guard ring die construction to suppress transient-induced avalanche breakdown and supports continuous operation up to +150°C junction temperature. Its low 25°C/W junction-to-terminal thermal resistance enables stable 1.0A average forward current at terminal temperatures ≤+125°C.

The device exhibits 80pF total capacitance at 4V reverse bias and 1.0A non-repetitive surge rating for 8.3ms half-sine wave, making it suitable for inductive load commutation and input rectification where fast recovery and low stored charge are critical.

Key Specifications

Pinout & Package

Package: SMA (DO-214AC), surface-mount plastic case with cathode band marking; dimensions per Diodes Inc. outline: A=2.29–2.92mm, B=4.00–4.60mm, C=1.27–1.63mm, E=4.80–5.59mm.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SS19-TP and SB190-E3/5AT, B190-13-F delivers identical electrical performance in a smaller SMA package with superior thermal resistance-making it optimal for high-density, thermally constrained DC-DC and automotive modules where board space and efficiency are prioritized.

Availability

B190-13-F is available at Aetrix Electronics and suitable for DC-DC converter freewheeling, automotive polarity protection, and solar charge controller blocking applications requiring stable component supply and long-term manufacturing continuity.

Supply support for B190-13-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.

The B170/B–B1100/B series targets high-reliability power conversion and protection in industrial, automotive, and consumer power supplies-designed specifically for low-loss, high-frequency rectification where Schottky performance and JEDEC qualification are essential.

FAQ

What is the maximum junction temperature for continuous operation?

The B190-13-F is rated for continuous operation from –65°C to +150°C junction temperature. At terminal temperature (T_T) = +125°C, it sustains 1.0A average forward current. Derating follows the curve in Figure 3 of DS30018: at T_T = +100°C, I_O remains ≥1.0A; at +150°C, I_O drops to ~0.7A due to thermal limits.

Is B190-13-F suitable for automotive applications?

Yes-B190-13-F meets JEDEC reliability standards referenced in AEC-Q200 for passive components. While the standard B190-13-F is industrial-grade, Diodes offers automotive-qualified variants (e.g., B190BQ-13-F) with extended testing. For non-safety-critical modules like body electronics or infotainment power rails, B190-13-F is widely deployed with proven field reliability.

How does the guard ring construction improve real-world performance?

The guard ring die structure prevents premature edge breakdown under voltage transients by redistributing electric field stress away from the active junction periphery. In practice, this allows the B190-13-F to survive ISO 7637-2 load-dump pulses (up to 120V) without failure-unlike non-guard-ring Schottkys that may avalanche and short during such events.

Can B190-13-F replace a 1N5819 in existing designs?

Yes-B190-13-F is a direct functional replacement for 1N5819 (20V/1A) in applications requiring higher reverse voltage. With 90V V_RRM vs. 1N5819's 20V, it supports wider input ranges (e.g., 48V systems). Electrical parameters (VF, IR, capacitance) are closely matched, and SMA package compatibility ensures drop-in PCB fit for most 1N5819 layouts.