Vishay General Semiconductor - Diodes Division 10BQ100

Overview

10BQ100 from Vishay (formerly International Rectifier) is a surface-mount Schottky rectifier optimized for high-efficiency, high-frequency DC/DC conversion and reverse polarity protection. It delivers 1.0 A average forward current, 100 V maximum reverse voltage, and 0.62 V forward voltage drop at 1.0 A and 125°C junction temperature - enabling low conduction loss in compact power supplies and battery management circuits.

For engineers reviewing the 10BQ100 datasheet, 10BQ100 pinout, 10BQ100 application, or 10BQ100 equivalent, key selection criteria include its SMB package footprint, low thermal resistance (36°C/W junction-to-lead), 780 A non-repetitive surge rating, and lead-free compliance - critical for space-constrained industrial and computing power designs.

Technical Context

The 10BQ100 operates as a unidirectional, single-anode/cathode Schottky barrier diode with guard ring structure for enhanced ruggedness and long-term reliability under repetitive surge stress. Its 42 pF junction capacitance at 5 V and 2.0 nH series inductance support stable switching up to several MHz without significant ringing.

Designed for operation across –55°C to +175°C junction temperature range, it leverages low forward voltage and fast recovery (no stored charge) to minimize switching losses in synchronous rectification, flyback snubbers, and OR-ing circuits - where thermal performance is constrained by PCB copper area and ambient conditions.

Key Specifications

Pinout & Package

SMB (DO-214AA) surface-mount package: 4.70 mm × 3.30 mm × 2.15 mm body, cathode marked with band, anode and cathode terminals on opposite ends of molded case.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SS110H and SB1100-TB, the 10BQ100 offers superior thermal performance (36°C/W), higher surge tolerance (780 A), and verified 125°C forward voltage stability - making it the preferred choice for thermally demanding, high-reliability industrial and computing power applications.

Availability

10BQ100 is available at Aetrix Electronics and suitable for server power supplies, disk drive power management, and industrial DC-DC converters requiring stable component supply, RoHS-compliant sourcing, and long-lifecycle availability.

Supply support for 10BQ100 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

Vishay Intertechnology is a global manufacturer of discrete semiconductors and passive components, founded in 1962 and headquartered in Malvern, Pennsylvania.

The 10BQ100 belongs to Vishay's legacy Schottky rectifier portfolio acquired from International Rectifier, engineered specifically for high-efficiency, high-density power conversion in computing, storage, and industrial equipment.

FAQ

What is the maximum junction temperature rating for the 10BQ100?

The 10BQ100 has a maximum junction temperature rating of +175°C, with operational capability down to –55°C. This wide range allows use in harsh environments such as industrial motor drives and automotive under-hood auxiliary power supplies, provided thermal design meets the 36°C/W junction-to-lead resistance specification. The 10BQ100 maintains stable electrical performance across this full range, including 0.62 V forward voltage at 125°C.

Is the 10BQ100 compatible with lead-free reflow soldering processes?

Yes, the 10BQ100PbF variant is explicitly designed for lead-free assembly and complies with JEDEC J-STD-020 moisture sensitivity and reflow profile requirements. Its PbF suffix confirms RoHS-compliant termination finish, and the SMB package withstands peak reflow temperatures up to 260°C. The 10BQ100 must be handled per Vishay's AN-994 soldering guidelines to avoid thermal damage during PCB assembly.

Does the 10BQ100 have a guard ring structure, and why does it matter?

Yes, the 10BQ100 incorporates a guard ring structure, as confirmed in its datasheet features and reliability documentation. This design enhances edge termination robustness, preventing premature avalanche breakdown under high dv/dt stress or localized heating. For the 10BQ100, this directly contributes to its 10,000 V/µs dv/dt rating and long-term reliability in repetitive surge applications like DC-DC converter output stages.

What is the typical junction capacitance of the 10BQ100, and how does it affect high-frequency operation?

The 10BQ100 exhibits 42 pF typical junction capacitance at 5 V reverse bias and 25°C, measured across 100 kHz–1 MHz. This low CT value minimizes capacitive loading on switching nodes, reducing switching losses and EMI generation in high-frequency converters (e.g., >300 kHz flyback or LLC resonant topologies). The 10BQ100's capacitance remains stable across temperature, supporting consistent timing behavior in precision power designs.

Can the 10BQ100 replace a standard silicon rectifier in an existing design?

Yes, the 10BQ100 can directly replace many 1 A/100 V silicon rectifiers (e.g., 1N5408) in surface-mount designs using the SMB footprint, provided layout accounts for its lower forward voltage and absence of reverse recovery charge. Unlike silicon diodes, the 10BQ100 eliminates reverse recovery loss - but requires verification of thermal margin due to different RthJL (36°C/W vs. ~60°C/W for SMA silicon diodes). Always confirm voltage derating and surge requirements before substituting the 10BQ100.