BAV99-Q Package and Pinout Reference
The BAV99-Q is a high-speed switching diode array, commonly used in automotive and other high-reliability applications. It consists of two series-connected diodes in a small surface-mount package. This article provides a technical overview of its specifications, configuration, and applications.
Table of Contents
1. Overview and Core Features
The BAV99-Q is AEC-Q101 qualified for automotive applications, ensuring high reliability and performance. Its key features include a very fast switching speed and low capacitance, making it ideal for high-frequency signal processing and protection circuits. The SOT-23 package allows for dense circuit board designs.
2. Specifications and Parameter Table
| Parameter | Value |
|---|---|
| Configuration | Dual Series |
| Repetitive Peak Reverse Voltage | 70V |
| Average Forward Current | 215mA |
| Reverse Recovery Time | 3 µs |
| Package | SOT-23 |
| Qualification | AEC-Q101 |
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Check BAV99-Q Stock3. Architecture and Block Diagram
The BAV99-Q contains two high-speed silicon epitaxial diodes connected in series within a single package. This configuration is useful for various circuit designs, including voltage multiplication, signal rectification, and protection. The monolithic construction ensures close matching of the diode characteristics.
4. Video: Feature Breakdown
5. Equivalents, Cross-Reference, and Lifecycle
The BAV99-Q is a very common and actively manufactured component, widely available from multiple sources. It is considered a standard part in the electronics industry. Cross-referencing to other dual-diode arrays in a SOT-23 package is straightforward, but AEC-Q101 qualification should be verified if required.
6. Frequently Asked Questions (FAQ)
What does the '-Q' suffix mean in BAV99-Q?
The '-Q' suffix indicates that the component is AEC-Q101 qualified, meaning it is approved for use in automotive applications due to its high reliability and robustness.
Can I use a standard BAV99 instead of a BAV99-Q?
For non-automotive applications, a standard BAV99 can often be used. However, for any automotive or high-reliability use case, the BAV99-Q is required to meet the necessary quality standards.
Alan Carter, Senior Hardware Engineer
Alan has over 15 years of experience in embedded systems design, specializing in ARM Cortex architectures, PCB routing for high-speed digital signals, and industrial IoT deployments. He frequently contributes technical teardowns and architecture comparisons.


