BAV99,215 Dual High-Speed Switching Diode – Compact SOT-23 Package

Introduction

BAV99,215 is a high-speed switching diode packaged in a small SOT-23 housing. It features low junction capacitance, low leakage current, and fast reverse recovery characteristics, making it highly suitable for high-frequency switching, signal processing, surge protection, and various small-signal circuits. Additionally, due to the SOT-23 small package of BAV99,215, it is applicable to portable devices that are sensitive to space and compact PCB designs, making it a lightweight alternative to large-volume diodes.

Features

• High switching speed: trr ≤ 4 ns
• Low capacitance: Cd ≤ 1.5 pF
• Low leakage current
• Reverse voltage: VR ≤ 100 V
• Small SMD plastic packages

Pinning information

1. A1：anode
2. K2：cathode
3. K1,A2：cathode and anode 

Absolute Maximum Ratings

In what scenarios is BAV99,215 applied?

1.High-speed switching
The reverse recovery speed of BAV99,215 is fast, approximately 4 ns, and it can adapt to switching frequencies of over several tens of MHz. 

2.Reverse polarity protection
The BAV99,215 dual diode series connection is used for overvoltage/reverse voltage protection. Specifically, it is suitable for overvoltage clamping of the input signal, preventing damage to the IC from reverse voltage, and providing surge protection for sensitive components. 

3.General-purpose switching
BAV99,215 features low junction capacitance, low leakage current and fast reverse recovery characteristics. It is suitable for various general switching tasks. Its main function is to control the direction of current conduction, limit the voltage waveform and achieve rapid signal switching.

How can BAV99,215 be applied?

• Series diodes are used for overvoltage clamping.
• When the signal exceeds the safe range, the diode conducts, limiting the voltage to be near the safe value.
• Used as a high-speed switch
• Connect the diode to the switch matrix or signal routing circuit to perform rapid on-off, channel switching.
• Used for signal rectification or level detection
• In low current scenarios, the diode is used to achieve half-wave rectification or level threshold detection, commonly found in detectors and pre-amplifiers.
• In logic circuits as "AND/OR" circuits
• Diode logic is suitable for low-power simple logic processing.
• RF/high-speed signal protection or shaping
• Used for signal protection and noise suppression at the RF front end and antenna input.

Conclusion