BAV99 A7W 100V 215mA Dual High Speed Diode SOT-23

BAV99 A7W Dual High Speed Diode offers engineers and designers a compact, high-performance solution for fast switching applications. Encapsulated in the industry-standard SOT-23 surface-mount package, this device integrates two independent switching diodes configured as a common cathode pair. It features a high reverse voltage of 100V and can handle a continuous forward current of up to 215mA, making it exceptionally versatile. The BAV99’s primary advantage lies in its extremely fast switching speed, which is crucial for signal processing, high-frequency rectification, and protection circuits where minimizing switching losses and delays is paramount. Use this diode when building reliable, miniaturized electronic products, from telecommunications interfaces to advanced control systems.

Key Features:

• Dual Diode Configuration: Integrates two high-speed switching diodes in a common cathode arrangement, optimizing space and reducing component count.
• High Reverse Voltage: Offers a repetitive peak reverse voltage ($V_{RRM}$) of 100 V, suitable for many industrial and high-voltage signal applications.
• Fast Switching Speed: Provides very short reverse recovery time ($t_{rr}$), making it ideal for high-frequency switching circuits and signal clipping.
• High Current Capability: Handles a continuous forward current ($I_F$) up to 215 mA, supporting moderate power applications despite its small size.
• SOT-23 Package: Utilizes the small, widely adopted surface-mount SOT-23 package, essential for high-density PCBs and miniaturized devices.

Technical Specifications:

• Repetitive Peak Reverse Voltage ($V_{RRM}$): 100 V
• Continuous Forward Current ($I_F$): 215 mA
• Surge Non-Repetitive Peak Forward Current ($I_{FSM}$): ≈ 4 A (at $t = 1 \mu s$)
• Forward Voltage ($V_F$): Typically < 1 V (at $I_F = 10 \text{ mA}$)
• Reverse Recovery Time ($t_{rr}$): < 4 ns (Nanoseconds)
• Power Dissipation ($P_{tot}$): ≈ 250 mW

Mechanical Specifications:

• Package Type: SOT-23 (Small Outline Transistor)
• Mounting: Surface Mount Device (SMD)
• Marking Code: A7W (Varies by manufacturer but often includes A7W)
• Operating Junction Temperature ($T_J$): ≈ -65°C to 150°C

Dimensions:

• Package Body Length: ≈ 2.9 mm
• Package Body Width: ≈ 1.3 mm
• Package Height: ≈ 1.0 mm
• Weight: < 0.01 g

Pinout and Wiring:

• Pin 1 (Cathode 1 / K1): Connected to the cathode of the first diode.
• Pin 2 (Common Cathode / K): The central pin, internally connected to both diode cathodes.
• Pin 3 (Cathode 2 / K2): Connected to the cathode of the second diode.
• Configuration: Note that the industry-standard BAV99 SOT-23 package usually has a slightly different pinout (Pin 1=Anode1, Pin 2=Common Cathode, Pin 3=Anode2) depending on the manufacturer, but the *common cathode* configuration is standard. Always verify with the specific manufacturer’s datasheet.

Datasheet Reference:

• Download BAV99 A7W Datasheet

Commonly Used in:

• Consumer Electronics: Protecting sensitive inputs in portable devices like smartphones and digital cameras.
• Microcontroller Interfaces: Clipping and clamping signals before they reach analog-to-digital converters (ADCs).
• High-Speed Data Lines: Used as transient voltage suppressors (TVS) for electrostatic discharge (ESD) protection.

Applications:

• High-Speed Switching: Ideal for fast clock signal routing and high-frequency circuit operation.
• Reverse Polarity Protection: Preventing damage to circuits from incorrect battery connection.
• Clamping and Clipping Circuits: Limiting signal voltage swings in communication and control loops.
• Rectification: Small-signal high-frequency rectification.

Equivalent Models:

• BAS16: A single switching diode alternative.
• BAV70: Another dual switching diode offering similar performance but potentially a different pin configuration.
• 1N4148W: A widely used but slightly slower switching diode often found in a larger package (SMA/DO-35).

Package Includes:

• 1 x BAV99 A7W 100V 215mA Dual High Speed Diode