The BAW56 from Nexperia is a high-speed, dual switching diode housed in a compact SOT-23 package.
Widely used in general-purpose switching, signal processing, and protection circuits, it’s a preferred choice for engineers seeking efficient, space-saving diode solutions.
This article provides an in-depth look at its technical specifications, performance characteristics, and application scenarios to help users better understand this essential discrete component.
Overview
Manufactured by Nexperia, the BAW56 is a dual series-connected diode designed for fast switching and low-leakage current applications.
Encased in a lead-free SOT-23 surface-mount package, it is fully RoHS compliant and suitable for high-speed, compact designs.
Key Features
Diode Configuration:
Dual diodes in series configuration
Ideal for switching and protection in signal lines
Electrical Characteristics:
Reverse Voltage (VR): 75V
Forward Current (IF): 150mA
Non-Repetitive Peak Forward Surge Current: 2A (tp = 1 μs)
Reverse Recovery Time (trr): 4ns (typical)
Thermal and Power Ratings:
Total Power Dissipation: 200mW
Junction Temperature: Up to +150°C
Storage Temperature Range: -65°C to +150°C
Package and Mounting:
Package: SOT-23
Lead Finish: Matte Tin
Optimized for automatic placement and reflow soldering
Compliance and Reliability:
AEC-Q101 qualified (automotive-grade versions available)
Fully RoHS compliant and halogen-free
Applications
The BAW56 is widely applied in:
General Switching: High-speed signal routing in digital logic circuits
Protection Circuits: For clamping, ESD protection, and voltage suppression
Waveform Clipping: In analog front ends and timing circuits
Logic Level Shifting: Between different voltage domains
Consumer Electronics & Industrial Control
Automotive Electronics: When using AEC-Q101 versions
Procurement & Alternative Models
The BAW56 from Nexperia is available through global electronic distributors, including Futuretech Components, Digi-Key, Mouser, and Arrow.
Stock levels may fluctuate based on demand and lead time.
For alternatives, consider:
BAV99 (dual diode with similar configuration)
MMBD4148 (dual 1N4148-type diodes)
1N4148WT (single diode, compact version)
These provide similar fast-switching performance and are pin-compatible in many layouts.
Conclusion
The Nexperia BAW56 is a compact, reliable, and fast-switching dual diode, essential for modern electronic designs where space and performance matter.
With its low forward voltage, rapid response time, and automotive-grade variants, it supports a wide range of applications from consumer electronics to industrial control.
Futuretech Components is your trusted distributor for BAW56 and other discrete semiconductors.
We offer authentic sourcing, fast delivery, and technical expertise to support your design and production needs.
📩 Looking for BAW56 or similar components? Reach out to Futuretech Components today for datasheets, expert advice, or a competitive quote.
FAQ
What is BAW56?
The BAW56 is a dual high-speed switching diode in a SOT-23 package, designed for low-power, high-speed signal switching and protection circuits.
How Does the BAW56 Work?
It allows current to flow in one direction and blocks it in the opposite, with fast transition times. Internally, it connects two diodes in series, suitable for waveform shaping, signal routing, and overvoltage protection.
What Are the Key Specifications of BAW56?
Reverse Voltage: 75V
Forward Current: 150mA
Reverse Recovery Time: 4ns
Power Dissipation: 200mW
Package: SOT-23
Junction Temperature: Up to 150°C
What Are the Pros and Cons of BAW56?
Pros:
Fast switching speed (4ns)
Space-saving SOT-23 package
AEC-Q101 qualified versions available
RoHS compliant
Ideal for signal protection and level shifting
Cons:
Not suitable for high-current applications (>150mA)
Surge capability limited to short pulses
Are There Any Equivalents/Alternatives to BAW56?
Yes. Alternatives include:
BAV99 – similar dual configuration and fast recovery
MMBD4148 – general-purpose switching diodes in SOT-23
1N4148WT – compact, single high-speed diode
These can serve as direct replacements based on your circuit's voltage, current, and footprint requirements.
