CG0402MLU-3.3G Varistor: High-Quality Circuit Protection by Bourns Inc.

The CG0402MLU-3.3G varistor from Bourns Inc., a global leader in electronic components, delivers exceptional circuit protection in an ultra-compact 0402 package. Designed for modern electronics, this multilayer ceramic varistor (MLCV) provides reliable defense against voltage transients while minimizing footprint and signal interference. Below we explore its technical specifications, advantages, and applications to help engineers select optimal protection for their designs.

Detailed Product Specifications

Electrical Characteristics

• Rated Voltage: 3.3V DC Perfect for low-voltage digital circuits
• Clamping Voltage: Optimized for sensitive IC protection
• Capacitance: Ultra-low 0.5pF @ 1MHz preserves signal integrity
• Response Time: Nanosecond-level reaction to transients

Physical Attributes

• Package: 0402 (1005 metric) surface-mount
• Dimensions: 1.0mm 0.5mm 0.5mm
• Termination: Nickel barrier with tin plating

Environmental Ratings

• Temperature Range: -40 C to +125 C operation
• Compliance: RoHS compliant, halogen-free

Key Advantages

Space-Saving Design

The 0402 package enables protection in space-constrained applications like:

• Wearable devices
• Mobile phone PCBs
• IoT sensor modules

Enhanced Signal Integrity

With just 0.5pF capacitance, this varistor minimizes:

• Signal distortion in high-speed interfaces
• Insertion loss in RF circuits
• Data corruption in digital buses

Robust Protection

Engineered to withstand:

• ESD events (IEC 61000-4-2)
• Electrical fast transients
• Surge pulses

Comprehensive Applications

Consumer Electronics

• Smartphone charging circuits
• Tablet display interfaces
• TWS earphone PCBs

Automotive Systems

• ADAS sensor protection
• Infotainment I/O ports
• Telematics modules

Industrial Equipment

• PLC input/output protection
• Sensor network nodes
• HMI interfaces

Design Considerations

When implementing the CG0402MLU-3.3G:

1. Place close to protected ICs for optimal performance
2. Ensure proper PCB pad design per Bourns recommendations
3. Consider parallel use for higher energy absorption
4. Verify compatibility with reflow soldering profiles

Why Choose Bourns Varistors?

Bourns Inc. brings 75+ years of component expertise to this product, offering:

• Industry-leading reliability testing
• Global manufacturing quality
• Comprehensive technical support
• Full documentation including SPICE models

Purchasing Information

The CG0402MLU-3.3G is available through authorized distributors with:

• Multiple packaging options (tape & reel, cut tape)
• Competitive volume pricing
• Fast shipping worldwide

For design assistance or samples, contact Bourns technical support or visit our product page for detailed datasheets and application notes.