Panasonic, a worldwide leader in Circuit Protection Products, introduces the EZJ Series of Multi-Layer Ceramic Varistors (MLCV’s).
The EZJ Series is well suited for the protection of sensitive circuitry from ESD damage.
■ Varistor Characteristics and Equivalent Circuit
A Multilayer Varistor does not have an electrical polarity like Zener diodes and is equivalent to total 3 pcs of 2 Zener diodes and 1 capacitor.
■ Replacement of Zener diode
Using a Multilayer Varistor to replace a “Zener diode & Capacitor” saves both the amount of space and number of components used.
The benefits of replacing TVS (Zener diode) to MLCV:
-size/weight reduction,
-lower cost
-good ESD/Surge solution at the same time
Characteristics Comparison MLCV vs. Zener Diode | ||
Characteristics | MLCV | Zener Diode |
ESD Suppression | Excellent | Excellent |
Deterioration Against ESD | Excellent | Good |
Allowable Power | Excellent | Fair |
Capacitance Change | Excellent | Poor |
Mounting Area | Excellent | Fair |
■ Features
• Varistor Voltage: 6.8 to 65 V
• Maximum Allowable Voltage: 3.7 to 40 VDC
• Operating Temperature Range: -40ºC to 85ºC
• Multi-Layer Monolithic Ceramic Construction
• Meets EIC61000-4-2 Level 4 Standard
• Ideal usage for USB 2.0, IEEE1394, and HDMI high speed data busses
• Reflow Soldering
• RoHS Compliant
■ Benefits
• Excellent ESD Suppression
• 8kV Contact Discharge Max ESD
• Use to Protect DC Voltage Lines and Low Speed Signal Lines
• Reduced Component Count and Real Estate Versus Using Zener Diodes
■ Industries
• Automotive
• Communications / Telecommunications
• LED Lighting
• USB
• LCD Panels
• Gaming
• Instrumentation
• Consumer Products
■ Applications
• ESD Protection for IC Inputs
• Bus Lines
• LED’s
