Johanson - Multilayer Ceramic Capacitor with EMI Filtering

Applications:

• Amplifier FIlter & Decoupling
• High Speed Data Filtering
• EMC I/O Filtering
• FPGA / ASIC / μ-P Decoupling
• DDR Memory Decoupling

Advantages:

• One device for EMI suppression or decoupling
• Replace up to 7 components with one EMI
• Differential and common mode attenuation
• Matched capacitance line to ground, both lines
• Low inductance due to cancellation effect

Key Features:

• AEC-Q200 Automotive Qualification (as required)

Common Traits with Conventional MLCC:

• Same component sizes (0603, 0805, 1206, etc.)
• Same pick and place equipment
• Same voltage ratings
• Same dielectric, electrode and termination materials
• Same industry test standards for component reliability

The EMI^® capacitor design starts with standard 2 terminal MLC capacitor’s opposing electrode sets, A & B, and adds a third electrode set (G) which surround each A & B electrode. The result is a highly vesatile three node capacitive circuit containing two tightly matched, low inductance capacitors in a compact, four-terminal SMT chip.

EMI Filtering:
The EMI^® component contains two shunt or “line-to-ground” Y capacitors. Ultra-low ESL (equivalent series inductance) and tightly matched inductance of these capacitors provides unequaled high frequency Common-Mode noise filtering with low noise mode conversion. EMI^® components reduce EMI emissions far better than unbalanced discrete shunt capacitors or series inductive filters. Differential signal loss is determined by the cut off frequency of the single line-to-ground (Y) capacitor value of an EMI^®.

Power Bypass / Decoupling
For Power Bypass applications, EMI's^® two “Y” capacitors are connected in parallel. This doubles the total capacitance and reduces their mounted inductance by 80% or 1/5th the mounted inductance of similar sized MLC capacitors enabling high-performance bypass networks with far fewer components and vias. Low ESL delivers improved High Frequency performance into the GHz range.