Murata GA3 Series SMD Safety-Certified Multilayer Ceramic Capacitors (Class X1/Y2 Safety MLCCs)

Model Code Breakdown

GA352Q: GA3 safety series, dimension code 5728 (Imperial 2211)R7: X7R temperature characteristic dielectricG: Safety class codeF: Rated AC voltage 250VAC102: Capacitance code, 10×10²=1000pF=1nF=0.001μFK: Capacitance tolerance ±10%W01: Electrode / construction specificationL: Tape-and-reel packaging specification (180mm reel)

II. Key Electrical Specifications

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III. Core Functions (Safety-Dedicated)

1. Safety Ground Filtering as Y Capacitor (Primary Application)Installed between live/neutral lines and earth to suppress common-mode EMI interference and high-frequency power noise radiation, complying with EMC electromagnetic compatibility standards.

2. Differential-Mode Auxiliary Filtering as X CapacitorUsed between L and N lines to suppress differential-mode interference. X1 rating enables resistance against power grid surge pulses.

3. Safe Residual Voltage DischargeSlowly releases residual high voltage inside sockets and adapters after power-off to prevent electric shock hazards; it is a mandatory safety component for power supplies.

4. High-Frequency Noise Absorption at AC InputEliminates conducted interference generated by switching transistors and transformers, enabling devices to pass 3C, CE and FCC electromagnetic compatibility tests.

Note: Ordinary MLCCs without safety certification cannot be connected across AC live lines or earth. This component features X1/Y2 safety qualification and is exclusively designed for 220V mains AC input circuits; it cannot replace general power supply filtering capacitors.

IV. Scope of Application

1. Switching Power Supplies & Adapters (Main Application)

Chargers for mobile phones and laptops, PD fast-charging adapters, TV power boards, built-in switching power supplies for routers and optical modems, industrial AC-DC power modules.

2. Main Control Boards of Household Appliances

EMI filtering at AC input for air conditioners, refrigerators, washing machines, blenders, projectors, set-top boxes and air purifiers.

3. Industrial Equipment

Industrial control switching power supplies, servo drive power supplies, PLC power supply modules, AC input terminals of test instruments.

4. Lighting Driver Power Supplies

Safety filtering for 220V input of LED drivers, street light power supplies and panel light driver boards.

5. High-Power Consumer Devices

AC power supply circuits of robot vacuum cleaners, hair dryers, coffee machines and portable medical equipment.

V. Core Product Features

1. Dual X1/Y2 safety certifications, compatible with 250VAC mains power, meeting mandatory domestic and international standards such as 3C and CE.

2. X7R dielectric delivers stable performance across wide temperature ranges with minor attenuation of filtering performance under high/low temperatures.

3. SMD surface mount structure replaces traditional through-hole safety Y capacitors, reducing PCB footprint and fitting automated production lines.

4. Monolithic dense ceramic construction features low ESL, offering superior high-frequency filtering performance compared to film safety capacitors.

5. Excellent resistance against power grid surges and lightning pulses with high impact reliability.