The 1812GC472KAT1A is a Multilayer Ceramic Capacitor with Ni/Sn-plated termination, X7R dielectric and 1812 case. The high value, low leakage and small size are difficult parameters to obtain in capacitor for high voltage systems. The standard high voltage MLC chip capacitor meets this performance characteristic and is designed for applications such as snubbers in high frequency power converters, resonators in SMPS and high voltage coupling/DC blocking. Larger physical sizes than normally encountered chips are used to make high voltage MLC chip products. The temperature gradient during heating or cooling cycles should not exceed 4°C per second. The preheat temperature must be within 50°C of the peak temperature reached by the ceramic bodies through the soldering process.

High voltage chip designs exhibit low ESRs at high frequencies

KEMET’s X7R dielectric features a 125°C maximum operating temperature and is considered “temperature stable.” The X7R dielectric is a Class II material. Components of this classification are fixed, ceramic dielectric capacitors suited for bypass and decoupling applications or for frequency discriminating circuits where Q and stability of capacitance characteristics are not critical. X7R exhibits a predictable change in capacitance with respect to time and voltage and boasts a minimal change in capacitance with reference to ambient temperature. Capacitance change is limited to ±15% from −55°C to +125°C.

• Operating temperature range from −55°C to +125°C
• Capacitance range includes E24 decade values from 10pF to 47µF
• DC voltage ratings from 6.3V to 250V
• EIA 0402, 0603, 0805, 1206, 1210, 1808, 1812, 1825, 2220 and 2225 case sizes available
• Temperature stable dielectric
• Lead (Pb)-free, RoHS, and REACH Compliant
• Temperature stable dielectric

The TDK CGA series automotive grade class 2 multilayer ceramic chip capacitors. These capacitors are based on X7R dielectric material with perfect layering technique which ensures the precise placing of dielectric and electrode layers as well as the multilayer technology. High capacitance has been achieved through precision technologies that enable the use of multiple thinner ceramic dielectric layers. Typical applications include automotive engine control units, sensor modules, battery line smoothing and switching power supply smoothing.

• Capacitance values ranges from 1pF to 47µF based on dielectric material
• Case sizes 0201, 0402, 0603, 0805, 1206, 1210, 1812 and 2220 are available
• DC voltage rating of 6.3V to 50V
• Low ESL and excellent frequency characteristics
• Low self heating and high ripple resistance due to low ESR
• High temperature range of -55°C to 125°C
• Automotive grade
• AEC-Q200 qualified