New MLCC dielectrics from Kemet
3 February 2010
Passive Components
Kemet has expanded its high-temperature product portfolio with the addition of new UltraStable X8R and X8L dielectric platforms. SMD MLCCs utilising these dielectrics feature a 150°C maximum operating temperature. Product applications include harsh environments such as down-hole (oil exploration), automotive (under the hood), military and aerospace.
UltraStable X8R dielectric features a 150°C maximum operating temperature, with the same temperature capability as conventional X8R, but without the capacitance loss due to applied DC voltage. UltraStable X8R exhibits no capacitance loss and is a suitable replacement for higher capacitance and larger footprint devices that fail to offer capacitance stability. Six standard package options are available which include EIA 0402, 0603, 0805, 1206, 1210, and 1812 case sizes. Devices are available in DC voltage ratings of 25 V, 50 V and 100 V, with capacitance offerings ranging from 10 pF to 0,22 μF. Capacitance tolerance offerings include ±1%, ±2%, ±5%, ±10% and ±20%, with capacitance shift limited to ±15% from -55°C to +150°C.
X8L dielectric offers an operating temperature range from -55°C to +150°C with capacitance shift limited to ±15% from -55°C to +125°C and +15/-40% from 125°C to 150°C. Five standard package options are available which include EIA 0402, 0603, 0805, 1206 and 1210 case sizes. Devices are available in DC voltage ratings of 10 V, 25 V and 50 V, with capacitance offerings also ranging from 10 pF to 0,22 μF. Capacitance tolerance offerings include ±5%, ±10% and ±20.
Both platforms are environmentally friendly in compliance with RoHS legislation and are being offered in both commercial and automotive grades with 100% pure matte tin-plated terminations that allow for excellent solderability. Sn/Pb termination is also available upon request, with a flexible termination option becoming available in the near future.
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