Cal-Chip GMC Chip Multilayer Ceramic Capacitors
Quick Overview
GMC Series MLCC Capacitors - Low to Mid Voltage 4V to 200V Applications
Cal-Chip GMC Series Multilayer Surface Mount Ceramic Capacitors are constructed by screen printing alternative layers of internal metallic.
Details
Cal-Chip GMC Series MLCC Capacitors offers complete, ultra stable Class I dielectrics with linear temperature coefficients, low loss, and a negligible change of electrical properties with time, voltage, and frequency.
Cal-Chip Multilayer Surface Mount Ceramic Capacitors are constructed by screen printing alternative layers of internal metallic electrodes onto ceramic dielectric materials and firing into a concrete monolithic body, then completed by application of metal end terminations which are fired to assure permanent bonding with the individual internal electrodes. Multilayer ceramic capacitors have various features such as large capacitance values in small sizes and excellent high frequency characteristics. Moreover, chip capacitors can be used on surface mount assembly equipment. Our fully integrated manufacturing and total quality control systems ensure unprecedented high standards of quality and reliability.
APPLICATIONS
- Can be used on surface mount assembly equipment
- Our fully integrated manufacturing and total quality control systems ensure unprecedented high standards of quality and reliability. Ultra stable class I dielectric: linear temperature coefficient, low loss, negligible change of electrical properties with time, voltage and frequency.
Features
- Large capacitance values in small sizes
- Excellent high frequency characteristics
Chip Capacitor Selection
Dielectric Type
The choice of dielectric is largely determined by the temperature stability required.
COG (NPO)
Capacitance change with temperature is 0-30ppm/°C which is less than -0.3%°C from -55°C to +125°C. Typical capacitance change with life is less than -0.1% for NPOs, one-fifth that shown by most other dielectrics. NPO formulations show no aging characteristics.
X7R/X5R
Its temperature variation of capacitance is within ±15% from -55°C to +125°C (-55°C to +85°C for X5R). The capacitance change is non linear.
Z5U
Despite their capacitance instability, Z5U formulations are very popular because of their small size, temperature range low ESL, low ESR and excellent frequency response. These features are particularly important for decoupling application where only a minimum capacitance value is required.
Y5V Y5V
formulations are for general purpose use in a limited temperature range. They have a wide temperature characteristic of +22% - 82% capacitance change over the operating temperature range of -30°C to +85°C. Y5Vs high dielectric constant allows the manufacture of very high capacitance values (up to 22MF) in small physical sizes.
Capacitance Value & Tolerance
Determined by circuit requirements. Note that chip prices decrease with lower capacitance value and looser tolerance.
Voltage
Determined by circuit requirements. Units are designed to exceed the withstanding voltage specification, i.e., the user need not incorporate an additional safety margin.
Capacitor Size
Select the smallest unit permitted by the circuit constraints that provides the required capacitance and voltage rating. All Cal-Chip capacitors conform to EIA specifications.
Capacitor Termination
Termination choice is largely determined by the chip attachment method. Silver-palladium is adequate for most applications involving soldering or solder reflow. Nickel barrier is standard and recommended for units exposed to repeated solder cycles, to minimize leaching of the termination.