X7R Dielectric General Specifications X7R formulations are called temperature stable ceramics and fall into EIA Class II materials. X7R is the most popular of these intermediate dielectric constant materials. Its temperature varia- tion of capacitance is within 15% from -55C to +125C. This capacitance change is non-linear. Capacitance for X7R varies under the influence of electrical op- erating conditions such as voltage and frequency. X7R dielectric chip usage covers the broad spectrum of industrial applications where known changes in capacitance due to applied voltages are acceptable. PART NUMBER (see page 2 for complete part number explanation) 0805 5 C 103 M A T 2 A Size Voltage Dielectric Capacitance Capacitance Failure Terminations Packaging Special ( x ) 4V = 4 X7R = C Code (In pF) Tolerance Rate 2 = 7 Reel Code T = Plated Ni 6.3V = 6 J = 5%* A = Not 4 = 13 Reel A = Std. Product 2 Sig. Digits + and Sn 10V = Z K = 10% Applicable 7 = Bulk Cass. Number of Zeros 7 = Gold Plated* 16V = Y M = 20% 9 = Bulk Z= FLEXITERM ** 25V = 3 50V = 5 *1F only, Contact 100V = 1 contact factory for *Optional termination Factory For 200V = 2 additional values 500V = 7 Multiples **See FLEXITERM X7R section NOTE: Contact factory for availability of Termination and Tolerance Options for Specific Part Numbers. Contact factory for non-specified capacitance values. X7R Dielectric Insulation Resistance vs Temperature Capacitance vs. Frequency Typical Temperature Coefficient 10,000 +30 10 5 +20 0 1,000 +10 -5 0 -10 -10 100 -15 -20 -20 -25 -30 0 -60 -40 -20 0 20 40 60 80 100 120 140 1KHz 10 KHz 100 KHz 1 MHz 10 MHz 0 20 40 60 80 100 120 Frequency Temperature C Temperature C Variation of Impedance with Cap Value Variation of Impedance with Chip Size Impedance vs. Frequency Variation of Impedance with Chip Size Impedance vs. Frequency Impedance vs. Frequency 1,000 pF vs. 10,000 pF - X7R 100,000 pF - X7R 0805 10,000 pF - X7R 10 10.00 10 1206 1206 1,000 pF 0805 0805 10,000 pF 1210 1210 1.0 1.00 1.0 0.1 0.10 0.1 .01 0.01 .01 110 100 1,000 10 100 1000 110 100 1,000 Frequency, MHz Frequency, MHz Frequency, MHz 17 Impedance, % Cap Change % Capacitance Impedance, Insulation Resistance (Ohm-Farads) Impedance, X7R Dielectric Specifications and Test Methods Parameter/Test X7R Specification Limits Measuring Conditions Operating Temperature Range -55C to +125C Temperature Cycle Chamber Capacitance Within specified tolerance 2.5% for 50V DC rating Freq.: 1.0 kHz 10% 3.0% for 25V DC rating Voltage: 1.0Vrms .2V Dissipation Factor 3.5% for 25V and 16V DC rating 5.0% for 10V DC rating 100,000M or 1000M - F, Charge device with rated voltage for Insulation Resistance whichever is less 120 5 secs room temp/humidity Charge device with 300% of rated voltage for Dielectric Strength No breakdown or visual defects 1-5 seconds, w/charge and discharge current limited to 50 mA (max) Note: Charge device with 150% of rated voltage for 500V devices. Appearance No defects Deflection: 2mm Capacitance Test Time: 30 seconds 12% Resistance to Variation 1mm/sec Flexure Dissipation Meets Initial Values (As Above) Stresses Factor Insulation Initial Value x 0.3 90 mm Resistance 95% of each terminal should be covered Dip device in eutectic solder at 230 5C Solderability with fresh solder for 5.0 0.5 seconds Appearance No defects, <25% leaching of either end terminal Capacitance 7.5% Variation Dip device in eutectic solder at 260C for 60 Dissipation Resistance to seconds. Store at room temperature for 24 2 Meets Initial Values (As Above) Factor Solder Heat hours before measuring electrical properties. Insulation Meets Initial Values (As Above) Resistance Dielectric Meets Initial Values (As Above) Strength Appearance No visual defects Step 1: -55C 2 30 3 minutes Capacitance 7.5% Step 2: Room Temp 3 minutes Variation Dissipation Thermal Meets Initial Values (As Above) Step 3: +125C 2 30 3 minutes Factor Shock Insulation Meets Initial Values (As Above) Step 4: Room Temp 3 minutes Resistance Dielectric Repeat for 5 cycles and measure after Meets Initial Values (As Above) Strength 24 2 hours at room temperature Appearance No visual defects Capacitance Charge device with 1.5 rated voltage ( 10V) in 12.5% Variation test chamber set at 125C 2C Dissipation for 1000 hours (+48, -0) Initial Value x 2.0 (See Above) Load Life Factor Insulation Remove from test chamber and stabilize Initial Value x 0.3 (See Above) Resistance at room temperature for 24 2 hours Dielectric before measuring. Meets Initial Values (As Above) Strength Appearance No visual defects Store in a test chamber set at 85C 2C/ Capacitance 12.5% 85% 5% relative humidity for 1000 hours Variation (+48, -0) with rated voltage applied. Load Dissipation Initial Value x 2.0 (See Above) Humidity Factor Remove from chamber and stabilize at Insulation Initial Value x 0.3 (See Above) room temperature and humidity for Resistance 24 2 hours before measuring. Dielectric Meets Initial Values (As Above) Strength 18