Application Guide Radial-Leaded Mica Capacitors Specifications Capacitance is within tolerance when measured at these frequencies: 1–1000 pF @ 1MHz > 1000 pF @ 1 kHz Temperature Coefficient and Pulse Handling: Standard dipped Capacitance Drift: Measure the capacitors will withstand an unlimited capacitors’ capacitance at 25 ºC, –55 ºC, 25 ºC, 125 ºC (or 150 ºC) and at 25 ºC after stabilizing at each Dissipation Factor limits are temperature. The capacitance will meet below. Dissipation factor is equal to the limits of the Characteristic table DF=2πfRC, where f is the test shown in Ordering Information. frequency, R is the equivalent series resistance, and C is the capacitance. Solderability: After an eighthour For other capacitance values, see steam aging, coat leads with rosin flux Figure 1. (R) and immerse in molten 245 ºC ±5% 60/40 tin/lead solder. Solder Capacitance Dissipation Factor coverage will be no less than 95% when 75–1,000 pF 0.00075 max at 1 MHz examined at 10X magnification. 1,100–3,300 pF 3,600–9,100 pF 10,000 pF 0.0014 max at 1 kHz 0.0013 max at 1 kHz 0.0012 max at 1 kHz number of pulses with a dV/dt of 100,000 V/µs tested per IEC 384-1. Smaller capacitance ratings can withstand even faster dV/dt—ratings have been tested one million discharges at rated voltage into a 4.7 Ω resistor with no change in capacitance. For a 100 pF, 500 Vdc unit, that’s a peak dV/ dt in excess of 1,000,000 V/µs. The dV/dt is expressed by this relationship: dV/dt = V RdC V = rated voltage, Vdc Rd = minimum discharge resistor, Ω C = rated capacitance, µF This is the initial rate of discharge into Rd. Surge Voltage: Standard dipped capacitors will withstand 500 Vdc max Quality Factor (Q) is the reciprocal peak transients above rated voltage. For example, in flyback regulators with of dissipation factor. less than 500 Vdc bias, you may use 500 Vdc-rated capacitors provided that Marking is in accordance with EIA Insulation Resistance for the switching transient peaks are less RS153B and includes “CD” as our capacitances up to 10,000 pF is greater than 1,000 V. manufacturer’s symbol, nominal than 100 GW at 25 ºC and greater than capacitance in pF, capacitance 10 GW at 125 ºC. For other Voltage Coefficient: The change tolerance, and dc working voltage capacitance values and temperatures, in capacitance from 0 volts to rated followed by V, if other than 500 Vdc. see Figure 2. voltage is less than 0.1%. Miniature dipped units (CD6 and CD7) are marked with capacitance in pF and Withstanding Voltage is 2 times tolerance letter designation. the rated voltage, and can be applied up to 5 seconds without damage. MIL-C-5 units (Type CM) are in accordance with MIL-C-5. 0.1000 100,000 +25 ºC +85 ºC IR (M ) DF (%) 0.0100 0.0010 Maximum DF a 1 kHz for capacitance values greater than 1,000 pF Maxiumm DF at 1 MHz for capacitance values of 1,000 pF or less 10,000 +125 ºC +150 ºC 1,000 62,000 100 0.0001 1 10 100 1,000 Capacitance (pF) Figure 1. DF vs. Capacitance 10,000 100,000 1 10 100 1,000 10,000 100,000 Capacitance (pF) Figure 2. IR vs. Capacitance Cornell Dubilier • 1605 E. Rodney French Blvd. • New Bedford, MA 02744 • Phone: (508)996-8564 • Fax: (508)996-3830 • www.cde.com 6.020 Application Guide Radial-Leaded Mica Capacitors Specifications Moisture Resistance: 24-Hour Moisture Resistance Cycle Capacitors will meet the requirements of MIL-STD-202, Method 106F as outlined here and diagrammed on the right. Refer to MIL-STD-202 for details. For miniature Types CD6 and CD7, use one 24-hour cycle rather than 10. 1. Dry capacitors for 24 hours in a 50 ±2 ºC oven and then allow to stabilize at room temperature. 2. Subject the capacitors to 10 24- hour continuous cycles with relative humidity and temperature as shown. 65 ±2 ºC 90-98 RH 8 1-4 3 25 ±2 ºC 90-98 RH 2½ 3 2½ 2½ 3 2½ hours –10 ±2 ºC Uncontrolled Humidity 3. 24 hours after completion of the last cycle, the capacitors will show no visual damage and will meet the after-test limits below. Life Test: Subject the capacitors to maximum operating temperature (+125 ºC or +150 ºC) with 1.5 times rated voltage applied for 2,000 hours. There will be no visual damage and the capacitors will meeet the after-test limits below After-Test Limits Test Moisture Resistance Lift Test OL = Initial Limit Withsatnd Voltage IL IL Insulation Resistance 30 GΩ IL Capacitance Change (wichever is greater) NV ±1% or ±1 pF NV ±1% or ±1 pF DF Q 150% IL 150% IL 2/3xIL 2/3xIL NV = Nominal Value Cornell Dubilier • 1605 E. Rodney French Blvd. • New Bedford, MA 02744 • Phone: (508)996-8564 • Fax: (508)996-3830 • www.cde.com Application Guide Radial-Leaded Mica Capacitors Specifications — Dipped Mica Capacitors for Auto Insertion T max. L max. For high-volume auto insertion applications, the best value choice is Type CDA15. Reel packing is also available for Types CD4, CD5, CD6, CD7, CD10, CD15, CD17, CD19, CM04, and CM05. H max. .078 .250 ±.051 .354 + .030 .709 + .039 – .020 – .020 .202 ±.028 .035 max. h ± .020 S ± .031 Reel Packing with 0.200” lead spacing is available for Types CD5, CD6, CD7, and CD10. To order 0.200” lead spacing, change the Catalog Number by inserting the letter “A” in the CDE Type. Example: Type CD5 capacitors, reel packed with 0.200" lead spacing, is designated as Type CDA5. .157 ± .012 .500 ± .012 Lead Configuration A B See the table below for available reel-packed types, lead configurations, lead spacing, lead material, pieces per reel and pieces per ammo packs. Packaging will be in accordance with EIA-468. Dimension “h” will be 16mm for formed leads or 18mm for straight leads. 20mm is available on special request. Specify reel or ammo on your purchase order. C Type Number Lead S pacing Lead Configuration Lead Material C D4 0.100 A CCS C D5 0.120 A C DA5 0.200 B C D6 C DA6 C D7 0.172 0.200 0.172 C DA7 D10 C D10/C M 04 C DA10 0.200 CCS A CCS A A (up to 820 pF) C (All v alues) CCS 0.141 A 0.200 C 0.234 A CCS C D16 C DV16 0.234 A CCS C DA15 C DA17 0.200 A, C C opper C D19 0.344 A CCS C D15/C M 05 C D17 For tape and reel or ammo-packed packaging, specify on the order. CCS Range of Pieces per Reel Range of Pieces per Ammo Pack 1– 560 pF 561– 780 pF 781–1500 pF 1–158 pF 159–256 pF 257–400 pF 1000–2500 1000–2000 1000–1500 1000–2500 1000–2000 1000–1500 1000–2000 1000–1500 1000 1000–2000 1000–1500 1000 1– 120 pF 1000–2500 1000–2000 1– 560 pF 561– 780 pF 781–1500 pF 1– 265 pF 266– 470 pF 471–1200 pF 1– 330 pF 331– 470 pF 471–1500 pF 1– 330 pF 331– 470 pF 471–1500 pF 1501–2000 pF > 2000 pF 1– 330 pF 331– 470 pF 471–1500 pF 10-1000 pF 1001-1500 pF 1501–3000 pF 3001-5000 pF 1000–2500 1000–2000 1000–1500 1000–2500 1000–2000 1000–1500 1000–2500 1000–2000 1000–1500 1000–2500 1000–2000 1000–1500 800 500 1000–2500 1000–2000 1000–1500 1000 800 600 400 1000–2000 1000–1500 1000 1000–2000 1000–1500 1000 1000–2000 1000–1500 1000 1000–2000 1000–1500 1000 600 600 1000–2000 1000–1500 1000 800 800 600 400 Capacitance Range CCS = copper clad steel CDE indicates 0.200” lead spacing for a bulk part. If you want it configured for auto insertion, it must be so noted on the order (i.e. tape/reel or ammo pack the referenced parts) Cornell Dubilier • 1605 E. Rodney French Blvd. • New Bedford, MA 02744 • Phone: (508)996-8564 • Fax: (508)996-3830 • www.cde.com