document number: 23098 revision 14-may-02 www.vishay.com 30 15dk, 20dk, 30dk, 40dk, 10KT, 15kt, 20kt, 30kt, 40kt series vishay cera-mite ceramite.support@vishay.com l length size max. code in. mm j .780 19.8 k .900 22.9 l 1.00 25.4 m 1.18 30.0 n 1.36 34.5 d diameter size max. code in. mm a .880 22.4 b 1.05 26.7 c 1.30 33.0 d 1.55 39.4 e 1.80 45.7 f 2.13 54.1 g 2.30 58.4 h 2.42 61.5 terminal adaptors #8-32nc-2b adapters. order separately as required. 75-134a typical applications 75-135a 75-136a cap catalog size pf number d code l code 1500 15dkd15 b k 2000 15dkd20 c k 3300 15dkd33 d k 4700 15dkd47 d k .01 uf 15dks10 g k 15,000 vdc; 4,000 vrms, 60hz type dk capacitor class iii y5u temp. coefficient cap tol. +80% - 20% df: 2% max @ 1 khz cap catalog size pf number d code l code 500 20dkt50 a l 1000 20dkd10 c l 1300 20dkd13 c l 2500 20dkd25 d l 3300 20dkd33 e l 4700 20dkd47 f l 6800 20dkd68 h l 20,000 vdc; 5,000 vrms, 60hz cap catalog size pf number d code l code 500 30dkt50 b n 1000 30dkd10 c m 2500 30dkd25 d m 3300 30dkd33 f m 4700 30dkd47 g m 30,000 vdc; 7,000 vrms, 60hz cap catalog size pf number d code l code 300 40dkt30 a n 500 40dkt50 b n 780 40dkt78 c n 1000 40dkd10 d n 1600 40dkd16 e n 2500 40dkd25 f n 3300 40dkd33 g n 40,000 vdc; 9,000 vrms, 60hz type kt capacitor class i n4700 temp. coef cient cap tol. ?0% df: 0.2% max @ 1 khz cap catalog size pf number d code l code 1000 10KTd10 c j 2200 10KTd22 d j 3900 10KTd39 f j 4700 10KTd47 g j 10,000 vdc; 4,000 vrms, 60hz cap catalog size pf number d code l code 820 15ktt82 c k 1900 15ktd19 f k 3300 15ktd33 g k 15,000 vdc; 6,000 vrms, 60hz cap catalog size pf number d code l code 560 20ktt56 c l 1000 20ktd10 d l 1900 20ktd19 f l 2700 20ktd27 h l 20,000 vdc; 8,000 vrms, 60hz cap catalog size pf number d code l code 400 30ktt40 c m 660 30ktt66 d m 1200 30ktd12 f m 1800 30ktd18 h m 30,000 vdc; 10,000 vrms, 60hz cap catalog size pf number d code l code 300 40ktt30 c n 640 40ktt64 e n 1000 40ktd10 f n 1300 40ktd13 h n 40,000 vdc; 13,000 vrms, 60hz 715c series heavy duty high voltage capacitors 10 to 40kv molded epoxy case dk general purpose type, eia class iii applications: high voltage power supplies, crts, lasers. smallest size available. kt special purpose type, eia class i applications: high voltage power supplies, crts, lasers. greater capacitance stability. features low df and low heating, low dc & ac voltage coefficient. tighter tolerance on capacitance. highest ac voltage ratings. performance characteristics: operating temperature range: -30 c to +85 c storage temperature range: -40 c to +100 c dielectric strength: 150% of rated voltage, charging current limited to 50ma. insulation resistance: 200,000 megohms or 1000 ? f minimum at 25 c. corona limit: 50 picocoulombs at rated ac voltage. self resonant frequency: ranges from 50 mhz for small diameters to 10 mhz for large diameters. power dissipation: limit to 25 c rise above ambient, measured on case. kt series ceramic material is specially designed to handle ac current, due to low dissipation factor. -30 30 20 10 0 -10 -20 -30 -40 25 85 temp. ( c) % capacitance change kt series dk series horizontal output circuit crt h.v. focus high voltage ceramic capacitor applications where high dv/dt is present will operate at high peak currents (i p = dv/dt x c). capacitors should be evaluated in the actual circuit for dv/dt greater than 2000v/ microsecond. if repetitive, it may be necessary to use a series resistor or other impedance to limit peak currents to safe values. note: screw torque limit: 12 inch pounds. use #8-32, 3/16" long screw to prevent bottoming. l d #8-32nc-2b tapped holes fig 17 0.250 dia 0.437 0.015 0.187 flat no. 6-32 nc-2b thd 0.250 0.437 0.015 0.187 flat no. 8-32 nc-2b thd 0.375 0.250 dia no. 6-32 nc-2b int thd 0.312 0.437 0.015 0.250 dia 0.187 flat all tolerances 0.010 unless speci ed.
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