prm series high voltage/ high surge capability cost effective surface mount package available on rcd?s exclusive swift tm program options option er: group a screening per mil-r-39008 rcr option b: increased power option x: non-inductive pulse resistors, surface mount pulse tolerant surface mount resistors! series prm withstand high energy pulses, and are superior to conventional film & wirewound types. the heavy duty construction features a ceramic core, enabling improved thermal transfer and long term stability. elements are protected by flame-retardant molding for excellent environmental performance. alpha-numeric marking is standard. prm resistors are cost effective in a wide variety of pulse applications including telecom line feed resistors, snubber circuits, in- rush currents, capacitor charge/discharge circuits, lightning surges, etc. specifications typical performance characteristics 1 rated continuous voltage = ( pxr), nte value listed. 2 pulse voltage capability is dependent on res.value, waveform, & repetition rate. 3 expanded range available 4 miltiply by 0.7 on opt.x parts * specify opt.75 for induc levels 50% that of opt.x, or opt.76 for 33% that of opt.x a ------ ------ b .010? typ prm1/2,.050? prm1 d c e surge capability 100 10 1 0.1 energy rating, joules resistors capacitors c oils delay lines d c r e p y t g n i t a r e g a t t a w b t p o d t s . x a m e g a t l o v 4 , 3 , 1 k a e p . x a m e g a t l o v e s l u p 4 , 2 e c n a t s i s e r e g n a r ] m m [ h c n i s n o i s n e m i d a bcd efgh 8 / 1 m r pw 5 . w 5 2 1 .v 0 5 1v k 21 . 0 ? k 2 - 2 0 . 0 0 2 . ] 5 . 1 . 5 [ 5 1 0 . 6 9 0 . ] 8 3 . 4 4 . 2 [ 1 0 . 0 2 1 . ] 5 2 . 8 1 . 3 [ . n i m 5 2 0 . ] 3 6 . [ 5 1 0 . 5 4 0 . ] 8 3 . 4 1 . 1 [ 0 8 0 . ] 0 . 2 [ 0 0 1 . ] 5 . 2 [ 8 0 . ] 0 . 2 [ 4 / 1 m r pw 1 w 5 2 .v 0 5 2v k 5 . 31 . 0 ? k 0 1 - 2 0 . 8 5 2 . ] 5 . 5 5 . 6 [ 5 1 0 . 0 1 1 . ] 8 3 . 9 7 . 2 [ 5 1 0 . 0 5 1 . ] 8 3 . 1 8 . 3 [ . n i m 2 3 0 . ] 8 . 0 [ 5 1 0 . 0 6 0 . ] 8 3 . 5 . 1 [ 0 0 1 . ] 5 . 2 [ 5 2 1 . ] 2 . 3 [ 0 2 1 . ] 0 . 3 [ 2 / 1 m r pw 2 w 5 .v 0 5 3v k 51 . 0 ? k 4 2 - 4 2 0 . 2 7 4 . ] 6 . 2 1 [ 2 0 . 8 0 2 . ] 5 . 3 . 5 [ 6 1 0 . 8 2 2 . ] 4 . 8 . 5 [ . n i m 0 5 0 . ] 7 2 . 1 [ 2 0 . 0 7 0 . ] 5 . 8 7 . 1 [ 0 6 1 . ] 0 . 4 [ 0 8 1 . ] 7 5 . 4 [ 0 0 2 . ] 0 . 5 [ 1 m r pw 4 w 1v 0 0 5v k 0 11 . 0 ? k 0 0 1 - 0 2 0 . 1 1 8 . ] 5 . 6 . 0 2 [ 0 2 0 . 5 7 2 . ] 5 . 9 9 . 6 [ 0 2 0 . 3 7 2 . ] 5 . 3 9 . 6 [ . n i m 3 6 0 . ] 6 . 1 [ 8 2 0 . 2 0 1 . ] 7 . 6 . 2 [ 0 0 2 . ] 0 . 5 [ 0 0 2 . ] 0 . 5 [ 0 0 6 . ] 2 . 5 1 [ g n i t a r e d e g a t t a w d e t a r e d e b o t b . t p o ( c 0 7 > c / % 5 2 . 1 ) c 5 2 > c / % 8 . 0 * c u d n i . x a m:x . t p o 0 5 ? * c u d n i . x a m:x . t p o > 0 5 ? 1 m r p h u 3 . , 2 / 1 - 8 / 1 m r p h u 2 . 0 1 m r p h u 6 . , 2 / 1 - 8 / 1 m r p h u 7 3 . 0 d a o l r e v o e m i t - t r o h s% 5 . 0 g n i l c y c e r u t a r e p m e t% 5 . 0 ) . l i a v a m p p 0 2 ( r c t2 . 0 < ( c / m p p 0 2 1 ? ) m p p 0 0 2 = e c n a t s i s e r e r u t s i o m% 1 n o i t a r b i v d n a k c o h s% 2 . 0 g n i r e d l o s f o t c e f f e% 2 . 0 t n e i c i f f e o c e g a t l o vv / % 5 0 0 . 0 e f i l d a o lb . t p o % 1 , d t s % 5 . 0 e g n a r p m e t g n i t a r e p o. l i a v a c 5 7 2 + , c 0 5 1 + o t 5 5 - h t g n e r t s c i r t c e l e i d) . l i a v a v k 1 ( v 0 0 5 fa005e sale of this product is in accordance with gf-061. specifications subject to change without notice. rohs term.w is rohs compliant & 260c compatible use chart above to select model to meet desired surge level. pulse not to exceed peak v & j ratings (derate 30% for opt.x), and average power during repetitive pulses nte rated w. 30% safety factor is recommended for infrequent pulses, 50% typ. for repetitive pulses (request note r42 for derating factors attributable to pulse width, rep. rate, temp., altitude, humidity). verify by evaluating under worst-case conditions. depending on specifics, pr series can often satisfy the surge requirements of ul-217, -268, -294, -497, -508, -913, -943, -991, -1459, -1971, ansi/ieee c62.41, ccitt (rec. k17), bellcore tr-nwt-001089 & tr-tsy-000057, csa c22.2-225, iec 664, iec 801.5, ieee587, can.doc. cs-03, fcc part 68., etc. consult factory for assistance. application note rcd components inc, 520 e. industrial park dr, manchester, nh, usa 03109 rcdcomponents.com tel: 603 - 669 - 0054 fax: 603 - 669 - 5455 email: sales@rcdcomponents.com 0.1 0.25 0.5 .75 1 2.5 5 7.5 10 25 50 75 100 250 500 750 1k 2.5k 5k 7.5k 10k 25k 50k 75k 100k resistance value (ohms) prm1 prm1/2 prm1/4 prm1/8 28 p/n designation: rcd type options : x, er, b (leave blank if std) packaging : b = bulk, t = tape & reel prm1 - 102 - k t w tolerance : j=5% (standard), f=1%, g=2%, k=10% optional tc : 20 =20ppm, 50= 50ppm (leave blank if standard) resis. code 1% tol: 3 signif. figures & multiplier, e.g. r100=0.1 ?, 1r00=1 ?, 10r0=10 ? , 1000=100 ?, 1001=1k . 2%-10%: 2 signif.fig. & multiplier (r10=0.1 ?, 1r0=1 ?, 100=10 ?, 102=1k ) termination: w= lead-free, q= tin/lead (leave blank if either is acceptable, in which case rcd will select based on lowest price and quickest delivery) suggested pad layout f h g
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