rcd's prm series pulse resistant resistors are de- signed to replace carbon composition styles in numerous applications. the prm series feature a core composi- tion of ceramic and heavy duty wound element. the construction enables surge performance similar to or better than carbon composition resistors (depending on resistance value) and significantly improved environmen- tal stability (see comparison chart). elements are protected by high-temp molded case for excellent envi- ronmental performance and 500v minimum dielectric strength. prm resistors are cost effective in a wide variety of pulse applications including telecom line feed resistors which must withstand lightning surges,snubber circuits, in-rush currents, capacitor charging and discharge circuits, etc. rcd prm series carbon comp insulation resistance 10,000mw min 10,000mw min voltage coefficient .005%/v max .007% - .03%/v load life 0.5% max 6% max short time overload 0.5% max 1%-2.5% max terminal strength 0.2% max 1% max effect of solder heat 0.2% max 2%-3% max vibration 0.2% max 1% max shock 0.2% max 2% max humidity resistance 1% max 11% max low temp. operation 0.5% max 2% max temperature cycling 0.5% max 2% max temp. coefficient .012%/c max -.046 to +.12%/c operating temp. -65c to +155c -65c to +150c wattage derating 1.176%/c>70c 1.25%/c>70c pulse resistors, surface mount prm series fa005 specifications subject to change without notice rcd components inc., 520 e. industrial park dr., manchester, nh, usa 03109 tel: (603) 669-0054 fax:(603) 669-5455 e-mail: rcdcompinc@aol.com www.rcd-comp.com available surge standards depending on resistance value, rcd's prm series can satisfy surge requirements of the following standards: ul1971 ansi/ieee c62.41 ul217 bellcore tr-nwt-001089 ul268 bellcore tr-tsy-000057 ul294 ieee587 ul497a canadian doc. cs-03 ul508 ccitt (rec. k17) ul913 csa c22.2 no.225 ul943 iec 664 & 801.5 ul991 fcc part 68 ul1459 rea (pe60) performance comparison chart r surface-mount version of rcd's popular pr series r cost effective r high voltage pulse capability r insensitive to moisture r available on exclusive swift ? delivery program options r x = non-inductive design r er = group a screening per mil-r-39008 (rcr) features resist ors w coils w delay lines rcd ty p e wa tta ge @ 70 c resistance range wo rkin g vo lta ge peak pulse* abcde prm1/8 1/8w 0.1 w to 2k 150v 3kv .260.02 [6.6.5] .110.015 [2.8.38] .150.015 [3.8.38] .040 min.[1.0] .060.015 [1.5.38] prm1/4 1/4w 0.1 w to 8.2k 250v 5kv .260.02 [6.6.5] .110.015 [2.8.38] .150.015 [3.8.38] .040 min. [1.0] .060.015 [1.5.38] prm1/2 1/2w 0.1 w to 24k 350v 7kv .445.032 [11.3.8] .180.020 [4.6.5] .225.015 [5.7.38] .080 min. [2.0] .060.015 [1.5.38] prm1 1w 0.1 w to 100k 500v 12kv .811.018 [20.6.46] .275.010 [7.0.25] .273.010 [6.9.25] .085.02 [2.15] .110.02 [2.792.15] a e ? ? c ? ? b d ? ? *peak pulse voltage is highly dependent on pulse waveform and resistance value. voltage levels given indicate the maximum levels for the series. these levels are not attainable for all values and plse waveforms. contact factory for application assistance. specifications preliminary p/n designation: rcd type options : x, er, (leave blank if standard) packaging : b = is bulk, t = tape & reel prm1/2 - 1001 - j t 4-digit res. code : 3 sig. digits & multiplier. r100=0.1 w, 1r00=1 w, 1000=100 w, 1001=1k w tolerance code : k=10%, j=5%, h=3%, g=2%, f=1%
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