PR SERIES
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Term.”W” is Pb-free and RoHS compliant; □ Cost effective high-voltage surge resistors to 200 joules □ Available on RCD’s exclusive SWIFT™ program □ Molded surface mount version available (PRM series) OPTIONS □ Opt. ER: Group A Screening per MIL-R-39008 RCR □ Opt. F: Flameproof coating □ Opt. B: Increased power (see Specifications table) □ Opt. X: Non-inductive (see Performance Char. table) □ Custom marking, cut & form, burn-in, etc. Excellent Low Cost Replacement for Composition Resistors Series PR pulse resistors withstand higher energy pulses than conventional film & wirewound types, without the performance disadvantages of carbon comp resistors. The heavy duty construction features a high thermal conductivity core and coating, enabling improved stability and environmental performance. Series PR satisy a wide variety of pulse applications including lightning, snubber, in-rush current, capacitor charge, etc. RoHS (Sn) or Mil-spec (Sn-Pb) termination finish available. 1 Max voltage = V(PxR), not to exceed value listed. 2 Pulse voltage & energy capability is dependent on res.value, waveform, repetition rate, & environmental conditions (refer to R-42 for derating factors). 3 .040” (1mm) lead dia. is available on PR1 (specify PR1-18), .032” [,8mm] lead dia. is available on PR2 (specify PR2-20) 4Lead length is for bulk packaging, taped parts may be shorter (consult taping dimensions). 5 Expanded range avail. 6Allow .024” [.6mm] additonal for Opt. X or values <1W 7 Specify Opt. 56 for 1.5” [38.1] min. lead length, Opt. 70 for 2” [50.8] lead length 8Multiply by 0.7 on Opt.X parts. SURGE CAPABILITY Derating, Wattage & Voltage * specify Opt.75 for induc levels 50% that of Opt.X, or Opt.76 for 33% that of Opt.X APPLICATION NOTE 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. A safety factor of 30% typ. is recommended for infrequent pulses, 50% typ. for repetitive pulses (refer to 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. P/N DESIGNATION: PR1/2 11 - 102 - K T 11 W Options: X, S, F, ER, B (leave blank if std)- Resis. Code 1% tol: 3 signif. figures & multiplier, e.g. R100=0.1W, 1R00=1W, 10R0=10W, 1000=100W, 1001=1K. 2%-10%: 2 signif.fig. & multiplier (R10=0.1W, 1R0=1W, 100=10W, 102=1K) Tolerance: J=5% (standard), F=1%, G=2%, K=10% Packaging: B = bulk, T = Tape & Reel- Optional TC: 20 =20ppm, 50= 50ppm (leave blank if standard)- Termination: W= RoHS (std), Q= Tin/Lead (leave blank if either is acceptable) 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 FA029k Sale of this product is in accordance with GF-061. Specifications subject to change without notice.