PULSE RESISTORS, SURFACE MOUNT PRM SERIES Term.W is RoHS compliant & 260°C compatible RoHS High voltage/ high surge capability Cost effective surface mount package Available on RCD’s exclusive SWIFT TM program Pulse tolerant surface mount resistors! OPTIONS Option ER: Group A Screening per MIL-R-39008 RCR Option B: Increased power Option X: Non-inductive C A ↑ B ↓ → D ← ↑ ↓ RESISTORSCAPACITORSCOILSDELAY LINES 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, inrush currents, capacitor charge/discharge circuits, lightning surges, etc. ←G→ ------ .010” typ PRM1/2,.050” PRM1 ← E → ------ H ↑ F ↓ SUGGESTED PAD LAYOUT SPECIFICATIONS RCD Type DIMENSIONS Inch [mm] Wattage Rating Max. Max. Peak Resistance Std Opt B Voltage1,3,4 Pulse Voltage2,4 R an g e A D E F G H .096± .015 .120 ± .01 [2.44± .38] [3.18± .25] B C .025 Min. [.63] .045 ± .015 [1.14 ± .38] .080 [2.0] .100 [2.5] .08 [2.0] .120 [3.0] PRM1/8 .125W .5W 150V 2K V 0.1Ω - 2K .200 ± .02 [5.1 ± .5] PRM1/4 .25W 1W 250V 3.5KV 0.1Ω -10K .258 ± .02 [6.55 ± .5] .110± .015 .150± .015 [2.79± .38] [3.81± .38] .032 Min. [0.8] .060 ± .015 [1.5 ± .38] .100 [2.5] .125 [3.2] PRM1/2 .5W 2W 350V 5K V 0.1Ω -24K .472 ± .024 [12 ± .6] .208 ± .02 .228± .016 [5.3 ± .5] [5.8± .4] .050 Min. [1.27] .070 ± .02 [1.78 ± .5] .160 [4.0] .180 .200 [4.57] [5.0] PRM1 1W 4W 500V 10K V 0.1Ω -100K .811 ± .020 .275± .020 .273± .020 [20.6 ± .5] [6.99± .5] [6.93± .5] .063 Min. [1.6] .102 ± .028 [2.6 ± .7] .200 [5.0] .200 .600 [5.0] [15.2] Rated continuous voltage = √(PxR), nte value listed. 1 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 SURGE CAPABILITY Energy Rating, Joules 100 10 PRM1 PRM1/2 1 PRM1/4 PRM1/8 0.1 0.1 0.25 0.5 .75 1 2.5 5 7.5 10 25 50 75 100 250 500 750 Resistance Value (ohms) TYPICAL PERFORMANCE CHARACTERISTICS Wattage Derating 1.25%/°C >70°C (Opt. B to be derated 0.8%/°C >25°C) Max.Induc*: Opt. X≤50Ω Max.Induc*: Opt. X>50Ω 0.2uH PRM1/8-1/2, .3uH PRM1 0.37uH PRM1/8-1/2, .6uH PRM1 Short-time Overload ±0.5% Temperature Cycling ±0.5% TCR (20ppm avail.) ±120ppm/°C (<0.2Ω=200ppm) Moisture Resistance ±1% Shock and Vibration ±0.2% Effect of Soldering ±0.2% Voltage Coefficient ±0.005%/V ±0.5% Std, ±1% Opt.B Operating Temp Range -55 to +150°C, +275°C avail. Dielectric Strength 500V (1KV avail.) * specify Opt.75 for induc levels 50% that of Opt.X, or Opt.76 for 33% that of Opt.X 2.5K 5K 7.5K 10K 25K 50K 75K 100K 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. 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. P/N DESIGNATION: Load Life 1K PRM1 - 102 - K T W RCD Type Options: X, ER, B (leave blank if std) Resis. Code 1% tol: 3 signif. figures & multiplier, e.g. R100=0.1Ω, 1R00=1Ω, 10R0=10Ω, 1000=100Ω, 1001=1K. 2%-10%: 2 signif.fig. & multiplier (R10=0.1Ω, 1R0=1Ω, 100=10Ω, 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= Lead-free, Q= Tin/Lead (leave blank if either is acceptable, in which case RCD will select based on lowest price and quickest delivery) RCD Components Inc, 520 E.Industrial Park Dr, Manchester, NH, USA 03109 rcdcomponents.com Tel: 603-669-0054 Fax: 603-669-5455 Email:[email protected] FA005E Sale of this product is in accordance with GF-061. Specifications subject to change without notice. 28