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PULSE RESISTORS, SURFACE MOUNT
RESISTORS CAPACITORS COILS DELAY LINES
PRM SERIES
OPTIONS
RoHS
Term.W is RoHS compliant & 260C compatible
High voltage/ high surge capability Cost effective surface mount package Available on RCD's exclusive SWIFT TM program Option ER: Group A Screening per MIL-R-39008 RCR Option B: Increased power Option X: Non-inductive
A
D
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, inrush currents, capacitor charge/discharge circuits, lightning surges, etc.
G F SUGGESTED PAD LAYOUT
C
B
.010" typ PRM1/2,.050" PRM1 ------
E
------
H
SPECIFICATIONS
RCD Type
PRM1/8 PRM1/4 PRM1/2 PRM1
1
Wattage Rating Max. Max. Peak Resistance Std Opt B Voltage1,3,4 Pulse Voltage2,4 R an g e
.125W .25W .5W 1W .5W 1W 2W 4W 150V 250V 350V 500V
2
DIMENSIONS Inch [mm] A
.200 .02 [5.1 .5] .258 .02 [6.55 .5] .472 .024 [12 .6]
B
C
D
.025 Min. [.63] .032 Min. [0.8] .050 Min. [1.27] .063 Min. [1.6]
E
.045 .015 [1.14 .38] .060 .015 [1.5 .38] .070 .02 [1.78 .5] .102 .028 [2.6 .7]
4
F
.080 [2.0] .100 [2.5] .160 [4.0] .200 [5.0]
G
.100 [2.5] .125 [3.2]
H
.08 [2.0] .120 [3.0]
2K V 3.5KV 5K V 10K V
0.1 - 2K 0.1 -10K 0.1 -24K 0.1 -100K
.096 .015 .120 .01 [2.44 .38] [3.18 .25] .110 .015 .150 .015 [2.79 .38] [3.81 .38] .208 .02 .228 .016 [5.3 .5] [5.8 .4]
.180 .200 [4.57] [5.0] .200 .600 [5.0] [15.2]
.811 .020 .275 .020 .273 .020 [20.6 .5] [6.99 .5] [6.93 .5]
3
Rated continuous voltage = (PxR), nte value listed.
Pulse voltage capability is dependent on res.value, waveform, & repetition rate.
Expanded range available
Miltiply by 0.7 on Opt.X parts
SURGE CAPABILITY
100
Energy Rating, Joules
10
PRM1 PRM1/2
1
PRM1/8
PRM1/4
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)
1K
2.5K
5K 7.5K 10K 25K 50K 75K 100K
TYPICAL PERFORMANCE CHARACTERISTICS
Wattage Derating Max.Induc*: Opt. X50 Max.Induc*: Opt. X>50 Short-time Overload Temperature Cycling TCR (20ppm avail.) Moisture Resistance Shock and Vibration Effect of Soldering Voltage Coefficient Load Life Operating Temp Range Dielectric Strength 1.25%/C >70C (Opt. B to be derated 0.8%/C >25C) 0.2uH PRM1/8-1/2, .3uH PRM1 0.37uH PRM1/8-1/2, .6uH PRM1 0.5% 0.5% 120ppm/C (<0.2=200ppm) 1% 0.2% 0.2% 0.005%/V 0.5% Std, 1% Opt.B -55 to +150C, +275C avail. 500V (1KV avail.)
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:
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=0.1, 1R00=1, 10R0=10, 1000=100, 1001=1K. 2%-10%: 2 signif.fig. & multiplier (R10=0.1, 1R0=1, 100=10, 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)
* specify Opt.75 for induc levels 50% that of Opt.X, or Opt.76 for 33% that of Opt.X
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
FA005E Sale of this product is in accordance with GF-061. Specifications subject to change without notice.
28

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