RoHS
RESISTORSCAPACITORSCOILSDELAY LINES
PULSE RESISTORS, SURFACE MOUNT
Term.W is
RoHS
PRM SERIES compliant
& 260C
compatible
High voltage/ high surge capability
Cost effective surface mount package Pulse tolerant surface mount resistors!
TM
Available on RCDs exclusive SWIFT program
Series PRM withstand high energy pulses, and are superior to
conventional film & wirewound types. The heavy duty construction
OPTIONS
features a ceramic core, enabling improved thermal transfer and long
Option ER: Group A Screening per MIL-R-39008 RCR
term stability. Elements are protected by flame-retardant molding for
Option B: Increased power
excellent environmental performance. Alpha-numeric marking is
Option X: Non-inductive
standard. PRM resistors are cost effective in a wide variety of pulse
applications including telecom line feed resistors, snubber circuits, in-
A C
rush currents, capacitor charge/discharge circuits, lightning surges, etc.
B
G
SUGGESTED
------ ------
H
F
D .010 typ PRM1/2,.050 PRM1
PAD LAYOUT
E
SPECIFICATIONS
DIMENSIONS Inch [mm]
RCD Wattage Rating Max. Max. Peak Resistance
1,3,4 2,4
Type Std Opt B Voltage Pulse Voltage Range
A BCD E F GH
.200 .02 .096 .015 .120 .01 .025 Min. .045 .015 .080 .100 .08
PWRM1/8.V125W .51V50 21K 0. - 2K
[5.1 .5] [2.44 .38] [3.18 .25] [.63] [1.14 .38] [2.0] [2.5] [2.0]
.258 .02 .110 .015 .150 .015 .032 Min. .060 .015 .100 .125 .120
PWRM1/4.V25W 12V50 31.5K 0. -10K
[6.55 .5] [2.79 .38] [3.81 .38] [0.8] [1.5 .38] [2.5] [3.2] [3.0]
.472 .024 .208 .02 .228 .016 .050 Min. .070 .02 .160 .180 .200
PWRM1/2.V5W 2 3V50 51K 0. -24K
[12 .6] [5.3 .5] [5.8 .4] [1.27] [1.78 .5] [4.0] [4.57] [5.0]
.811 .020 .275 .020 .273 .020 .063 Min. .102 .028 .200 .200 .600
PWRM11VW 4 5V00 110K 0. -100K
[20.6 .5] [6.99 .5] [6.93 .5] [1.6] [2.6 .7] [5.0] [5.0] [15.2]
1 2 3 4
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
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 1K 2.5K 5K 7.5K 10K 25K 50K 75K 100K
Resistance Value (ohms)
TYPICAL PERFORMANCE CHARACTERISTICS APPLICATION NOTE
Use chart above to select model to meet desired surge level. Pulse not to exceed
1.25%/C >70C (Opt. B to be derated
Wattage Derating
peak V & j ratings (derate 30% for Opt.X), and average power during repetitive
0.8%/C >25C)
pulses nte rated W. 30% safety factor is recommended for infrequent pulses, 50%
M:ax.Induc* Opt.X50 0.2uH PRM1/8-1/2, .3uH PRM1
typ. for repetitive pulses (request Note R42 for derating factors attributable to pulse
M:ax.Induc* Opt.X>50 0.37uH PRM1/8-1/2, .6uH PRM1
width, rep. rate, temp., altitude, humidity). Verify by evaluating under worst-case
conditions. Depending on specifics, PR series can often satisfy the surge
S%hort-time Overload 0.5
requirements of UL-217, -268, -294, -497, -508, -913, -943, -991, -1459, -1971,
T%emperature Cycling 0.5 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.
T2CR (20ppm avail.) 120ppm/C (<0. =200ppm)
Consult factory for assistance.
M%oisture Resistance 1
P/N DESIGNATION:
PRM1 - 102 - K T W
S%hock and Vibration 0.2
RCD Type
Options: X, ER, B (leave blank if std)
E%ffect of Soldering 0.2
Resis. Code 1% tol: 3 signif. figures & multiplier,
VVoltage Coefficient 0.005%/
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)
LBoad Life 0.5% Std, 1% Opt.
Tolerance: J=5% (standard), F=1%, G=2%, K=10%
Packaging: B = bulk, T = Tape & Reel
O.perating Temp Range -55 to +150C, +275C avail
Optional TC: 20 =20ppm, 50= 50ppm (leave blank if standard)
D)ielectric Strength 500V (1KV avail.
Termination: W= Lead-free, Q= Tin/Lead (leave blank if either is acceptable,
* specify Opt.75 for induc levels 50% that of Opt.X, or Opt.76 for 33% that of Opt.X 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: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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