PRM SERIES
High voltage/ high surge capability
Cost effective surface mount package
Available on RCD’s exclusive SWIFT
TM
program
OPTIONS
Option ER: Group A Screening per MIL-R-39008 RCR
Option B: Increased power
Option X: Non-inductive
PULSE RESISTORS, SURFACE MOUNT
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, in-
rush currents, capacitor charge/discharge circuits, lightning surges, etc.
SPECIFICATIONS
TYPICAL PERFORMANCE CHARACTERISTICS
1
Rated continuous voltage = √(PxR), nte value listed.
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
* specify Opt.75 for induc levels 50% that of Opt.X, or Opt.76 for 33% that of Opt.X
→ ←
A
------
------
B
.010” typ PRM1/2,.050” PRM1
D
C
← E →
↑
↓
↓
↑
SURGE CAP ABILITY
100
10
1
0.1
Energy Rating, Joules
RESISTORSCAPACITORS
C
OILSDELAY
LINES
DCR
epyT
gnitaRegattaW
BtpOdtS
.xaM
egatloV
4,3,1
kaeP.xaM
egatloVesluP
4,2
ecnatsiseR
egnaR
]mm[hcnISNOISNEMID
A BCD EFGH
8/1MRPW5.W521.V051VK21.0 Ω K2-
20.±002.
]5.±1.5[
510.±690.
]83.±44.2[
10.±021.
]52.±81.3[
.niM520.
]36.[
510.±540.
]83.±41.1[
080.
]0.2[
001.
]5.2[
80.
]0.2[
4/1MRPW1W52.V052VK5.31.0 Ω K01-
20.±852.
]5.±55.6[
510.±011.
]83.±97.2[
510.±051.
]83.±18.3[
.niM230.
]8.0[
510.±060.
]83.±5.1[
001.
]5.2[
521.
]2.3[
021.
]0.3[
2/1MRPW2W5.V053VK51.0 Ω K42-
420.±274.
]6.±21[
20.±802.
]5.±3.5[
610.±822.
]4.±8.5[
.niM050.
]72.1[
20.±070.
]5.±87.1[
061.
]0.4[
081.
]75.4[
002.
]0.5[
1MRPW4W1V005VK011.0 Ω K001-
020.±118.
]5.±6.02[
020.±572.
]5.±99.6[
020.±372.
]5.±39.6[
.niM360.
]6.1[
820.±201.
]7.±6.2[
002.
]0.5[
002.
]0.5[
006.
]2.51[
gnitareDegattaW
detaredebotB.tpO(C°07>C°/%52.1
)C°52>C°/%8.0
*cudnI.xaM:X.tpO ≤ 05 Ω
*cudnI.xaM:X.tpO > 05 Ω
1MRPHu3.,2/1-8/1MRPHu2.0
1MRPHu6.,2/1-8/1MRPHu73.0
daolrevOemit-trohS%5.0±
gnilcyCerutarepmeT%5.0±
).liavampp02(RCT2.0<(C°/mpp021± Ω )mpp002=
ecnatsiseRerutsioM%1±
noitarbiVdnakcohS%2.0±
gniredloSfotceffE%2.0±
tneiciffeoCegatloVV/%500.0±
efiLdaoLB.tpO%1±,dtS%5.0±
egnaRpmeTgnitarepO.liavaC°572+,C°051+ot55-
htgnertScirtceleiD).liavaVK1(V005
FA005E Sale of this product is in accordance with GF-061. Specifications subject to change without notice.
RoHS
Term.W is
RoHS
compliant
& 260°C
compatible
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.
APPLICA TION NOTE
RCD C omponents Inc, 520 E.Industrial Park Dr, Manchester, NH, USA 03109 rcdcomponents.com Tel: 603
-
669
-
0054 Fax: 603
-
669
-
5455 Email:sales@rcdcomponents.com
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)
PRM1
PRM1/2
PRM1/4
PRM1/8
28
P/N DESIGNA TION:
RCD Type
Options: X, ER, B (leave blank if std)
Packaging: B = bulk, T = Tape & Reel
PRM1 - 102 - K T W
Tolerance: J=5% (st andard), F=1%, G=2%, K=10%
Optional TC: 20 =20ppm, 50= 50ppm (leave blank if standard)
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)
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)
SUGGESTED
P AD LA YOUT
↓
← →
F
↑
H
G