RW SERIES
ECONOMY WIREWOUND RESISTORS
1 WATT to 10 WATT
RoHS
Term.W
is RoHS
compliant
& 260°C
compatible
RESISTORSCAPACITORSCOILSDELAY LINES
Excellent performance at economy prices
Wide resistance range: 0.01Ω to 25KΩ
Standard tolerance is 5% (1%, 2% and 10% available)
Available on exclusive
SWIFT
TM
delivery program
Choice of standard bulk pack, horizontally taped (all sizes),
or vertically taped (1W/2W/3W sizes only)
Option X: Low Inductance
Option P: Increased Pulse Capability
Option FF: Flameproof Fusible (see application guide below)
Option E: Low Thermal EMF
Option F: Flameproof Coating
Also available: cut & formed leads (horizontal and vertical),
increased voltage, special marking, etc. Customized
components are an RCD specialty!
RCD’s RW Series are manufactured on an exclusive automated
system, resulting in significant cost savings. The all-welded
ceramic core design results in excellent performance levels,
especially in regards to overload capability, TCR, noise charac-
teristics, and load life stability. Coating is flame resistant and
offers excellent moisture and solvent resistance.
OPTIONS
DERATING
% RATED POWER
100
75
50
25
0
RW1, RW2, RW2S, RW3
RW3S, RW5, RW10
-55
25
50
75
AMBIENT TEMPERATURE (°C)
100
125
150 175
200 225
250
275 300
←
L (Max. Body
Length)
.390 [9.9]
.500 [12.7]
.457 [11.6]
.638 [16.2]
.500 [12.7]
.74 [18.8]
1.7 [43.2]
3
H
→←
L
→
D
1
±.032 [.8]
.140 [3.56]
1
.180 [4.6]
1
.170 [4.32]
1
.220 [5.6]
1
.180 [4.6]
1
.256 [6.5]
1
.325 [8.26]
1
SPECIFICATIONS
RCD Type
RW1
RW2
RW2S
RW3
RW3S
RW5
RW10
1
↓
↑
d
→
D
←
Wattage
1W @ 70°C
2W @ 70°C
2W @ 70°C
3W @ 70°C
3W @ 20°C
5W @ 20°C
10W @ 20°C
Voltage
Rating
60V
100V
100V
140V
120V
210V
700V
2
Resistance
Range
0.01Ω-2.4K
0.01Ω-10K
0.01Ω-9.1K
0.01Ω-20K
0.01Ω-10K
0.05Ω-25K
0.1Ω-25K
d
±.005 [.13]
.027 [.69]
.028 [.71]
.028 [.71]
.031 [.8]
3
.028 [.71]
.031 [.8]
3
.031 [.8]
3
H Min.
2
0.96 [24]
1.16 [30]
1.16 [30]
1.16 [30]
1.16 [30]
1.25 [32]
1.25 [32]
Allow .032”[0.8mm] additional for Opt.X or values <1
Ω
The lead length of parts supplied on tape may be shorter
0.040” [1mm] lead dia. available, specify option “18”
TYPICAL PERFORMANCE CHARACTERISTICS
Temperature Range
Temperature Coef-
ficient
Insulation Resistance
Marking
Moisture Resistance
Thermal Shock
Dielectric Strength
Load Life
-55°C to +275°C
1Ω and above: 100ppm/°C
0.05 to 0.99Ω : 300ppm/°C
Below 0.05Ω : 600ppm/°C
1000 Megohms
Color band or digitally marked with res.
value & tol as min
± 2%
D
R
± 1%
D
R
OPTION FF FUSE RESISTOR APPLICATION GUIDE
1. Opt. FF fusible version is available from 0.1Ω - 2.4K (RW1FF=1.2K max)
2. Fault level must be suitable to safely open the resistor. Option FF parts ≥1Ω
are desgned to blow within 20S at 15x rated power, 20x if<1Ω
(preferable
if
fault level is double this level to ensure quick fusing time).
3. Maximum fault must not exceed 200x W rating, or voltage rating, whichever
is less (increased levels avail).
4. For customized fusing, complete RCD’s fuse questionnaire, or advise the
desired fusing wattage/current, min/max blow times, continuous power, surge
reqts, ambient temp, physical constraints, fault voltage, inductance, etc.
5. Fuse types shouldn’t be mounted in contact with other components or PCB.
6. Residual resistance is
≥100x
initial value after fusing.
7. Verify selection by evaluating under the full range of fault conditions. Place
resistors inside a protective case when testing under overload.
P/N DESIGNATION:
RW3
- R01 - J T W
RW1=300V, RW2 to RW10=500V
RW1,RW2,RW3= 2%
DR
RW2S,RW3S,RW5,RW10= 3%DR
Option FF= 3%
DR
5 x rated W, 5 Sec.
(Option FF = 2xW, 5S)
Overload
RCD Type
Options:
X, P, FF, E, 18 (leave blank for std)
Resis. Code:
2 signif. digits & multiplier, e.g. R01=.01Ω,
R015=.015Ω, R10=.1Ω, 1R0=1Ω, 100=10Ω, 101=100Ω, 102=1K, etc.
Tolerance Code:
F=1%, G=2%, J=5% (std), K=10%
Packaging:
B=Bulk, T=Horiz Tape & Reel, APN=Vertical Tape & Box
Termination:
W = Lead-free (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
FA046G
Sale of this product is in accordance with
GF-061.
Specifications subject to change without notice.
45
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