PW resistors are designed for general purpose and semi-precision
power applications. The fireproof ceramic construction provides
excellent thermal conductivity and resistance to moisture & solvents.
Typical marking is ‘RCD’, value, tol. &wattage (or type). The resistance
element is wirewound on lower values, & power film on higher values
depending on options (op
t. P & T p
arts are always WW). If a specific
construction is preferred, specify opt.WW or M (not avail. in all values).
APPLICATION NOTE #1: Resistor Comparison
Series PW resistors offer moderate performance levels at prices
below that of other WW or film technologies. Other choices for
medium power applications are Series PV resistors (2W to 10W,
similar to PW in vertical package); Series 100 military grade WW
(1/2W to 50W, offers improved performance, pulse capability, and
reliability); Series RW (1W to 5W WW, offers space savings); and
Series RSF/RMF power film (1/2W to 9W, offers reduced inductance).
APPLICATION NOTE #2: Temperature Rise
Power resistors reach elevated temperatures (typically 125° to 250°C)
when operated at full wattage, so when utilizing above 50% power
rating, the bodies should be mounted off the PCB with adequate
clearance from heat sensitive components. Opt. A standoffs are
helpful in preventing heat transfer to PCB.
GENERAL PURPOSE 1W TO 25W
CERAMIC-ENCASED RESISTORS
PW SERIES
Low cost and the industry’s broadest selection!
Available from stock in popular sizes (5W & 10W, 0.1Ω to 5K)
and selected values in other sizes; non-stock items are
available on exclusive SWIFTTM delivery program
Tolerance to ±0.05%, TCR to ±5 ppm/°C
Wide resistance range: .05Ω to 1MegΩ
Tape & Reel available up to 10W size (Opt.A not avail. on T&R)
OPTIONS
Option X: Non-inductive (PW5X & smaller: ≤50Ω =0.2uH max,
>50Ω= 0.37uH max; PW7X & larger: ≤50Ω=0.3uH max,
>50Ω= 0.6uH max). Reduced inductance levels available
Option T: Temp. sensitive (up to +6000ppm/°C)
Option P: Increased pulse capability
Option FF: Fuse within 10S at 30x rated W 4 and within 45S
at 20x rated W (1Ω to 1K). Custom fusing characteristics avail.
Option B: Increased power
Option A: Standoffs built into ceramic case
Additional options available... burn-in, special marking, non-
standard values, increased voltage, longer or heavier gauge
leads, specialty lead wire material/plating/insulation, cut & formed
leads, etc. Customized components are an RCD specialty!
Stock
Stock
TYPICAL PERFORMANCE FOR SERIES PW
1 TC to 5ppm available >10Ω, 10ppm 1-10Ω, 20ppm 0.1-1Ω 2 275°C avail 3 Tightened
performance avail 4 Opt FF max fault nte 1.5x RCWV or 200x W rating
1 Maximum voltage rating is determined by E= PR, E should not exceed value listed.
2 Specify opt. 59 for double voltage rating. 3 Specify opt.18 for 18AWG (.040”) diameter leads.
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1
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1WP12M1001
2
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2WP23M1001
2
]3.81[27.[72.]8.672.[]8.6]9.4[93.]7.[820.
3WP35M1051
2
]1.32[19.[13.]9.7]9.7[13.]9.01[34.]8.[130.
3
5WP 5 7 M1 002
2
]1.32[19. [83.]7.9 ]9.8[53. ]9.11[74. ]8.[130.
3
7WP701M1053]63[24.1[83.]7.9]9.8[53.]2.31[25.]8.[130.
3
01WP 01 - M1 005 ]05[69.1 ]7.9[83. ]7.9[83. ]2.31[25. ]8.[130.
3
51WP51- K03045]05[69.1]7.21[05.]7.21[05.]2.71[86.]8.[130.
3
02WP02- K04006]56[55.2xam]7.41[85.]7.21[05.]8.71[07.]8.[130.
3
22WP22- K04056]56[55.2xam]7.41[85.]7.21[05.]8.71[07.]8.[130.
3
52WP52- K04007]56[55.2xam]7.41[85.]7.21[05.]8.71[07.]8.[130.
3
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FA040G 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
DERATING CURVE:
(derate W/V/ A when ambient temp. > 25°C)
% OF RA TED POWER
AMBIENT TEMPERATURE (°C)
-55 25 50 100 150 200 250 300
100
75
50
25
0
235°C
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
47
P/N DESIGNATION:
Options: X, WW, T, P, M, FF, B, A, 59, 18
(Leave blank if standard)
RCD Type
Resis.Code .05%-1%: 3 signif. figures & multiplier,
R100=0.1Ω, 1R00=1Ω, 10R0=10Ω, 1000=100Ω, 1001=1K.
Resis.Code 2%-10%: 2 signif. figures & multiplier,
R10=0.1Ω, 1R0=1Ω, 100=10Ω, 101=100Ω, 102=1K.
If necessary, use additional (significant) digits, e.g. R005
for 0.005Ω, R0075 for 0.0075Ω in any tolerance.
Tolerance: K=10%, J=5% (std), H=3%, G=2%,
F=1%, D=0.5%, C=0.25%, B=0.1%
Packaging: B=Bulk (standard), T= Tape & Reel
Temp. Coefficient (leave blank for standard TC): 5=5ppm,
10=10ppm, 20= 20ppm, 50=50ppm, 101=100ppm, 201=200ppm
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)
PW10 - 100 - J B W
RCD PW15 100
Ω
5%
RCD PW7A 10KΩ 5%
RESISTORSCAPACITORSCOILSDELAY LINES
↓
↑
Option A
(standoffs) D
AE
↓
↑
1.00” Min PW1,2
1.12” Min PW3,5
1.25” Min PW7-25 ← B→
C
↓
↑
