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Commercial Grade Axial Lead Power Wirewound & Film Resistor
CAW/CAF Series
* * * * * Power ratings from 2W to 10W Non-inductive winding available Standard tolerance 5% and 10% Resistance range from 0.1 to 200K Flameproof ceramic case with inorganic potting material
Electrical Data
IRC Type Power Rating at 25C (W) Resistance Range* (Ohms) Tolerance (%) Temperature Coefficient of Resistance (ppm/C) Wirewound Type (CAW) CAW-2 CAW-3 CAW-5 CAW-7 CAW-10 CAW-15 CAW-20 CAW-25 CAW-2A CAW-5A CAW-7A CAW-10A Film Type (CAF) CAF-2 CAF-3 CAF-5 CAF-7 CAF-10 CAF-15 CAF-20 CAF-2A CAF-5A CAF-7A CAF-10A
General Note
2 3 5 7 10 15 20 25 2 5 7 10
0.1 - 27 0.1 - 39 0.1 - 47 0.1 - 680 0.1 - 910 1.0 - 1K 2.0 - 1.2K 2.0 - 1.2K 0.1 - 27 0.1 - 47 0.1 - 680 0.1 - 910
5, 10 5, 10 5, 10 5, 10 5, 10 5, 10 5, 10 5, 10 5, 10 5, 10 5, 10 5, 10 400 (<20) 350 (20)
2 3 5 7 10 15 20 2 5 7 10
28 - 33K 40 - 56K 48 - 100K 681 - 200K 911 - 200K 1.1K - 200K 1.3K - 200K 28 - 33K 48 - 100K 681 - 200K 911 - 200K
5, 10 5, 10 5, 10 5, 10 5, 10 5, 10 5, 10 5, 10 5, 10 5, 10 5, 10 400 (<20) 350 (20)
IRC reserves the right to make changes in product specification without notice or liability. All information is subject to IRC's own data and is considered accurate at time of going to print.
Wire and Film Technologies Division * 4222 South Staples Street * Corpus Christi Texas 78411 USA
Telephone: 361 992 7900 * Facsimile: 361 992 3377 * Website: www.irctt.com
A subsidiary of TT electronics plc CAW/CAF Series Issue August 2008 Sheet 1 of 3
Commercial Grade Axial Lead Power Wirewound & Film Resistor
Environmental Data
Short-time overload Dielectric withstanding voltage Resistance to Soldering heat Operating temperature range 5% + 0.05; 2.5 x nominal power for 5 seconds 1000Vac 5% + 0.05 -55C to 275C
Physical Data
CAW-X / CAF-X Type CAW-XA / CAF-XA Type
W
H
L d
H
D
L d
H
Dimensions (mm) IRC Type(s) Wirewound Type Film Type CAW-2 CAW-3 CAW-5 CAW-7 CAW-10 CAW-15 CAW-20 CAW-25 CAW-2A CAW-5A CAW-7A CAW-10A CAF-2 CAF-3 CAF-5 CAF-7 CAF-10 CAF-15 CAF-20 CAF-2A CAF-5A CAF-7A CAF-10A W (1) 7.0 8.0 10.0 10.0 10.0 12.5 14.5 14.5 7.0 10.0 10.0 10.0 D (1) 7.0 8.0 9.0 9.0 9.0 11.5 13.5 13.5 7.0 9.0 9.0 9.0 L (1) 18.0 22.0 22.0 35.0 49.0 49.0 60.0 64.0 18.0 22.0 35.0 49.0 H (5) 28.0 22.0 22.0 35.0 35.0 35.0 35.0 35.0 28.0 35.0 35.0 35.0 d (0.02) 0.7 0.7 0.8 0.8 0.8 0.8 0.8 0.8 0.7 0.8 0.8 0.8
Wire and Film Technologies Division * 4222 South Staples Street * Corpus Christi Texas 78411 USA
Telephone: 361 992 7900 * Facsimile: 361 992 3377 * Website: www.irctt.com
CAW/CAF Series Issue August 2008 Sheet 2 of 3
Commercial Grade Axial Lead Power Wirewound & Film Resistor
Power Derating Curve
100 Percent rated load (%) 80 +70C +155C +275C
150
Heat Rise Chart
Heat rise (C)
60 40 20
120 90 60 30
10W 7W 5W
-55
0
50
100 150 200 250
300
0
20
40
60
80
100
Ambient Temperature (C)
Rated load (%)
Ordering Data
Specify type, resistance, tolerance, RoHS-Compliance and packaging. This example is for a Ceramic Axial Film, 2-watt, 1000 resistor.
Sample Part No. IRC Type
CAF
2
1001
J
LF
BLK
CAF - Ceramic Axial Film CAW - Ceramic Axial Wirewound
Power rating
(see specs table) (100 - First 3 significant digits plus 4th digit multiplier) Example: 100 = 1000; 1000 = 1001 (>100 - "R" is used to designate decimal) Example: 10 = 10R0; 0.25 = R250
Resistance Value (EIA 4-digit code)
Tolerance (EIA format)
J = 5% K = 10%
RoHS - Compliance Packaging
LF = RoHS compliant construction BLK = bulk packaging
Wire and Film Technologies Division * 4222 South Staples Street * Corpus Christi Texas 78411 USA
Telephone: 361 992 7900 * Facsimile: 361 992 3377 * Website: www.irctt.com
CAW/CAF Series Issue August 2008 Sheet 3 of 3

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