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 0.1Ω to 200KΩ
Flameproof ceramic case with inorganic potting material
Electrical Data
IRC Type
Power
Rating at
25°C (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 (<20Ω)
350 (≥20Ω)
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 (<20Ω)
350 (≥20Ω)
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% + 0.05Ω; 2.5 x nominal power for 5 seconds
1000Vac
±5% + 0.05Ω
-55°C to 275°C
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
+70°C
+155°C
+275°C
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,
1000Ω 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)
(≥100Ω - First 3 significant digits plus 4th digit multiplier)
Example: 100Ω = 1000; 1000Ω = 1001
(>100Ω - "R" is used to designate decimal)
Example: 10Ω = 10R0; 0.25Ω = 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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