Commercial Grade Axial Lead
Power Wirewound & Film
Resistor
Power Derating Curve
Heat Rise Chart
+70°C +155°C
100
+275°C
150
80
60
40
10W
120
90
7W
5W
60
20
30
0
20
40
60
80
100
-55
0
50 100 150 200 250 300
Rated load (%)
Ambient Temperature (°C)
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.
CAF
2
1001
J
LF BLK
IRC Type
CAF - Ceramic Axial Film
CAW - Ceramic Axial Wirewound
Power rating
(see specs table)
Resistance Value (EIA 4-digit code)
(≥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
Tolerance (EIA format)
J = ±5%
K = ±10%
RoHS - Compliance
LF = RoHS compliant construction
Packaging
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
TTELEC [ TT Electronics ]
