CVW/CVF Series
Commercial Grade Vertical Mount
Power Wirewound & Film Resistors
IRC Wire and Film Technologies Division
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Vertical mounting configuration saves board space
Power ratings from 2W to 10W
Resistance range from 0.1Ω to 200KΩ
Flameproof ceramic case with inorganic potting material
Non-inductive winding available
Specifications
IRC Type
Power
Rating at
25°C (W)
Resistance
Range*
(Ohms)
Tolerance
(±%)
Temperature Coefficient of Resistance
(±ppm/ºC)
Wirewound Type (CVW)
CVW-2
CVW-3
CVW-5
CVW-7
CVW-10
Film Type (CVF)
CVF-2
CVF-3
CVF-5
CVF-7
CVF-10
2
3
5
7
10
2
3
5
7
10
0.1 - 27
0.1 - 39
0.1 - 47
0.1 - 680
0.1 - 910
28 - 33K
40 - 56K
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
400 (<20Ω)
350 (≥20Ω)
400 (<20Ω)
350 (≥20Ω)
* For resistance values outside these ranges, contact factory
Environmental Performance
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
General Note
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 printing.
© IRC Wire and Film Technologies Division
• 736 Greenway Road Boone, North Carolina 28607-1860
Telephone: 828 264 8861 • Facsimile: 828 264 8866 • Website: www.irctt.com
A subsidiary of
TT electronics plc
CVW/CVF Series Issue February 2007
CVW/CVF Series
Commercial Grade Vertical Mount
Power Wirewound & Film Resistors
IRC Wire and Film Technologies Division
Dimensions (mm)
Radial Leaded Type - CVW/CVF Series
d
W
P
5±1
D
L
5±1
IRC Type
Wirewound Type
Film Type
CVW-2
CVW-3
CVW-5
CVW-7
CVW-10
CVF-2
CVF-3
CVF-5
CVF-7
CVF-10
W (±1)
11.5
12.5
12.5
12.5
12.5
D (±1)
7.5
8.5
9.0
9.0
9.0
L (±1)
20.0
25.0
25.0
38.0
50.0
P (±1)
5
5
5
5
5
d (±0.02)
0.7
0.7
0.8
0.8
0.8
Performance Curves
Derating Curve
100
Percent rated load (%)
+70°C
+155°C
+275°C
Ordering Data
Specify type, resistance, tolerance, RoHS-Compliance
and packaging. This example is for a ceramic vertical film
2-watt, 1000Ω resistor.
Sample Part No.
IRC Type
CVF - Ceramic Vertical Film
CVW - Ceramic Vertical
Wirewound
Power rating
(See specs table)
CVF 2 1001
J
LF
BLK
80
60
40
20
-55
0
50
100 150 200 250 300
Ambient temperature (
°
C)
Temperature Rise Chart
Temperature Rise (ºC)
250
200
150
100
50
10W
7W
5W
3W
2W
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
0
20
40
60
80
100
Packaging
BLK = bulk packaging
Rated load (%)
General Note
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 printing.
© IRC Wire and Film Technologies Division
• 736 Greenway Road Boone, North Carolina 28607-1860
Telephone: 828 264 8861 • Facsimile: 828 264 8866 • Website: www.irctt.com
A subsidiary of
TT electronics plc
CVW/CVF Series Issue February 2007
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