lm
Resistors
Resistor
Metal film resistor
Conformal coating
Power ratings from 1/8W to 3W
CMF Series
Resistance range from 10Ω to 1MΩ
to 3W
•
Metal film resistor
•
Power ratings from 1/8W to 3W
Commercial Grade
Metal Film Resistor
Commercial Grade
CMF Series
Film Resistor
Metal
1/8W
om 10Ω to 1MΩ
•
Conformal coating
•
Resistance range from 10Ω to 1MΩ
Not Recommended for New Designs
All parts are Pb-free and comply with EU Directive 2011/65/EU (RoHS2)
ata
Electrical Data
IRC Type
Power
Rating at
70°C (W)
Resistance
Range
(Ohms)
Power
Resistance
ating at
Standard Size
Range
0°C (W)
(Ohms)
CMF-1/8
0.125
0.25
0.5
1
2
3
CMF-1/4
CMF-1/2
CMF-1
CMF-2
CMF-3
Tolerance
(±%)
Tolerance
(±%)
TCR
(±ppm/°C)
TCR
(±ppm/°C)
Max.
Working
Voltage (V)
200
250
10 - 1M
1
100
350
500
500
500
Max.
Working
Voltage (V)
400
500
700
Max.
Overload
Voltage (V)
Dielectric
Withstanding
Voltage (V)
Max.
Overload
Voltage (V)
400
500
700
1000
1000
1000
W
V
0.125
0.25
0.5
1
2
3
200
1000
250
1000
350
500
500
500
1000
400
500
10 - 1M
Environmental Data
Short-time overload
Dielectric withstanding voltage
Terminal strength
Resistance to Soldering heat
Pulse Overload
Solderability
Resistance to solvent
Temperature cycling
Load life in humidity
Load life
1
100
700
1000
1000
1000
ΔR/R
≤(±0.5%
+ 0.05Ω), with no evidence of mechanical damage.
No evidence of flashover, mechanical damage, arcing or insulation breakdown.
No evidence of mechanical damage.
ΔR/R
≤(±1%
+ 0.05Ω), with no evidence of mechanical damage.
ΔR/R
≤(±1%
+ 0.05Ω), with no evidence of mechanical damage.
Minimum 95% coverage.
No deterioration of protective coating and markings.
ΔR/R
≤(±1%
+ 0.05Ω), with no evidence of mechanical damage.
Standard type:
ΔR/R
±3% for <100KΩ, ±5% for
≥100KΩ;
ntal Data
d
ΔR/R
≤(±0.5%
+ 0.05Ω), with no evidence of mechanical damage.
Standard type:
ΔR/R
±1.5% Flame retardant type: R/R ±5%
ding voltage
General Note
No evidence of flashover, mechanical damage, arcing or insulation
No evidence of mechanical damage.
BI Technologies IRC Welwyn
CMF Series Issue May 2009 Sheet 1 of 3
General Note
IRC reserves the right to make changes in product specification without notice or liability.
All information is subject to IRC’s
right to make
considered accurate at time of going to print.
TT Electronics reserves the
own data and is
changes in product specification without notice or liability.
Telephone: 361 992 7900 • Facsimile: 361 992 3377 • Website: www.irctt.com
All information is subject to TT Electronics’ own data and is considered accurate at time of going to print.
© IRC Advanced Film Division
• 4222 South Staples Street • Corpus Christi Texas 78411 USA
www.ttelectronics.com/resistors
A subsidiary of
TT electronics plc
© TT
ering heat
Electronics plc
ΔR/R
≤(±1%
+ 0.05Ω), with no evidence of mechanical damage.
09.17
Commercial Grade
Commerical Grade
Resistor
Metal Film
Metal Film Resistor
CMF Series
Physical Data
Not Recommended for New Designs
d
D
H
L
H
Dimensions (mm)
IRC Type
Standard Size
CMF-1/8
CMF-1/4
CMF-1/2
CMF-1
CMF-2
CMF-3
D (max.)
1.85
2.5
3.5
5.0
5.5
6.5
L (max.)
3.5
6.8
10.0
12.0
16.0
17.5
d (±0.02)
0.5
0.6
0.6
0.7
0.8
0.8
H (±3)
28
28
28
28
28
28
© IRC Advanced Film Division
• 4222 South Staples Street • Corpus Christi Texas 78411 USA
Telephone: 361 992 7900 • Facsimile: 361 992 3377 • Website: www.irctt.com
CMF Series Issue May 2009 Sheet 2 of 3
General Note
TT Electronics reserves the right to make changes in product specification without notice or liability.
All information is subject to TT Electronics’ own data and is considered accurate at time of going to print.
BI Technologies IRC Welwyn
www.ttelectronics.com/resistors
© TT Electronics plc
09.17
Commerical Grade
Metal Film Resistor
Commercial Grade
Metal Film Resistor
CMF Series
Not Recommended for New Designs
Hot Spot Temperature Curve
+70°C
+155°C
200
Measuring position
Derating Curve
100
Percent Rated Load (%)
80
60
40
20
-60
-30
0
30
60
90
120 150 180
-55°C
150
CMF-200
100
50
0
25
50
75
100
CMF-100
CMF-50
CMF-25
CMF-12
Ambient Temperature (°C)
Ordering Data
Specify type, resistance, tolerance, RoHS-Compliance and packaging.
This example is for a Metal Film Resistor, 1-watt, 1000Ω resistor.
Sample Part No.
IRC Type
CMF
- 1
1001
F
LF
TR
CMF - Metal Film Resistor
Power Rating
(See specs table)
Resistance Value (EIA 4-digit code)
(≥100Ω - First 3 significant digits plus 4th digit multiplier)
Example: 100 ohms = 1000, 1000 ohms = 1001
(>100Ω - "R" is used to designate decimal)
Example: 10Ω = 10R0, 1Ω = 1R00, 51Ω = 51R0
Tolerance
F = ±1%; G = ±2%; J = ±5%
RoHS- compliance
Packaging
LF = RoHS compliant construction
TR = tape and reel only
© IRC Advanced Film Division
• 4222 South Staples Street • Corpus Christi Texas 78411 USA
Telephone: 361 992 7900 • Facsimile: 361 992 3377 • Website: www.irctt.com
CMF Series Issue May 2009 Sheet 3 of 3
General Note
TT Electronics reserves the right to make changes in product specification without notice or liability.
All information is subject to TT Electronics’ own data and is considered accurate at time of going to print.
BI Technologies IRC Welwyn
www.ttelectronics.com/resistors
© TT Electronics plc
09.17
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