cial Grade
Commercial
m Resistor
Grade
·
Conformal coating
·
Power ratings from 1/8W to 3W
·
Resistance range from 10Ω to 1MΩ
CMF Series
•
Conformal coating
•
Resistance range from 10
to 1M
•
1M
to
Power ratings from 1/8W to 3W
Metal Film Resistor
Commercial Grade
Metal
resistor
·
Metal film
Film Resistor
CMF Series
•
Metal
8W to 3W
film resistor
m 10
ta
Electrical Data
IRC Type
Standard Size
wer
ng at
C (W)
Resistance
Range
CMF-1/8
0.125
(Ohms)
CMF-1/4
0.25
0.5
1
2
3
CMF-1/2
CMF-1
CMF-2
CMF-3
Power
Rating at
70°C (W)
Resistance
Range
(Ohms)
Tolerance
(±%)
TCR
(±ppm/°C)
Max.
Working
Voltage (V)
Tolerance
(±%)
TCR
(±ppm/°C)
Max.
Working
200
400
Voltage (V)
250
500
350
500
500
500
700
Max.
Overload
Voltage (V)
Max.
Overload
400
Voltage (V)
500
700
1000
Dielectric
Withstanding
Voltage (V)
Di
With
Vo
10 - 1M
1
100
1000
125
200
250
350
500
1000
1000
400
1000
500
700
1000
1000
1000
1000
25
.5
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
10 - 1M
1
R/R
(±0.5% + 0.05 ), with no evidence of mechanical damage.
100
No evidence of flashover, mechanical damage, arcing or insulation breakdown.
No evidence of mechanical damage.
R/R
R/R
2
500
500
3
(±1% + 0.05 ), with no evidence of mechanical damage.
(±1% + 0.05 ), with no evidence of mechanical damage.
Minimum 95% coverage.
No deterioration of protective coating and markings.
R/R
(±1% + 0.05 ), with no evidence of mechanical damage.
R/R ±3% for <100K , ±5% for
100K
al Data
Standard type:
R/R
(±0.5% + 0.05 ), with no evidence of mechanical damage.
Standard type:
R/R ±1.5% Flame retardant type: R/R ±5%
ng voltage
Note
General
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
to make changes in product specification without notice or liability.
TT electronics reserves the right
and is considered accurate at time of going to print.
Telephone: 361 992 7900 • Facsimile: 361 992 3377 • Website: www.irctt.com
No evidence of flashover, mechanical damage, arcing or insulation br
www.bitechnologies.com
No evidence of mechanical damage.
www.irctt.com www.welwyn-tt.com
CMF Series Issue May 2009 Sheet 1 of 3
A subsidiary of
TT electronics plc
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
© TT electronics plc
ing heat
R/R
(±1% + 0.05 ), with no evidence of mechanical damage.
09. 11
Commercial Grade
Commercial Grade
Resistor
Metal Film
Metal Film Resistor
CMF Series
Physical Data
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.
www.bitechnologies.com www.irctt.com www.welwyn-tt.com
© TT electronics plc
09. 11
Commercial Grade
Metal Film Resistor
Commercial Grade
Metal Film Resistor
CMF Series
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, 1000 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)
( 100 - First 3 significant digits plus 4th digit multiplier)
Example: 100 ohms = 1000, 1000 ohms = 1001
(>100 - "R" is used to designate decimal)
Example: 10 = 10R0, 1 = 1R00, 51 = 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.
www.bitechnologies.com www.irctt.com www.welwyn-tt.com
© TT electronics plc
09. 11
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