CMF Industrial
Vishay Dale
Metal Film Resistors, Industrial
FEATURES
• Small size - conformal coated
• Flame retardant epoxy coating
• Controlled temperature coefficient
• Excellent high frequency characteristics
• Exceptionally low noise; typically 0.10
µV/V
• Low voltage coefficient to
±
5ppm/Volt
• Special tolerance and or TC matching available on request
Vishay Dale Model CMF is also available as Military Qualified Styles RN and RL. See appropriate catalog or web page for the MIL-SPEC
ratings/attributes. (Except for marking, the Industrial and Military versions are exactly the same. Depending upon stock, military marked parts
may be supplied as industrial rated parts.)
STANDARD ELECTRICAL SPECIFICATIONS
MODEL
LIMITING ELEMENT
VOLTAGE
MAX
V
200 V
250 V
250 V
500 V
500 V
500 V
500 V
±
2%**
T-00
—
0.1 - 0.49
—
0.1 - 0.49
—
0.1 - 0.49
—
RESISTANCE RANGE
Ω
VS - BEST AVAILABLE TOLERANCE/TEMPERATURE COEFFICIENT
±
2%, 5%
±
2%, 5%
±
1%
±
1%
±
1%
T-0
T-1
T-2
T-0
T-1
10 - 1M
0.5 - 22.1M
–
0.5 - 8M
–
0.5 - 15M
1 - 15M
–
–
1 - 5M
–
1 - 8M
–
–
10 - 1M
1 - 22.1M
–
1 - 8M
–
1 - 15M
1 - 15M
–
–
5 - 5M
–
5 - 8M
–
–
10 - 500k
10 - 5M
—
10 - 8M
—
10 - 10M
10 - 10M
±
0.1%
T-9
10 - 500k
10 - 2.5M
—
10 - 2.5M
—
10 - 2.5M
10 - 2.5M
CMF-50
CMF-55
CMF-07
CMF-60
CMF-20
CMF-65
CMF-70
**A 0.0005Ω bridge error is allowed in resistance measurement. It has the greatest effect on values in this range and should be taken into
account when verifying tolerance and Temperature Coefficient.
COMMERCIAL POWER RATING
(See Performance Table)
WATTAGE
1/20
1/10
1/8
1/4
1/2
3/4
1
@ + 70
°
C
CMF-50
CMF-50, -55
CMF-50, -55, -60
CMF-55, -60, -65, -70, -07
CMF-55, -60, -65, -70, -20
CMF-60, -65, -70, -20
CMF-60, -65, -70, -20
@ + 125
°
C
CMF-50
CMF-50, -55
CMF-50, -55, -60, -20
CMF-55, -60, -65, -70, -20
CMF-60, -65, -70, -20
CMF-65, -70
—
Note:
The above table summarizes the more common combinations of power rating, case size and ambient operating temperature that prevail in
various Industrial and Military resistor specifications. The “performance” table in ensuing pages qualifies the load life stability under these
combinations
ORDERING INFORMATION
CMF-55
MODEL
CMF-50 CMF-70
CMF-55 CMF-07
CMF-60 CMF-20
CMF-65
3010
RESISTANCE* VALUE
First three digits are significant.
(Two for
±
2% and
±
5% tolerance.)
Last digit specifies the number of
zeros to follow.
F
TOLERANCE
B =
±
0.1%
C =
±
0.25%
D =
±
0.5%
F =
±
1%
G=
±
2%
J =
±
5%
T-1
TEMPERATURE***
COEFFICIENT
T-00 =
±
200ppm/°C
T-0 =
±
150ppm/°C
T-1 =
±
100ppm/°C
T-2 =
±
50ppm/°C
T-9 =
±
25ppm/°C
* Examples: R27 = 0.27 ohm, 49R9 = 49.9 ohm, 1000 = 100 ohm, 1001 = 1 kilohm, 1004 = 1 Megohm, R511 = 0.511 ohm.
*** Tolerances of
±
0.5% (D),
±
0.25% (C) and
±
0.1% (B) are available only in T-2 and T-9 temperature coefficients.
www.vishay.com
24
For Technical Questions, contact: ff2bresistors@vishay.com
Document Number: 31018
Revision 11-Feb-03
CMF Industrial
Metal Film Resistors, Industrial
DIMENSIONS
in inches [millimeters]
Vishay Dale
1.500
±
0.125
[38.10
±
3.18]
A
C
(Max.)
* 1.08
±
0.125 [27.43
±
3.18] IF TAPE AND REEL
B
D
MODEL
CMF-50
CMF-55
CMF-60
CMF-65
CMF-70
CMF-07
CMF-20
A
0.150
±
0.020
[3.81
±
0.51]
0.240
±
0.020***
[6.10
±
0.51]
0.344
±
0.031
[8.74
±
0.79]
0.562
±
0.031
[14.27
±
0.79]
0.562
±
0.031
[14.27
±
0.79]
0.240
±
0.020
[6.10
±
0.51]
0.375
±
0.040
[9.53
±
1.02]
B
0.065
±
0.015
[1.65
±
0.38]
0.090
±
0.008
[2.29
±
0.20]
0.145
±
0.015
[3.68
±
0.38]
0.180
±
0.015
[4.57
±
0.38]
0.180
±
0.015
[4.57
±
0.38]
0.090
±
0.008
[2.29
±
0.20]
0.145
±
0.015
[3.68
±
0.38]
C
(Max.)
0.187 [4.75]
0.278 [7.06]**
0.425 [10.80]
0.687 [17.45]
0.687 [17.45]
0.278 [7.06]
0.425 [10.80]
D
0.016
±
0.002
[0.41
±
0.05]
0.025
±
0.002
[0.64
±
0.05]
0.025
±
0.002*
[0.64
±
0.05]
0.025
±
0.002*
[0.64
±
0.05]
0.032
±
0.002
[0.81
±0.05]
0.025
±
0.002
[0.64
±
0.05]
0.032
±
0.002
[0.81
±
0.05]
* Available with .032" [.813mm] lead.
** .290" [7.37mm] for
±
0.25% and
±
0.1% resistance tolerances and values > 1MΩ
*** .260"
±
.020" [6.60mm
±
.508mm] for values > 5 MΩ.
TECHNICAL SPECIFICATIONS
PARAMETER
Maximum Working Voltage
Insulation Voltage (1min)
Voltage Coefficient
Dielectric Strength
Insulation Resistance
Operating Temperature Range
Terminal Strength (pull test)
Noise
UNIT
V
V
eff
Max
VAC
Ω
°C
lb
dB
2
2
5
450
CMF-50
≤
200
CMF-55
≤
250
CMF-07
≤
250
CMF-60
≤
500
>500
.± 5ppm/Volt (measured between 10% and full rated voltage)
450
450
750
≥10
11
- 55 / + 175
2
5
2
5
750
900
900
CMF-20
≤
500
CMF-65
≤
500
CMF-70
≤
500
0.10 microvolts/Volt over a decade of frequency, with low and intermediate resistance
values typically below 0.5 microvolts/V
Weight (max)
g
0.12
0.20
0.20
0.50
0.60
1.00
1.10
Document Number: 31018
Revision 11-Feb-03
For Technical Questions, contact: ff2bresistors@vishay.com
www.vishay.com
25
CMF Industrial
Vishay Dale
Metal Film Resistors, Industrial
The increase in resistor surface temperature due to the rated load
is shown below.
Resistor surface temperature = heat rise plus ambient
temperature.
100
100
80
60
40
20
20
0
0
-55 -50 -25
0
25
50 70 75 100 125 150 165 175 200
AMBIENT TEMPERATURE IN ˚C
CMF resistors have an operating temperature range of - 55°C to
+ 175°C. They must be derated at high ambient temperatures
according to the derating curve.
RATED POWER IN %
120
HEAT RISE (
°
C)
80
60
40
1/2 W
1W
1W
3/4 W
3/4 W
1/2 W
1/4 W
1/8 W
1/10 W
1/4 W
1/8 W 1/4 W
1/2 W
CMF-55 CMF-60 CMF-65
CMF-07 CMF-20 CMF-70
DERATING
HEAT RISE
MATERIAL SPECIFICATIONS
Element:
Vacuum-deposited nickel-chrome alloy
Coating:
Flame retardant epoxy, formulated for superior
moisture protection
Continuous satisfactory coverage when tested in
accordance with MIL-R-10509
Core:
Fire-cleaned high purity ceramic
Solderability:
SPECIAL MODIFICATIONS
1. Terminals may be supplied in any commercial material with
several type finishes.
MARKING
— Value
2. Special pre-conditioning (power aging, temperature cycling, etc.)
to customer specifications.
3. Non-helixed resistors can be supplied for critical high frequency
applications.
4. Fusible, flameproof versions available.
— Decade and Tolerance
— Date code
(Alternate parts may be MIL marked)
www.vishay.com
26
For Technical Questions, contact: ff2bresistors@vishay.com
Document Number: 31018
Revision 11-Feb-03
CMF Industrial
Metal Film Resistors, Industrial
TEMPERATURE COEFFICIENT CODES
TEMPERATURE COEFFICIENT
CODE
T-00
T-0
T-1
T-2
T-9
TEMPERATURE
COEFFICIENT
0
±
200ppm/°C
0
±
150ppm/°C
0
±
100ppm/°C
0
±
50ppm/°C
0
±
25ppm/°C
Vishay Dale
PERFORMANCE
POWER RATING
MODEL
CMF-50
CMF-55
CMF-60
CMF-65
CMF-70
CMF-07
CMF-20
TEST [Test methods - MIL-STD-202]
Short Time Overload
Low Temperature Operation
Moisture Resistance
Shock
Vibration
Temperature Cycling
Load Life
Dielectric Withstanding Voltage
Effect of Solder
–
–
–
–
–
–
±
0.15%
–
–
±
0.05%
±
0.05%
±
0.05%
±
0.01%
±
0.004%
±
0.15%
±
0.5%
±
0.01%
±
0.03%
1/10 Watt
1/8 Watt
1/4 Watt
1/2 Watt
1/2 Watt
–
–
@ + 70
°
C
1/8 Watt
1/4 Watt
1/2 Watt
3/4 Watt
3/4 Watt
1/4 Watt
1/2 Watt
-
1/2 Watt
3/4 Watt & 1 Watt
1 Watt
1 Watt
–
1 Watt
1/20 Watt
1/10 Watt
1/8 Watt
1/4 Watt
1/4 Watt
–
–
@ + 125
°
C
1/10 Watt
1/8 Watt
1/4 Watt
1/2 Watt
1/2 Watt
–
–
1/8 Watt
1/4 Watt
1/2 Watt
3/4 Watt
3/4 Watt
–
–
MAXIMUM
∆
R (Typical Test Lots)
–
–
–
–
–
–
±
1.0%
–
–
–
–
–
–
–
–
±
0.15%
–
–
±0.05%
±0.05%
±0.05%
±0.01%
±0.04%
±0.15%
±0.5%
±0.01%
±0.03%
–
–
–
–
–
–
±
1.0%
–
–
Document Number: 31018
Revision 11-Feb-03
For Technical Questions, contact: ff2bresistors@vishay.com
www.vishay.com
27
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