CMF Industrial
Vishay Dale
Metal Film Resistors, Industrial, Precision
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 ± 5 ppm/V
Compliant to RoHS directive 2002/95/EC
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
RESISTANCE RANGE
Ω
MAXIMUM
GLOBAL HISTORICAL WORKING 0.1 % to 1 % 0.1 % to 0.5 % 1 % to 5 %
1%
2 %, 5 %
1%
2 %, 5 %
1%
2 %, 5 %
MODEL
MODEL
VOLTAGE
(1)
25 ppm/°C
50 ppm/°C 50 ppm/°C 100 ppm/°C 100 ppm/°C 150 ppm/°C 150 ppm/°C 200 ppm/°C 200 ppm/°C
V
CMF50
CMF55
CMF60
CMF65
CMF70
CMF07
CMF20
CMF-50
CMF-55
CMF-60
CMF-65
CMF-70
CMF-07
CMF-20
200
250
500
500
500
250
500
10 to 2.5M
10 to 2.5M
10 to 2.5M
10 to 2.5M
10 to 2.5M
-
-
10 to 2.5M
10 to 2.5M
10 to 2.5M
10 to 2.5M
10 to 2.5M
-
-
10 to 2.5M 10 to 2.5M
10 to 5M
10 to 10M
10 to 10M
10 to 10M
-
-
1 to 22.1M
1 to 10M
1 to 15M
1 to 15M
-
-
10 to 2.5M
1 to 22.1M
1 to 10M
1 to 15M
1 to 15M
5 to 5M
5 to 10M
10 to 22M
0.5 to 50M
0.5 to 10M
0.5 to 22M
1 to 22M
-
-
10 to 22M
0.5 to 50M
0.5 to 10M
0.5 to 22M
1 to 22M
1 to 5M
1 to 10M
10 to 22M
0.5 to 50M
0.5 to 10M
0.5 to 22M
1 to 22M
-
-
10 to 22M
0.1 to 50M
0.1 to 10M
0.1 to 22M
1 to 22M
1 to 5M
1 to 10M
Note
(1)
Continuous working voltage shall be
P
x
R
or maximum working voltage, whichever is less
MAXIMUM COMMERCIAL POWER RATING
WATTAGE
(2)
At + 70 °C
At + 125 °C
MODEL
CMF50
0.25 W
0.125 W
CMF55
0.5 W
0.25 W
CMF60
1W
0.5 W
CMF65
1W
0.75 W
CMF70
1W
0.75 W
CMF07
0.5 W
-
CMF20
1W
-
Note
(2)
See the load life shift due to power and derating table for a summary of 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 qualifies the load life
stability under these combinations.
GLOBAL PART NUMBER INFORMATION
New Global Part Numbering: CMF55301R00FKRE (preferred part numbering format)
C
GLOBAL MODEL
(See Standard
Electrical
Specifications
table)
M
F
5
5
3
0
1
R
0
0
F
K
R
E
SPECIAL
RESISTANCE
VALUE
R
=
Ω
K
= kΩ
M
= MΩ
R10000
= 0.1
Ω
680K00
= 680 kΩ
1M0000
= 1.0 MΩ
TOLERANCE
CODE
B
= ± 0.1
%
C
= ± 0.25
%
D
= ± 0.5
%
F
=±1
%
G
=±2
%
J
=±5
%
TEMPERATURE
COEFFICIENT
(3)
E
= 25 ppm
H
= 50 ppm
K
= 100 ppm
L
= 150 ppm
N
= 200 ppm
PACKAGING
Historical Part Number example: CMF-553010FT-1 (will continue to be accepted)
EK
= Lead (Pb)-free,
bulk
Blank = Standard
(Dash
Number)
EA
= Lead (Pb)-free, T/R (full)
(Up to 3 digits)
EB
= Lead (Pb)-free,
From
1 to 999
T/R (1000 pieces)
as applicable
BF
= Tin/lead,
bulk
70
= Color
banded,
RE
= Tin/lead, T/R (full)
5
bands
(≤ 1
%)
R6
= Tin/lead, T/R (1000 pieces)
80
= Color
banded,
4
bands
(≥ 2
%)
CMF-55
HISTORICAL MODEL
3010
RESISTANCE
VALUE
F
TOLERANCE CODE
T-1
TEMP. COEFFICIENT
R36
PACKAGING
(3)
Tolerances of ± 0.5 % (D), ± 0.25 % (C) and ± 0.1 % (B) are available only
*
Pb containing terminations are not RoHS compliant, exemptions may apply
Note
in 50 ppm and 25 ppm temperature coefficients
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For technical questions, contact:
ff2aresistors@vishay.com
Document Number: 31018
Revision: 20-Jul-10
CMF Industrial
Metal Film Resistors, Industrial, Precision
Vishay Dale
DIMENSIONS
in inches (millimeters)
1.500 ± 0.125
(1)
[38.10 ± 3.18]
A
C
(Max.)
B
D
GLOBAL MODEL
CMF50
CMF55
CMF60
CMF65
CMF70
CMF07
CMF20
A
0.150 ± 0.020
(3.81 ± 0.51)
0.240 ± 0.020
(4)
(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)
(3)
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
(2)
(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)
Notes
(1)
1.08" ± 0.125" (27.43 mm ± 3.18 mm) if tape and reel
(2)
Available with 0.032" (0.813 mm) lead [CMF60..95]
(3)
0.290" (7.37 mm) for ± 0.25 % and ± 0.1 % resistance tolerances and values > 1 MΩ
(4)
0.260" ± 0.020" (6.60 mm ± 0.51 mm) for values > 5 MΩ
TECHNICAL SPECIFICATIONS
PARAMETER
Maximum Working Voltage
Insulation Voltage (1 Min)
Voltage Coefficient (Max.)
Dielectric Strength
Insulation Resistance
Operating Temperature Range
Terminal Strength (Pull Test)
Noise
Weight (Max.)
UNIT
V≅
V
eff
ppm/V
V
AC
Ω
°C
lb
dB
g
2
2
5
450
450
CMF50
≤
200
CMF55
≤
250
CMF07
≤
250
CMF60
≤
500
> 500
± 5 (measured between 10 % and full rated voltage)
450
750
≥
10
11
- 55 to + 175
2
5
2
5
750
900
900
CMF20
≤
500
CMF65
≤
500
CMF70
≤
500
0.10 µV/V over a decade of frequency, with low and intermediate resistance values typically
below 0.5 µV/V
0.12
0.20
0.20
0.50
0.60
1.00
1.10
TEMPERATURE COEFFICIENT CODES
GLOBAL TC CODE
E
H
K
L
N
Document Number: 31018
Revision: 20-Jul-10
HISTORICAL TC CODE
T-9
T-2
T-1
T-0
T-00
For technical questions, contact:
ff2aresistors@vishay.com
TEMPERATURE COEFFICIENT
25 ppm/°C
50 ppm/°C
100 ppm/°C
150 ppm/°C
200 ppm/°C
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19
CMF Industrial
Vishay Dale
Metal Film Resistors, Industrial, Precision
LOAD LIFE SHIFT DUE TO POWER AND DERATING (AT 70 °C AND AT + 125 °C)
The power rating for the CMF parts is tied to the derating temperature, the heat rise of the parts, and the
ΔR
for the load life performance.
When the tables/graphs below are used together they show that when the parts are run at their higher power ratings, the parts will run
hotter, which has the potential of causing the resistance of the parts to shift more over the life of the part.
LOAD LIFE SHIFT VS. POWER RATING
LOAD LIFE
MODEL
CMF50
CMF55, CMF07
CMF60, CMF20
CMF65
CMF70
MAXIMUM
ΔR
(TYPICAL TEST LOTS)
± 0.15 %
1/20 W and 1/10 W
1/10 W and 1/8 W
1/8 W and 1/4 W
1/4 W and 1/2 W
1/4 W and 1/2 W
± 0.5 %
POWER RATING AT + 70 °C
1/8 W
1/4 W
1/2 W
3/4 W
3/4 W
1/4 W
1/2 W
3/4 W and 1 W
1W
1W
± 1.0 %
± 0.15 %
1/20 W
1/10 W
1/8 W
1/4 W
1/4 W
± 0.5 %
1/10 W
1/8 W
1/4 W
1/2 W
1/2 W
± 1.0 %
1/8 W
1/4 W
1/2 W
3/4 W
3/4 W
POWER RATING AT + 125 °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.
HEAT RISE (°C ABOVE AMBIENT)
RATED POWER IN
%
120
100
80
60
40
20
0
- 55 - 50 - 25
0
25
50
70 75 100
125
150 165 175 200
120
100
80
60
40
20
0
0
CMF50
CMF55,
CMF07
CMF60,
CMF20
CMF65,
CMF70
0.125
0.25
0.375
0.5
0.625
0.75
0.875
1
1.125
DERATING
AMBIENT TEMPERATURE IN °C
APPLIED POWER IN W
THERMAL RESISTANCE
Example:
When a CMF55 part is run at 1/8 W in a 70 °C ambient environment, the resistor will generate enough heat that the surface temperature of
the part will reach about 19 °C over the ambient temperature, and over the life of the part this could cause the resistance value to shift up to
± 0.15 %.
If the same resistor was instead run at 1/4 W in a 70 °C environment, the element will heat up to about 30 °C over ambient, and over the life
of the part the resistance value could shift roughly ± 0.5 %.
And if the resistor was run at it maximum power rating of 1/2 W in a 70 °C environment, it will heat up to about 58 °C over ambient, and you
could see the resistance value shift roughly ± 1 % over the life of the part.
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:
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For technical questions, contact:
ff2aresistors@vishay.com
Document Number: 31018
Revision: 20-Jul-10
CMF Industrial
Metal Film Resistors, Industrial, Precision
Vishay Dale
SPECIAL MODIFICATIONS
1. Terminals may be supplied in any commercial material
with several type finishes.
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.
MARKING
- Value
- Decade and tolerance
- Date code
(Alternately, parts may be MIL marked)
Note
• CMF07 and CMF20 parts are marked with color bands, either per
MIL-PRF-22684 (with a wide white band) or using commercial
color bands. CMFxx..70 and CMFxx..80 parts are marked using
commercial color bands.
PERFORMANCE
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
AT + 70 °C
AT + 125 °C
MAXIMUM
ΔR
(TYPICAL TEST LOTS)
± 0.05 %
± 0.05 %
± 0.05 %
± 0.01 %
± 0.004 %
± 0.15 %
± 0.05 %
± 0.05 %
± 0.05 %
± 0.01 %
± 0.04 %
± 0.15 %
Varies based on power rating used; see load life shift due to power and derating table
± 0.01 %
± 0.03 %
± 0.01 %
± 0.03 %
Document Number: 31018
Revision: 20-Jul-10
For technical questions, contact:
ff2aresistors@vishay.com
www.vishay.com
21
Legal Disclaimer Notice
Vishay
Disclaimer
ALL PRODUCT, PRODUCT SPECIFICATIONS AND DATA ARE SUBJECT TO CHANGE WITHOUT NOTICE TO IMPROVE
RELIABILITY, FUNCTION OR DESIGN OR OTHERWISE.
Vishay Intertechnology, Inc., its affiliates, agents, and employees, and all persons acting on its or their behalf (collectively,
“Vishay”), disclaim any and all liability for any errors, inaccuracies or incompleteness contained in any datasheet or in any other
disclosure relating to any product.
Vishay makes no warranty, representation or guarantee regarding the suitability of the products for any particular purpose or
the continuing production of any product. To the maximum extent permitted by applicable law, Vishay disclaims (i) any and all
liability arising out of the application or use of any product, (ii) any and all liability, including without limitation special,
consequential or incidental damages, and (iii) any and all implied warranties, including warranties of fitness for particular
purpose, non-infringement and merchantability.
Statements regarding the suitability of products for certain types of applications are based on Vishay’s knowledge of typical
requirements that are often placed on Vishay products in generic applications. Such statements are not binding statements
about the suitability of products for a particular application. It is the customer’s responsibility to validate that a particular
product with the properties described in the product specification is suitable for use in a particular application. Parameters
provided in datasheets and/or specifications may vary in different applications and performance may vary over time. All
operating parameters, including typical parameters, must be validated for each customer application by the customer’s
technical experts. Product specifications do not expand or otherwise modify Vishay’s terms and conditions of purchase,
including but not limited to the warranty expressed therein.
Except as expressly indicated in writing, Vishay products are not designed for use in medical, life-saving, or life-sustaining
applications or for any other application in which the failure of the Vishay product could result in personal injury or death.
Customers using or selling Vishay products not expressly indicated for use in such applications do so at their own risk and agree
to fully indemnify and hold Vishay and its distributors harmless from and against any and all claims, liabilities, expenses and
damages arising or resulting in connection with such use or sale, including attorneys fees, even if such claim alleges that Vishay
or its distributor was negligent regarding the design or manufacture of the part. Please contact authorized Vishay personnel to
obtain written terms and conditions regarding products designed for such applications.
No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted by this document or by
any conduct of Vishay. Product names and markings noted herein may be trademarks of their respective owners.
Document Number: 91000
Revision: 11-Mar-11
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