CMF Fusible
www.vishay.com
Vishay Dale
Metal Film Resistors, Special Purpose, Fusible, Flameproof
FEATURES
• Special filming and coating processes
• Fusible - circuit protection in case of other
Available
component failure
• Flameproof - meets EIA RS-325, will not flame
when overloaded
• Tape and reel packaging is standard
Available
• Material categorization: for definitions of
compliance please see
www.vishay.com/doc?99912
Note
*
This datasheet provides information about parts that are RoHS-compliant and/or parts that are non-RoHS-compliant. For example, parts
with lead (Pb) terminations are not RoHS-compliant. Please see the information/tables in this datasheet for details.
STANDARD ELECTRICAL SPECIFICATIONS
GLOBAL
MODEL
CMF55..39
CMF60..64
CMF70..5
HISTORICAL
MODEL
CMF-55-39
CMF-60-64
CMF-70-5
POWER RATING
P
70 °C
W
0.25
0.50
1.5
RESISTANCE
RANGE
(1)
4 to 10K
4 to 23K
4 to 30K
TOLERANCE
±%
1
1
1
TEMPERATURE
COEFFICIENT
± ppm/°C
100
100
100
Note
(1)
Contact factory for extended values
TECHNICAL SPECIFICATIONS
PARAMETER
Rated Dissipation at 70 °C
Maximum Flame Test Voltage
Dielectric Strength
Insulation Resistance
Operating Temperature Range
Weight (Max.)
UNIT
W
V
RMS
V
AC
°C
g
CMF55..39
0.25
350
450
10
10
-65/+165
0.28
CMF60..64
0.50
500
750
10
10
-65/+165
0.50
CMF70..5
1.5
1000
900
10
10
-65/+165
1.30
GLOBAL PART NUMBER INFORMATION
Global Part Numbering: CMF55100R00FKRE39 (preferred part numbering format)
C
M
F
5
5
1
0
0
R
0
0
F
K
R
E
3
9
SPECIAL
39
= Fusible
CMF 55
64
= Fusible
CMF60
5
= Fusible
CMF70
GLOBAL MODEL
CMF55
CMF60
CMF70
RESISTANCE VALUE
R
=
K
= k
4R0000
= 4.0
680R00
= 680
23K000
= 23 k
TOLERANCE CODE
F
=±1%
TEMP. COEFFICIENT
K
= 100 ppm
PACKAGING
EK
= Lead (Pb)-free, bulk
EA
= Lead (Pb)-free,
T/R (full)
EB
= Lead (Pb)-free, T/R
(1000 pieces; except 70's)
BF
= Tin/lead, bulk
RE
= Tin/lead, T/R
(full; except 70's)
CP
= Tin/lead, T/R
(full; 70's only)
R6
= Tin/lead, T/R
(1000 pieces; except 70's)
Historical Part Number example: CMF-55-391000F R36 (will continue to be accepted)
CMF-55-39
HISTORICAL MODEL
1000
RESISTANCE VALUE
F
TOLERANCE CODE
R36
PACKAGING
Note
• For additional information on packaging, refer to the Through Hole Resistor Packaging document (www.vishay.com/doc?31544).
Revision: 14-May14
Document Number: 31031
1
For technical questions, contact:
ff2aresistors@vishay.com
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT
www.vishay.com/doc?91000
CMF Fusible
www.vishay.com
Vishay Dale
DIMENSIONS
in inches (millimeters)
1.500 ± 0.125
(1)
(38.10 ± 3.18)
A
C
(Max.)
D
B
Note
(1)
Lead length for product in bulk pack. For product supplied in tape and reel, the actual lead length would be based on the body size, tape
spacing and lead trim.
C
(Max.)
0.290
(7.37)
0.425
(10.80)
0.687
(17.54)
GLOBAL MODEL
CMF55..39
CMF60..64
CMF70..5
A
0.240 ± 0.020
(6.10 ± 0.51)
0.370 ± 0.035
(9.40 ± 0.89)
0.562 ± 0.031
(14.27 ± 0.79)
B
0.090 ± 0.008
(2.29 ± 0.21)
0.145 ± 0.010
(3.68 ± 0.25)
0.230 ± 0.015
(5.84 ± 0.38)
D
0.025 ± 0.002
(0.64 ± 0.05)
0.032 ± 0.002
(0.81 ± 0.05)
0.032 ± 0.002
(0.81 ± 0.05)
MARKING
Model: C55-39 = CMF55-39, C60-64 = CMF60-64, C70-5 = CMF70-5
Temperature coefficient: T1 = 100 ppm
CMF55-39, CMF60-64, CMF70-5: (5 lines)
DALE
C55-39
1.47 k
1 % T1
1130
Manufacturer
Model
Value
Tolerance and TC
4-digit date code
FUSIBLE, FLAMEPROOF
(Typical Fusing Times)
FUSING TIME (s)
FUSING TIME (s)
24
22
20
18
16
14
12
10
8
6
4
2
0
CMF55..39
0
0
CMF60..64
20
40
60
CMF70..5
120
100
80
5
10
15
20
25
30
35
10
20
30
40
50
60
70
APPLIED POWER (W)
APPLIED POWER (W)
Note
• Fusing time graphs represent an average for the resistance value range. Low resistance parts require higher power to fuse than high
resistance parts. It is recommended that values less than 200
be evaluated for specific applications.
Revision: 14-May14
Document Number: 31031
2
For technical questions, contact:
ff2aresistors@vishay.com
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT
www.vishay.com/doc?91000
Legal Disclaimer Notice
www.vishay.com
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.
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.
Revision: 13-Jun-16
1
Document Number: 91000
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