CMF Fusible
Vishay Dale
Metal Film Resistors, Special Purpose, Fusible, Flameproof
FEATURES
•
Special filming and coating processes
•
Fusible - circuit protection in case of other
component failure
•
Flameproof - meets EIA RS-325, will not flame
when overloaded
•
Tape and reel packaging is standard
•
Compliant to RoHS directive 2002/95/EC
STANDARD ELECTRICAL SPECIFICATIONS
GLOBAL
MODEL
CMF55..39
CMF60..64
HISTORICAL
MODEL
CMF-55-39
CMF-60-64
POWER RATING
P
70 °C
W
0.25
0.50
RESISTANCE
RANGE
(1)
Ω
4 to 10K
4 to 23K
TOLERANCE
±%
1
1
TEMPERATURE
COEFFICIENT
± ppm/°C
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
Ω
°C
g
CMF55..39
0.25
350
450
≥
10
10
- 65/+ 165
0.20
CMF60..64
0.50
500
750
≥
10
10
- 65/+ 165
0.50
GLOBAL PART NUMBER INFORMATION
New Global Part Numbering: CMF55100R00FKRE39 (preferred part numbering format)
C
GLOBAL MODEL
CMF55
CMF60
M
F
5
5
1
0
0
R
0
0
F
K
R
E
3
9
SPECIAL
39
= Fusible
CMF55
64
= Fusible
CMF60
RESISTANCE
VALUE
R
=
Ω
K
= k
Ω
TOLERANCE
CODE
F
=±1%
TEMPERATURE
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)
BF
= Tin/Lead,
bulk
RE
= Tin/Lead, T/R (full)
R6
= Tin/Lead, T/R (1000 pieces)
4R0000
= 4.0
Ω
680R00
= 680
Ω
23K000
= 23 k
Ω
Historical Part Number example: CMF-55-391000F R36 (will continue to be accepted)
C M F -5 5 -3 9
HISTORICAL MODEL
1000
RESISTANCE
VALUE
F
TOLERANCE CODE
R36
PACKAGING
* Pb containing terminations are not RoHS compliant, exemptions may apply.
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124
For technical questions, contact:
ff2aresistors@vishay.com
Document Number: 31031
Revision: 11-Mar-10
CMF Fusible
Metal Film Resistors, Special Purpose, Fusible, Flameproof
Vishay Dale
DIMENSIONS
in inches (millimeters)
1.500 ± 0.125
(1)
(38.10 ± 3.18)
A
C
(Max.)
D
B
Note
(1)
1.08 ± 0.125 (27.43 ± 3.18) if tape and reel
C
(Max.)
0.278
(7.06)
0.425
(10.80)
GLOBAL MODEL
CMF55..39
A
0.240 ± 0.020
(6.10 ± 0.51)
0.370 ± 0.035
(9.40 ± 0.89)
B
0.090 ± 0.008
(2.29 ± 0.21)
0.145 ± 0.010
(3.68 ± 0.25)
D
0.025 ± 0.002
(0.64 ± 0.05)
0.032 ± 0.002
(0.81 ± 0.05)
CMF60..64
MARKING
- DALE
- Model (C55-39 or C60-64)
- Value
- Tolerance, Temperature coefficient
- Date code
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
Ω
be evaluated for specific applications.
FUSING TIME (s)
24
22
20
18
16
14
12
10
8
6
4
2
0
CMF55..39
CMF60..64
5
10
15
20
25
30
35
APPLIED POWER (W)
FUSIBLE, FLAMEPROOF
(Typical Fusing Times)
Document Number: 31031
Revision: 11-Mar-10
For technical questions, contact:
ff2aresistors@vishay.com
www.vishay.com
125
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.
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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.
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Document Number: 91000
Revision: 11-Mar-11
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