CMB 0207
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High Pulse Load Carbon Film MELF Resistors
CMB 0207 carbon film MELF resistors with advanced pulse
load capability are the perfect choice for the protection of
circuitry with signal and mains input lines from surge pulses.
The resistors are also suitable for circuits exposed to high
levels of electromagnetic interference or electro-static
discharge. The applications are in all fields of automotive,
telecommunication, industrial and medical equipment.
FEATURES
• Approved to the safety requirements of
IEC 60065, 14.2.a (= VDE 0860, 14.1.a)
VDE-REG.-Nr. B583
• AEC-Q200 qualified
• Special carbon film technology
• Up to 3 kW single pulse capability
• ESD capability: 16 kV, human body model
• Sulfur resistance verified according to
ASTM B 809
• Surge voltage capability up to 10 kV 1.2/50 μs pulse
• Material categorization: for definitions of compliance
please see www.vishay.com/doc?99912
APPLICATIONS
• Automotive
• Telecommunication
• Industrial
• Medical equipment
Note
(1) Please refer to APPLICATION INFORMATION below.
APPLICATION INFORMATION
The power dissipation on the resistor generates a temperature rise against the local ambient, depending on the heat flow
support of the printed-circuit board (thermal resistance). The rated dissipation applies only if the permitted film temperature is
not exceeded. Furthermore, a high level of ambient temperature or of power dissipation may raise the temperature of the solder
joint, hence special solder alloys or board materials may be required to maintain the reliability of the assembly.
These resistors do not feature a limited lifetime when operated within the permissible limits. However, resistance value drift
increasing over operating time may result in exceeding a limit acceptable to the specific application, thereby establishing a
functional lifetime. At the maximum permissible film temperature of 155 °C the useful lifetime is specified for 8000 h. The
designer may estimate the performance of the particular resistor application or set certain load and temperature limits in order
to maintain a desired stability.
REG.-Nr. B583
TECHNICAL SPECIFICATIONS
DESCRIPTION CMB 0207
DIN size 0207
Metric size code RC6123M
Resistance range 2.2 to 1.5 M
Resistance tolerance ± 5 %; ± 2 %; ± 1 %
Temperature coefficient see TCR graph
Rated dissipation, P70 (1) 1.0 W
Operating voltage, Umax. ACRMS/DC 500 V
Permissible film temperature,
F max. (1) 155 °C
Operating temperature range (1) -55 °C to 155 °C
Permissible voltage against ambient (insulation):
1 min; Uins 750 V
Failure rate: FITobserved 0.1 x 10-9/h
CMB 0207
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Note
(1) Specified power rating requires dedicated heat sink pads.
Note
• Products can be ordered using either the PART NUMBER or the PRODUCT DESCRIPTION.
MAXIMUM RESISTANCE CHANGE AT RATED DISSIPATION
OPERATIONE MODE STANDARD POWER
Rated dissipation, P70 CMB 0207 0.4 W 1.0 W (1)
Operating temperature range -55 °C to 125 °C -55 °C to 155 °C
Permissible film temperature,
F max. 125 °C 155 °C
Max. resistance change at P70
for resistance range, |R/R| after:
CMB 0207 2.2 to 10 k2.2 to 10 k
1000 h 0.5 % 1 %
8000 h 1 % 2 %
TEMPERATURE COEFFICIENT AND RESISTANCE RANGE
TYPE / SIZE TCR TOLERANCE RESISTANCE E-SERIES
CMB 0207 see TCR graph
± 5 % 2.2 to 15 E24
± 2 % 16 to 1.5 ME24
± 1 % 16 to 1 ME24; E96
PACKAGING
TYPE / SIZE CODE QUANTITY PACKAGING STYLE WIDTH PITCH PACKAGING
DIMENSIONS
CMB 0207
B2 2000 Antistatic blister tape
acc. IEC 60286-3 Type 2a
on reel
12 mm 4 mm
Ø 180 mm / 7"
B7 7000 Ø 330 mm / 13"
PART NUMBER AND PRODUCT DESCRIPTION
Part Number: CMB02070X4701GB200
TYPE / SIZE VERSION TCR VALUE TOLERANCE PACKAGING
CMB0207 0 = neutral X = no indication 3 digit value
1 digit multiplier
Multiplier
8 = *10-2
9 = *10-1
0 = *100
1 = *101
2 = *102
3 = *103
4 = *104
J = ± 5 %
G = ± 2 %
F = ± 1 %
B2
B7
Product Description: CMB 0207 2 % B2 4K7
CMB 0207 2 % B2 4K7
TYPE SIZE TOLERANCE PACKAGING RESISTANCE VALUE
CMB 0207 ± 5 %
± 2 %
± 1 %
B2
B7
100R = 100
4K7 = 4.7 k
CMB 020 70X4701GB2 0 0
CMB 0207
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DESCRIPTION
Production of the CMB 0207 specialty MELF resistor is
strictly controlled and follows an extensive set of
instructions established for reproducibility. A homogeneous
and dense carbon film is deposited on a high grade ceramic
body (Al2O3). Nickel plated steel termination caps are firmly
pressed on the coated rods. Products with a resistance of
15 or lower are made without trimming, whereas a special
laser is used to achieve a target value of 16 or above
by smoothly cutting a helical groove in the resistive layer
without damaging the ceramics. The resistor elements are
covered by a protective coating designed for electrical,
mechanical and climatic protection. The terminations
receive a final pure matte tin on nickel plating. Four or five
color code rings designate the resistance value and
tolerance in accordance with IEC 60062 (1).
The result of the determined production is verified by an
extensive testing procedure performed on 100 % of the
individual resistors. Only accepted products are laid directly
into the blister tape in accordance with IEC 60286-3,
Type 2a (1).
ASSEMBLY
The resistors are suitable for processing on automatic SMD
assembly systems. They are suitable for automatic
soldering using wave, reflow or vapor phase as shown in
IEC 61760-1 (1). Solderability is specified for 2 years after
production or requalification, however, excellent
solderability is proven after extended storage in excess of
10 years. The permitted storage time is 20 years.
The resistors are completely lead (Pb)-free, the pure matte
tin plating provides compatibility with lead (Pb)-free
soldering processes. The immunity of the plating against tin
whisker growth has been proven under extensive testing.
The encapsulation is resistant to all cleaning solvents
commonly used in the electronics industry, including
alcohols, esters and aqueous solutions. The suitability of
conformal coatings, potting compounds and their
processes, if applied, shall be qualified by appropriate
means to ensure the long-term stability of the whole system.
MATERIALS
Vishay acknowledges the following systems for the
regulation of hazardous substances:
• IEC 62474, Material Declaration for Products of and for the
Electrotechnical Industry, with the list of declarable
substances given therein (2)
• The Global Automotive Declarable Substance List
(GADSL) (3)
• The REACH regulation (1907/2006/EC) and the related list
of substances with very high concern (SVHC) (4) for its
supply chain
The products do not contain any of the banned substances
as per IEC 62474, GADSL, or the SVHC list, see
www.vishay.com/how/leadfree.
Hence the products fully comply with the following
directives:
• 2000/53/EC End-of-Life Vehicle Directive (ELV) and
Annex II (ELV II)
• 2011/65/EU Restriction of the Use of Hazardous
Substances Directive (RoHS) with amendment
2015/863/EU
• 2012/19/EU Waste Electrical and Electronic Equipment
Directive (WEEE)
Vishay pursues the elimination of conflict minerals from its
supply chain, see the Conflict Minerals Policy at
www.vishay.com/doc?49037.
APPROVALS
Where applicable the resistors are tested in accordance with
EN 140 401-803 which refers to EN 60115-1, EN 60115-8
and the variety of environmental test procedures of the
IEC 60068 (1) series.
Vishay Beyschlag has achieved “Approval of
Manufacturer” in accordance with IECQ 03-1. The release
certificate for “Technology Approval Schedule” in
accordance with CECC 240001 based on IECQ 03-3-1 is
granted for the Vishay Beyschlag manufacturing process.
The resistors are qualified according to AEC-Q200.
RELATED PRODUCTS
• “Professional Thin Film MELF Resistors”
(www.vishay.com/doc?28713)
• “Precision Thin Film MELF Resistors”
(www.vishay.com/doc?28714)
• “High Pulse Load Carbon Film MINI-MELF Resistors of
case size 0204” (www.vishay.com/doc?28717)
Notes
(1) The quoted IEC standards are also released as EN standards with the same number and identical contents.
(2) The IEC 62474 list of declarable substances is maintained in a dedicated database, which is available at http://std.iec.ch/iec62474.
(3) The Global Automotive Declarable Substance List (GADSL) is maintained by the American Chemistry Council and available at
www.gadsl.org.
(4) The SVHC list is maintained by the European Chemical Agency (ECHA) and available at http://echa.europa.eu/candidate-list-table.
CMB 0207
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FUNCTIONAL PERFORMANCE
C
100 150
-50 0 50 70
Derating - Standard Operation
Ambient Temperature amb
ϑ
0
0.5
W
Power Dissipation P
C
100 150
-50 0 50 70
Derating - Power Operation
Ambient Temperature amb
ϑ
0
0.5
1
W
Power Dissipation P
Note
(1) Specified power rating requires dedicated heat sink pads
Single Pulse
Pulse Duration ti
1 µs
0.1
<
1K0
Pulse Load Pmax.
10 µs 100 µs 1 ms 10 ms 100 ms 1 s 10 s
1
10
100
10 000
1000
Maximum pulse load, single pulse; applicable if P → 0 and n ≤ 1000 and Û ≤ 4 kV;
for permissible resistance change equivalent to 8000 h operation in power operation mode.
W
≥ 1K0
CMB 0207
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Continuous Pulse
Pulse Duration ti
1 µs
0.1
≥ 1K0
<
1K0
10 µs 100 µs 1 ms 10 ms 100 ms 1 s 10 s
1
10
100
10 000
1000
Maximum pulse load, continuous pulses; applicable if P ≤ P (ϑamb) and Û ≤ 4 kV;
for permissible resistance change equivalent to 8000 h operation in power operation mode.
Continuous Pulse Load Pmax.
W
1.2/50 Pulse
Resistance Value R
1 10 100 1K 10K 100K 1M
Ω
10
100
1K
10K
V
CMB 0207
Pulse Voltage U
Pulse load rating in accordance with IEC 60115-1, 4.27; 1.2 µs/50 µs; 5 pulses
at 12 s intervals; for permissible resistance change ± (0.5 % R + 0.05 Ω)
10/700 Pulse
Resistance Value R
1 10 100 1K 10K 100K 1M
Ω
10
100
1K
10K
V
CMB 0207
Pulse Voltage Û
Pulse load rating in accordance with IEC 60115-1, 4.27; 10 µs/700 µs; 10 pulses
at 1 min intervals; for permissible resistance change 0.5 % ± (0.5 % R + 0.05 Ω)
CMB 0207
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TESTS AND REQUIREMENTS
All tests are carried out in accordance with the following
specifications:
EN 60115-1, generic specification
EN 60115-8 (successor of EN 140400), sectional
specification
EN 140401-803, detail specification
IEC 60068-2-xx, test methods
The parameters stated in the Test Procedures and
Requirements table are based on the required tests and
permitted limits of EN 140401-803. The table presents only
the most important tests, for the full test schedule refer to
the documents listed above. However, some additional
tests and a number of improvements against those
minimum requirements have been included.
The testing also covers most of the requirements specified
by EIA/ECA-703 and JIS-C-5201-1.
The tests are carried out under standard atmospheric
conditions in accordance with IEC 60068-1, 4.3, whereupon
the following values are applied:
Temperature: 15 °C to 35 °C
Relative humidity: 45 % to 75 %
Air pressure: 86 kPa to 106 kPa (860 mbar to 1060 mbar).
A climatic category LCT / UCT / 56 is applied, defined by the
lower category temperature (LCT), the upper category
temperature (UCT), and the duration of exposure in the
damp heat, steady state test (56 days).
The components are mounted for testing on printed circuit
boards in accordance with EN 60115-8, 2.4.2, unless
otherwise specified.
Temperature Coefficent (TCR) (typical curve)
Resistance Value R
1 10 100 1K 10K 100K 1M
-500
-400
-300
-200
-100
0
ppm/K
CMB 0207
Temperature Coefficient
Ω
alue
R
Current Noise Voltage Ratio
0.01
100
0.1
1
µV/V
Resistance V
Current Noise Voltage Ratio
In accordance with IEC 60195
1K 10K 100K 1M
Ω
CMB 0207
CMB 0207
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TEST PROCEDURES AND REQUIREMENTS
EN
60 115-1
CLAUSE
IEC
60 068-2 (1)
TEST
METHOD
TEST PROCEDURE REQUIREMENTS
PERMISSIBLE CHANGE (R)
Stability for product types:
CMB 0207 2.2 to 1.5 M
4.5 -Resistance -± 5 % R; ± 2 % R; ± 1 % R
4.8 -Temperature coefficient At (20 / -55 / 20) °C
and (20 / 125 / 20) °C see Temperature Coefficient graph
4.25.1
-Endurance at 70 °C:
standard operation mode
U = Umax.;
whichever is the less severe;
1.5 h on; 0.5 h off;
70 °C; 1000 h ± (1 % R + 0.05)
70 C; 8000 h ± (2 % R + 0.05)
-Endurance at 70 C:
power operation mode
U = Umax.;
whichever is the less severe;
1.5 h on; 0.5 h off;
70 °C; 1000 h ± (2 % R + 0.05)
70 C; 8000 h ± (4 % R + 0.05)
4.25.3 -Endurance at upper category
temperature
125 °C; 1000 h ± (2 % R + 0.05)
155 °C; 1000 h ± (4 % R + 0.05)
4.24 78 (Cab) Damp heat, steady state (40 ± 2C; 56 days; (93 ± 3) % RH ± (1 % R + 0.1 )
4.37 67 (Cy)
Damp heat,
steady state,
accelerated
(85 ± 2) °C
(85 ± 5) % RH
U = 100 V
and U = 0.3 x Umax.;
(the smaller value is valid)
1000 h
± (2 % R + 0.1 )
4.23 Climatic sequence:
4.23.2 2 (Ba) dry heat UCT; 16 h
4.23.3 30 (Db) damp heat, cyclic 55 C; 24 h; 90 % RH; 1 cycle
4.23.4 1 (Aa) cold LCT; 2 h
4.23.5 13 (M) low air pressure 8.5 kPa; 2 h; (25 ± 10) C
4.23.6 30 (Db) damp heat, cyclic 55 C; 24 h; 90 % RH; 5 cycles
4.23.7 -DC load U = Umax.; 1 min
LCT = -55 C; UCT = 155 °C ± (1 % R + 0.1 )
-1 (Aa) Cold -55 C; 2 h ± (0.5 % R + 0.1)
4.19 14 (Na) Rapid change of temperature
30 min at LCT;
30 min at UCT;
LCT = -55 °C; UCT = 125 °C
5 cycles ± (0.5 % R + 0.1 )
1000 cycles ± (1.5 % R + 0.1 )
4.13 -
Short time overload;
standard operation mode
U = 2.5 x 2 x Umax.;
whichever is the less severe;
5 s
± (0.25 % R + 0.1 )
Short time overload;
power operation mode
U = 2.5 x 2 x Umax.;
whichever is the less severe;
5 s
± (0.5 % R + 0.1 )
4.22 6 (Fc) Vibration
Endurance by sweeping;
10 Hz to 2000 Hz;
no resonance;
amplitude 1.5 mm or
200 m/s2; 7.5 h
± (0.25 % R + 0.1)
P70 x R
P70 x R
0.3 x P70 x R
P70 x R
P70 x R
P70 x R
CMB 0207
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Note
(1) The quoted IEC standards are also released as EN standards with the same number and identical contents.
4.40 -Electrostatic discharge
(human body model)
IEC 61340-3-1 (1);
3 pos. + 3 neg.
(equivalent to MIL-STD-883,
method 3015)
CMB 0207: 16 kV
± (0.5 % R + 0.05 )
4.17 58 (Td) Solderability
Solder bath method;
SnPb40;
non-activated flux;
(215 ±3) °C; (3 ± 0.3) s
Good tinning ( 95 % covered);
no visible damage
Solder bath method;
SnAg3Cu0.5 or
SnAg3.5; non-activated flux;
(235 ± 3) °C; (2 ±0.2) s
Good tinning ( 95 % covered);
no visible damage
4.18 58 (Td) Resistance to soldering heat
Solder bath method;
(260 ± 5) C; (10 ± 1) s ± (0.5 % R + 0.1 )
Reflow method 2
(IR / forced gas convection);
(260 ± 5) °C; (10 ± 1) s
± (0.25 % R + 0.1 )
4.29 45 (XA) Component solvent resistance Isopropyl alcohol; 50 °C; method 2 No visible damage
4.30 45 (XA) Solvent resistance of marking Isopropyl alcohol; 50 C; method 1,
toothbrush
Marking legible;
no visible damage
4.32 21 (Ue3)Shear (adhesion) 45 N No visible damage
4.33 21 (Ue1) Substrate bending Depth 2 mm, 3 times
No visible damage;
no open circuit in bent position
± (0.5 % R + 0.1)
4.7 -Voltage proof URMS = Uins; 60 s No flashover or breakdown
4.35 -Flammability
IEC 60695-11-5 (1),
needle flame test;
10 s
No burning after 30 s
TEST PROCEDURES AND REQUIREMENTS
EN
60 115-1
CLAUSE
IEC
60 068-2 (1)
TEST
METHOD
TEST PROCEDURE REQUIREMENTS
PERMISSIBLE CHANGE (R)
Stability for product types:
CMB 0207 2.2 to 1.5 M
CMB 0207
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DIMENSIONS
Note
• Color code marking is applied according to IEC 60062 (1) in four bands (E24 series) or five bands (E96 series). Each color band appears as
a single solid line, voids are permissible if at least 2/3 of the band is visible from each radial angle of view. The last color band for tolerance
is approximately 50 % wider than the other bands. An interrupted brown band between the 2nd and 3rd full band indicates the special carbon
film type.
PATTERN STYLES FOR MELF RESISTORS
Notes
• The rated dissipation applies only if the permitted film temperature is not exceeded. Furthermore, a high level of ambient temperature or of
power dissipation may raise the temperature of the solder joint, hence special solder alloys or board materials may be required to maintain
the reliability of the assembly. Specified power rating above 125 °C requires dedicated heat-sink pads, which to a great extend depend
onboard materials and design. The given solder pad dimensions reflect the considerations for board design and assembly as outlined e.g.
in standards IEC 61188-5-x (1), or in publication IPC-7351. They do not guarantee any supposed thermal properties, particularly as these are
also strongly influenced by many other parameters.
Still, the given solder pad dimensions will be found adequate for most general applications, e.g. those referring to “standard operation
mode”. Please note however that applications for “power operation mode” require special considerations for the design of solder pads and
adjacent conductor areas.
(1) The quoted IEC standards are also released as EN standards with the same number and identical contents.
DIMENSIONS AND MASS
TYPE / SIZE L
(mm)
D
(mm)
L1 MIN.
(mm)
D1
(mm)
K
(mm)
MASS
(mg)
CMB 0207 5.8 + 0/- 0.15 2.2 + 0/- 0.2 3.2 D + 0/- 0.2 1.1 ± 0.1 79
RECOMMENDED SOLDER PAD DIMENSIONS
TYPE / SIZE
WAVE SOLDERING REFLOW SOLDERING
G
(mm)
Y
(mm)
X
(mm)
Z
(mm)
G
(mm)
Y
(mm)
X
(mm)
Z
(mm)
CMB 0207 2.8 2.1 2.6 7.0 3.2 1.7 2.4 6.6
L
1
K
D
1
D
L
GX
Y
Z
CMB 0207
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HISTORICAL 12NC INFORMATION
• The resistors had a 12-digit numeric code starting with
2312.
• The subsequent 4 digits indicated the resistor type,
specification and packaging; see the 12NC table.
• The remaining 4 digits indicated the resistance value:
-The first 3 digits indicated the resistance value.
- The last digit indicated the resistance decade in
accordance with the 12NC Indicating Resistance
Decade table.
Last Digit of 12NC Indicating Resistance Decade
Historical 12NC Example
The 12NC of a CMB 0207 resistor, value 47 k with ± 2 %
tolerance, supplied in blister tape of 2000 units per reel was:
2312 199 24703.
RESISTANCE DECADE LAST DIGIT
1 to 9.99 8
10 to 99.9 9
100 to 999 1
1 k to 9.99 k2
10 k to 99.9 k3
100 k to 999 k4
1 M to 9.99 M5
HISTORICAL 12NC - Resistor Type and Packaging
DESCRIPTION CODE 2312 ... .....
BLISTER TAPE ON REEL
TYPE TOL. B2 2000 UNITS B7 7000 UNITS
CMB 0207
± 5 % 199 3.... 189 3....
± 2 % 199 2.... 189 2....
± 1 % 199 1.... 189 1....
Legal Disclaimer Notice
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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,
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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
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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
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Please contact authorized Vishay personnel to obtain written terms and conditions regarding products designed for
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