High Pulse Load MELF Resistor
REG.-Nr. B583
CMB 0207 speciality 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.
CMB 0207
Vishay Beyschlag
FEATURES
• Approved to the safety requirements of
IEC 60065, 14.1.a* (= VDE 0860, 14.1.a)
VDE-REG.-Nr. B583
• Special carbon film technology
• Up to 10 kV or 17 kW single pulse capability
• Up to tbf. continuous pulse load capability
• ESD capability: 16 kV, Human Body Model
• Compatible with lead (Pb)-free and lead containing
soldering processes
• Lead (Pb)-free and RoHS compliant
APPLICATIONS
• Automotive
• Telecommunication
• Industrial
• Medical equipment
METRIC SIZE
DIN: 0207
CECC: RC 6123M
TECHNICAL SPECIFICATIONS
DESCRIPTION CMB 0207
CECC size RC 6123M
Resistance range 2.2 Ω to 1.5 MΩ
Resistance tolerance ± 5 %; ± 2 %
Temperature coefficient see TCR graph
Operation mode standard power
Climatic category (LCT/UCT/days) 55/125/56 55/155/56
Rated dissipation, P
Operating voltage, U
Film temperature
Max. resistance change at P
|ΔR/R| after: 1000 h
Permissible voltage against ambient (insulation):
Failure rate ≤ 1 × 10
Notes
• 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.
1. The power dissipation on the resistor generates a temperature rise against the local ambient, depending on the heatflow 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.
2. Specified power rating requires dedicated heat-sink pads.
3. Film temperatures above the specified range may be permissible, e.g. 175 °C. Please contact the factory for details.
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Revision: 31-Oct-06 79
1)
70
AC/DC 500 V
max
3)
for resistance range,
70
8000 h ≤ 1 % ≤ 2 %
225 000 h t.b.f -
1 minute; U
continuous 75 V
ins
0.4 W
125 °C 155 °C
2.2 Ω to 10 kΩ
≤ 0.5 % ≤ 1 %
750 V
-9
/h
1.0 W
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CMB 0207
Vishay Beyschlag
High Pulse Load MELF Resistor
12NC INFORMATION
• The resistors have a 12-digit numeric code starting with
2312
• The subsequent 4 digits indicate the resistor type,
specification and packaging; see the 12NC table
• The remaining 4 digits indicate the resistance value:
– The first 3 digits indicate the resistance value
– The last digit indicates the resistance decade in
accordance with the 12NC Indicating Resistance
Decade table
12NC - resistor type and packaging
DESCRIPTION
TYPE TOL. B2 2000 UNITS B7 7000 UNITS
CMB 0207
± 5 % ... 199 3.... ... 189 3....
± 2 % ... 199 2.... ... 189 2....
Last Digit of 12NC Indicating Resistance Decade
RESISTANCE DECADE LAST DIGIT
1 Ω to 9.99 Ω 8
10 Ω to 99.9 Ω 9
100 Ω to 999 Ω 1
1 kΩ to 9.99 kΩ 2
10 kΩ to 99.9 kΩ 3
100 kΩ to 999 kΩ 4
1 MΩ to 9.99 MΩ 5
12NC Example
The 12NC of a CMB 0207 resistor, value 47 kΩ with ± 2 %
tolerance, supplied in blister tape of 2000 units per reel is:
2312 199 24703.
ORDERING CODE 2312 ... .....
BLISTER TAPE ON REEL
PART NUMBER AND PRODUCT DESCRIPTION
PART NUMBER2): CMB02070X4701GB200
1)
CMB02070X 4701GB200
MODEL/SIZE SPECIAL CHARACTER TCR VALUE TOLERANCE
CMB0207 0 = neutral X = no indication 3 digit value
1 digit multiplier
Multiplier
-2
8 = *10
-1
9 = *10
0
0 = *10
1
1 = *10
2
2 = *10
3
3 = *10
4
4 = *10
PRODUCT DESCRIPTION4): CMB 0207 2 % B2 4K7
CMB 0207 2 % B2 4K7
MODEL SIZE TOLERANCE PACKAGING
CMB 0207 ± 2 %
Notes
1. Products can be ordered using either the PRODUCT DESCRIPTION or the 12NC.
2. The PART NUMBER is shown to facilitate the introduction of the unified part numbering system. Currently, this PART NUMBER is applicable
in the Americas and in Asia/Pacific only.
3. Please refer to table PACKAGING, see below.
4. For CMB 0207 the temperature coefficient is not identified in the PRODUCT DESCRIPTION.
± 5 %
G = ± 2 %
J = ± 5 %
B2
B7
PAC K A GI N G3)SPECIAL
B2
B7
3)
RESISTANCE VALUE
100R = 100 Ω
up to 2 digits
00
4K7 = 4.7 kΩ
= standard
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80 Revision: 31-Oct-06
CMB 0207
PACKAGING
MODEL
CMB0207
DIMENSIONS
High Pulse Load MELF Resistor
BLISTER TAPE ON REEL
ACC. IEC 60286-3
DIAMETER PIECES/REEL
180 mm/7" 2000 B2
330 mm/13" 7000 B7
L
Color code marking
D
D
1
1)
Vishay Beyschlag
CODE
K
L
1
DIMENSIONS - MELF resistor types, mass and relevant physical dimensions
TYPE
CMB 0207 5.8 + 0/- 0.15 2.2 + 0/- 0.2 3.2 D + 0/- 0.2 1.15 ± 0.1 79
Note
1. Color code marking is applied according to IEC 60062* in four bands. 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. A brown interrupted band between the 2nd and 3rd full band indicates the special carbon film type.
L
(mm)
D
(mm)
L
1 min
(mm)
D
1
(mm)
K
(mm)
MASS
(mg)
TOLERANCE AND RESISTANCE RANGE
DESCRIPTION RESISTANCE VALUE
TOLERANCE CMB 0207
± 5 % 2.2 Ω to 15 Ω
2)
± 2 % 16 Ω to 1.5 MΩ
Note
2. Please select resistance values for ± 5 % and ± 2 % tolerance from the E24 series.
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Revision: 31-Oct-06 81
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CMB 0207
Vishay Beyschlag
High Pulse Load MELF Resistor
DESCRIPTION
Production of the CMB 0207 speciality 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
(96 % Al
pressed on the coated rods. Products with a resistance of
15 Ω or lower are made without trimming, whereas a special
laser is used to achieve a target value of 16 Ω 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 tin on nickel plating. Four color code rings
designate the resistance value and tolerance in accordance
with IEC 60 062
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 60 286-3
). Nickel plated steel termination caps are firmly
2O3
3)
.
3)
.
APPROVALS
Where applicable the resistors are tested in accordance with
EN 140401-803 which refers to EN 60115-1, EN 140400 and
the variety of environmental test procedures of the
IEC 60068
Vishay BEYSCHLAG has achieved "Approval of
Manufacturer" in accordance with IEC QC 001002-3,
clause 2. The release certificate for “Technology Approval
Schedule” in accordance with CECC 240001 based on
IEC QC 001002-3, clause 6 is granted for the Vishay
BEYSCHLAG manufacturing process.
Note
3. The quoted IEC standards are also released as EN standards with
the same number and identical contents.
3)
series.
ASSEMBLY
The resistors are suitable for processing on automatic
SMD assembly systems. They are suitable for automatic
soldering using wave, reflow or vapour phase as shown in
IEC 61760-1
extended storage in excess of 10 years. The encapsulation
is resistant to all cleaning solvents commonly used in the
electronics industry, including alcohols, esters and aqueous
solutions. The resistors are completely lead (Pb)-free, the
pure 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.
All products comply with the GADSL
EECA-EICTA
substances. This includes full compliance with the following
directives:
• 2000/53/EC End of Vehicle life Directive (ELV) and
Annex II (ELV II)
• 2002/95/EC Restriction of the use of Hazardous
Substances Directive (RoHS)
• 2002/96/EC Waste Electrical and Electronic Equipment
Directive (WEEE)
Notes
1. Global Automotive Declarable Substance List, see www.gadsl.org
2. CEFIC (European Chemical Industry Council), EECA (European
Electronic Component Manufacturers Association), EICTA
(European trade organisation representing the information and
communications technology and consumer electronics), see
www.eicta.org
chemicals for electronics
3)
. Excellent solderability is proven, even after
1)
2)
list of legal restrictions on hazardous
-> issues -> environment policy -> chemicals ->
and the CEFIC-
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82 Revision: 31-Oct-06
CMB 0207
R
U
R
U
FUNCTIONAL PERFORMANCE
1
W
0.5
Power Dissipation P
0
Standard Operation Mode
- 50 0 50 70
1)
Specified power rating requires dedicated heat sink pads
Derating
10K
V
High Pulse Load MELF Resistor
Power Operation Mode
100
Ambient Temperature
Vishay Beyschlag
1)
C
150
ϑ
amb
1K
Pulse Voltage
100
10
1 10 100 1K 10K 100K 1M
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 %
CMB 0207
Ω
Resistance Value
1.2/50 Pulse
10K
V
1K
Pulse Voltage
100
10
1 10 100 1K 10K 100K 1M
Pulse load rating in accordance with IEC 60115-1, 4.27; 10 µs/700 µs;
10 pulses at 1 minute intervals; for permissible resistance change 0.5 %
CMB 0207
Resistance Value
Ω
10/700 Pulse
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Revision: 31-Oct-06 83
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CMB 0207
Vishay Beyschlag
0
- 100
- 200
- 300
Temperature Coefficient
- 400
ppm/K
- 500
1 10 100 1K 10K 100K 1M
Temperature Coefficent (TCR)
High Pulse Load MELF Resistor
Resistance Value R
CMB 0207
Ω
1
1
µ V/ V
Current Noise A
0. 1
0.01
100
Current Noise - A
1K 10K 100K 1M
In accordance with IEC 60195
1
CMB 0207
Ω
Resistance V
REVISION HISTORY
Compared to the prior revision of this datasheet, short rev3, the following changes have been applied:
• Transfer into Vishay format for publication on the internet
• Introduction of a standardized part numbering system
• Additional emphasis on the clean balance of materials and on the compliance with various EU directives
• Revision of the 1.2/50 pulse load diagram
• Introduction of diagrams on 10/700 pulse load and on current noise
• Introduction of information on electrostatic discharge (ESD) capability
• No other change of technical contents
• No product change
alue
R
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84 Revision: 31-Oct-06
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