CMB 0207
Vishay Beyschlag
High Pulse Load MELF Resistors
FEATURES
Approved to the safety requirements of
IEC 60065, 14.1.a* (= VDE 0860, 14.1.a)
VDE-REG.-Nr. B583
REG.-Nr. B583
AEC-Q200 qualified
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
Compliant to RoHS directive 2002/95/EC
CMB 0207 specialty MELF resistors with advanced pulse
Find out more about Vishays Automotive Grade Product
load capability are the perfect choice for the protection of
requirements at: www.vishay.com/applications
circuitry with signal and mains input lines from surge pulses.
The resistors are also suitable for circuits exposed to high
APPLICATIONS
levels of electromagnetic interference or electro-static
Automotive
discharge. The applications are in all fields of automotive,
Telecommunication
telecommunication, industrial and medical equipment.
Industrial
Medical equipment
METRIC SIZE
DIN 0207
CECC RC 6123M
TECHNICAL SPECIFICATIONS
DESCRIPTION CMB 0207
CECC size RC 6123M
Resistance range 2.2 to 1.5 M
Resistance tolerance 5 %; 2 %; 1 %
Temperature coefficient see TCR graph
Operation mode Standard Power
Climatic category (LCT/UCT/days) 55/125/56 55/155/56
(1) (2)
Rated dissipation, P 0.4 W 1.0 W
70
Operating voltage, U AC/DC 500 V
max.
(3)
Film temperature 125 C 155 C
Max. resistance change at P for resistance range, R/R after: 2.2 to 10 k
70
1000 h 0.5 % 1 %
8000 h 1 % 2 %
225 000 h t.b.f -
Permissible voltage against ambient (insulation):
1 min; U 750 V
ins
Continuous 75 V
-9
Failure rate: FIT 0.1 x 10 /h
observed
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.
** Please see document Vishay Material Category Policy: www.vishay.com/doc?99902
Document Number: 28755 For technical questions, contact: melf@vishay.com www.vishay.com
Revision: 01-Mar-10 67CMB 0207
High Pulse Load MELF Resistors
Vishay Beyschlag
DIMENSIONS
L
K L
1
D
D
1
DIMENSIONS AND MASS
L D L D K MASS
1 min. 1
TYPE
(mm) (mm) (mm) (mm) (mm) (mg)
CMB 0207 5.8 + 0/- 0.15 2.2 + 0/- 0.2 3.2 D + 0/- 0.2 1.15 0.1 79
Note
(3)
Color code marking is applied according to IEC 60062 in four bands. Each color band appears as a single solid line, voids are permissible
2
if at least / of the band is visible from each radial angle of view. The last color band for tolerance is approximately 50 % wider than the other
3
nd rd
bands. An interrupted band between the 2 and 3 full band indicates the special carbon film type.
PATTERN STYLES FOR MELF RESISTORS
X
G
Y
Z
RECOMMENDED SOLDER PAD DIMENSIONS
WAVE SOLDERING REFLOW SOLDERING
TYPE
G Y X Z G Y X Z
(mm) (mm) (mm) (mm) (mm) (mm) (mm) (mm)
CMB 0207 2.8 2.1 2.6 7.0 3.2 1.7 2.4 6.6
Note
The given solder pad dimensions reflect the considerations for board design and assembly as outlined e.g. in standards IEC 61188-5-x, or in
publication IPC-7351. They do not guarantee any supposed thermal properties, however, they will be found adequate for most general
applications.
www.vishay.com For technical questions, contact: melf@vishay.com Document Number: 28755
68 Revision: 01-Mar-10