CMA Vishay, CMA Datasheet

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CMA

Manufacturer Part Number
CMA
Description
High Pulse Load Melf Resistor
Manufacturer
Vishay
Datasheet

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www.vishay.com
58
CMA 0204
Vishay Beyschlag
CMA 0204 speciality MELF resistors with advanced pulse
load capability are the perfect choice for the protection of
circuitry with signal or mains input lines from surge pulses.
The resistors are also suitable for circuits exposed to high
levels of electromagnetic interference or electrostatic
discharge. The applications are in all fields of automotive,
telecommunication, industrial and medical equipment.
Note: These resistors do not feature a limited lifetime when operated within the permissible limits. However, resistance value drift increasing over
1)
2)
TECHNICAL SPECIFICATIONS
DESCRIPTION
Metric CECC size
Resistance range
Resistance tolerance
Temperature coefficient
Operation mode
Climatic category (LCT/UCT/days)
Rated dissipation, P
Operating voltage, U
Film temperature
Max. resistance change at P
|ΔR/R| after:
Permissible voltage against ambient (insulation):
Failure rate
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.
Film temperatures above the specified range may be permissible, e.g. 175 °C. Please contact the factory for details.
operating time may result in exceeding a limit acceptable to the specific application, thereby establishing a functional lifetime.
2)
70
max
1)
AC/DC
1 minute; U
70
continuous
for resistance range,
High Pulse Load MELF Resistor
8000 h
1000 h
ins
For technical questions contact: ff3bresistors@vishay.com
FEATURES
• Up to 4 kV single pulse capability
• Up to 70 W continuous pulse load
• ESD capability: 6 kV, Human Body Model
• Compatible with lead (Pb)-free and lead containing
• Lead (Pb)-free and RoHS compliant
APPLICATIONS
• Automotive
• Telecommunication
• Industrial
• Medical equipment
METRIC SIZES
DIN:
CECC:
Special carbon film technology
soldering processes
55/125/56
standard
0.25 W
125 °C
≤ 1 %
≤ 2 %
10 Ω to 100 kΩ
see TCR graph
10 Ω to 100 kΩ
≤ 1 × 10
RC 3715M
CMA 0204
± 2 %
200 V
300 V
75 V
-9
/h
Document Number: 28717
55/155/56
RC 3715M
155 °C
power
0.4 W
≤ 2 %
≤ 4 %
0204
Revision: 18-Jul-06

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CMA Summary of contents

Page 1

... CMA 0204 Vishay Beyschlag High Pulse Load MELF Resistor CMA 0204 speciality MELF resistors with advanced pulse load capability are the perfect choice for the protection of circuitry with signal or mains input lines from surge pulses. The resistors are also suitable for circuits exposed to high levels of electromagnetic interference or electrostatic discharge ...

Page 2

... Example The 12NC of a CMA 0204 resistor, value 47 kΩ with ± tolerance, supplied in blister tape of 3000 units per reel is: 2312 159 24703. ORDERING CODE 2312 ... ..... ...

Page 3

... L TYPE (mm) CMA 0204 3.6 + 0/- 0.2 Color code marking is applied according to IEC 60062* in four bands (E24 series). Each color band appears as a single solid line, voids are permissible if at least 1/3 of the band is visible from each radial angle of view. The last color band for tolerance is approx wider than the other bands ...

Page 4

... DESCRIPTION Production of the CMA 0204 speciality MELF resistors with advanced pulse load capability 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 ( plated steel termination caps are firmly pressed on the coated rods ...

Page 5

... For technical questions contact: ff3bresistors@vishay.com CMA 0204 70 C 150 100 ϑ Ambient Temperature amb CMA 0204 70 100 C 150 ϑ Ambient Temperature amb CMA 0204 100 Pulse Duration and n ≤ 1000 and U ≤ max Document Number: 28717 Revision: 18-Jul-06 ...

Page 6

... For technical questions contact: ff3bresistors@vishay.com CMA 0204 Vishay Beyschlag CMA 0204 100 Pulse Duration and U ≤ amb max CMA 0204 100 Pulse Duration max CMA 0204 100 kΩ 1 MΩ Resistance Value R www.vishay.com 63 ...

Page 7

... In accordance with IEC 60 195 1 For technical questions contact: ff3bresistors@vishay.com CMA 0204 100 kΩ 1 MΩ Resistance Value R CMA 0204 100 kΩ 1 MΩ 10 MΩ Resistance Value R CMA 0204 100 kΩ 1 MΩ Resistance Value R Document Number: 28717 Revision: 18-Jul-06 ...

Page 8

... For technical questions contact: ff3bresistors@vishay.com CMA 0204 Vishay Beyschlag REQUIREMENTS PERMISSIBLE CHANGE (ΔR) 10 Ω to 100 kΩ CMA 0204 ± see Temperature Coefficient graph ± 0.05 Ω) ± 0.05 Ω) ± 0.05 Ω) ± 0.05 Ω) ± 0.05 Ω) ± ...

Page 9

... 2.5 × × ≤ 2 × IEC 61340-3-1*; 3 pos neg. discharges CMA 0204 isopropyl alcohol; 50 °C; method 2 isopropyl alcohol; 50 °C; method 1, toothbrush solder bath method; SnPb40; non-activated flux; (215 ± 3) °C; (3 ± 0.3) s solder bath method; SnAg3Cu0.5 or SnAg3.5; non-activated flux; ...

Page 10

... Vishay disclaims any and all liability arising out of the use or application of any product described herein or of any information provided herein to the maximum extent permitted by law. The product specifications do not expand or otherwise modify Vishay’ ...

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