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CMA 0204

www.vishay.com

Vishay Beyschlag

Revision: 27-Mar-17

Document Number: 28717

For technical questions, contact: melf@vishay.com

THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT

ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000

High Pulse Load Carbon Film MINI-MELF Resistors

CMA 0204 carbon film 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.

FEATURES

• Special carbon film technology

• Surge voltage capability up to 4 kV 1.2/50 μs

pulse

• ESD capability: 6 kV, human body model

• AEC-Q200 qualified

• Intrinsic sulfur resistance

• 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.

TECHNICAL SPECIFICATIONS

DESCRIPTION CMA 0204

DIN size 0204

Metric size code RC3715M

Resistance range 10  to 100 k

Resistance tolerance ± 2 %

Temperature coefficient see TCR graph

Rated dissipation, P

(1)

0.4 W

Operating voltage, U

max.

RMS

/DC 200 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; U

ins

300 V

Failure rate: FIT

observed

0.1 x 10

-9

Summary of content (11 pages)

PAGE 1
CMA 0204 www.vishay.com Vishay Beyschlag High Pulse Load Carbon Film MINI-MELF Resistors FEATURES • Special carbon film technology • Surge voltage capability up to 4 kV 1.2/50 μs pulse • ESD capability: 6 kV, human body model • AEC-Q200 qualified • Intrinsic sulfur resistance • Material categorization: for definitions of compliance please see www.vishay.
PAGE 2
CMA 0204 www.vishay.com Vishay Beyschlag MAXIMUM RESISTANCE CHANGE AT RATED DISSIPATION OPERATION MODE Rated dissipation, P70 STANDARD POWER 0.25 W 0.4 W -55 °C to 125 °C -55 °C to 155 °C CMA 0204 Operating temperature range Permissible film temperature, F max. 125 °C 155 °C 10  to 100 k 10  to 100 k 1000 h 1% 2% 8000 h 2% 4% CMA 0204 Max.
PAGE 3
CMA 0204 www.vishay.com Vishay Beyschlag DESCRIPTION MATERIALS Production of the CMA 0204 specialty 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 (85 % Al2O3). Nickel plated steel termination caps are firmly pressed on the coated rods.
PAGE 4
CMA 0204 www.vishay.com Vishay Beyschlag Power Dissipation P FUNCTIONAL PERFORMANCE CMA 0204 0.5 W 0 -50 0 50 70 100 °C 150 Ambient Temperature ϑamb Power Dissipation P Derating - Standard Operation CMA 0204 0.5 W 0 -50 0 50 70 100 °C 150 Ambient Temperature ϑamb Pulse Load Pmax. Derating - Power Operation 1000 CMA 0204 100 W 10 1 0.
PAGE 5
CMA 0204 www.vishay.com Vishay Beyschlag Continuous Pulse Load Pmax. FUNCTIONAL PERFORMANCE 1000 CMA 0204 100 W 10 1 0.1 1 µs 10 µs 100 µs 1 ms 10 ms 100 ms 1s 10 s Pulse Duration ti Maximum pulse load, continuous pulse; applicable if P ≤ P (ϑamb) and U ≤ 2 kV; for permissible resistance change ± (0.5 % R + 0.05 Ω) Pulse Voltage U Continuous Pulse 1 kV 100 V CMA 0204 10 V 10 Ω 100 Ω 1 kΩ 10 kΩ 100 kΩ 1 MΩ Resistance Value R Pulse load rating in accordance with IEC 60115-1, 4.
PAGE 6
CMA 0204 www.vishay.com Vishay Beyschlag Temperature Coefficient FUNCTIONAL PERFORMANCE CMA 0204 - 100 ppm/K - 200 - 300 - 400 - 500 10 Ω 100 Ω 1 kΩ 10 kΩ 100 kΩ 1 MΩ 10 MΩ Resistance Value R Temperature coefficient of resistance Current Noise Voltage Ratio Temperature Coefficient (TCR) (Typical Curve) CMA 0204 1 µV/V 0.1 0.
PAGE 7
CMA 0204 www.vishay.com Vishay Beyschlag TESTS AND REQUIREMENTS The testing also covers most of the requirements specified by EIA/ECA-703 and JIS-C-5201-1. 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 tests are carried out under standard atmospheric conditions in accordance with IEC 60068-1, 4.
PAGE 8
CMA 0204 www.vishay.com Vishay Beyschlag TEST PROCEDURES AND REQUIREMENTS EN 60 115-1 CLAUSE IEC 60 068-2 (1) TEST METHOD TEST REQUIREMENTS PERMISSIBLE CHANGE (R) PROCEDURE Stability for product types: 10  to 100 k CMA 0204 4.19 4.13 4.22 4.38 4.17 4.18 4.29 14 (Na) Rapid change of temperature 5 cycles ± (0.5 % R + 0.1 ) 1000 cycles ± (1.5 % R + 0.1 ) Short time overload; standard operation mode U = 2.5 x P 70 x R  2 x Umax.; whichever is the less severe; 5s ± (0.25 % R + 0.
PAGE 9
CMA 0204 www.vishay.com Vishay Beyschlag DIMENSIONS L K L1 D D1 DIMENSIONS AND MASS TYPE / SIZE CMA 0204 L (mm) D (mm) L1 min. (mm) D1 (mm) K (mm) MASS (mg) 3.6 + 0/- 0.2 1.4 + 0/- 0.1 1.8 D + 0/- 0.15 0.75 ± 0.1 19 Note • Color code marking is applied according to IEC 60062 (1) in four bands (E24 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.
PAGE 10
CMA 0204 www.vishay.com Vishay Beyschlag HISTORICAL 12NC INFORMATION Last Digit of 12NC Indicating Resistance Decade • 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: RESISTANCE DECADE LAST DIGIT 10 to 99.9 9 100 to 999  1 1 k to 9.99 k 2 10 k to 99.
PAGE 11
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