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CMA 0204
Vishay Beyschlag
High Pulse Load MELF Resistor
FEATURES
* * * * * * * * Special carbon film technology Up to 4 kV single pulse capability Up to 70 W continuous pulse load Green product, supports lead-free soldering. Automotive Telecommunication Industrial Medical equipment
APPLICATIONS
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.
METRIC SIZES
DIN: CECC: 0204 RC 3715M
TECHNICAL SPECIFICATIONS
DESCRIPTION Metric CECC size Resistance range Resistance tolerance Temperature coefficient Operation mode Climatic category (LCT/UCT/days) Rated dissipation, P70
(1)
CMA 0204 RC 3715M 10 to 100 k 2% see T.C. graph standard 55/125/56 0.25 W 200 V 125 C 10 to 100 k 155 C power 55/155/56 0.4 W
Operating voltage, Umax AC/DC Film temperature Max. resistance change at P70 for resistance range, R/R max., after: 1000 h 8000 h Specified lifetime Permissible voltage against ambient (insulation): 1 minute; Uins continuous Failure rate Note 1% 2%
2% 4% 8 000 h
300 V 75 V 1 x 10-9/h
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. Document Number: 28717 Revision: 27-Feb-04 For technical questions contact: ff3bresistors@vishay.com www.vishay.com 1
CMA 0204
Vishay Beyschlag
High Pulse Load MELF Resistor
ORDERING INFORMATION - type description and ordering code
C FILM TYPE C = Carbon M PRODUCT CODE M = MELF, cylindrical A SIZE CODE A = 0204 0204 2% BL PACKAGING BL = 3000 units B0 = 10000 units 47K RESISTANCE VALUE See temperature Coefficient and Resistance Range Table
METRIC DIN SIZE TOLERANCE 0204 2%
Note 1. For CMA 0204 the temperature coefficient is not identified in the ordering code. 2. We recommend that the clear text ordering code is used to minimize the possibilty of errors in order handling.
DIMENSIONS
L
Color code marking
(1)
D
D1
K L1
DIMENSIONS - MELF resistor types, mass and relevant physical dimensions
TYPE L (mm) 3.6 + 0/-0.2 D (mm) 1.4 + 0/-0.1 L1 min (mm) 1.8 D1 (mm) D + 0/-0.15 K (mm) 0.8 0.1 MASS (mg) 19
CMA 0204 Note
1. 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, 50 % wider than the other bands. An interrupted band between the 2nd and 3rd full band identifies the special carbon film type.
TOLERANCE AND RESISTANCE RANGE
RESISTANCE VALUE(1) TOLERANCE CMA 0204 2% 10 to 100 k
Note 1. Resistance value to be selected from E24 series.
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For technical questions contact: ff3bresistors@vishay.com
Document Number: 28717 Revision: 27-Feb-04
CMA 0204
High Pulse Load MELF Resistor
Vishay Beyschlag
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 (85 % Al2O3). Nickel plated steel termination caps are firmly pressed on the coated rods. A special laser is used to achieve the target value by smoothly cutting a helical groove in the resistive layer without damaging the ceramics. The resistors are covered by protective coating designed for electrical, mechanical and climatic protection.The terminations receive a final pure tin on nickel plating. Four colour 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.
APPROVALS
Where applicable the resistors are tested in accordance with EN 140401-803 (superseding CECC 40401-803) which refers to EN 60115-1, EN 140400 and the variety of enviromental text procedures of the IEC 60068 series. Vishay BEYSCHLAG has achieved "Approval of
Manufacturer" in accordance with EN 100 114-1. The release certificate for "Technology Approval Schedule" in accordance with CECC 240001 based on EN 100114-6 is granted for the Vishay BEYSCHLAG manufacturing process.
ASSEMBLY
The resistors are suitable for processing on automatic SMD assembly systems. They are suitable for automatic soldering using wave, reflow or vapour phase. Excellent solderability is proven, even after 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 CEFIC-EECA-EICTA list of legal restrictions on hazardous substances. This includes full compatibility with European RoHS directive.
Document Number: 28717 Revision: 27-Feb-04
For technical questions contact: ff3bresistors@vishay.com
www.vishay.com 3
CMA 0204
Vishay Beyschlag
FUNCTIONAL PERFORMANCE
Power Dissipation P
High Pulse Load MELF Resistor
1
CMA 0204
W
0.5
0 -50 0 50 70 100 C 150 Ambient Temperature amb
Derating - Standard Operation
Power Dissipation P
1
CMA 0204
W
0.5
0 -50 0 50 70 100 C 150 Ambient Temperature amb
Derating - Power Operation
Pulse Load Pmax
100 W 10
CMA 0204
1
0.1 10 s 100 s 1 ms 10 ms 100 ms 1s 10 s
Pulse Duration ti
Maximum pulse load, single pulse; for permissible resistance change equivalent to 8000 h operation.
Single Pulse
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CMA 0204
High Pulse Load MELF Resistor
Vishay Beyschlag
Continuous Pulse Load Pmax
100 W 10
CMA 0204
1
0.1 10 s 100 s 1 ms 10 ms 100 ms 1s 10 s Pulse Duration ti
Maximum pulse load, continuous pulses; for permissible resistance change equivalent to 8000 h operation.
Continuous Pulses
Pulse Voltage Umax
CMA 0204
1 kV
100 V 10 s 100 s 1 ms 10 ms 100 ms 1s 10 s Pulse Duration ti
Maximum pulse voltage, single and continuous pulses; for permissible resistance change equivalent to 8000 h operation.
Pulse Voltage
Test Voltage
1 kV
100 V
CMA 0204
10 V 10 100 1 k 10 k 100 k 1 M Resistance Value R
Pulse load rating in accordance with IEC 60115-1, 4.27; 1,2 s / 50 s; 5 pulses at 12 s intervals; for permissible resistance change 0.5 %.
1.2/50 Pulse
Document Number: 28717 Revision: 27-Feb-04
For technical questions contact: ff3bresistors@vishay.com
www.vishay.com 5
CMA 0204
Vishay Beyschlag
High Pulse Load MELF Resistor
Test Voltage
CMA 0204
1 kV
100 V
10 V 10 100 1 k 10 k 100 k 1 M
Resistance Value R
Pulse load rating in accordance with IEC 60115-1, 4.27; 10 s / 700 s; 10 pulses at 1minute intervals; for permissible resistance change 0.5 %.
10/700 Pulse
Temperature Coefficient
-100 ppm/K -200 -300 -400 -500 10 100 1 k 10 k 100 k
CMA 0204
1 M
10 M
Resistance Value R
Temperature coefficient of resistance.
Temperature Coefficient (T.C.)
Current Noise A1
1 V/V 0.1
CMA 0204
0.01 1 k 10 k 100 k 1 M 10 M Resistance Value R
In accordance with IEC 60 195
Current Noise - A1
www.vishay.com 6 For technical questions contact: ff3bresistors@vishay.com Document Number: 28717 Revision: 27-Feb-04
CMA 0204
Vishay Beyschlag
High Pulse Load MELF Resistor
TESTS AND REQUIREMENTS
Essentially all tests are carried out in accordance with the following specifications: EN 60115-1, generic specification EN 140400, sectional specification EN 140401-803, detail specification The Test Procedures and Requirements table contains the applicable tests selected from the documents listed above. The tests are carried out in accordance with IEC 60068 and under standard atmospheric conditions in accordance with IEC 60068-1, 5.3. Climatic category LCT/UCT/56 (rated temperature range: Lower Category Temperature, Upper Category Temperature; damp heat, long term, 56 days) is valid. Unless otherwise specified the following values apply: Temperature: 15 C to 35 C Relative humidity: 45 % to 75 % Air pressure: 86 kPa to 106 kPa (860 mbar to 1060 mbar). The components are mounted for testing on printed-circuit boards in accordance with EN 140400, 2.3.3, unless otherwise specified. The requirements stated in the Test Procedures and Requirements table are based on the required tests and permitted limits of EN 140401-803.
TEST PROCEDURES AND REQUIREMENTS
EN 60115-1 CLAUSE IEC 60068-2 TEST METHOD TEST PROCEDURE stability for product types: CMA 0204 4.5 4.8.4.2 - resistance temperature coefficient at 20 / - 55 / 20 C and 20 / 125 / 20 C U = P 70 x R Umax; endurance at 70 C: standard operation mode 1.5 h on; 0.5 h off; 70 C; 1000 h 70 C; 8000 h 4.25.1 endurance at 70 C: power operation mode U = P 70 x R Umax; 1.5 h on; 0.5 h off; 70 C; 1000 h 70 C; 8000 h 4.25.3 4.24 4.23 4.23.2 4.23.3 4.23.4 4.23.5 4.23.6 2 (Ba) 30 (Db) 1 (Aa) 13 (M) 30 (Db) 78 (Cab) endurance at upper category temperature damp heat, steady state climatic sequence: dry heat damp heat, cyclic cold low air pressure damp heat, cyclic UCT; 16 h 55 C; 24 h; 90 % RH; 1 cycle LCT; 2 h 8.5 kPa; 2 h; (25 10) C 55 C; 24 h; 90 % RH; 5 cycles LCT = - 55 C; UCT = 155 C 4.19 1 (Aa) 14 (Na) cold rapid change of temperature - 55 C; 2 h 30 minutes at - 55 C; 30 minutes at + 125 C; 5 cycles (1 % + 0.1 ) no visible damage (0.5 % + 0.1 ) (0.5 % + 0.1 ) 125 C; 1000 h 155 C; 1000 h (40 2) C; 56 days; (93 3) % RH (2 % + 0.05 ) (4 % + 0.05 ) (2 % + 0.05 ) (4 % + 0.05 ) (1 % + 0.1 ) (1 % + 0.05 ) (2 % + 0.05 ) 10 to 100 k 2% see Temperature Coefficient graph REQUIREMENTS PERMISSIBLE CHANGE (R/R)
4.25.1
-
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For technical questions contact: ff3bresistors@vishay.com
Document Number: 28717 Revision: 27-Feb-04
CMA 0204
Vishay Beyschlag
High Pulse Load MELF Resistor
TEST PROCEDURES AND REQUIREMENTS - continued
EN 60115-1 CLAUSE IEC 60068-2 TEST METHOD TEST PROCEDURE stability for product types: CMA 0204 short time overload; standard operation mode short time overload; power operation mode component solvent resistance solvent resistance of marking solderability U = 2.5 x P 70 x R 2 x Umax; 5 s U = 2.5 x P 70 x R 2 x Umax; 5 s 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; (235 3) C; (2 0.2) s 4.18.2 4.32 4.7 4.35 58 (Td) 21 (Ue3) resistance to soldering heat shear (adhesion) voltage proof flammability 10 to 100 k (0.25 % + 0.1 ) (0.25 % + 0.1 ) no visible damage marking legible; no visible damage good tinning ( 95 % covered); no visible damage good tinning ( 95 % covered); no visible damage REQUIREMENTS PERMISSIBLE CHANGE (R/R)
4.13
-
4.29 4.30 4.17.2
45 (XA) 45 (XA) 58 (Td)
solder bath method ; (260 5) C; (10 1) s
45 N Urms = Uins; 60 s IEC 60 695-2-2, needle flame test; 10 s
(0.5 % + 0.1 ) no visible damage no flashover or breakdown no burning after 30 s
ORDERING INFORMATION
Components may be ordered by using either a simple clear text ordering code, see "Type description and ordering code" or Vishay BCcomponents' unique 12NC. Numeric Ordering Code (12NC) * The resistors have a 12-digit ordering code starting with 2312. * The subsequent 4 digits indicate the resistor type, specification and packaging; see the 12NC Ordering Code 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. Last Digit of 12NC Indicating Resistance Decade
RESISTANCE DECADE 10 to 99.9 100 to 999 1 k to 9.99 k 10 k to 99.9 k 100 k to 999 k LAST DIGIT 9 1 2 3 4
Ordering Example The ordering code of a CMA 0204 resistor, value 47 k with 2 % tolerance, supplied in blister tape of 3000 units per reel is: 2312 159 24703.
12NC ORDERING CODE - resistor type and packaging
DESCRIPTION TYPE CMA 0204 TOL. 2% BL 159 2.... ORDERING CODE 2312 ... ..... BLISTER TAPE ON REEL B0 149 2....
Resistance ranges printed in bold are preferred T.C. / tolerance combinations with optimized availability. www.vishay.com 8 For technical questions contact: ff3bresistors@vishay.com Document Number: 28717 Revision: 27-Feb-04

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