2002 Dec 19
13
BCcomponents
Product specification
Professional flat chip resistors
MCS 0402; MCT 0603;
MCU 0805
TESTS AND REQUIREMENTS
All tests are carried out in accordance with the following
specifications:
EN 60115-1, Generic specification (includes tests)
EN 140 400, Sectional specification (includes schedule
for qualification approval)
EN 140 401-801, Detail specification (includes schedule
for conformance inspection)
The components are approved in accordance with the
European CECC-system, where applicable. Table 5 contains
only the most important tests. For the full test schedule refer
to the documents listed above. The testing also covers most
of the requirements specified by EIA/IS-703 and JIS-C-5202.
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
1 060 mbar).
The components are mounted for testing on boards in
accordance with EN 60115-1, 4.31 unless otherwise
specified.
The requirements stated in Table 5 are based on the required
tests and permitted limits of EN 140 401-801. However,
some additional tests and a number of improvements against
those minimum requirements have been included.
Table 5
Test procedures and requirements
EN
60115-1
CLAUSE
IEC
60068-2
TEST
METHOD
TEST
PROCEDURE
REQUIREMENTS
PERMISSIBLE CHANGE (
DR/R)
STABILITY
CLASS 0,5
STABILITY
CLASS 1
stability for product
types:
MCS 0402
10
W to 33,2 kW
33,2 k
W to 4,99 MW
MCT 0603
10
W to 100 kW
1
W to <10 W;
100 k
W to 10 MW
MCU 0805
10
W to 221 kW
221 k
W to 332 kW
4.5
-
resistance
±1%; ±0,5%
4.8.4.2
-
temperature
coefficient
at 20 /
-55 / 20 °C and
20 / 125 / 20 °C
±50 ppm/K; ±25 ppm/K
4.25.1
-
endurance at
70
°C:
standard
operation
mode
U =
or
U = Umax; whichever is
the less severe;
1,5 h on; 0,5 h off
70
°C; 1000 h
±(0,25%R + 0,05 W)
70
°C; 8000 h
±(0,5%R + 0,05 W)
-
endurance at
70
°C:
power
operation
mode
U =
or
U = Umax; whichever is
the less severe;
1,5 h on; 0,5 h off
70
°C; 1000 h
±(0,5%R + 0,05 W)
70
°C; 8000 h
±(1%R + 0,05 W)
P
70
R
´
P
70
R
´
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