
2002 Dec 19
10
BCcomponents
Product specification
Precision flat chip resistors
MCT 0603; MCU 0805;
MCA 1206
TESTS AND REQUIREMENTS
All tests are carried out in accordance with the following
specifications:
EN 60 115-1, 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 60 068 and
under standard atmospheric conditions in accordance with
IEC 60 068-1, 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 60 115-1, 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
60 115-1
CLAUSE
IEC
60 068-2
TEST
METHOD
TEST
PROCEDURE
REQUIREMENTS
PERMISSIBLE CHANGE (
R
/
R
)
STABILITY
CLASS 0,1
STABILITY
CLASS 0,25
stability for product
types:
MCT 0603
100 to 10 k
47 to < 100
> 10 k to 150 k
47 to < 100
> 47,5 k to 332 k
MCU 0805
100 to 47,5 k
MCA 1206
47 to 332 k
4.5
4.8.4.2
resistance
temperature
coefficient
endurance at
70 C:
precision
operation
mode
0,1%; 0,25%
at 20 / 10 / 20 °C and
20 / 85 / 20 °C
U
=
U
=
U
max
; whichever is
the less severe
1,5 h on; 0,5 h off
25 ppm/K; 15 ppm/K; 10 ppm/K
4.25.1
or
70 C; 1 000 h
70 C; 8 000 h
U
=
U
=
U
max
; whichever is
the less severe;
1,5 h on; 0,5 h off
(0,1%
R
+ 0,02 )
(1)
(0,2%
R
+ 0,05 )
(1)
endurance at
70 C:
standard
operation
mode
or
70 C; 1 000 h
70 C; 8 000 h
(0,2%
R
+ 0,02 )
(1)
(0,4%
R
+ 0,05 )
(1)
P
70
R
P
70
R