
www.vishay.com For technical questions, contact: filmresistors.leaded@vishay.com Document Number: 28727
84 Revision: 10-Mar-08
MPR24
Vishay BCcomponents High Precision Leaded Resistors
TESTS AND REQUIREMENTS
Essentially all tests are carried out in accordance with the
following specifications:
EN 140000/IEC 60115-1, Generic specification (includes
tests)
EN 140100/IEC 60115-2, Sectional specification (includes
schedule for qualification approval)
CECC 40101-806, Detail specification (includes schedule for
conformance inspection)
Most of the components are approved in accordance with the
European CECC-system, where applicable. The following
table 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 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).
For testing the components are mounted on a test board in
accordance with IEC 60115-1, 4.31 unless otherwise
specified.
In the Test Procedures and Requirements table only the
tests and requirements are listed with reference to the
relevant clauses of IEC 60115-1 and IEC 60068-2; a short
description of the test procedure is also given.
TEST PROCEDURES AND REQUIREMENTS
IEC
60115-1
CLAUSE
IEC
60068-2
TEST
METHOD
TEST PROCEDURE REQUIREMENTS
PERMISSIBLE CHANGE (ΔR)
Stability for product
types: 24 Ω to 100 kΩ4.99 Ω to < 24 Ω;
> 100 kΩ to 1 MΩ
4.5
-resistance
(ΔR/R)-± 0.5 %; ± 0.25 %; ± 0.1 %;
± 0.05 %; ± 0.02 %; ± 0.01 % ± 0.5 %; ± 0.25 %; ± 0.1 %
4.8.4.2
-temperature
coefficient
at 20/70/20 °C ± 25 ppm/K; ± 15 ppm/K; ± 10 ppm/K; ± 05 ppm/K
at 20/LCT/20 °C and
20/UCT/20 °C ± 25 ppm/K
4.25.1
-endurance at
70 °C
U= or
U = Umax.;
1.5 h ON;
0.5 h OFF
70 °C; 2000 h ± (0.05 % R + 0.01 Ω)
4.24
78 (Cab) damp heat,
steady state
(40 ± 2) °C; 56 days;
(93 ± 3) % RH ± (0.05 % R + 0.01 Ω)
4.23 climatic
sequence:
4.23.2 2 (Ba) dry heat 125 °C; 16 h
4.23.3
30 (Db) damp heat,
cyclic
55 °C; 24 h;
90 % to 100 % RH;
1 cycle
P70 x R