MMU 0102, MMA 0204, MMB 0207 - Precision
Precision MELF Resistors
Vishay Beyschlag
TESTS AND REQUIREMENTS
All tests are carried out in accordance with the following
specifications:
Unless otherwise specified the following values apply:
Temperature: 15 °C to 35 °C
EN 60115-1, generic specification
EN 140400, sectional specification
EN 140401-803, detail specification
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 components are approved in accordance with the
IECQ-CECC-system, where applicable. 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 requirements stated in Test Procedures and
Requirements table are based on the required tests and
permitted limits of EN 140401-803. However, some
additional tests and a number of improvements against those
minimum requirements have been included. The stated
requirements for long-term tests are typically fulfilled with a
statistical safety of at least x + 5 s.
The tests are carried out under standard atmospheric
conditions in accordance with IEC 60068-1, 5.3 (4). Climatic
category LCT/UCT/56 (rated temperature range: Lower
category temperature, upper category temperature; damp
heat, steady state, test duration 56 days) is valid.
TEST PROCEDURES AND REQUIREMENTS
EN
IEC
60115-1 60068-2 (4)
REQUIREMENTS
PERMISSIBLE CHANGE (R)
TEST
PROCEDURE
CLAUSE
TEST
METHOD
STABILITY
CLASS 0.05
OR BETTER
STABILITY
CLASS 0.1
OR BETTER
STABILITY
CLASS 0.25
OR BETTER
Stability for product types:
MMU 0102
MMA 0204
MMB 0207
-
100
100
100
to 100 k
to 100 k
to 270 k
43
43
43
to 147 k
to 221 k
to 510 k
0.25 %
22
10
to 332 k
to 511 k
15
to 1 M
4.5
-
-
Resistance
0.5 %
R
;
R;
0.1 % R
Temperature
coefficient
At (20/- 55/20) C and
(20/125/20) C
4.8.4.2
25 ppm/K, 15 ppm/K
U = P70 x R
Umax.
;
Endurance at
70 C: precision
operation mode
1.5 h on; 0.5 h off;
70 °C; 1000 h
70 °C; 8000 h
U = P70 x R
(0.05 %
(0.1 %
R + 5 m)
R
+ 5 m)
4.25.1
-
Umax.
;
Endurance at
70 C: standard
operation mode
1.5 h on; 0.5 h off;
70 °C; 1000 h
(0.1 %
(0.2 %
R
R
+ 5 m
)
)
70 °C; 8000 h
+ 5 m
Endurance at
upper category
temperature
85 C; 1000 h
125 C; 1000 h
(0.02 %
(0.05 %
R
R
+ 5 m
)
)
(0.05 %
(0.1 %
R
+ 5 m
+ 5 m
(0.1 %
)
(0.1 %
R
+ 5 m
)
4.25.3
4.24
-
+ 5 m
R
)
(0.15 %
R
+ 5 m
)
(40 2) C; 56 days;
Damp heat,
steady state
78 (Cab)
(0.05 %
R
+ 5 m
)
R + 5 m)
(93 3) % RH
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For technical questions, contact: melf@vishay.com
This document is subject to change without notice.
Document Number: 28714
Revision: 05-Mar-12
THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000