Datasheet
www.vishay.com For technical questions, contact: melf@vishay.com Document Number: 28714
46 Revision: 05-Mar-12
MMU 0102, MMA 0204, MMB 0207 - Precision
Vishay Beyschlag
Precision MELF Resistors
This document is subject to change without notice.
THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000
TESTS AND REQUIREMENTS
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 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 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.
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 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 + 5 s.
x
TEST PROCEDURES AND REQUIREMENTS
EN
60115-1
CLAUSE
IEC
60068-2
(4)
TEST
METHOD
TEST PROCEDURE
REQUIREMENTS
PERMISSIBLE CHANGE (R)
Stability for product types:
STABILITY
CLASS 0.05
OR BETTER
STABILITY
CLASS 0.1
OR BETTER
STABILITY
CLASS 0.25
OR BETTER
MMU 0102
100
to 100 k
43
to 147 k
22
to 332 k
MMA 0204
100
to 100 k
43
to 221 k
10
to 511 k
MMB 0207
100
to 270 k
43
to 510 k
15
to 1 M
4.5 - Resistance -
± 0.5 %
R
; ± 0.25 %
R
; ± 0.1 %
R
4.8.4.2 -
Temperature
coefficient
At (20/- 55/20) C and
(20/125/20) C
± 25 ppm/K, ± 15 ppm/K
4.25.1 -
Endurance at
70 C: precision
operation mode
U =
U
max.
;
1.5 h on; 0.5 h off;
70 °C; 1000 h
± (0.05 %
R
+5 m
)
70 °C; 8000 h
± (0.1 %
R
+5 m
)
Endurance at
70 C: standard
operation mode
U =
U
max.
;
1.5 h on; 0.5 h off;
70 °C; 1000 h
± (0.1 %
R
+5 m
)
70 °C; 8000 h
± (0.2 %
R
+5 m
)
4.25.3 -
Endurance at
upper category
temperature
85 C; 1000 h
± (0.02 %
R
+5 m
) ± (0.05 %
R
+5 m
)± (0.1 %
R
+5 m
)
125 C; 1000 h
± (0.05 %
R
+5 m
) ± (0.1 %
R
+5 m
) ± (0.15 %
R
+5 m
)
4.24 78 (Cab)
Damp heat,
steady state
(40 ± 2) C; 56 days;
(93 ± 3) % RH
± (0.05 %
R
+5 m
) ± (0.1 %
R
+5 m
)
P
70
x R
P
70
x R