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Document Number: 28713
Revision: 18-Jul-06
For technical questions contact:
ff3bresistors@vishay.com
www.vishay.com
21
MMU 0102, MMA 0204, MMB 0207 - Professional
Professional MELF Resistors
Vishay Beyschlag
4.39
67 (Cy)
damp heat,
steady state,
accelerated
(85 ± 2) °C;
(85 ± 5) % RH;
U
= 0.1 x
P
70
×
≤
100 V;
1000 h
± (0.25 %
R
+ 10 m
Ω
) ± (0.5 %
R
+ 10 m
Ω
)
± (1 %
R
+ 10 m
Ω
)
± (2 %
R
+ 10 m
Ω
)
4.23
climatic
sequence:
± (0.15 %
R
+ 10 m
Ω
) ± (0.5 %
R
+ 10 m
Ω
)
± (1 %
R
+ 10 m
Ω
)
± (1 %
R
+ 10 m
Ω
)
4.23.2
4.23.3
2 (Ba)
30 (Db)
dry heat
damp heat,
cyclic
UCT; 16 h
55 °C; 24 h;
≥
90 % RH; 1 cycle
4.23.4
4.23.5
1 (Aa)
13 (M)
cold
low air
pressure
damp heat,
cyclic
LCT; 2 h
8.5 kPa; 2 h;
(25 ± 10) °C
55 °C; 24 h;
≥
90 % RH;
5 cycles
U
=
≤
U
max
; 1 min.
LCT = - 55 °C;
UCT = 155 °C
4.23.6
30 (Db)
4.23.7
-
d.c. load
-
1 (Aa)
cold
- 55 °C; 2 h
± (0.05 %
R
+ 5 m
Ω
)
± (0.1 %
R
+ 5 m
Ω
)
4.19
14 (Na)
rapid
change of
temperature
30 minutes at LCT;
30 minutes at UCT;
LCT = - 55 °C;
UCT = 125 °C
5 cycles
1000 cycles
LCT = - 55 °C;
UCT = 155 °C
1000 cycles
U
= 2.5 x
P
70
R
×
± (0.05 %
R
+ 10 m
Ω
)
± (0.15 %
R
+ 10 m
Ω
)
± (0.25 %
R
+ 10 m
Ω
)
± (0.1 %
R
+ 10 m
Ω
)
± (0.25 %
R
+ 10 m
Ω
)
± (0.5 %
R
+ 10 m
Ω
)
4.13
-
short time over-
load: standard
operation mode
≤
2 x
U
max
; 5 s
± (0.03 %
R
+ 5 m
Ω
)
± (0.15 %
R
+ 5 m
Ω
)
short time over-
load: power
operation mode
± (0.05 %
R
+ 5 m
Ω
)
± (0.15 %
R
+ 5 m
Ω
)
4.27
-
single pulse
high voltage
overload;
standard oper-
ation mode
severity no. 4:
U
= 10
×
≤
2
×
U
max
;
10 pulses
10
μ
s/700
μ
s
± (0.25 %
R
+ 5 m
Ω
)
single pulse
high voltage
overload;
power opera-
tion mode
± (0.5 %
R
+ 5 m
Ω
)
TEST PROCEDURES AND REQUIREMENTS
EN
60115-1
CLAUSE
IEC
60068-2*
TEST
METHOD
TEST
PROCEDURE
REQUIREMENTS
PERMISSIBLE CHANGE (
Δ
R
)
STABILITY
CLASS 0.5
OR BETTER
STABILITY CLASS
0.25
OR BETTER
STABILITY CLASS
1
OR BETTER
STABILITY
CLASS 2
OR BETTER
stability for product
types:
MMU 0102
MMA 0204
MMB 0207
10
Ω
to 221k
Ω
10
Ω
to 332 k
Ω
10
Ω
to 1 M
Ω
1
Ω
to < 10
Ω
1
Ω
to < 10
Ω
1
Ω
to < 10
Ω
< 1
Ω
< 1
Ω
< 1
Ω
> 221 k
Ω
> 332 k
Ω
> 1 M
Ω
R
P
R
×
P
70
R
×