Datasheet

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30 Revision: 28-Aug-07
MBA/SMA 0204, MBB/SMA 0207, MBE/SMA 0414 - Professional
Vishay Beyschlag
Professional Leaded Resistors
4.25.1
-
endurance at
70 °C: standard
operation mode
U = or
U = U
max
;
1.5 h on; 0.5 h off
70 °C; 1000 h ± (0.5 % R + 0.05 Ω) ± (0.5 % R +0.05 Ω) ± 0.5 % R
70 °C; 8000 h ± (1 % R +0.05 Ω)± (1 %R +0.05 Ω)± 1 %R
-
endurance at
70 °C:
long term
operation mode
U = or
U = U
max
;
1.5 h on; 0.5 h off
70 °C; 1000 h ± (0.25 % R +0.05 Ω) ± (0.25 % R +0.05 Ω) ± 0.25 % R
70 °C; 8000 h ± (0.5 % R +0.05 Ω) ± (0.5 % R +0.05 Ω) ± 0.5 % R
4.25.3 −
endurance at
upper category
temperature
125 °C; 1000 h ± (0.25 % R + 0.05 Ω) ± (0.5 % R + 0.05 Ω)± 1 %R
155 °C; 1000 h ± (0.5 % R + 0.05 Ω)± (1 %R + 0.05 Ω)± 2 %R
4.24 78 (Cab)
damp heat,
steady state
(40 ± 2) °C; 56 days;
(93 ± 3) % RH
± (0.5 % R + 0.05 Ω)± (1 %R + 0.05 Ω)± 2 %R
4.23
climatic
sequence:
4.23.2 2 (Ba) dry heat 155 °C; 16 h
4.23.3 30 (Db)
damp heat,
cyclic
55 °C; 24 h;
90 % to 100 % RH;
1 cycle
4.23.4 1 (Aa) cold - 55 °C; 2 h
4.23.5 13 (M) low air pressure
8.5kPa; 2h;
15 °C to 35 °C
4.23.6 30 (Db)
damp heat,
cyclic
55 °C; 5 days;
95 % to 100 % RH;
5 cycles
± (0.5 % R + 0.05 Ω)
no visible
damage
± (1 % R + 0.05 Ω)
no visible
damage
± 2 % R
no visible
damage
TEST PROCEDURES AND REQUIREMENTS
IEC
60115-1
CLAUSE
IEC
60068-2
TEST
METHOD
TEST PROCEDURE
REQUIREMENTS
PERMISSIBLE CHANGE (ΔR
max
)
stability for product
types:
STABILITY
CLASS 0.5
STABILITY
CLASS 1
STABILITY
CLASS 2
MBA/SMA 0204 1 Ω to 332 kΩ 0.22 Ω to < 1 Ω > 332 kΩ
MBB/SMA 0207 1 Ω to 1 MΩ 0.22 Ω to < 1 Ω > 1 MΩ
MBE/SMA 0414 1 Ω to 2.4 MΩ 0.22 Ω to < 1 Ω > 2.4 MΩ
P
70
x R
P
70
x R