Overcurrent protection
Leaded disks, uncoated, 380 V to 1000 V
B750 ... B774
Reliability data
Test
Electrical endurance,
cycling
Electrical endurance,
constant
Damp heat
Standard
IEC 60738-1
IEC 60738-1
IEC 60738-1
Test conditions
Room temperature, I
Smax
; V
max
Number of cycles: 100
Storage at V
max
/T
op,max
(V
max
)
Test duration: 1000 h
Temperature of air: 40
°C
Relative humidity of air: 93%
Duration: 56 days
Test according to IEC 60068-2-78
T
1
= T
op,min
(0 V), T
2
= T
op,max
(0 V)
Number of cycles: 5
Test duration: 30 min
Test according to IEC 60068-2-14, Test Na
Frequency range: 10 to 55 Hz
Displacement amplitude: 0.75 mm
Test duration: 3
×
2 h
Test according to IEC 60068-2-6, Test Fc
Acceleration: 390 m/s
2
Pulse duration: 6 ms; 6
×
4000 pulses
Dry heat: T = T
op,max
(0 V)
Test duration: 16 h
Damp heat first cycle
Cold: T = T
op,min
(0 V)
Test duration: 2 h
Damp heat 5 cycles
Tests performed according to
IEC 60068-2-30
∆R
25
/R
25
< 25%
< 25%
< 10%
Rapid change
of temperature
IEC 60738-1
< 10%
Vibration
IEC 60738-1
< 5%
Shock
Climatic sequence
IEC 60738-1
IEC 60738-1
< 5%
< 10%
Please read
Cautions and warnings
and
Important notes
at the end of this document.
Page 4 of 13
EPCOS [ EPCOS ]
