Inrush current limiters
ICLs
B57236
S236
Reliability data
Test
Storage in
dry heat
Standard
IEC
60068-2-2
Test conditions
∆R
25
/R
25
(typical)
< 10%
Remarks
No visible
damage
Storage in damp
heat, steady state
Rapid temperature
cycling
Endurance
Cyclic
endurance
Transient
load
Storage at upper
category temperature
T: 170
°C
t: 1000 h
IEC
Temperature of air: 40
°C
60068-2-78 Relative humidity of air: 93%
Duration: 21 days
IEC
Lower test temperature: 55
°C
60068-2-14 Upper test temperature: 170
°C
Number of cycles: 10
I = I
max
t: 1000 h
I = I
max
, 1000 cycles
On-time = 1 min
Cooling time = 6 min
Capacitance = C
test
Number of cycles: 1000
< 5%
No visible
damage
No visible
damage
No visible
damage
No visible
damage
No visible
damage
< 10%
< 10%
< 10%
< 5%
Cautions and warnings for ICLs
The self-heating of a thermistor during operation depends on the load applied and the applicable
dissipation factor.
When loaded with maximum allowable current/power and the specified dissipation factor is taken
as a basis, the NTC thermistor may reach a mean temperature of up to 250
°C.
The heat developed during operation will also be dissipated through the lead wires. So the
contact areas, too, may become quite hot at maximum load.
When mounting NTC thermistors you have to ensure that there is an adequate distance between
the thermistor and all parts which are sensitive to heat or combustible.
Please read
Important notes
and
Cautions and warnings
at the end of this document.
Page 3 of 6
EPCOS [ EPCOS ]
