|
EPCOS |
Inrush Current Limiters
Applications
I Switch-mode power supplies
Features
I Useable in series connections up to 265 Vrms
I Coated thermistor disk
I Kinked leads of tinned copper wire
I Wide resistance range
I Small space requirement
I Cost-effective
I UL approval (E69802)
Options
Resistance tolerance < 20 % available on request
Delivery mode
Bulk (standard),
cardboard tape, reeled or in Ammo pack
www.DataSheet4U.com
Climatic category (IEC 60068-1)
Max. power at 25 °C
Resistance tolerance
Rated temperature
B value tolerance
Dissipation factor (in air)
Thermal cooling time constant (in air)
Heat capacity
Pmax
∆RN/RN
TN
∆B/B
δth
τc
Cth
B57235
S 235
ø9,5 max.
6 max.
ø0,6
5
TNT0411-B
Dimensions in mm
Approx. weight 0,8 g
55/170/56
1,8
± 20 %
25
±3%
approx. 9
approx. 60
approx. 540
W
°C
mW/K
s
mJ/K
R25
Ω
5,0
6,0
8,0
10,0
Imax
No. of
B25/100
(0 … 65 °C) R/T char-
A acteristic K
4,2
1202
2800
4,0
1202
2800
3,5
1203
2900
3,0
1203
2900
CT1) CT1) Parameters for
230 V 110 V R(I)1)
µF µF k
n
200 800 0,710 – 1,30
200 800 0,757 – 1,30
200 800 0,814 – 1,32
200 800 0,879 – 1,32
Ordering code
B57235S0509M000
B57235S0609M000
B57235S0809M000
B57235S0100M000
1) For details on the capacitance CT as well as on the parameters k and n refer to “Application Notes”, pages 40 – 42.
130 05/02
Inrush Current Limiters
B57235
S 235
Reliability data
Test
Storage in
dry heat
Storage in damp
heat, steady state
Rapid temperature
cycling
Endurance
Cyclic
endurance
Transient
load
Standard
IEC
60068-2-2
IEC
60068-2-3
IEC
60068-2-14
Test conditions
∆R25/R25
(typical)
Storage at upper
category temperature
T: 170 °C
t: 1000 h
< 10 %
Temperature of air: 40 °C
Relative humidity of air: 93 %
Duration: 21 days
<5%
Lower test temperature: – 55 °C < 10 %
Upper test temperature: 170 °C
Number of cycles: 10
I = Imax
t: 1000 h
< 10 %
I = Imax, 1000 cycles
On-time = 1 min
Cooling time = 6 min
< 10 %
Capacitance = CT
Number of cycles: 1000
<5%
Remarks
No visible
damage
No visible
damage
No visible
damage
No visible
damage
No visible
damage
No visible
damage
131 05/02
|