power supplies. B57235 Datasheet

B57235 supplies. Datasheet pdf. Equivalent

Part B57235
Description Switch-mode power supplies
Feature Inrush Current Limiters B57235 S 235 Applications I Switch-mode power supplies ø9,5 max. 6 max. .
Manufacture EPCOS
Datasheet
Download B57235 Datasheet



B57235
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
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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
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.
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B57235
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





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