B57238S0259L002 Datasheet, PDF (1/3 Pages) EPCOS – Insulation Voltage 1000 VDC for 1 s, RN/RN = 15 %

Inrush Current Limiters
Insulation Voltage 1000 VDC for 1 s, ∆R_N/R_N = ± 15 %
Applications
I Switch-mode power supplies
I Soft-start motors, e.g. in vacuum cleaners
Features
I Close resistance tolerance,
improved insulation voltage
I Useable in series connections up to 265 V_rms
I Coated thermistor disk
I Kinked leads of tinned copper wire
I Wide resistance range
I UL approval (E69802)
Delivery mode
Bulk (standard),
cardboard tape, reeled or in Ammo pack
17 max.
B57238
S 238
7 max.
ø1
7,5
TNT0293-3
Dimensions in mm
Approx. weight 3 g
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
Test voltage (t = 1 s)
P_max
∆R_N/R_N
T_N
∆B/B
δ_th
τ_c
C_th
V_T
55/170/56
3,9
± 15 %
25
±3%
approx. 20
approx. 80
approx. 1600
1000
W
°C
mW/K
s
mJ/K
VDC
R₂₅ I_max
No. of
B_25/100 C_T1) C_T1) Parameters for
(0 … 65 °C) R/T char-
230 V 110 V R(I)¹⁾
Ω
A
acteristic K
µF µF _k
n
Ordering code
2,5 8,4
1202
2800 700 2800 0,98 – 1,36 B57238S0259L002
3,0 7,4
1203
2900 700 2800 1,04 – 1,36 B57238S0309L002
5,0 6,4
1207
2965 700 2800 1,23 – 1,37 B57238S0509L002
1) For details on the capacitance C_T as well as on the parameters k and n refer to “Application Notes”, pages 40 – 42.
140 05/02