B57238S220M51 EPCOS Inc, B57238S220M51 Datasheet - Page 2

• Manufacturer Part Number: B57238S220M51
• Description: CURRENT LIMITER INRSH 22 OHM 20%
• Manufacturer: EPCOS Inc
• Type: NTCr

Specifications of B57238S220M51

• R @ 25°c: 22 Ohm
• Current - Steady State Max: 4A
• Tolerance: ±20%
• Diameter: 0.629" (16mm)
• Lead Spacing: 0.295" (7.50mm)
• Resistance: 22 Ohms
• Termination Style: Radial
• Operating Temperature Range: - 55 C to + 170 C
• Current Rating: 4 Amps
• Power Rating: 3.9 W
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• R @ Current: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: B57238S 220M 51; B57238S0220M051

Applications
Features
Options
Alternative lead configurations available on
request
Delivery mode
Bulk (standard),
cardboard tape, reeled or in Ammo pack
General technical data
Climatic category
Max. power
Resistance tolerance
Rated temperature
B value tolerance
Dissipation factor
Thermal cooling time constant
Heat capacity
Test voltage
Electrical specification and ordering codes
R
10
15
1) For details on the capacitance C
Please read Important notes and
Cautions and warnings at the end of this document.
Inrush current limiters
ICLs, insulation voltage 1000 VDC for 1 s
2.5 8.4
3
4.7 6.6
5
7
8
25
Switch-mode power supplies
Soft-start motors, e.g. in vacuum cleaners
Improved insulation voltage
Useable in series connections up to 265 V
Coated thermistor disk
Kinked leads of tinned copper wire
Wide resistance range
UL approval (E69802)
I
(0...65 C)
A
7.4
6.4
6.0
5.5
5.0
4.4
max
No. of
R/T char-
acteristic
1202
1203
1207
1207
1207
1208
1208
1209
test
as well as on the parameters k and n refer to "Application Notes", chapters 2.6 and 2.7.
B
K
2800
2900
2965
2965
2965
3065
3065
3165
25/100
(IEC 60068-1)
(at 25 C)
(in air)
(in air)
(t = 1 s)
C
230 V
700
700
700
700
700
700
700
700
F
test
rms
1)
Page 2 of 6
C
110 V
2800
2800
2800
2800
2800
2800
2800
2800
F
Dimensional drawing
Dimensions in mm
Approx. weight 3 g
test
1)
P
T
C
V
c
Param.
for R(I)
k
0.98
1.04
1.20
1.23
1.34
1.40
1.50
1.67
th
R
R
B/B
max
test
th
R
/R
R
1)
55/170/21
3.9
25
approx. 20
approx. 80
approx. 1600
1000
Param.
for R(I)
n
15
3
1.36
1.36
1.37
1.37
1.38
1.39
1.39
1.40
1)
Ordering code
B57238S0259L002
B57238S0309L002
B57238S0479L002
B57238S0509L002
B57238S0709L002
B57238S0809L002
B57238S0100L002
B57238S0150L002
W
%
%
mW/K
s
mJ/K
VDC
B57238
C
S238