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B57464S0400M000

P1-P3P4-P6P7-P9P10-P12
NTC thermistors for inrush current limiting B57464S 400M
Inrush Current Limiters (ICLs) S464/40/M
Data sheet
PPD VAR PD 2017-07-31
Please read Cautions and warnings and Page 4 of 12
Important notes at the end of this document.
Maximum continuous current I
max
The I
max
denotes the maximum permissible continuous current (DC or RMS values for sine-shaped AC) in the
temperature range from 0 to 65 °C.
Load derating (I / I
max
)
The power handling capability of an NTC thermistor cannot be fully utilized over the entire temperature range.
For circuit dimensioning the derating curve given below provides information on the extent to which the current
must be reduced at a certain ambient temperature (T
A
).
T
1
a
-25 0 65
170
I / I
max
Fig. 1 Maximum current derating (I
/ I
max
)
Maximum permissible capacitance
The currents during turn-on are much higher than the rated currents during continuous operation. To test the
effects of these current surges EPCOS uses the following standard procedure according to IEC 60539-1:
V
load
Load voltage [V]
C
test
Test capacitance [μF]
R
s
Series resistance [Rs = 1 Ω]
V
NTC
Voltage drop across the NTC under test [V]
`
= 180/375 V
(corresponds (110/230 V + dV) x 1.41)
C
test
V
NTC
S
R
T
V
load
R
Thyristor
switch
TNT0358-L-E
Fig. 2 Maximum switchable capacity measuring circuit
Marking
EPCOS – logo
Resistance value
NTC
Date code with 4 digits (year and week of production): 1536 (example for week 36 in year 2015)
Percent of I
max
=
100 1
65
65


TC
TC
A
max
T
A
= ambient temperature ( T
A
> 65°C )
T
max
= 170°C
NTC thermistors for inrush current limiting B57464S 400M
Inrush Current Limiters (ICLs) S464/40/M
Data sheet
PPD VAR PD 2017-07-31
Please read Cautions and warnings and Page 5 of 12
Important notes at the end of this document.
Reliability data
Test Standard Test conditions
R
25
/ R
25
(typical)
Remarks
Storage in dry
heat
IEC
60068-2-2
Storage at upper category
temperature
T: 170°C
t: 1 000 h
< 20 %
No visible
damage
Storage in damp
heat, steady
state
IEC
60068-2-78
Temperature of air: 40°C
Relative humidity of air: 93 %
Duration: 21 days
< 20 %
No visible
damage
Rapid change of
temperature
IEC
60068-2-14
Lower test temperature: -55 °C
t: 30 min
Upper test temperature: 170 °C
t: 30 min
Time to change from lower to
upper temperature: < 30 s
Number of cycles: 10
< 20 %
No visible
damage
Endurance with
max. current
IEC
60539-1
Ambient temperature: 25 ±5 °C
I = Imax
t: 1000 h
< 20 %
No visible
damage
Cyclic
endurance
IEC
60539-1
Ambient temperature: 25 ±5 °C
I = Imax
On-time = 1 min
Cooling time = 5 min
Number of cycles: 1000
< 20 %
No visible
damage
Maximum
permissible
capacitance test
IEC
60539-1
Ambient temperature: 25 ±5 °C
Capacitance = C
test
Number of cycles: 1000
< 20 %
No visible
damage
Note
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.
NTC thermistors for inrush current limiting B57464S 400M
Inrush Current Limiters (ICLs) S464/40/M
Data sheet
PPD VAR PD 2017-07-31
Please read Cautions and warnings and Page 6 of 12
Important notes at the end of this document.
Solderability
Test to IEC 60068-2-20
Preconditioning: Immersion into flux F-SW 32.
Evaluation criterion: Wetting of soldering areas ≥95%.
Solder
Bath temperature (℃)
Dwell time (s)
SnAg (3.0 … 4.0), Cu (0.5 … 0.9) 245 ±3 3
Resistance to soldering heat
Test to IEC 60068-2-20
Preconditioning: Immersion into flux F-SW 32.
Solder
Bath temperature (℃)
Dwell time (s)
SnAg (3.0 … 4.0), Cu (0.5 … 0.9) 260 -5 10
Soldering instructions
When soldering, care must be taken that the NTC thermistors are not damaged by excessive heat. The
following maximum temperatures, maximum time spans and minimum distances have to be observed:
Dip soldering Iron soldering
Bath temperature . max. 260 ℃ max. 360 ℃
Soldering time max. 4 s max. 2 s
Distance from thermistor min. 6 mm min. 6 mm
Under more severe soldering conditions the resistance may change.
Robustness of terminations
The leads meet the requirements of IEC 60068-2-21.
Test Test conditions Remarks
Tensile strength
Test Ua1: Fasten body with a force applied to each lead
10 N for 10 s
No visible damage
Bending strength
Test Ub: Fasten body with two 90°-bends in opposite
direction at a force of 10 N
No visible damage
Remark: Peel off of coating along the lead is accepted.
P1-P3P4-P6P7-P9P10-P12

B57464S0400M000

Mfr. #:
Buy B57464S0400M000
Manufacturer:
EPCOS / TDK
Description:
Inrush Current Limiters S 464/40 /M NTC Thermisto
Lifecycle:
New from this manufacturer.
Delivery:
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