ICLB57237S237 Datasheet, PDF (7/14 Pages) EPCOS – NTC thermistors for inrush current limiting

Inrush current limiters
ICLs
B57237S0***M0**
S237
Mounting instructions
1
Soldering
1.1 Leaded NTC thermistors
Leaded thermistors comply with the solderability requirements specified by CECC.
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:
Bath temperature
Soldering time
Dip soldering
max. 260 °C
max. 4 s
Iron soldering
max. 360 °C
max. 2 s
Distance from thermistor
min. 6 mm
min. 6 mm
Under more severe soldering conditions the resistance may change.
Solderability (test to IEC 60068-2-20)
Preconditioning: Immersion into flux F-SW 32.
Evaluation criterion: Wetting of soldering areas ≥95%.
Solder
SnAg (3.0 ... 4.0), Cu (0.5 ... 0.9)
Bath temperature (°C)
245 ±3
Dwell time (s)
3
1.1.1 Resistance to soldering heat (test to IEC 60068-2-20)
Preconditioning: Immersion into flux F-SW 32.
Solder
SnAg (3.0 ... 4.0), Cu (0.5 ... 0.9)
Bath temperature (°C)
260 5
Dwell time (s)
10
Please read Cautions and warnings and
Important notes at the end of this document.
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