B57153 データシートの表示（PDF） - EPCOS AG

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B57153

NTC thermistors for inrush current limiting

EPCOS AG 

Inrush current limiters

ICLs

B57153

S153

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 60068-2-58)

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 60068-2-58)

Preconditioning: Immersion into flux F-SW 32.

Evaluation criterion: Leaching of side edges ≤1/3.

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.

Page 8 of 15

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