B57234S0229M Ver la hoja de datos (PDF) - EPCOS AG

Número de pieza

componentes Descripción

Fabricante

B57234S0229M

Inrush Current Limiter

EPCOS AG 

Product division: NTC

Product name: Inrush Current Limiter

Data sheet

Soldering of Components

Product type:S234/xxx/M

Ordering code:B57234S0xxxM000

Process

Soldering

Conditions

Dip soldering : 260°C max, 4 sec max,

6mm min from thermistor body

Iron soldering : 360°C max, 2 sec max,

6 mm min from thermistor body

Remarks

Low resistance drift

* Electrical cycling Test

Each cycle has to start with parts cooled down to room temperature. It has to cover the portion

of the R/T curve between room temperature and the resistance of the components as

stabilized at the maximum continous current Imax (that is the minimum operating resistance).

One cycle lasts 7 minutes.

** Maximum switchable capacity test

The capacitor (CT) is discharged across a series fixed resistor and the thermistor, shown in

Figure 2. The charge voltage is chosen so that the voltage applied to the thermistor at the

beginning of discharge is 170/345 [V], corresponding to (110/230V+∆V)*1.41.

The capacitor is discharged across a series fixed resistor and the thermistor 1 000 times at

ambient temperature of between 15°C and 35°C. Each cycle has to start with thermistors

cooled down to ambient temperature.

VL

CT

RS = 1 Ohm

RNTC VNTC

VL ... Load voltage

CT ... Test capacitance

RS ... Fixed resistance

VNTC ... Voltage drop across the NTC

VNTC = 170/345 V

(corresponds (110/230 V + dV) x 1.41)

Fig. 2. - Maximum switchable capacity measuring circuit

TAPING AND PACKING :

Packing codes :

The last two digits of the complete ordering code state the packing mode :

Packing

Bulk packing

Reel packing

AMMO packing

Bulk

Tape

Tape

Code

00

51

54

Number of

Pieces

500

1000

750

ISSUE DATE

11.05.05

ISSUE

b

PUBLISHER

KB S PE

PAGE 15/19

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