B57237S479M EPCOS Inc, B57237S479M Datasheet - Page 8
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B57237S479M
Manufacturer Part Number
B57237S479M
Description
Thermistors - NTC 4.7 Ohms 5.1amps 2900k
Manufacturer
EPCOS Inc
Type
NTCr
Series
B57237r
Datasheet
1.B57237S0220M000.pdf
(15 pages)
Specifications of B57237S479M
Resistance
4.7 Ohms
Tolerance
20 %
Termination Style
Radial
Operating Temperature Range
- 55 C to + 170 C
Current Rating
5.1 Amps
Dimensions
15 mm Dia. x 7 mm W x 22 mm H
Lead Spacing
7.5 mm
Power Rating
3.1 W
Thermistor Type
NTC
Thermistor Tolerance
± 20%
Thermistor Case Style
Disc
No. Of Pins
2
B Constant
2900
Operating Current
5.1A
Operating Temperature Max
+170°C
Rohs Compliant
Yes
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Mounting instructions
1
1.1
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
Distance from thermistor
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)
1.1.1
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)
Please read Cautions and warnings and
Important notes at the end of this document.
Inrush current limiters
ICLs
Soldering
Leaded NTC thermistors
Resistance to soldering heat (test to IEC 60068-2-58)
Dip soldering
max. 260 C
max. 4 s
min. 6 mm
Page 8 of 15
Bath temperature ( C)
245 3
Bath temperature ( C)
260
Iron soldering
max. 360 C
max. 2 s
min. 6 mm
5
Dwell time (s)
3
Dwell time (s)
10
B57237
S237