B57238S 509M EPCOS Inc, B57238S 509M Datasheet - Page 9

• Manufacturer Part Number: B57238S 509M
• Description: NTC Thermistor
• Manufacturer: EPCOS Inc

Specifications of B57238S 509M

• Thermistor Type: NTC
• Resistance: 5ohm
• Thermistor Tolerance: ± 20%
• Beta Value (k): 2965
• Operating Temperature Range: -55°C To +170°C
• Operating Voltage Range: 265V
• Thermistor Case Style: Radial Lead
• No. Of Pins: 2
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Wave soldering
Temperature characteristic at component terminal with dual wave soldering
2
The leads meet the requirements of IEC 60068-2-21. They may not be bent closer than 4 mm
from the solder joint on the thermistor body or from the point at which they leave the feed-
throughs. During bending, any mechanical stress at the outlet of the leads must be removed. The
bending radius should be at least 0.75 mm.
Tensile strength:
Bending strength: Test Ub:
Torsional strength: Test Uc: severity 2
Please read Cautions and warnings and
Important notes at the end of this document.
Inrush current limiters
ICLs
Robustness of terminations
Two 90 -bends in opposite directions at a weight of 0.25 kg.
The lead is bent by 90 at a distance of 6 to 6.5 mm from the thermistor body.
The bending radius of the leads should be approx. 0.75 mm. Two torsions of
180 each (severity 2).
Test Ua1:
Leads
0.50 <
0.80 <
0.80 mm = 10.0 N
1.25 mm = 20.0 N
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