B57500 EPCOS AG, B57500 Datasheet - Page 4

• Manufacturer Part Number: B57500
• Description: Ntc Thermistors For Temperature Measurement
• Manufacturer: EPCOS AG

Reliability data
Test
Storage in
dry heat
Storage in damp
heat, steady state
Storage in coldness
Rapid temperature
cycling (in fluid)
Vibration
resistance
Long-term stability
(empirical value)
Voltage proof test
Insulation test
Please read Cautions and warnings and
Important notes at the end of this document.
Temperature measurement
Probe assemblies
Standard
IEC
60068-2-2
IEC
60068-2-78
IEC
60068-2-14
IEC
60068-2-6
Test conditions
Storage at upper
category temperature
T: 100 C
t: 1000 h
Temperature of air: 40 C
Relative humidity of air: 93%
Duration: 56 days
Storage at lower
category temperature
T:
t: 1000 h
Lower test temperature: 0 C
Upper test temperature: 100 C
Time to change from lower to
upper temperature: <30 s
Number of cycles: 1000
Medium: oil
Frequency range: 5 to 500 Hz
Amplitude: 7.5 mm, 2 g
Duration: 3 x 8 h
Temperature: 100 C
t: 10000 h
1500 V AC,
1 s
The sensors are placed in a
vessel containing metallic balls of
1 mm diameter (with total
immersed head). The applied
voltage is 100 V DC.
30 C
Page 4 of 10
(typical)
< 2%
< 2%
< 2%
< 2%
< 3%
< 3%
R
25
/R
B57500K, B57501K
25
Remarks
No visible
damage
No visible
damage
No visible
damage
No visible
damage
No visible
damage
No visible
damage
No flashover
Above
100 M
K500/K501