B57964 EPCOS AG, B57964 Datasheet - Page 3

• Manufacturer Part Number: B57964
• Description: Ntc Thermistors For Temperature Sensing And Compensation
• Manufacturer: EPCOS AG

Note
The type series S964 has a specially designed insulation (coating, wire coating) to withstand the
immersion test in water of 1000 h, 25 C. Therefore these sensors must be protected to avoid any
damage of the insulation material during handling and in the application.
Reliability data
Test
Storage in
dry heat
Storage in damp
heat, steady state
Rapid temperature
cycling
Immersion test
Long-term stability
(empirical value)
Please read Cautions and warnings and
Important notes at the end of this document.
Temperature measurement and compensation
Leaded NTC thermistors, lead spacing 2.5 mm
Standard
IEC
60068-2-2
IEC
60068-2-78
IEC
60068-2-14
Test conditions
Storage at upper
category temperature
T: 155 C
t: 1000 h
Temperature of air: 40 C
Relative humidity of air: 93%
Duration: 56 days
Lower test temperature:
Upper test temperature: 155 C
Number of cycles: 100
Test voltage 2.7 V DC on NTC
over protective resistor, sensors
immersed into water, ambient
temperature (25 C), voltage
switched on 5 h switched off 1 h.
t: 1000 h
Temperature: 70 C
t: 10000 h
Page 3 of 17
55 C
(typical)
< 2%
< 1%
< 2%
< 2%
< 3%
R
25
/R
25
Remarks
No visible
damage
No visible
damage
No visible
damage
No visible
damage
No visible
damage
B57964S
S964