Reliability data

Test

Standard

Test conditions

∆R

(typical)

Remarks

Storage in

dry heat

IEC

60068-2-2

Storage at max. operating temperature

T: 150

°C

t: 168 h

Medium: air

< 3%

No visible

damage

Storage in

coldness

Storage at lower category temperature

T:

20

°C

t: 1000 h

Medium: air

< 3%

No visible

damage

Storage in damp

heat, steady state

Temperature of air: 60

°C

Relative humidity of air: 93%

Duration: 1000 h

< 3%

No visible

damage

Rapid

temperature

cycling (in water)

Lower test temperature: 15

°C

Upper test temperature: 96

°C

Dwell time: 30 s

Time to change from lower to upper

temperature: <10 s

Number of cycles: 1000

Medium: water

< 3%

No visible

damage

Vibration

resistance

IEC

60068-2-6

Frequency range: 10 to 2000 Hz

Amplitude: 1.5 mm, 10 g

Linear sweep; X, Y and Z direction

Duration: 3

× 2 h

< 3%

No visible

damage

Natural falling

test

Drop sensor 3 times from a height of

75 cm spontaneously onto hard

surface

< 3%

No visible

damage

Boiling test

Storage at 96

°C in water for 6 h, then

natural cooling for 16 h

< 3%

No visible

damage

Note

Contact of NTC thermistors with any liquids and solvents shall be prevented. It must be

ensured that no water enters the NTC thermistors (e.g. through plug terminals).

Avoid dewing and condensation unless thermistor is specified for these conditions.

Temperature measurement

B57504K

Probe assemblies

K504

Page 3 of 9

Please read Cautions and warnings and

Important notes at the end of this document.