Ω

No. of R/T

characteristic

K

Ordering code

+ =

Resistance tolerance

J =

±5%

K =

±10%

33 k

2904

4300

±3%

B57891M0333+000

47 k

4012

4355

±3%

B57891M0473+000

68 k

4012

4355

±3%

B57891M0683+000

100 k

4003

4450

±3%

B57891M0104+000

150 k

2005

4600

±3%

B57891M0154+000

220 k

2005

4600

±3%

B57891M0224+000

330 k

2007

4830

±3%

B57891M0334+000

470 k

2006

5000

±3%

B57891M0474+000

Reliability data

Test

Standard

Test conditions

∆R

(typical)

Remarks

Storage in

dry heat

IEC

60068-2-2

Storage at upper

category temperature

T: 125

°C

t: 1000 h

< 3%

No visible

damage

Storage in damp

heat, steady state

IEC

60068-2-78

Temperature of air: 40

°C

Relative humidity of air: 93%

Duration: 56 days

< 2%

No visible

damage

Rapid temperature

cycling

IEC

60068-2-14

Lower test temperature:

40

°C

Upper test temperature: 125

°C

Number of cycles: 100

< 2%

No visible

damage

Endurance

t: 1000 h

< 3%

No visible

damage

Long-term stability

(empirical value)

Temperature: 70

°C

t: 10000 h

< 5%

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 and compensation

B57891M

Leaded NTC thermistors, lead spacing 2.5 mm

M891

Page 3 of 28

Please read Cautions and warnings and

Important notes at the end of this document.