Datasheet

Applications
Temperature measurement and
compensation
Features
Wide resistance range
Cost-effective
Lacquer-coated thermistor disk
Leads: copper-clad Fe wire, tinned
Marked with resistance and tolerance
Options
Lead spacing 5 mm available on request
Delivery mode
Bulk (standard), cardboard tape, reeled or in
Ammo pack on request
Dimensional drawing
Dimensions in mm
Approx. weight 0.2 g
General technical data
Climatic category (IEC 60068-1) 40/125/56
Max. power (at 25 °C) P
25
200 mW
Resistance tolerance ∆R
R
/R
R
±5, ±10 %
Rated temperature T
R
25 °C
Dissipation factor (in air) δ
th
approx. 3.5 mW/K
Thermal cooling time constant (in air) τ
c
approx. 12 s
Heat capacity C
th
approx. 40 mJ/K
Electrical specification and ordering codes
R
25
Ω
No. of R/T
characteristic
B
25/100
K
Ordering code
+ = Resistance tolerance
J = ±5%
K = ±10%
1 k 1009 3930 ±3% B57891M0102+000
1.5 k 1008 3560 ±3% B57891M0152+000
2.2 k 1013 3900 ±3% B57891M0222+000
3.3 k 2003 3980 ±3% B57891M0332+000
4.7 k 2003 3980 ±3% B57891M0472+000
6.8 k 2003 3980 ±3% B57891M0682+000
10 k 4901 3950 ±3% B57891M0103+000
15 k 2004 4100 ±3% B57891M0153+000
22 k 2904 4300 ±3% B57891M0223+000
Temperature measurement and compensation B57891M
Leaded NTC thermistors, lead spacing 2.5 mm M891
Page 2 of 28Please read Cautions and warnings and
Important notes at the end of this document.