Datasheet

1) Depends on mounting situation
Applications
Temperature measurement and
compensation
Features
SMD NTC with/ without inner electrodes
Nickel barrier termination
Excellent long-term aging stability in
high-temperature environment
Options
Alternative resistance ratings, resistance
tolerances and B value tolerances available
on request.
Delivery mode
Blister tape, 180-mm reel (standard)
Dimensional drawing
Dimensions in mm
Approx. weight 18 mg
General technical data
Climatic category (IEC 60068-1) 55/125/21
Max. power (at 25 °C, on PCB) P
25
1)
300 mW
Resistance tolerance ∆R
R
/R
R
±5%, ±10%, ±20% %
Rated temperature T
R
25 °C
Dissipation factor (on PCB) δ
th
1)
approx. 5 mW/K
Thermal cooling time constant (on PCB) τ
c
1)
approx. 10 s
Heat capacity C
th
1)
approx. 50 mJ/K
Electrical specification and ordering codes
R
25
Ω
No. of R/T
characteristic
B
25/50
K
B
25/85
K
B
25/100
K
Ordering code
+ = Resistance tolerance
J = ±5%
K = ±10%
M = ±20%
1.0 k 3206 3420 3440 3450 ±3% B57621C5102+062
4.7 k 1309 3430 3500 3520 ±3% B57621C5472+062
10 k 1010 3470 3510 3530 ±3% B57621C5103+062
15 k 1008 3480 3550 3560 ±3% B57621C5153+062
Temperature measurement and compensation B57621C5*
SMD NTC thermistors, case size 1206 (3216)
Page 2 of 20Please read Cautions and warnings and
Important notes at the end of this document.