NTC thermistors for
temperature measurement
SMD NTC thermistors,
case size 1206 (3216), standard series
Series/Type: B57621C5
Date: December 2016
EPCOS AG 2016. Reproduction, publication and dissemination of this publication, enclosures hereto and the
information contained therein without EPCOS' prior express consent is prohibited.
EPCOS AG is a TDK Group Company.Temperature measurement and compensation B57621C5
SMD NTC thermistors, case size 1206 (3216) Standard series
Applications Dimensional drawing
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
Dimensions in mm
Blister tape, 180-mm reel (standard)
Approx. weight 18 mg
General technical data
Operating temperature range T 55 ... 125 C
op
1)
Max. power (at 25 C, on PCB) P 300 mW
25
Resistance tolerance R /R 5, 10 %
R R
Rated temperature T 25 C
R
1)
Dissipation factor (on PCB) approx. 5 mW/K
th
1)
Thermal cooling time constant (on PCB) approx. 10 s
c
1)
Heat capacity C approx. 50 mJ/K
th
Electrical specification and ordering codes
R /R
R No. of R/T B B B Ordering code
R R
25 25/50 25/85 25/100
%
characteristic K K K
1.0 k 5, 10 3206 3420 3440 3450 3% B57621C5102+062
4.7 k 5, 10 1309 3430 3500 3520 3% B57621C5472+062
10 k 5, 10 1010 3470 3510 3530 3% B57621C5103+062
15 k 5, 10 1008 3480 3550 3560 3% B57621C5153+062
+ = Resistance tolerance
J = 5%
K = 10%
1) Depends on mounting situation
Please read Cautions and warnings and Page 2 of 19
Important notes at the end of this document.