B57236S250M EPCOS Inc, B57236S250M Datasheet - Page 3
![Thermistors - NTC 25 Ohms 2.5amps 3065k](/photos/16/24/162465/varistor__leaded_sml.jpg)
B57236S250M
Manufacturer Part Number
B57236S250M
Description
Thermistors - NTC 25 Ohms 2.5amps 3065k
Manufacturer
EPCOS Inc
Type
NTCr
Series
B57236r
Datasheet
1.B57236S0500M000.pdf
(15 pages)
Specifications of B57236S250M
Resistance
25 Ohms
Tolerance
20 %
Termination Style
Radial
Operating Temperature Range
- 55 C to + 170 C
Current Rating
2.5 Amps
Dimensions
11.5 mm Dia. x 6 mm W x 16 mm H
Lead Spacing
5 mm
Power Rating
2.1 W
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
R
120
Reliability data
Test
Storage in
dry heat
Storage in damp
heat, steady state
Rapid temperature
cycling
Endurance
Cyclic
endurance
Transient
load
Note
1) For details on the capacitance C
Please read Cautions and warnings and
Important notes at the end of this document.
Inrush current limiters
ICLs
80
25
The self-heating of a thermistor during operation depends on the load applied and the
applicable dissipation factor.
When loaded with maximum allowable current/power and the specified dissipation factor is
taken as a basis, the NTC thermistor may reach a mean temperature of up to 250 C.
The heat developed during operation will also be dissipated through the lead wires. So the
contact areas, too, may become quite hot at maximum load.
When mounting NTC thermistors you have to ensure that there is an adequate distance
between the thermistor and all parts which are sensitive to heat or combustible.
I
(0...65 C)
A
1.6
1.5
max
Standard
IEC
60068-2-2
IEC
60068-2-78
IEC
60068-2-14
B
K
3300
3450
25/100
test
as well as on the parameters k and n refer to "Application notes", chapters 1.6 and 1.7.
C
230 V
400
400
F
test
Test conditions
Storage at upper
category temperature
T: 170 C
t: 1000 h
Temperature of air: 40 C
Relative humidity of air: 93%
Duration: 21 days
Lower test temperature:
Upper test temperature: 170 C
Number of cycles: 10
I = I
t: 1000 h
I = I
On-time = 1 min
Cooling time = 6 min
Capacitance = C
Number of cycles: 1000
1)
max
max
, 1000 cycles
C
110 V
1600
1600
F
test
Page 3 of 15
1)
Param.
for R(I)
k
1.64
1.74
test
1)
55 C
Param.
for R(I)
n
1.37
1.39
1)
(typical)
< 10%
< 5%
< 10%
< 10%
< 10%
< 5%
R
Ordering code
B57236S0800M000
B57236S0121M000
25
/R
25
Remarks
No visible
damage
No visible
damage
No visible
damage
No visible
damage
No visible
damage
No visible
damage
B57236
S236