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EPCOS

B57820 Datasheet Preview

B57820 Datasheet

Leadless Disks

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Temperature Measurement
Leadless Disks
B57820
M 820
Applications
I Automotive electronics, e.g.
measurement of cooling water
and oil temperature
Features
I Thermistor disk with lapped, coplanar
front surfaces
I Front surfaces silver-plated
I For clamp-contacting
I UL approved type (up to 125 °C operating temperature)
Termination
Options
Alternative resistance ratings,
rated temperatures and resistance tolerances
available on request
Delivery mode
Bulk
R100 ()
39,60
77,00
92,00
D (mm)
5,1 1,1
5,3 ±0,3
5,1 1,1
Approx. weight 0,1 g
L (mm)
2,2 1,4
1,3 ±0,2
2,2 1,4
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Climatic category (IEC 60068-1)
Max. power at 25 °C
Resistance tolerance
Rated temperature
B value tolerance
Dissipation factor (in air)
Thermal cooling time constant (in air)
Heat capacity
P25
RN/RN
TN
B/B
δth1)
τc1)
Cth1)
55/155/21
180
±5%
100
± 1,5 %
approx. 3
approx. 30
approx. 90
mW
°C
mW/K
s
mJ/K
R100
39,60
77,00
92,00
R25
560,2
843,2
1014,0
No. of R/T
characteristic
1009
1006
1008
B25/100
K
3930
3550
3560
Ordering code
B57820M0561A005
B57820M0841A004
B57820M0102A003
1) Depends on mounting situation
70 05/02




EPCOS

B57820 Datasheet Preview

B57820 Datasheet

Leadless Disks

No Preview Available !

Temperature Measurement
Leadless Disks
B57820
M 820
Reliability data
Test
Storage in
dry heat
Storage in damp
heat, steady state
Rapid temperature
cycling
Endurance
Long-term stability
(empirical value)
Standard
IEC
60068-2-2
Test conditions
Storage at upper category tem-
perature
T: 155 °C
t: 1000 h
R25/R25 (typ.) Remarks
<3%
No visible
damage
IEC
60068-2-3
Temperature of air: 40 °C
Relative humidity of air: 93 %
Duration: 21 days
<3%
No visible
damage
IEC Lower test temperature: 55 °C < 3 %
60068-2-14 Upper test temperature: 155 °C
Number of cycles: 100
No visible
damage
Pmax: 180 mW
t: 1000 h
<3%
No visible
damage
Temperature: 125 °C
t: 10 000 h
<5%
No visible
damage
71 05/02


Part Number B57820
Description Leadless Disks
Maker EPCOS
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